AT&T CORP
8-K, EX-10.1, 2000-12-22
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                                                                    Exhibit 10.1
                                                                    ------------


                         SECURITIES PURCHASE AGREEMENT,


                          dated as of December 20, 2000

                                  by and among

                                   AT&T CORP.,

                          AT&T WIRELESS SERVICES, INC.

                                       and

                                NTT DOCOMO, INC.


<PAGE>


                                TABLE OF CONTENTS


                  ARTICLE I   ISSUANCE AND SALE OF SECURITIES
       Section 1.1  Issuance and Sale of Shares                                2
       Section 1.2  Closing; Closing Deliveries                                2


                  ARTICLE II   REPRESENTATIONS AND WARRANTIES
       Section 2.1  Representations and Warranties of AT&T and
                    AT&T Wireless                                              4
       Section 2.2  Representations and Warranties of DoCoMo                  14
       Section 2.3  Additional Representations and Warranties of
                    DoCoMo and/or Designees                                   17
       Section 2.4  Representations and Warranties of the Designees           17


                            ARTICLE III   COVENANTS
       Section 3.1  Cooperation and Access                                    17
       Section 3.2  Conduct of Business                                       17
       Section 3.3  Certificate of Amendment                                  19
       Section 3.4  Proceeds                                                  19
       Section 3.5  Listing of Shares                                         19
       Section 3.6  Commercially Reasonable Efforts;
                    Government Approvals                                      19
       Section 3.7  Adjustment of the Allocation Fraction                     20
       Section 3.8  Further Assurances; Spin-off                              21


                            ARTICLE IV   CONDITIONS

       Section 4.1  Conditions to Obligations of the Parties                  22
       Section 4.2  Conditions to the Obligations of DoCoMo                   22
       Section 4.3  Conditions to the Obligations of AT&T
                    and AT&T Wireless                                         23


                            ARTICLE V   TERMINATION
       Section 5.1  Grounds for Termination                                   24
       Section 5.2  Effect of Termination                                     25


                       ARTICLE VI   INDEMNIFICATION
       Section 6.1  Indemnification Obligations of AT&T and
                    AT&T Wireless                                             25
       Section 6.2  DoCoMo's Indemnification Obligations                      26
       Section 6.3  Limitations on Indemnity                                  26
       Section 6.4  Method of Asserting Claims, etc.                          27
       Section 6.5  Exclusive Remedy; Survival                                28


                       ARTICLE VII   CERTAIN DEFINITIONS
       Section 7.1  Certain Definitions                                       29




                                      -i-


<PAGE>


       Section 7.2  Interpretation                                            35


                         ARTICLE VIII   MISCELLANEOUS
       Section 8.1  Amendments                                                36
       Section 8.2  Assignment                                                36
       Section 8.3  Notices                                                   36
       Section 8.4  Severability                                              38
       Section 8.5  Counterparts                                              38
       Section 8.6  Governing Law                                             38
       Section 8.7  Entire Agreement                                          39
       Section 8.8  Publicity                                                 39
       Section 8.9  Expenses                                                  39
       Section 8.10 No Third Party Beneficiaries                              39
       Section 8.11 Arbitration                                               39
       Section 8.12 Submission to Jurisdiction; Waivers                       41
       Section 8.13 Waiver of Immunity                                        42
       Section 8.14 Waiver of Jury Trial                                      42
       Section 8.15 Termination of Certain Obligations                        42









                                      -ii-


<PAGE>


EXHIBITS
--------

EXHIBIT A       Form of Certificate of Amendment
EXHIBIT B       Form of Warrant Agreement
EXHIBIT C       AT&T Certificate of Incorporation
EXHIBIT D       AT&T By-laws
EXHIBIT E       AT&T Wireless Certificate of Incorporation
EXHIBIT F       AT&T Wireless By-laws
SCHEDULE 1.2(c) Bank Account
SCHEDULE 2.1 - AT&T and AT&T Wireless Disclosure Schedules
SCHEDULE 2.2 - DoCoMo Disclosure Schedules










                                     -iii-


<PAGE>


                          SECURITIES PURCHASE AGREEMENT


          THIS SECURITIES PURCHASE AGREEMENT (this "Agreement"), dated as of
December 20, 2000, is made by and among NTT DoCoMo, Inc., a corporation
organized under the laws of Japan ("DoCoMo"), AT&T Corp., a New York corporation
("AT&T"), and AT&T Wireless Services, Inc., a Delaware corporation and a
wholly-owned subsidiary of AT&T ("AT&T Wireless").

                              W I T N E S S E T H:

          WHEREAS, AT&T, AT&T Wireless and DoCoMo have entered into a Letter
Agreement, dated November 30, 2000 (including the Term Sheet and other schedules
and attachments thereto, the "Letter Agreement"), that sets forth the agreements
among the parties for an investment by DoCoMo in the Wireless Group and, after
the Spin-off, in AT&T Wireless, and a related mobile multimedia alliance;

          WHEREAS, the Investment consists of the purchase by DoCoMo or one or
more Designees as provided herein of (i) shares of Wireless Group Preferred
Tracking Stock, par value $1.00 per share (the "New Tracking Stock"), of AT&T
having the terms set forth in the form of Certificate of Amendment with respect
thereto attached as Exhibit A hereto (the "Certificate of Amendment") and which
are convertible into shares of Wireless Group Common Stock, par value $1.00 per
share (the "Current Wireless Tracking Stock"), of AT&T and which, in connection
with the Spin-off, to the extent not previously converted will be converted into
shares of Current Wireless Tracking Stock which shares of Current Wireless
Tracking Stock will then immediately be converted into or redeemed and exchanged
for shares of Common Stock, par value $0.01 per share (the "AT&T Wireless Common
Stock"), of AT&T Wireless and (ii) warrants of AT&T Wireless to acquire shares
of New Tracking Stock or shares of Current Wireless Tracking Stock, as the case
may be, which, if not exercised prior to the Spin-off, will automatically be
exchanged for warrants to acquire shares of AT&T Wireless Common Stock upon
consummation of the Spin-off, in each case to be issued pursuant to the Warrant
Agreement (the "Warrants," and together with the New Tracking Stock, the
"Securities"); and

          WHEREAS, the Letter Agreement contemplates that the agreements
contained therein would be superseded by definitive agreements, including (1)
this Agreement, (2) the Warrant Agreement and (3) the Investor Agreement.

<PAGE>


          NOW THEREFORE, in consideration of the premises and of the respective
representations, warranties, covenants and conditions contained herein, the
parties hereto agree as follows:

                                    ARTICLE I

                         ISSUANCE AND SALE OF SECURITIES

          Section 1.1 ISSUANCE AND SALE OF SHARES. Upon the terms and subject to
the conditions of this Agreement, in reliance upon the representations and
warranties hereinafter set forth, and except as provided in Section 1.2 with
respect to a possible earlier required funding with respect to a portion of the
Investment, on the Closing Date AT&T shall issue, sell and deliver to DoCoMo or
one or more Designees, and DoCoMo or one or more Designees shall purchase from
AT&T, 812,511.778 shares of New Tracking Stock and AT&T Wireless shall issue,
sell and deliver to DoCoMo or one or more Designees, and DoCoMo and one or more
Designees shall purchase from AT&T Wireless, Warrants representing the right to
purchase an aggregate of 83,496.546 shares of New Tracking Stock, in each case
free and clear of all Liens for an aggregate purchase price of $9,811,079,720 in
cash to be paid in full to AT&T (the "Purchase Price") of which $264,066,328
will be attributable to the Warrants.

          Section 1.2 CLOSING; CLOSING DELIVERIES.

          (a) The consummation of the transactions contemplated hereby (the
"Closing") shall take place, subject to the satisfaction or waiver of all
conditions to the Closing set forth in Article IV hereof, at the offices of
Wachtell, Lipton, Rosen & Katz, 51 West 52nd Street, New York City, at 8:00 a.m.
New York City time, on the later to occur of (i) January 22, 2001 and (ii) as
promptly as practicable (but no more than four (4) Business Days) following the
first date on which all conditions set forth in Article IV have been satisfied
or waived (other than those conditions that by their nature are to be satisfied
by actions taken at the Closing, which must be satisfied or waived at the
Closing); provided that, in the event that AT&T Wireless provides the
certificate contemplated by Section 1.2(b) hereof, the Closing shall take place
on the day prior to the date the relevant spectrum acquisition funding is
required as specified in such certificate and subject to the satisfaction or
waiver of all conditions to the Closing set forth in Article IV hereof; PROVIDED
FURTHER that in no circumstances shall the Closing take place prior to January
15, 2001. The date on which the Closing occurs is the "Closing Date".

          (b) In the event that AT&T or one of its wholly-owned subsidiaries is
required to fund, directly or indirectly (and in each case for the account of
AT&T Wireless or the Wireless Group), earlier than January 22, 2001, in whole or
in part, the

                                       2

<PAGE>

acquisition of spectrum in the Auction of Licenses for C and F Block Broadband
PCS Spectrum (Auction No. 35), which commenced December 12, 2000, then AT&T
shall provide DoCoMo with an officer's certificate at least five (5) Business
Days prior to the day such funding is required, which certificate shall describe
the specific Spectrum Authorizations to be acquired and the amount of funding
required for the acquisition of each such Authorization and the date that the
relevant payments with respect to the acquisition of such Authorizations are
due. In the event DoCoMo receives such timely notice, only such number of shares
of the New Tracking Stock as is required to equate to the dollar amount
requested in such certificate from AT&T (and in no event greater than $1 billion
worth of such securities) shall be purchased and sold no later than the day
prior to the date that such payments with respect to the acquisition of such
Authorizations are due (but in no event earlier than January 15, 2000), and all
of such shares shall be deemed issued for the account of AT&T Wireless. In such
event, the payment of the balance of the Purchase Price and the delivery of the
balance of the shares of New Tracking Stock to be sold pursuant to Section 1.1
hereof shall take place on January 22, 2001 as previously scheduled (which
payment and delivery shall be considered part of the Closing).

          (c) At the Closing, (i) AT&T shall deliver to DoCoMo or one or more
Designees (w) certificates representing the shares of New Tracking Stock to be
sold on such date pursuant to Section 1.1 and 1.2(b) hereof against payment of
all or the applicable portion of the Purchase Price, under Section 1.1 or
1.2(b), respectively, registered in the name of DoCoMo or one or more Designees,
(x) all other documents and certificates to be delivered to DoCoMo or one or
more Designees by AT&T pursuant to Section 4.2 hereof, (y) a secretary's
certificate of AT&T with respect to the resolutions of the board of directors of
AT&T and/or authorized committees thereof concerning this Agreement, the
Investor Agreement and the Warrant Agreement and the appointment of DoCoMo's
designee to such board of directors and AT&T's Capital Stock Committee and such
other matters as are customary for transactions of this sort and (z) a good
standing certificate with respect to AT&T from the state of New York; (ii) AT&T
Wireless shall deliver to DoCoMo or one or more Designees (w) the warrant
certificate in the form provided in the Warrant Agreement representing the
Warrants to be issued pursuant to Section 1.1 hereof, (x) all other documents
and certificates to be delivered to DoCoMo or one or more Designees by AT&T
pursuant to Section 4.2 hereof, (y) a secretary's certificate with respect to
the resolutions of the board of directors of AT&T Wireless and/or authorized
committees thereof concerning this Agreement, the Investor Agreement and the
Warrant Agreement and such other matters as are customary for transactions of
this sort and (z) a good standing certificate with respect to AT&T Wireless from
the state of Delaware; (iii) DoCoMo or one or more Designees, in full payment
for the Securities to be sold on such date pursuant to Section 1.1 and 1.2(b),
shall deliver to AT&T an amount equal to all or the applicable portion of the
Purchase Price under Section 1.1 or 1.2(b), respectively, in immediately
available funds by wire transfer to the account set

                                       3
<PAGE>

forth in Schedule 1.2(c) hereto (or such other account as is designated in
writing to DoCoMo and any Designees not less than two Business Days prior to the
Closing), together with all other documents and certificates to be delivered to
AT&T and AT&T Wireless pursuant to Section 4.3 hereof; provided that in the
event that the Closing Date should occur prior to January 22, 2001, as a result
of a required early funding in accordance with Section 1.2(b), then on January
22, 2001 AT&T shall deliver to DoCoMo or one or more Designees certificates
representing the balance of the shares of New Tracking Stock to be sold pursuant
to Section 1.1 hereof not previously delivered at the Closing against payment of
the balance of the Purchase Price not previously paid, registered in the name of
DoCoMo or one or more Designees and DoCoMo or one or more Designees, in full
payment of such balance of the Purchase Price, shall deliver to AT&T an amount
equal to such balance in immediately available funds by wire transfer to the
account previously specified by AT&T.

                                   ARTICLE II

                         REPRESENTATIONS AND WARRANTIES

          Section 2.1 REPRESENTATIONS AND WARRANTIES OF AT&T AND AT&T WIRELESS.
AT&T and AT&T Wireless hereby represent and warrant to DoCoMo as of November 30,
2000 that, except (i) as set forth in the Disclosure Schedule delivered by AT&T
and AT&T Wireless to DoCoMo and attached hereto as Schedule 2.1 (which includes
each of the individual schedules referred to in the following paragraphs of this
Section 2.1) or (ii) as disclosed in AT&T Reports filed prior to November 30,
2000, in each case such that it would reasonably be concluded that such
disclosure would constitute an exception to the relevant section of the
following representations and warranties:

          (a) ORGANIZATION OF AT&T AND WIRELESS GROUP SUBSIDIARIES

          (i) AT&T has been duly incorporated and is validly existing and in
     good standing under the laws of the state of New York, and has all
     requisite power and authority to own, lease and operate its properties and
     to carry out its business as it is now being conducted. AT&T is qualified
     to do business and is in good standing in all jurisdictions where the
     conduct of its business or the ownership of its properties makes such
     qualification necessary, except where failure to so qualify or to be in
     good standing would not reasonably be expected to have, individually or in
     the aggregate, a Wireless Material Adverse Effect;

                                       4
<PAGE>

          (ii) Each material Wireless Group Subsidiary is listed on Schedule
     2.1(a) annexed hereto and is a corporation or other legal entity duly
     organized, validly existing and in good standing under the laws of the
     jurisdiction of its organization and has power and authority to own, lease
     and operate its properties and to carry out its business as such business
     is now being conducted. Each such Wireless Group Subsidiary is qualified to
     do business and is in good standing in all jurisdictions where the conduct
     of its business or the ownership of its properties makes such qualification
     necessary, except where failure to so qualify or to be in good standing
     would not reasonably be expected to have, individually or in the aggregate,
     a Wireless Material Adverse Effect;

          (iii) AT&T Wireless has been duly incorporated and is validly existing
     in good standing under the laws of the state of Delaware, and has all
     requisite power and authority to own, lease and operate its properties and
     to carry out its business as it is now being conducted. AT&T Wireless is
     qualified to do business and is in good standing in all jurisdictions where
     the conduct of its business or the ownership of its properties makes such
     qualification necessary, except where failure to so qualify or be in good
     standing would not reasonably be expected to have, individually or in the
     aggregate, a Wireless Material Adverse Effect.

          (b) CERTIFICATE OF INCORPORATION AND BY-LAWS. True and complete copies
of the Certificate of Incorporation and by-laws of AT&T and the certificate of
incorporation and by-laws of AT&T Wireless, in each case as in effect on
November 30, 2000, are attached hereto as Exhibits C, D, E and F respectively.

          (c) POWER AND AUTHORITY; NO VIOLATION. Each of AT&T and AT&T Wireless
has all requisite power and authority to execute, deliver and perform its
obligations under this Agreement, the Investor Agreement and the Warrant
Agreement and to consummate the transactions contemplated hereby and thereby. As
of the date hereof, this Agreement, the Investor Agreement and the Warrant
Agreement and all transactions contemplated hereby and thereby will have been
duly and validly authorized by all necessary action on the part of AT&T and AT&T
Wireless, and upon execution by the parties hereto and thereto of this
Agreement, the Investor Agreement and the Warrant Agreement such agreements
shall constitute, legally binding obligations of AT&T or AT&T Wireless, as the
case may be, enforceable in accordance with their terms, subject to bankruptcy,
insolvency, fraudulent transfer, reorganization, moratorium and similar laws of
general applicability relating to or affecting creditors' rights. Except as
described on Schedule 2.1(c) annexed hereto, neither the execution, delivery or
performance of this Agreement, the Investor Agreement or the Warrant Agreement,
nor the consummation of the transactions contemplated by this Agreement, the
Investor Agreement or the Warrant Agreement by AT&T or AT&T Wireless, as the
case may be, will, with or without the

                                       5
<PAGE>

giving of notice or the passage of time, or both, (i) conflict with, result in a
default or loss of rights (or give rise to any right of termination,
cancellation or acceleration) under, or result in the creation of any Lien,
pursuant to (A) any provision of the certificates of incorporation, by-laws,
stockholders agreements or other constituent documents of AT&T or AT&T Wireless;
(B) any contract, note, bond, indenture, mortgage, deed of trust contract,
agreement, lease or other instrument or obligation to which AT&T, AT&T Wireless
or any of their respective Subsidiaries is or is to be a party or by which AT&T,
AT&T Wireless or any of their respective Subsidiaries may be bound or affected;
or (C) any law, order, judgment, ordinance, rule, regulation or decree to which
AT&T, AT&T Wireless or any of their respective Subsidiaries is or is to be a
party or by which their respective property is bound or affected; or (ii) give
rise to any right of first refusal or similar right with respect to any interest
or any properties or assets of AT&T, AT&T Wireless or any Wireless Group
Subsidiary; except in the case of subclauses (B) and (C) of clause (i) for
conflicts, defaults, Losses or Liens and except in the case of clause (ii) for
rights of first refusal or similar rights, that would not reasonably be expected
to have, individually or in the aggregate, a Wireless Material Adverse Effect.
Except as described on Schedule 2.1(c) annexed hereto, no permit, consent,
approval, Authorization, qualification or registration of, or declaration to or
filing with any Governmental Entity or third party is required to be obtained or
made by AT&T, AT&T Wireless or any of their respective Subsidiaries in
connection with the execution and delivery of this Agreement, the Investor
Agreement or the Warrant Agreement or the consummation of the transactions
contemplated hereby or thereby.

          (d) CAPITALIZATION. As of the Closing Date, the authorized capital of
AT&T shall consist of 100,000,000 shares of Preferred Stock, 6,000,000,000
shares of Common Stock, 4,000,000,000 shares of Class A Liberty Media Group
Common Stock, 400,000,000 shares of Class B Liberty Media Group Common Stock,
and 6,000,000,000 shares of Current Wireless Tracking Stock. As of October 31,
2000, 360,971,000 shares of Current Wireless Tracking Stock and as of the date
hereof no shares of Preferred Stock were issued and outstanding. Since October
31, 2000, AT&T has not issued additional shares of Current Wireless Tracking
Stock other than pursuant to exercise of options granted under AT&T Stock Option
Plan. As of the Closing Date, all of the issued and outstanding shares of the
Current Wireless Tracking Stock will be duly and validly authorized and issued,
fully paid and nonassessable. As of November 30, 2000, 73,875,551 shares of
Current Wireless Tracking Stock (and up to an additional 350,000 shares with
respect to options granted to new hires during November 2000) are subject to
issuance upon exercise of outstanding options granted under AT&T Stock Option
Plans. Other than as set forth in the immediately preceding sentence, and other
than as contemplated by this Agreement or the Warrant Agreement, as of November
30, 2000 there were no options or other securities exercisable, convertible or
exchangeable for any shares of Current Wireless Tracking Stock, there were no
shares of Current Wireless

                                       6
<PAGE>

Tracking  Stock  authorized  and reserved for  issuance,  AT&T does not have any
Rights issued or outstanding  with respect to Current  Wireless  Tracking Stock,
and AT&T does not have any  commitment to  authorize,  issue or sell any Current
Wireless  Tracking Stock or Rights.  As of the Closing Date,  none of the issued
and outstanding  Current  Wireless  Tracking Stock will be subject to preemptive
rights, except as contemplated by this Agreement and the Investor Agreement. All
of the issued and outstanding shares of the Wireless Group Subsidiaries' capital
stock will have been duly and  validly  authorized  and  issued,  fully paid and
nonassessable  except as would not reasonably be expected to have,  individually
or in the aggregate,  a Wireless  Material Adverse Effect.  There are no Rights,
options or other  securities  exercisable,  convertible or exchangeable  for any
Wireless Group Subsidiary  capital stock,  there are no shares of Wireless Group
Subsidiary capital stock authorized and reserved for issuance, no Wireless Group
Subsidiary  has any Rights  issued or  outstanding  with respect to any Wireless
Group  Subsidiary's  capital  stock and no  Wireless  Group  Subsidiary  has any
commitment to authorize,  issue or sell any Wireless  Group  Subsidiary  capital
stock or Rights,  in each case  except as would not  reasonably  be  expected to
have,  individually  or in the aggregate,  a Wireless  Material  Adverse Effect.
Immediately  following the Spin-off all of the issued and outstanding  shares of
AT&T  Wireless'  capital  stock will have been duly and validly  authorized  and
issued,  fully paid and  nonassessable.  There are no  Rights,  options or other
securities  exercisable,  convertible  or  exchangeable  for any  AT&T  Wireless
capital stock, there are no shares of AT&T Wireless capital stock authorized and
reserved  for  issuance,  AT&T  Wireless  does  not have any  Rights  issued  or
outstanding  with respect to any of its capital stock and AT&T Wireless does not
have any  commitment  to  authorize,  issue or sell any of its capital  stock or
Rights,  in each case except as  contemplated  by this  Agreement,  the Investor
Agreement,  the Warrant Agreement,  the New Tracking Stock, the Current Wireless
Tracking Stock, AT&T Stock Options Plans or the Separation Agreements. Except as
described  in  Schedule  2.1(d)  annexed  hereto,   and  except  for  directors'
qualifying shares or similar shares, AT&T owns, directly or indirectly,  100% of
the outstanding shares of capital stock of all Wireless Group Subsidiaries,  and
except as described in Schedule 2.1(d) annexed hereto,  upon the Spin-off,  AT&T
Wireless shall own, directly or indirectly,  100% of all the outstanding  shares
of capital stock of all Wireless Group Subsidiaries.

          (e) SPIN-OFF AND SEPARATION AGREEMENTS. AT&T has provided DoCoMo with
drafts of all agreements or term sheets relating to the Spin-off and the
separation of the Wireless Group from AT&T and the schedules related thereto
other than those that collectively are not material to AT&T Wireless or the
Wireless Group, and such agreements in the forms annexed to the Letter Agreement
and listed on Schedule 2.1(e) hereto, in all cases as amended or revised to the
extent not prohibited by the Investor Agreement, are referred to herein as the
"Separation Agreements."

                                       7
<PAGE>

          (f) NEW SECURITIES. The (i) shares of New Tracking Stock to be issued
under this Agreement or upon exercise of the Warrants, (ii) shares of Current
Wireless Tracking Stock into which such shares of New Tracking Stock are
converted or to be issued upon exercise of the Warrants, (iii) AT&T Wireless
Common Stock into which the Current Wireless Tracking Stock (received as a
result of the conversion of the New Tracking Stock) shall be exchanged in the
Spin-off, (iv) Warrants and (v) shares of AT&T Wireless Common Stock issuable
upon exercise of the Warrants following the Spin-off have been duly authorized
by all requisite corporate action on the part of AT&T (with respect to
securities of AT&T), other than the filing of the Certificate of Amendment to
the Certificate of Incorporation setting forth the terms of the New Tracking
Stock, and prior to the Closing (in the case of the Warrants) or prior to the
Spin-off (in the case of AT&T Wireless Common Stock), shall have been duly
authorized by all requisite corporate action on the part of AT&T Wireless (with
respect to securities of AT&T Wireless), and all such securities shall be, when
issued, validly issued and outstanding, fully paid and nonassessable, and shall
not be subject to any preemptive rights of the holders of any other class or
series of the capital stock of AT&T or of AT&T Wireless, as the case may be,
except as provided in this Agreement or the Investor Agreement. Upon the
issuance of any such Securities, such Securities shall be free and clear of all
Liens of any nature whatsoever, with the exception of any restrictions on
transferability set forth in the Investor Agreement or under the Securities Act
or any securities laws of any jurisdiction. As of November 30, 2000, and based
on the number of shares of outstanding Current Wireless Tracking Stock and
options as of October 31, 2000 (using the treasury method), the shares of New
Tracking Stock to be issued to DoCoMo (not including those shares issuable upon
exercise of the Warrants) would, upon issuance, constitute 16.000% of the voting
and economic interest in the Wireless Group. Based upon the number of shares of
outstanding Current Wireless Tracking Stock and options as of October 31, 2000
(using the treasury method), upon conversion of the New Tracking Stock in the
Spin-off, the AT&T Wireless Common Stock issued in respect thereof would, upon
issuance constitute 16.000% of the voting and economic interest in AT&T Wireless
(without giving effect to the Warrants, the issuance of any shares of Current
Wireless Tracking Stock upon exercise thereof or the issuance of any other new
economic interests with respect to the Wireless Group or AT&T Wireless after
November 30, 2000).

          (g) REPORTS. Since December 31, 1999, AT&T has filed all reports,
registration statements, definitive proxy statements or information statements
under the Securities Act, or under Section 13(a), 13(c), 14 or 15(d) of the
Exchange Act or under the securities regulations of the SEC, in the form filed
with the SEC as of the date filed, together with any required amendments
thereto, that it was required to file with the SEC. All such reports and
statements filed with the SEC are collectively referred to herein as the "AT&T
Reports." As of their respective dates, the AT&T Reports, insofar as they

                                       8
<PAGE>

relate to the Wireless Group, (A) complied in all material respects as to form
with the applicable requirements under the Securities Act or the Exchange Act,
as the case may be, and (B) did not contain any untrue statement of a material
fact or omit to state a material fact required to be stated therein or necessary
to make the statements therein, in the light of the circumstances under which
they were made, not misleading; and each of the balance sheets of the Wireless
Group contained in or incorporated by reference into any such AT&T Report
(including the related notes and schedules thereto) fairly presented in all
material respects, the financial position of the Wireless Group as of its date,
and each of the statements of income and changes in shareholders' equity and
cash flows or equivalent statements of the Wireless Group in such AT&T Reports
(including any related notes and schedules thereto) fairly presented in all
material respects, the results of operations, changes in shareholders' equity
and changes in cash flows, as the case may be, for the periods to which they
relate, in each case in accordance with GAAP consistently applied during the
periods involved, except in each case as may be noted therein, subject to normal
year-end audit adjustments in the case of unaudited statements.

          (h) NO MATERIAL ADVERSE CHANGE. Since December 31, 1999, there has not
been any event or condition which has caused or resulted in, or could be
reasonably expected to cause or to result in, individually or in the aggregate,
a Wireless Material Adverse Effect.

          (i) COMPLIANCE WITH LAWS. AT&T, AT&T Wireless and each Wireless Group
Subsidiary are in compliance with all applicable laws, regulations,
administrative orders and Authorizations (including all applicable rules,
regulations and Authorizations of the FCC, any state public utilities or public
service commission, or any other Federal or state governmental agency or
instrumentality exercising jurisdiction over AT&T, AT&T Wireless or such
Wireless Group Subsidiary), and of each municipality, county or subdivision of
any thereof, to which any of its businesses or any of its properties may be
subject, other than any non-compliance that would not reasonably be expected to
have, individually or in the aggregate, a Wireless Material Adverse Effect.

          (j) LITIGATION AND OTHER PROCEEDINGS. There is no pending or, to the
knowledge of AT&T or AT&T Wireless, threatened, claim, action, suit,
investigation or proceeding, against AT&T, AT&T Wireless or any of their
respective Subsidiaries, nor is AT&T, AT&T Wireless or any of their respective
Subsidiaries subject to any order, judgment or decree, except for matters that
have not had a Wireless Material Adverse Effect or would not reasonably be
expected to have, individually or in the aggregate, a Wireless Material Adverse
Effect.

          (k) INTELLECTUAL PROPERTY. AT&T, AT&T Wireless and the Wireless Group
Subsidiaries have all right, title and interest in, or a valid and binding
license to use, all

                                       9
<PAGE>

Intellectual Property that is used in the operation of the business of the
Wireless Group as it is currently conducted (the "Wireless Intellectual
Property"), except where the failure to have such right, title and interest or
have the right to use such Wireless Intellectual Property would not reasonably
be expected to have, individually or in the aggregate, a Wireless Material
Adverse Effect. AT&T, AT&T Wireless and the Wireless Group Subsidiaries (i) have
not defaulted under any license to use Wireless Intellectual Property, and (ii)
are not, as of November 30, 2000, the subject of any proceeding or litigation
for infringement of any third party Intellectual Property other than a default
proceeding or litigation, that is not having or would not be reasonably expected
to have, individually or in the aggregate, a Wireless Material Adverse Effect.
For the purposes of this Agreement, "Intellectual Property" means patents and
patent rights, trademarks and trademark rights, trade names and trade name
rights, service marks and service mark rights, copyrights and copyright rights,
trade secret and trade secret rights, know-how and other intellectual property
rights, and all pending applications for and registrations for any of the
foregoing.

          (l) CONTRACTS; INTERCOMPANY AGREEMENTS; NO DEFAULTS. All contracts
relating to the Wireless Group required to be filed with the SEC by AT&T
pursuant to Item 601 of Regulation S-K have been filed in the AT&T Reports and
the AT&T Reports accurately describe in all material respects the relationship
between the Common Stock Group on the one hand, and the Wireless Group, on the
other hand. Neither AT&T nor any of its Subsidiaries, nor, to the knowledge of
AT&T or AT&T Wireless, any other party, is in default, nor has any event
occurred that, with the passage of time or the giving of notice, or both, would
constitute a default, under any agreement, indenture, loan agreement or other
instrument to which AT&T, AT&T Wireless or any such Subsidiary is a party, or by
which AT&T, AT&T Wireless or any such Subsidiary is bound or to which any of the
assets of AT&T, AT&T Wireless or any of such Subsidiaries are subject, the
result of which would be reasonably expected to have, individually or in the
aggregate, a Wireless Material Adverse Effect.

          (m) AUTHORIZATIONS.

          (i) AT&T, AT&T Wireless, and the Wireless Group Subsidiaries have (A)
     all requisite Authorizations of the FCC (including all PCS Authorizations)
     and of all state public utility or public service commissions and (B) all
     other Authorizations of Governmental Entities exercising jurisdiction over
     AT&T, AT&T Wireless and the Wireless Group Subsidiaries required to carry
     on the business of the Wireless Group as now conducted, except in each case
     where the failure to have such Authorizations would not reasonably be
     expected to have, individually or in the aggregate, a Wireless Material
     Adverse Effect.

                                       10
<PAGE>

          (ii) Such Authorizations are in full force and effect and have not
     been suspended, modified in any material adverse respect, canceled or
     revoked, and AT&T, AT&T Wireless and the Wireless Group Subsidiaries have
     operated in compliance with all terms thereof or any renewals thereof
     applicable to it except where failure to be in full force and effect or to
     so comply would not reasonably be expected to have, individually or in the
     aggregate, a Wireless Material Adverse Effect. No event has occurred with
     respect to any of the Authorizations which permits, or after notice or
     lapse of time or both would permit, revocation or termination thereof or
     would result in any other material impairment of the rights of the holder
     of any such Authorizations, except to the extent such revocation,
     termination or impairment would not reasonably be expected to have,
     individually or in the aggregate, a Wireless Material Adverse Effect.
     Except as set forth in Schedule 2.1(m) annexed hereto, there is not pending
     as of November 30, 2000 any application, petition, objection or other
     pleading with the FCC or any public service commission or similar body
     having jurisdiction or authority over the communications operations of
     AT&T, AT&T Wireless or the Wireless Group Subsidiaries which would
     reasonably be expected to result in the revocation, cancellation,
     suspension or any materially adverse modification of, any such
     Authorizations, except to the extent such invalidity, revocation,
     cancellation, suspension or modification would not reasonably be expected
     to have, individually or in the aggregate, a Wireless Material Adverse
     Effect.

          (n) TAXES.

          (i) Except as would not, individually or in the aggregate, reasonably
     be expected to have a Wireless Material Adverse Effect, each of AT&T and
     its Subsidiaries has timely filed (or there has been timely filed on their
     behalf) all income Tax Returns and all material other United States
     federal, state, county, local and foreign Tax Returns required to be filed
     by them, taking into account any extension of time to file granted to or
     obtained on behalf of the affiliated group of which AT&T is the common
     parent and AT&T and its Subsidiaries have paid all material Taxes due,
     other than Taxes appropriate reserves for which have been made in AT&T's
     financial statements.

          (ii) Except as would not, individually or in the aggregate, reasonably
     be expected to have a Wireless Material Adverse Effect, there are no claims
     or assessments pending against AT&T or any of its Subsidiaries for any
     alleged deficiency in any Tax, and AT&T has not been notified in writing of
     any proposed material Tax claims or assessments against AT&T or any of its
     Subsidiaries (other than, in each case, claims or assessments for which
     adequate

                                       11
<PAGE>

     reserves in the AT&T financial statements have been established or which
     are being contested in good faith or are immaterial in amount).

          (iii) There are no Liens for Taxes on the assets of the Wireless
     Group, except for statutory liens for current Taxes not yet due and payable
     (and except for Liens which do not and would not reasonably be expected to
     have, individually or in the aggregate, a Wireless Material Adverse
     Effect).

          (iv) For purposes of this Agreement, the term "Tax" means any United
     States federal, state, county or local, or foreign or provincial income,
     gross receipts, property, sales, use, license, excise, franchise,
     employment, payroll, value added, alternative or added minimum, ad valorem
     or transfer tax, or any other tax, custom, duty or governmental fee or
     other like assessment or charge of any kind whatsoever, together with any
     interest or penalty imposed by any Governmental Entity. The term "Tax
     Return" means a report, return or other information (including any attached
     schedules or any amendments to such report, return or other information)
     required to be supplied to or filed with a Governmental Entity with respect
     to any Tax, including an information return, claim for refund, amended
     return or declaration or estimated Tax.

          (o) BENEFIT PLANS. Except as would not reasonably be expected to have,
individually or in the aggregate, a Wireless Material Adverse Effect:

          (i) Each "employee benefit plan," within the meaning of Section 3(3)
     of the Employee Retirement Income Security Act of 1974, as amended
     ("ERISA"), other than a "multiemployer plan" within the meaning of Section
     3(37) of ERISA, which is maintained by AT&T Wireless or any Wireless Group
     Subsidiary or to which AT&T Wireless or any Wireless Group Subsidiary
     contributes (a "Plan") is in compliance with the applicable requirements of
     ERISA and the Internal Revenue Code of 1986, as amended (the "Code"). There
     is no pending or, to the knowledge of AT&T or AT&T Wireless threatened,
     litigation relating to any Plan. Neither AT&T, AT&T Wireless nor any
     Wireless Group Subsidiary has engaged in a transaction with respect to any
     Plan that, assuming the taxable period of such transaction expired as of
     the date hereof, could subject AT&T Wireless or any Wireless Group
     Subsidiary to a tax or penalty imposed by either Section 4975 of the Code
     or Section 502(i) of ERISA.

          (ii) No liability under Subtitle C or D of Title IV of ERISA has been
     or is expected to be incurred by AT&T Wireless or any Wireless Group
     Subsidiary with respect to any ongoing, frozen or terminated
     "single-employer plan", within the meaning of Section 4001(a)(15) of ERISA,
     currently or formerly maintained

                                       12
<PAGE>

     by any of them, or the single-employer plan of any entity which is
     considered one employer with AT&T Wireless under Section 4001 of ERISA or
     Section 414 of the Code (an "ERISA Affiliate"). AT&T Wireless and the
     Wireless Group Subsidiaries have not incurred and do not expect to incur
     withdrawal liability with respect to a multiemployer plan under Subtitle E
     of Title IV of ERISA. No notice of a "reportable event", within the meaning
     of Section 4043 of ERISA for which the 30-day reporting requirement has not
     been waived, has been required to be filed for any Plan which is an
     "employee pension benefit plan" within the meaning of Section 3(2) of ERISA
     ("Pension Plan") or by any ERISA Affiliate within the 12-month period
     ending on the date hereof, or will be required to be filed in connection
     with the transactions contemplated by this Agreement.

          (iii) Neither any Pension Plan nor any single-employer plan of an
     ERISA Affiliate has an "accumulated funding deficiency" (whether or not
     waived) within the meaning of Section 412 of the Code or Section 302 of
     ERISA and no ERISA Affiliate has an outstanding funding waiver. Neither
     AT&T Wireless nor any Wireless Group Subsidiary has provided, or is
     required to provide, security to any Pension Plan or to any single-employer
     plan of an ERISA Affiliate pursuant to Section 401(a)(29) of the Code.

          (iv) Neither AT&T Wireless nor any Wireless Group Subsidiary maintains
     or contributes to a Plan subject to Title IV of ERISA.

          (p) INVESTMENT COMPANY ACT. AT&T is not, and will not become after
giving effect to the Closing, and AT&T Wireless will not, upon consummation of
the Spin-off be, an "investment company" within the meaning of the Investment
Company Act of 1940, as amended.

          (q) ASSETS; TITLE TO PROPERTIES.

          (i) Each of AT&T, AT&T Wireless and the Wireless Group Subsidiaries
     has good and valid title to, or, in the case of leased properties and
     assets, valid leasehold interests in, all of its material tangible
     properties and assets, real, personal and mixed, used or held for use in
     the business of the Wireless Group, free and clear of any Liens except (i)
     as reflected in the financial statements contained in the AT&T Reports and
     (ii) for such Liens, title defects or leasehold interest defects, if any,
     which have not had and would not reasonably be expected to have,
     individually or in the aggregate, a Wireless Material Adverse Effect.

          (ii) On or prior to the consummation of the Spin-off, AT&T shall have
     transferred or shall have caused its subsidiaries to transfer to AT&T
     Wireless or

                                       13
<PAGE>

     one or more of its subsidiaries all of AT&T's or its Subsidiaries' right,
     title and interest in and to all assets, properties and rights (contractual
     or otherwise) of every kind, nature and description, real, personal and
     mixed, tangible and intangible, wherever located which are required by the
     Separation Agreements to be transferred to AT&T Wireless or one or more of
     its Subsidiaries prior to such consummation. After giving effect to such
     transfers, the Spin-off and the Separation Agreements, AT&T Wireless and
     its Subsidiaries will possess, to the same extent in all material respects
     as currently possessed by the Wireless Group, the assets and rights
     necessary to conduct the business of the Wireless Group substantially as
     currently conducted.

          (r) ENVIRONMENTAL LIABILITY. There is no legal, administrative, or
other proceedings, claim or action of any nature that would reasonably be
expected to result in the imposition of, on AT&T or any of its Subsidiaries, any
liability relating to the release of hazardous substances as defined under any
local, state or federal environmental statute, regulation or ordinance,
including the Comprehensive Environmental Response, Compensation and Liability
Act of 1980, as amended (the "CERCLA"), pending or, to the knowledge of AT&T or
AT&T Wireless, threatened against AT&T or any of its Subsidiaries, the result of
which has had or would reasonably be expected to have, individually or in the
aggregate, a Wireless Material Adverse Effect; to the knowledge of AT&T or AT&T
Wireless, there is no reasonable basis for any such proceeding, claim or action;
and to the knowledge of AT&T or AT&T Wireless, neither AT&T Wireless nor any
Wireless Group Subsidiary is subject to any agreement, order, judgment or decree
by or with any Governmental Entity or third party imposing any such
environmental liability.

          (s) NO BROKERS. Except for Salomon Smith Barney, no agent, broker,
investment banker, Person or firm is or will be entitled to any broker's or
finder's fee or any other commission or similar fee payable by or allocable to
the Wireless Group directly or indirectly in connection with the transactions
contemplated by this Agreement based in any way on any arrangements, agreements
or understandings made by or on behalf of AT&T or an Affiliate thereof.

          (t) TECHNOLOGY. AT&T Wireless currently intends to introduce UMTS
(also known as W-CDMA) services and, in that regard, to deploy Global System for
Mobile Communications together with General Packet Radio Services capabilities.

          Section 2.2 REPRESENTATIONS AND WARRANTIES OF DOCOMO. DoCoMo hereby
represents and warrants to AT&T and AT&T Wireless as of November 30, 2000 that,
except as set forth in the Disclosure Schedule delivered by DoCoMo to AT&T and
AT&T Wireless and attached hereto as Schedule 2.2 (which includes each of the

                                       14
<PAGE>

individual schedules referred to in the following paragraphs of this Section
2.2) and attached hereto such that it would reasonably be concluded that such
disclosure would constitute an exception to the relevant subsection of the
following representations and warranties:

          (a) ORGANIZATION AND QUALIFICATION. DoCoMo has been duly incorporated
and is validly existing under the laws of Japan and has all requisite power and
authority to own, lease and operate its properties and to carry out its business
as it is now being conducted.

          (b) POWER AND AUTHORITY; NO VIOLATION. DoCoMo has all requisite power
and authority to execute, deliver and perform its obligations under this
Agreement, the Investor Agreement and the Warrant Agreement and to consummate
the transactions contemplated hereby and thereby. As of November 30, 2000, this
Agreement, the Investor Agreement and the Warrant Agreement and all transactions
contemplated hereby and thereby shall have been duly and validly authorized by
all necessary action on the part of DoCoMo, and upon execution and delivery by
the parties thereto of this Agreement, the Investor Agreement and the Warrant
Agreement, such agreements shall constitute, legally binding obligations of
DoCoMo, enforceable in accordance with their terms, subject to bankruptcy,
insolvency, fraudulent transfer, reorganization, moratorium and similar laws of
general applicability relating to or affecting creditors' rights. Except as
described on Schedule 2.2(b) annexed hereto, neither the execution, delivery or
performance of this Agreement, the Investor Agreement or the Warrant Agreement,
nor the consummation of the transactions contemplated by this Agreement, the
Investor Agreement or the Warrant Agreement by DoCoMo will, with or without the
giving of notice of the passage of time, or both, (i) conflict with, result in a
default or loss of rights (or give rise to any right of termination,
cancellation or acceleration) under, or result in the creation of any Lien,
pursuant to (A) any provision of the constituent documents of DoCoMo; (B) any
contract, note, bond, indenture, mortgage, deed of trust contract, agreement,
lease or other instrument or obligation to which DoCoMo is or is to be a party
or by which DoCoMo may be bound or affected; or (C) any law, order, judgment,
ordinance, rule, regulation or decree to which DoCoMo is or is to be a party or
by which DoCoMo's property is bound or affected; or (ii) give rise to any right
of first refusal or similar right with respect to any interest or any properties
or assets of DoCoMo; except in the case of subclauses (B) and (C) of clause (i)
for conflicts, defaults, losses or Liens and except in the case of clause (ii)
for rights of first refusal or similar rights that would not reasonably be
expected to have, individually or in the aggregate, a material adverse effect on
DoCoMo's ability to consummate the transactions contemplated by and perform its
obligations under this Agreement, the Investor Agreement and the Warrant
Agreement. Except as described on Schedule 2.2(b) annexed hereto, no permit,
consent, approval, Authorization, qualification or registration of, or
declaration to or filing with any

                                       15
<PAGE>

Governmental Entity or third party is required to be obtained or made by DoCoMo
in connection with the execution and delivery of this Agreement, the Investor
Agreement or the Warrant Agreement or the consummation of the transactions
contemplated by this Agreement, the Investor Agreement or the Warrant Agreement.

          (c) PURCHASE FOR INVESTMENT. DoCoMo acknowledges that the New Tracking
Stock, the Warrants, any Current Wireless Tracking Stock issued upon conversion
of the New Tracking Stock and the AT&T Wireless Common Stock to be received in
exchange for shares of New Tracking Stock or Current Wireless Tracking Stock
upon consummation of the Spin-off or issuable upon exercise of the Warrants have
not been registered under the Securities Act or under any state securities laws.
DoCoMo or one or more Designees (i) is acquiring the Securities pursuant to an
exemption from registration under the Securities Act solely for investment with
no present intention to distribute any of the Securities to any person, (ii)
will not sell or otherwise dispose of any of the Securities, except in
compliance with the registration requirements or exemption provisions of the
Securities Act and any other applicable securities laws, (iii) has such
knowledge and experience in financial and business matters and in investments of
this type that it is capable of evaluating the merits and risks of its
investment in the Securities and of making an informed investment decision and
(iv) is an accredited investor (as that term is defined by Rule 501 promulgated
under the Securities Act).

          (d) LITIGATION AND OTHER PROCEEDINGS. There is no pending or, to the
knowledge of DoCoMo, threatened, claim, action, suit, investigation or
proceeding, against DoCoMo or any of its Subsidiaries, nor is DoCoMo or any of
its Subsidiaries subject to any order, judgment or decree, except for matters
that would not reasonably be expected, individually or in the aggregate, to
materially impair DoCoMo's ability to consummate the transactions contemplated
by this Agreement, the Investor Agreement or the Warrant Agreement.

          (e) NO BROKERS. Except for Goldman, Sachs & Co., no agent, broker,
investment banker, Person or firm is or will be entitled to any
broker's or finder's fee or any other commission or similar fee directly or
indirectly in connection with the transactions contemplated by this Agreement
based in any way on any arrangements, agreements or understandings made by or on
behalf of DoCoMo.

          (f) AVAILABLE FUNDS. On or prior to the Closing Date, DoCoMo will have
available to it sufficient funds to pay the Purchase Price or balance thereof
payable on such date and, in the event of an earlier funding as contemplated by
Section 1.2, DoCoMo will have on or prior to January 15, 2001 available to it
sufficient funds to pay the portion of the Purchase Price payable on the earlier
funding date.

                                       16
<PAGE>

          Section 2.3 ADDITIONAL REPRESENTATIONS AND WARRANTIES OF DOCOMO AND/OR
DESIGNEES. DoCoMo hereby represents and warrants to AT&T and AT&T Wireless that
each Designee is, or at the time such Designee becomes such and at the Closing
shall be, directly or indirectly a wholly-owned Subsidiary of DoCoMo, and that
no Person, other than any other wholly owned Subsidiary of DoCoMo, shall own at
the time such Designee becomes such and at the Closing any equity security (or
any partnership or other interest that is in the nature of equity) of such
Designee or has or shall have on such date any right to appoint or designate any
director or member of its board of directors or similar governing body.

          Section 2.4 REPRESENTATIONS AND WARRANTIES OF THE DESIGNEES. Each
Designee, in agreeing to be bound hereby, shall make each of the representations
and warranties made by DoCoMo in Section 2.2 with respect to such Designee with
such immaterial changes as are necessary to reflect the different nature of such
Designee, such as references to jurisdiction of incorporation.

                                   ARTICLE III

                                    COVENANTS

          Section 3.1 COOPERATION AND ACCESS. Subject to applicable law,
attorney-client privilege and existing confidentiality agreements, from November
30, 2000 until the Closing, each of AT&T and AT&T Wireless shall, and shall
cause their respective Subsidiaries to, afford DoCoMo and its officers,
employees, counsel, accountant and other representatives reasonable access
during normal business hours, upon reasonable notice, to all books, records,
properties, personnel and such other information as DoCoMo may request in each
case related to the Wireless Group. All non-public information obtained by
DoCoMo and its representatives shall be maintained in confidence and used only
for the purposes related to the transactions and activities contemplated by this
Agreement.

          Section 3.2 CONDUCT OF BUSINESS. From November 30, 2000 until the
Closing, each of AT&T and AT&T Wireless shall, and shall cause their respective
Subsidiaries to, carry on the business of the Wireless Group in the ordinary
course of business, and use commercially reasonable efforts to (i) preserve
intact its present business organization, (ii) keep available the services of
its present officers and employees and (iii) preserve intact its relationships
with customers, suppliers and other third parties with whom the Wireless Group
deals (it being understood that the covenant in this sentence will not prohibit
AT&T or AT&T Wireless from taking any action

                                       17
<PAGE>

permitted under clause (a) of this Section 3.2). From the date hereof until the
Closing, each of AT&T and AT&T Wireless shall not, and shall not permit any of
their respective Subsidiaries to, without DoCoMo's prior written consent:

          (a) take any action that would be subject to DoCoMo's prior approval
under Section 3.2 of the Investor Agreement if such action were to be taken
after the Closing Date; or

          (b) with respect to AT&T, issue any equity securities to which
DoCoMo's Preemptive Rights (as defined in the Investor Agreement) would apply if
such equity securities were to be issued after the Closing Date, except for
shares of Current Wireless Tracking Stock issuable upon exercise of options
outstanding as of November 30, 2000 or issued pursuant to the AT&T Stock Option
Plan after November 30, 2000 in the ordinary course of business; provided that,
AT&T may issue such equity securities ("Permitted Securities") following
consultation with DoCoMo (but without the requirement of DoCoMo's consent) so
long as such Permitted Securities issued in the aggregate do not exceed fifteen
percent (15%) of the total Economic Interests (as defined in the Investor
Agreement) in the Wireless Group as of November 30, 2000; and provided further
that, after the Closing Date, in the event AT&T issues Permitted Securities
after November 30, 2000 and before the Closing Date, DoCoMo or one or more
Designees shall have the right (the "Pre-Closing Preemptive Right") during the
thirty (30) day period following the Closing Date to elect to purchase an
additional number of shares so that following such purchase DoCoMo (or one or
more Designees) shall own Economic Interests in the Wireless Group that would
have equaled, on the Closing Date, 16.000% of all outstanding Economic Interests
in the Wireless Group on the Closing Date (on a Fully Diluted Basis, as such
term is defined in the Investor Agreement) at the same purchase price and on
substantially the same terms and subject to substantially the same conditions as
such Permitted Securities were issued. Notice of exercise with respect to such
Pre-Closing Preemptive Rights shall specify the number of shares to be purchased
and the date on which such shares are to be purchased which shall be no later
than the fortieth (40th) day following the Closing Date. AT&T shall provide
DoCoMo with notice of the proposed issuance of Permitted Securities as soon as
reasonably practicable prior to the issuance of such securities. The closing
with respect to the exercise of any such Pre-Closing Preemptive Rights shall
take place on such 40th day or, if later, on the first Business Day following
receipt of all required regulatory approvals and expiration of all required
waiting periods but in no event later than the sixth month anniversary of the
Closing Date. For the avoidance of doubt, it is agreed and understood that (i)
any issuance of Current Wireless Tracking Stock that reflects a disposition of
all or part of AT&T's Retained Wireless Interest (i.e., that does not result in
any adjustment to the denominator of the Wireless Group Allocation Fraction)
shall not be an issuance of Permitted Securities and shall not give rise to any
Pre-Closing Preemptive Rights and (ii)

                                       18
<PAGE>

the Pre-Closing  Preemptive  Right shall not apply with respect to any issuances
between November 30, 2000 and the Closing Date pursuant to employee,  officer or
director benefit plans or arrangements which shall,  instead,  be subject to the
March 31, 2001 or September 30, 2001 notice  contemplated  by Section  8.1(a) of
the Investor Agreement.

          Section 3.3 CERTIFICATE OF AMENDMENT. AT&T shall, prior to or
concurrently with the Closing cause the Certificate of Amendment to be filed
with the Secretary of State of the State of New York.

          Section 3.4 PROCEEDS. AT&T shall be entitled to retain $3,651,615,431
of the proceeds from the payment of the Purchase Price, and the remainder shall
be contributed to AT&T Wireless. AT&T shall, simultaneously with the Closing,
contribute $6,159,464,289 of the proceeds from the payment of the Purchase Price
to AT&T Wireless, provided that in the event that the Closing Date occurs prior
to January 22, 2001, as a result of the required early funding related to a
spectrum acquisition, then AT&T shall, simultaneously with such Closing,
contribute 100% of the proceeds paid on such date to AT&T Wireless and, on
January 22, 2001, shall contribute such portion of the balance of the Purchase
Price paid on that date such that on or prior to such date AT&T shall have
contributed $6,159,464,289 of the proceeds to AT&T Wireless.

          Section 3.5 LISTING OF SHARES. As soon as practicable, but in any
event prior to the Closing Date, AT&T shall use its reasonable efforts to cause
the shares of Current Wireless Tracking Stock into which the shares of New
Tracking Stock are convertible to be listed for trading on the New York Stock
Exchange, subject to official notice of issuance.

          Section 3.6 COMMERCIALLY REASONABLE EFFORTS; GOVERNMENT APPROVALS.

          (a) Upon the terms and subject to the conditions herein provided, each
of the parties hereto agrees to use all reasonable efforts to take, or cause to
be taken, all action and to do, or cause to be done, all things necessary for it
to do under applicable laws and regulations to consummate and make effective the
transactions contemplated by this Agreement, including, without limitation, (i)
to comply promptly with all legal requirements which may be imposed on it with
respect to this Agreement and the transactions contemplated hereby (which
actions shall include, without limitation, furnishing all information required
by applicable laws and regulations in connection with approvals of or filings
with any Governmental Entity), (ii) to satisfy the conditions precedent to the
obligations of the parties hereto and (iii) to obtain any consent,
authorization, order or approval of, or any exemption by, any Governmental
Entity or other public or private third party required to be obtained or made by
DoCoMo, AT&T or

                                       19
<PAGE>


any Subsidiary of AT&T in connection with the taking of any action contemplated
by this Agreement, the Investor Agreement or the Warrant Agreement.

          (b) Subject to appropriate confidentiality protections, each of the
parties hereto shall furnish to the other party such necessary information and
reasonable assistance as such other party may reasonably request in connection
with the foregoing and shall provide the other party with copies of all filings
made by such party with any Governmental Entity and, upon request, any other
information supplied by such party to a Governmental Entity in connection with
this Agreement and the transactions contemplated hereby or by the Investor
Agreement or the Warrant Agreement.

          (c) Without limiting the generality of the foregoing, DoCoMo and AT&T
agree to take or cause to be taken the following actions: (i) provide promptly
to Governmental Entities with regulatory jurisdiction over enforcement of any
applicable Competition Laws ("Governmental Antitrust Entity") information and
documents requested by any Governmental Antitrust Entity or necessary, proper or
advisable to permit consummation of the transactions contemplated by this
Agreement and (ii) without in any way limiting the other provisions of this
Section 3.6, file any notification and report form and related material required
under the HSR Act and with respect to the filings required under any foreign
competition laws as soon as practicable, and thereafter use reasonable efforts
to certify as soon as practicable its substantial compliance with any requests
for additional information or documentary material that may be made under the
HSR Act. Each party hereto shall provide to the other copies of all
correspondence between it (or its advisor) and any Governmental Entity relating
to any matters described in this Section 3.6. Each party hereto will notify the
other of all requests, terms or conditions made or sought to be imposed on
DoCoMo, AT&T, AT&T Wireless or any of their respective Subsidiaries in
connection with obtaining any required approvals and will discuss with the other
party the acceptability of such requests. Each party hereto agrees that each
other party (other than any Designees of DoCoMo) shall have the right to
participate in any meeting between the first party and any Governmental
Antitrust Entity relating to any matters described in this Section 3.6.

          Section 3.7 ADJUSTMENT OF THE ALLOCATION FRACTION. In order to
properly reflect the economic interest of the Wireless Group represented by the
New Tracking Stock, AT&T agrees to take the following actions: Upon application
of the proceeds in accordance with Section 3.4, AT&T agrees that in accordance
with a determination of the AT&T Board of Directors pursuant to the Certificate
of Incorporation, the numerator of the Wireless Group Allocation Fraction shall
be increased by 406,255,889 (representing the total number of shares of Current
Wireless Tracking Stock into which the New Tracking Stock is convertible) and
the denominator of the Wireless Group Allocation Fraction shall be increased by
228,128,307 (representing the total number of shares of

                                       20
<PAGE>

Current Wireless Tracking Stock into which the New Tracking Stock deemed issued
for the account of the Wireless Group is convertible). In the event the Warrants
are exercised to purchase shares of New Tracking Stock or Current Wireless
Tracking Stock, the numerator and the denominator of the Wireless Group
Allocation Fraction will be increased by the number of shares of Current
Wireless Tracking Stock into which the New Tracking Stock issued upon exercise
of the Warrants is convertible or by the number of shares of Current Wireless
Tracking Stock issued upon exercise of such Warrants, as the case may be. No
further adjustment of the numerator or the denominator of the Wireless Group
Allocation Fraction shall be made upon any conversion of New Tracking Stock into
Current Wireless Tracking Stock. For purposes of any calculation under the
Certificate of Incorporation that uses the Wireless Group Allocation Fraction,
(i) all outstanding shares of New Tracking Stock will be treated as if they had
been fully converted into Current Wireless Tracking Stock, (ii) any payments or
exchange rights of the holder of New Tracking Stock will be deemed payments or
exchange rights in respect of the underlying Current Wireless Tracking Stock and
(iii) any payments or exchange rights of the holders of shares of Current
Wireless Tracking Stock actually outstanding as of any calculation date shall be
based on the foregoing adjusted Wireless Group Allocation Fraction further
adjusted to subtract from the numerator thereof the number of shares of Current
Wireless Tracking Stock issuable upon conversion of the then outstanding New
Tracking Stock. For the avoidance of doubt, the intent of the foregoing is (a)
to treat 456,256.614 shares of New Tracking Stock (and the 228,128,307 shares of
Current Wireless Tracking Stock issuable upon conversion thereof) as having been
issued for the account of AT&T Wireless as primary shares, and (b) to treat
356,255.164 shares of New Tracking Stock (and the 178,127,582 shares of Current
Wireless Tracking Stock issuable upon conversion thereof) as having been issued
for the account of AT&T as secondary shares.

          Section 3.8 FURTHER ASSURANCES; SPIN-OFF. Each party shall execute and
deliver both before and after the Closing such further certificates, agreements
and other documents and take such other actions as the other party may
reasonably request as may be necessary or appropriate to consummate or implement
the transactions contemplated hereby or to evidence such events or matters. Each
of AT&T and AT&T Wireless shall use such party's reasonable efforts to enter
into, prior to January 1, 2002, definitive separation agreements substantially
in the form of the Separation Agreements in the form annexed to the Letter
Agreement with such changes thereto as would not require the consent of DoCoMo
under Section 3.2(a)(vi) of the Investor Agreement and would not have a material
adverse effect on DoCoMo. AT&T and AT&T Wireless shall deliver to DoCoMo a copy
of (A) the then current draft of the Separation and Distribution Agreement upon
DoCoMo's request, PROVIDED, that AT&T and AT&T Wireless shall not be required to
comply with such request more frequently than one (1) time per month, (B) within
a reasonable amount of time prior to the execution and delivery of the final
forms

                                       21

<PAGE>

of the Separation Agreements, such final forms and (C) the Separation Agreements
in the form executed and delivered promptly following the execution and delivery
thereof. In the event the Spin-off is to be effected by spinning off the
Wireless Group as the assets of an entity other than AT&T Wireless, the
corporation that is the subject of the Spin-off (and that is or is to be the
issuer of publicly traded common stock representing the former AT&T Wireless
Group) shall execute this Agreement and, upon doing so, shall be substituted for
AT&T Wireless and thereafter be deemed to be a party hereto and all references
herein to "AT&T Wireless" shall thereafter be deemed to be references to such
substituted corporation.

                                   ARTICLE IV

                                   CONDITIONS

          Section 4.1 CONDITIONS TO OBLIGATIONS OF THE PARTIES. The respective
obligations of the parties hereto to consummate the transactions contemplated
hereby are subject to the satisfaction or waiver at or prior to the Closing of
each of the following conditions:

          (a) The expiration or early termination of any applicable waiting
period under the HSR Act;

          (b) The absence of any statute, rule regulation, executive order,
decree or injunction having been enacted, entered, promulgated or enforced by
any Governmental Entity of the United States, Japan, Canada or Mexico that has
the effect of making the Investment illegal or otherwise prohibiting the
consummation of the Investment or that prohibits AT&T Wireless or DoCoMo from
entering into the Alliance materially as contemplated by the Investor Agreement;
and

          (c) The receipt or expiration of any other material approval or
waiting period required by a Governmental Entity, if any.

          Section 4.2 CONDITIONS TO THE OBLIGATIONS OF DOCOMO. The obligations
of DoCoMo to consummate the transactions contemplated hereby are subject to the
satisfaction or waiver at or prior to the Closing of each of the following
conditions:

          (a) Each of the representations and warranties of AT&T and AT&T
Wireless contained in this Agreement shall be true and accurate (in all material
respects in the case of any such representation or warranty that is not
qualified by materiality) as

                                       22

<PAGE>

of the Closing Date as if made on and as of such date (except that
representations and warranties that by their terms speak only as of some other
date need be true and accurate as of such other date);

          (b) Each of AT&T and AT&T Wireless shall have performed and complied
in all material respects with all covenants and agreements contained in this
Agreement that are required to be performed or complied with by AT&T or AT&T
Wireless at or prior to the Closing;

          (c) Each of AT&T and AT&T Wireless shall have delivered to DoCoMo a
certificate of an executive officer of such party certifying as to the matters
set forth in paragraph (a) and paragraph (b) of this Section 4.2 with respect to
AT&T and AT&T Wireless, respectively;

          (d) Each of AT&T and AT&T Wireless shall have executed and delivered
the Investor Agreement and the Warrant Agreement and such agreements shall be in
full force and effect or shall become so by virtue of the Closing;

          (e) The Certificate of Amendment shall have been duly filed with the
Secretary of State of the State of New York in accordance with the laws of the
State of New York and the Certificate of Amendment shall be in full force and
effect; and

          (f) DoCoMo shall have received an opinion from Wachtell, Lipton, Rosen
and Katz, outside counsel to AT&T, subject to customary qualifications, as to
(i) the due authorization and validity of the New Tracking Stock, the Current
Wireless Tracking Stock issuable upon conversion thereof, the AT&T Wireless
Common Stock issuable in exchange for Current Wireless Tracking Stock in the
Spin-off, the Warrants and the New Tracking Stock, Current Wireless Tracking
Stock or AT&T Wireless Common Stock issuable upon exercise thereof and (ii) the
absence of conflict of the Investment with the Certificate of Incorporation, as
amended and in effect on the date of such opinion.

          Section 4.3 CONDITIONS TO THE OBLIGATIONS OF AT&T AND AT&T WIRELESS.
The obligations of AT&T and AT&T Wireless to consummate the transactions
contemplated hereby shall be subject to the satisfaction or waiver at or prior
to the Closing of each of the following additional conditions:

          (a) Each of the representations and warranties of DoCoMo contained in
this Agreement shall be true and accurate as of the Closing, as if made on and
as of such date (except that representations and warranties that by their terms
speak only as of some other date need be true and accurate as of such other
date);

                                       23
<PAGE>

          (b) DoCoMo shall have performed and complied in all material respects
with all covenants and agreements contained in this Agreement that are required
to be performed or complied with by DoCoMo at or prior to the Closing;

          (c) DoCoMo shall have delivered to AT&T and AT&T Wireless a
certificate of an executive officer of DoCoMo certifying as to the matters set
forth in paragraph (a) and paragraph (b) of this Section 4.3; and

          (d) DoCoMo shall have executed and delivered the Investor Agreement
and the Warrant Agreement and each such agreement shall be in full force and
effect or shall become so by virtue of the Closing.

                                    ARTICLE V

                                   TERMINATION

          Section 5.1 GROUNDS FOR TERMINATION. This Agreement may be terminated
only as follows:

          (a) MUTUAL AGREEMENT. At any time, by the mutual written agreement of
the respective boards of directors of DoCoMo and AT&T;

          (b) EXPIRATION. If the transactions contemplated by this Agreement are
not consummated on or before March 31, 2001 (which date shall be extended to
August 15, 2001 in the event that the failure to consummate the Investment on or
prior to March 31, 2001 is due to the failure of any condition set forth in
Section 4.1), then any party hereto (other than any party (treating DoCoMo and
its Designees as a single party, and treating AT&T and AT&T Wireless as a single
party) whose failure to comply with such party's obligations under this
Agreement shall have caused the delay in Closing, and other than any party that
has failed to use such party's reasonable best efforts to consummate the
transactions contemplated by this Agreement), may terminate this Agreement by
sending written notice to each other party to this Agreement.

          (c) CONTRAVENTION OF LAW. If any of the conditions set forth in
Section 4.1 becomes permanently incapable of being satisfied by virtue of any
order, decree or ruling or any other action taken by any Governmental Entity
that is final and nonappealable, then any party to this Agreement (other than
any party (treating DoCoMo and its Designees as a single party, and treating
AT&T and AT&T Wireless as a single party) whose failure to comply with such
party's obligations under this Agreement shall have caused such failure to occur
or who has failed to use such party's reasonable best efforts

                                       24

<PAGE>

to cause any such order, decree or ruling to be lifted, reversed or vacated),
may terminate this Agreement.

          Section 5.2 EFFECT OF TERMINATION. If this Agreement is terminated
pursuant to Section 5.1, such termination shall be without liability of any
party to any other party to this Agreement; PROVIDED, HOWEVER, that nothing
herein shall relieve any party from liability for any breach prior to such
termination.

                                   ARTICLE VI

                                 INDEMNIFICATION

          Section 6.1 INDEMNIFICATION OBLIGATIONS OF AT&T AND AT&T WIRELESS.
Subject to the limitations set forth in this Article VI:

          (a) AT&T shall indemnify DoCoMo, its Designees and each of DoCoMo's
officers, directors, employees, shareholders, representatives and agents (the
"DoCoMo Indemnified Persons") against and hold them harmless from all Losses
arising out of any breach of any of AT&T's representations or warranties
contained in Section 2.1 (a)(i); Section 2.1(b), insofar as the breach relates
to the Certificate of Incorporation or AT&T's by-laws; Section 2.1(c), insofar
as the breach relates to AT&T; the first sentence of Section 2.1(d); Section
2.1(f), insofar as the breach relates to the New Tracking Stock or the Current
Wireless Tracking Stock; Section 2.1(p), insofar as the breach relates to AT&T;
and Section 2.1(q)(ii); PROVIDED, HOWEVER, that, solely for purposes of this
Section 6.1, in determining whether there has been a breach of a representation
or warranty all materiality qualifiers contained in such representation or
warranty will be disregarded, but no representation or warranty shall be deemed
breached to the extent resulting from the impact of (i) changes in laws of
general applicability or interpretations thereof by Governmental Entities, (ii)
changes in generally applicable provisions of GAAP or (iii) changes in general
economic conditions affecting companies in the wireless telecommunications
industry generally.

          (b) AT&T Wireless shall indemnify DoCoMo Indemnified Persons against
and hold them harmless from all Losses arising out of any breach of any of the
representations or warranties contained in Section 2.1 other than those
described in paragraph (a) of this Section 6.1; PROVIDED, HOWEVER, that solely
for purposes of this Section 6.1, in determining whether there has been a breach
of a representation or warranty all materiality qualifiers contained in such
representation or warranty will be disregarded, but no representation or
warranty shall be deemed breached to the extent resulting from the impact of (i)
changes in laws of general applicability or interpretations

                                       25

<PAGE>

thereof by Governmental Entities, (ii) changes in generally applicable
provisions of GAAP or (iii) changes in general economic conditions affecting
companies in the wireless telecommunications industry generally.

          (c) AT&T GUARANTEE. AT&T hereby irrevocably guarantees and promises to
pay the obligations of AT&T Wireless under Section 6.1(b) upon the failure of
AT&T Wireless to make any payment due to DoCoMo under Section 6.1(b).
Notwithstanding the foregoing, (i) in the event that AT&T Wireless contests its
liability under Section 6.1(b) with respect to a claim by DoCoMo hereunder, AT&T
shall have no obligation to make such payment with respect to the contested
portion of such obligation until AT&T Wireless's liability shall have been
resolved by a final and unappealable determination or until the parties shall
have resolved their dispute as to such liability and AT&T Wireless thereafter
fails to make such payment and (ii) in any event, AT&T shall have no obligation
to make such payment unless DoCoMo shall have used commercially reasonable
efforts to collect payment from AT&T Wireless. In the event AT&T makes any
payment to DoCoMo pursuant to this guarantee, AT&T Wireless shall be obligated
to reimburse and indemnify AT&T for such payment (including any costs incurred
by AT&T), PROVIDED that AT&T hereby agrees that any such liability or obligation
is hereby subordinated and made junior to all obligations and liabilities of
AT&T Wireless to DoCoMo under this Section 6.1 and that AT&T will not receive or
retain any payments with respect to AT&T Wireless's liabilities or obligations
as a result of such guarantee until the prior indefeasible payment in full of
AT&T Wireless's obligations to DoCoMo under this Section 6.1.

          Section 6.2 DOCOMO'S INDEMNIFICATION OBLIGATIONS. Subject to the
limitations set forth in this Article VI, DoCoMo shall indemnify AT&T and AT&T
Wireless and each of their respective officers, directors, shareholders,
representatives and agents (the "AT&T Indemnified Persons") against and hold
them harmless from Losses arising out of any breach of any of DoCoMo's
representations and warranties contained in this Agreement PROVIDED, HOWEVER,
that, solely for purposes of this Section 6.2, in determining whether there has
been a breach of a representation or warranty all materiality qualifiers
contained in such representation or warranty will be disregarded, but no
representation or warranty shall be deemed breached to the extent resulting from
the impact of (i) changes in laws of general applicability or interpretations
thereof by Governmental Entities, (ii) changes in generally applicable
provisions of GAAP or (iii) changes in general economic conditions affecting
companies in the wireless telecommunications industry generally.

          Section 6.3 LIMITATIONS ON INDEMNITY. No party shall be required to
make any payment with respect to its indemnification obligations under this
Article VI until such time as the obligations to the DoCoMo Indemnified Persons,
on the one hand, or the

                                       26
<PAGE>

AT&T Indemnified Persons, on the other hand, exceed $200 million in the
aggregate (the "Deductible"); provided that once such Losses exceed the
Deductible, the indemnifying party shall be responsible for all amounts in
excess thereof; provided further that no party hereunder shall be required to
make any payment hereunder to the extent that the AT&T Indemnified Persons'
Losses (with respect to the obligation of DoCoMo) or the DoCoMo Indemnified
Persons' Losses (with respect to the obligations of AT&T and AT&T Wireless)
exceed $5 billion (the "Maximum Amount"). In addition, the amounts payable by
AT&T with respect to its obligation to guarantee the indemnification obligations
of AT&T Wireless under Section 6.1(c) and its indemnification obligations under
Section 6.1(a) shall not in any event exceed $3.65 billion in the aggregate.
Notwithstanding the foregoing, the limitation imposed by the Maximum Amount
shall not apply to a breach of the representation and warranty set forth in the
first sentence of Section 2.1(f).

          Section 6.4 METHOD OF ASSERTING CLAIMS, ETC. All claims for
indemnification by any AT&T Indemnified Person or DoCoMo Indemnified Person
(each an "Indemnified Party") shall be asserted and resolved as set forth in
this Section 6.4. Any Indemnified Party seeking indemnity pursuant to Section
6.1 or Section 6.2 shall notify in writing the party from whom indemnification
is sought (the "Indemnifying Party") of such demand for indemnification. The
Indemnifying Party shall have thirty (30) days from the personal delivery or
mailing of such notice (the "Notice Period") to notify the Indemnified Party (i)
whether or not the Indemnifying Party disputes the liability of the Indemnifying
Party to the Indemnified Party hereunder with respect to such claim or demand
and (ii) whether or not it desires to defend the Indemnified Party against such
claim or demand with respect to a claim or demand based on a third party claim
(a "Third Party Claim"). In the event that the Indemnifying Party notifies the
Indemnified Party within the Notice Period that, with respect to a Third Party
Claim, it desires to defend the Indemnified Party against such Third Party
Claim, the Indemnifying Party shall have the right to defend the Indemnified
Party at the Indemnifying Party's sole cost and expense and with counsel (plus
local counsel if appropriate) reasonably satisfactory to the Indemnified Party.
If the Indemnifying Party's right to assume the defense is exercised, the
Indemnifying Party shall be deemed to have waived all rights to contest its
liability to the Indemnified Party in respect of such Third Party Claim. No
Indemnifying Party shall, without the prior written consent of the Indemnified
Party, compromise or consent to entry of any judgment or enter into any
settlement agreement with respect to any action or proceeding in respect of
which indemnification is sought under Sections 6.1 or 6.2 (whether or not the
Indemnified Party is an actual or potential party thereto), unless such
compromise, consent or settlement includes an unconditional release of the
Indemnified Party to any material injunctive relief or other material equitable
remedy and does not include a statement or admission of fault, culpability or a
failure to act, by or on behalf of the Indemnified Party. If the right to assume
and control

                                       27
<PAGE>

the defense is exercised, the Indemnified Party shall have the right to
participate in, but not control, such defense at its own expense and the
Indemnifying Party's indemnity obligations shall be deemed not to include
attorneys' fees and litigation expenses incurred in such participation by the
Indemnified Party after the assumption of the defense by the Indemnifying Party
in accordance with the terms hereof; PROVIDED, HOWEVER, that the Indemnified
Parties collectively shall be entitled to employ one firm or separate counsel
(plus local counsel if appropriate) to represent the Indemnified Party if, in
the opinion of counsel to each Indemnified Party seeking to employ such separate
counsel, a conflict of interest between such Indemnified Party or Parties and
the Indemnifying Party exists in respect of such claim and in each such event,
the fees, costs and expenses of one such firm or separate counsel (plus one
local counsel per jurisdiction if appropriate) shall be paid in full by the
Indemnifying Party. If the Indemnifying Party has not elected to assume the
defense of a Third Party Claim within the Notice Period, the Indemnified Party
may defend and settle the claim for the account and cost of the Indemnifying
Party; PROVIDED, that the Indemnified Party will not settle the Third Party
Claim without the prior written consent of the Indemnifying Party, which consent
shall not be unreasonably withheld. The Indemnifying Party will promptly pay, or
reimburse the Indemnified Party for payment of, all costs and expenses
(including reasonable fees and expenses of one counsel plus one local counsel
per jurisdiction, if appropriate) incurred in the defense thereof. The
Indemnified Party shall cooperate with the Indemnifying Party and, subject to
obtaining proper assurances of confidentiality and privilege, shall make
available to the Indemnifying Party all pertinent information under the control
of the Indemnified Party.

          Section 6.5 EXCLUSIVE REMEDY; SURVIVAL

          (a) The indemnity provided herein shall be the sole and exclusive
remedy with respect to any and all claims for Losses sustained or incurred
arising out of a breach of a representation or warranty contained in this
Agreement, except in the case of any claim based on fraud or intentional
misrepresentation; PROVIDED, HOWEVER, that nothing in this Section 6.5 shall be
construed to affect in any manner the rights of DoCoMo or one or more Designees
to exercise the rights contained in Sections 3.2, 3.3, 4.3 or 4.4 of the
Investor Agreement; PROVIDED FURTHER that nothing contained herein shall affect
DoCoMo's rights as a shareholder of AT&T following the Closing or as a
stockholder of AT&T Wireless following consummation of the Spin-off.

          (b) All indemnification obligations under this Article VI shall
terminate and expire on, and no action or proceedings seeking damages or other
relief for breach of any part thereof shall be commenced after, the thirtieth
(30th) day following completion of the first year-end audit of AT&T Wireless
after the date of the Spin-off or, if earlier, the thirtieth (30th) day
following completion of the second year-end audit of the Wireless Group
following the Closing; PROVIDED, HOWEVER, that the representations and
warranties

                                       28
<PAGE>

contained in the first sentence of Section 2.1(f) shall expire only when the
applicable statute of limitations shall have run; AND PROVIDED FURTHER, that any
claim that has been asserted by notice to the other party in such detail that
the claim in question could reasonably be ascertained therefrom and that is
pending or unresolved at the end of such applicable period shall continue to be
covered by this Article VI notwithstanding any applicable expiration of the
indemnification obligations set forth in Article VI until such matter is finally
terminated or otherwise resolved by the parties or by arbitration proceedings
provided for in Section 8.11, or, if such proceedings are unavailable or
inapplicable, by a final and nonappealable judgment of a court of competent
jurisdiction and any amounts payable hereunder are finally determined and paid.

                                   ARTICLE VII

                               CERTAIN DEFINITIONS

          Section 7.1 CERTAIN DEFINITIONS. For all purposes of this Agreement,
except as otherwise expressly provided or unless the context otherwise requires:

          "AFFILIATE" shall mean a Person that directly, or indirectly through
one or more intermediaries, controls, or is controlled by, or is under common
control with, a specified Person; PROVIDED, HOWEVER, that for so long as At Home
Corporation, a Delaware corporation, or Liberty Media Corporation, a Delaware
corporation, and each other corporation constituting part of the Liberty Media
Group as defined in the Certificate of Incorporation, and their successors and
assigns ("AT HOME" and "LIBERTY MEDIA," respectively) has any public
stockholders (directly, or through a tracking stock or similar concept), At Home
or Liberty Media, as the case may be, and any Affiliates or Subsidiaries of
Liberty Media, At Home or any of their respective Subsidiaries shall not be
treated as or deemed to be Affiliates of AT&T or of any of AT&T's Subsidiaries
or Affiliates for purposes hereof. For the purposes of this definition,
"control" (including, with correlative meanings, the terms "controlling",
"controlled by" and "under common control with"), as applied to any Person,
means the possession, directly or indirectly, of the power to direct or cause
the direction of the management and policies of that Person, whether through the
ownership of voting securities or by contract or otherwise.

          "AGREEMENT" shall have the meaning set forth in the preamble hereof.

          "ALLIANCE" shall have the meaning set forth in the Investor Agreement.

          "AT&T" shall have the meaning set forth in the preamble hereof.



                                       29
<PAGE>

          "AT&T INDEMNIFIED PERSONS" shall have the meaning set forth in Section
6.2.

          "AT&T REPORTS" shall have the meaning set forth in Section 2.1(g).

          "AT&T STOCK OPTION PLANS" shall mean the 1997 Long-Term Incentive Plan
of AT&T and any other employee benefit plan of AT&T under which awards based on
Current Wireless Tracking Stock have been or may be issued.

          "AT&T WIRELESS COMMON STOCK" shall mean the common stock, par value
$0.01 per share, of AT&T Wireless as of and following the Spin-off.

          "AT&T WIRELESS" shall have the meaning set forth in the preamble
hereto.

          "AUTHORIZATION" shall mean any franchise, license, authorization,
consent, permit, waiver, approval, qualification or registration of, with or
from the FCC, any state public utility or public service commission, or any
other Governmental Entity.

          "BUSINESS DAY" shall mean any day other than a Saturday, Sunday or a
legal holiday in New York City, New York or Tokyo, Japan, or any other day on
which commercial banks in those locations are authorized by law or governmental
decree to close; provided that, for the purposes of the Closing or determination
of the Closing Date, Business Day shall also exclude any Saturday, Sunday or
legal holiday in London, England, or any other day on which commercial banks in
London, England are authorized by law or governmental decree to close.

          "CERCLA" shall have the meaning set forth in Section 2.1(r).

          "CERTIFICATE OF AMENDMENT" shall have the meaning set forth in the
recitals.

          "CERTIFICATE OF INCORPORATION" shall mean AT&T's certificate of
incorporation, filed by the Department of State of the State of New York on
March 3, 1885, as amended and in effect on the date hereof.

          "CLASS A LIBERTY MEDIA GROUP COMMON STOCK" and "CLASS B LIBERTY MEDIA
GROUP COMMON STOCK" shall have the meanings ascribed thereto in the Certificate
of Incorporation.

          "CLOSING" shall have the meaning set forth in Section 1.2.

          "CLOSING DATE" shall have the meaning set forth in Section 1.2.

                                       30
<PAGE>

          "CODE" shall have the meaning set forth in Section 2.1(o)(i).

          "COMMON STOCK" shall have the meaning ascribed thereto in the
Certificate of Incorporation.

          "COMMON STOCK GROUP" shall mean the Common Stock Group as defined in
the Certificate of Incorporation as in effect on the date hereof.

          "COMMUNICATIONS ACT" shall mean the Communications Act of 1934 and
Telecommunications Act of 1996, both as amended from time to time, and all rules
and regulations promulgated under either thereof.

          "CURRENT WIRELESS TRACKING STOCK" shall have the meaning set forth in
the recitals hereto.

          "DEDUCTIBLE" shall have the meaning set forth in Section 6.3.

          "DESIGNEE" shall have the meaning set forth in Section 8.2. Each party
that is a Designee at any relevant time shall be deemed to be a party to this
Agreement for all purposes hereof.

          "DISCLOSURE SCHEDULE" OR "SCHEDULE" shall mean either of the
disclosure schedules attached to this Agreement.

          "DOCOMO" shall have the meaning set forth in the preamble hereof.

          "DOCOMO INDEMNIFIED PERSONS" shall have the meaning set forth in
Section 6.1(a).

          "ECONOMIC INTERESTS" shall have the meaning set forth in the Investor
Agreement.

          "ERISA" shall have the meaning set forth in Section 2.1(o)(i).

          "ERISA AFFILIATE" shall have the meaning set forth in Section
2.1(o)(ii).

          "EXCHANGE ACT" shall mean the Securities Exchange Act of 1934, or any
successor federal statute, and the rules and regulations promulgated thereunder,
all as amended, and as the same may be in effect from time to time.

                                       31
<PAGE>

          "FCC" shall mean the United States Federal Communications Commission,
or any other similar or successor agency of the Federal government administering
the Communications Act.

          "GAAP" means generally accepted accounting principles in the United
States (with respect to AT&T or AT&T Wireless) or in Japan (with respect to
DoCoMo), as applicable.

          "GOVERNMENTAL ANTITRUST ENTITY" shall have the meaning set forth in
Section 3.6(c).

          "GOVERNMENTAL ENTITY" shall mean any court, administrative agency or
commission or other federal, state, foreign or local governmental authority or
instrumentality.

          "HSR ACT" shall mean the Hart-Scott-Rodino Antitrust Improvements Act
of 1976, as amended.

          "INDEMNIFIED PARTY" shall have the meaning set forth in Section 6.4.

          "INDEMNIFYING PARTY" shall have the meaning set forth in Section 6.4.

          "INTELLECTUAL PROPERTY" shall have the meaning set forth in Section
2.1(k).

          "INVESTMENT" shall mean the purchase by DoCoMo (or one or more
Designees) of the shares of New Tracking Stock and the Warrants contemplated by
this Agreement.

          "INVESTOR AGREEMENT" shall have the meaning set forth in the recitals.

          "LETTER AGREEMENT" shall have the meaning set forth in the recitals
hereto.

          "LIEN" shall mean any mortgage, pledge, security interest, lien,
charge, encumbrance, equity, claim, option, easement, right of way, right of
refusal, tenancy, right or restriction on transfer of any nature whatsoever.

          "LOSSES" shall mean any and all fines, liabilities, judgments, claims,
losses, costs, expenses, or damages, including in each case (but without
duplication of any provision hereof), interest, penalties, reasonable attorneys'
fees and reasonable costs of investigations and litigation.

          "MAXIMUM AMOUNT" shall have the meaning set forth in Section 6.3.

                                       32
<PAGE>

          "NEW TRACKING STOCK" shall have the meaning set forth in the recitals
hereto.

          "NOTICE PERIOD" shall have the meaning set forth in Section 6.4.

          "PENSION PLAN" shall have the meaning set forth in Section 2.1(o)(ii).

          "PERMITTED SECURITIES" shall have the meaning set forth in Section
3.2(b).

          "PERSON" shall mean a legal person, including any individual,
corporation, company, partnership, joint venture, association, joint-stock
company, trust, limited liability company or unincorporated association or any
other entity or organization, including a government or any agency or political
subdivision thereof, or any other entity of whatever nature.

          "PLAN" shall have the meaning set forth in Section 2.1(o)(i).

          "PRE-CLOSING PREEMPTIVE RIGHT" shall have the meaning set forth in
Section 3.2(b).

          "PREFERRED STOCK" shall have the meaning set forth in the Certificate
of Incorporation.

          "PURCHASE PRICE" shall have the meaning set forth in Section 1.1.

          "RELATED AGREEMENTS" shall mean the Investor Agreement, the Warrant
Agreement, that certain letter agreement, dated as of November 30, 2000,
executed and delivered among DoCoMo, AT&T and AT&T Wireless concurrently with
the execution and delivery of the Letter Agreement, that certain roaming side
letter, dated the date hereof, executed and delivered among DoCoMo, AT&T and
AT&T Wireless (and any letters or schedules referred to therein) and the
Certificate of Amendment.

          "RIGHTS" shall mean, with respect to any Person, securities or
obligations convertible into or exercisable or exchangeable for, or giving any
other Person any right to subscribe for or acquire, or any options, calls or
commitments relating to, or any stock appreciation right or other instrument the
value of which is determined in whole or in part by reference to the market
price or value of, shares of capital stock of such first Person.

          "SEC" shall mean the Securities and Exchange Commission.

                                       33
<PAGE>

          "SECURITIES" shall have the meaning set forth in the recitals hereto.

          "SECURITIES ACT" shall mean the Securities Act of 1933, and any
similar or successor federal statute, and the rules and regulations promulgated
thereunder, all as amended, and as the same may be in effect from time to time.

          "SEPARATION AGREEMENTS" shall have the meaning set forth in Section
2.1(e).

          "SPIN-OFF" shall mean the spin-off of AT&T Wireless in accordance with
the Separation Agreements as amended or revised to the extent not prohibited by
the Investor Agreement. The Spin-off shall be deemed to have been consummated
following completion of the exchange of AT&T Wireless Common Stock for Current
Wireless Tracking Stock and the distribution of the remaining shares of AT&T
Wireless Common Stock to holders of common stock of AT&T. For all purposes of
this Agreement, the Spin-off shall not be a "transaction contemplated by this
Agreement."

          "SUBSIDIARY" shall mean, with respect to any Person, any other Person
more than fifty percent (50%) of the shares of the voting stock or other voting
interests of which are owned or controlled, or the ability to select or elect
more than fifty percent (50%) of the directors or similar managers is held,
directly or indirectly, by such first Person or one or more of its Subsidiaries
or by such first person and one or more of its Subsidiaries; PROVIDED, HOWEVER,
that for so long as At Home or Liberty Media, as the case may be, has any public
stockholders (directly, or through a tracking stock or similar concept), At Home
or Liberty Media, as the case may be, and their respective Subsidiaries shall
not be treated as or deemed to be Subsidiaries of AT&T or of any of AT&T's
Subsidiaries or Affiliates for purposes hereof. A Subsidiary that is directly or
indirectly wholly owned by another Person except for directors' qualifying
shares shall be deemed wholly owned for the purposes of this Agreement.

          "TAX" shall have the meaning set forth in Section 2.1(n)(iv).

          "TAX RETURN" shall have the meaning set forth in Section 2.1(n)(iv).

          "THIRD PARTY CLAIM" shall have the meaning set forth in Section 6.4.

          "WARRANTS" shall have the meaning set forth in the recitals hereto.

          "WARRANT AGREEMENT" shall mean the Warrant Agreement with respect to
the issuance of the Warrants in the form attached hereto as Exhibit B.

                                       34
<PAGE>

          "WIRELESS GROUP" shall mean the Wireless Group as defined in the
Certificate of Incorporation of AT&T as in effect on the date hereof.

          "WIRELESS GROUP ALLOCATION FRACTION" shall have the meaning set forth
in the Certificate of Incorporation as in effect on November 30, 2000.

          "WIRELESS GROUP SUBSIDIARY" shall mean any Subsidiary of AT&T Wireless
and any Subsidiary of AT&T that is engaged in the business of the Wireless
Group.

          "WIRELESS INTELLECTUAL PROPERTY" shall have the meaning set forth in
Section 2.1(k).

          "WIRELESS MATERIAL ADVERSE EFFECT" shall mean any effect that (a) is
material and adverse to the financial condition, results of operations or
business of AT&T Wireless or the Wireless Group Subsidiaries, taken as a whole
or the Wireless Group, excluding the impact of (i) changes in laws of general
applicability or interpretations thereof by Governmental Entities, (ii) changes
in generally applicable provisions of GAAP or (iii) changes in general economic
conditions affecting companies in the wireless telecommunications industry
generally, or (b) would materially impair the ability of AT&T or AT&T Wireless
to perform its obligations in all material respects under this Agreement, the
Investor Agreement or the Warrant Agreement or to consummate the transactions
contemplated this Agreement, the Investor Agreement or the Warrant Agreement.

          Section 7.2 INTERPRETATION. When a reference is made in this Agreement
to an Article, Section, Exhibit or Schedule, such reference is to an Article or
Section of, or an Exhibit or Schedule to, this Agreement unless otherwise
indicated. The table of contents and headings contained in this Agreement are
for reference purposes only and shall not affect in any way the meaning or
interpretation of this Agreement. Whenever the words "include," "includes" and
"including" are used in this Agreement, they are deemed to be followed by the
words "without limitation." For all purposes of this Agreement, except as
otherwise expressly provided or unless the context otherwise requires, (a) the
terms defined include the plural as well as the singular, (b) all accounting
terms not otherwise defined herein have the meanings assigned under GAAP, and
(c) the words "herein," "hereof" and "hereunder" and other words of similar
import refer to this Agreement as a whole and not to any particular Article,
Section or other subdivision.

                                  ARTICLE VIII

                                       35
<PAGE>

                                  MISCELLANEOUS

          Section 8.1 AMENDMENTS; WAIVER. This Agreement may be amended only by
an agreement in writing executed by DoCoMo (on behalf of itself and all of its
Designees), AT&T and AT&T Wireless; provided that, after the Spin-off, this
Agreement may be amended by an agreement in writing executed by AT&T Wireless
and DoCoMo (on behalf of itself and all of its Designees) to the extent (but
only to the extent) such amendment does not affect any rights or obligations of
AT&T. Any party may waive in whole or in part any benefit or right provided to
it under this Agreement, such waiver being effective only if contained in a
writing executed by the waiving party. No failure by any party to insist upon
the strict performance of any covenant, duty, agreement or condition of this
Agreement or to exercise any right or remedy consequent upon breach thereof
shall constitute a waiver of any such breach or of any other covenant, duty,
agreement or condition, nor shall any delay or omission of any party to exercise
any right hereunder in any manner impair the exercise of any such right accruing
to it thereafter.

          Section 8.2 ASSIGNMENT. Except as otherwise provided in this Section
8.2, neither this Agreement nor any of the rights, interests or obligations
hereunder shall be assigned by any of the parties hereto, in whole or in part
(whether by operation of law or otherwise), without the prior written consent of
each of the other parties PROVIDED, HOWEVER, that prior to the Closing, by
giving three (3) Business Days' prior written notice to the other parties,
DoCoMo may assign its rights to purchase the shares of New Tracking Stock and to
receive Warrants in each case pursuant to Section 1.1 hereof without the prior
written consent of the other parties hereto to one or more wholly-owned
Subsidiaries of DoCoMo that has agreed with AT&T and AT&T Wireless to be bound
by the terms hereof and of the Investor Agreement as if such Subsidiary or
Subsidiaries were itself or themselves DoCoMo (each, a "Designee"); PROVIDED
FURTHER, HOWEVER, that following the Closing DoCoMo may assign any of its
on-going rights hereunder to any "Designee" as that term is used in the Investor
Agreement that has executed and is a party to the Investor Agreement; and
PROVIDED FURTHER, HOWEVER, that no assignment shall limit or affect the
assignor's obligations hereunder, and that DoCoMo shall cause each Designee to
execute the Investor Agreement at or prior to Closing and each "Designee" as
that term is used in the Investor Agreement to execute the Investor Agreement at
or prior to the time that such entity becomes a "Designee" as such term is used
in the Investor Agreement. Subject to the preceding sentence, this Agreement
will be binding upon, inure to the benefit of and be enforceable by the parties
and their respective successors and assigns. Any attempted assignment in
violation of this Section 8.2 shall be void.

          Section 8.3 NOTICES. Except as otherwise provided in this Agreement,
all notices, requests, claims, demands, waivers and other communications
hereunder shall be in writing and shall be deemed given when so delivered by
hand, or if mailed, five (5)

                                       36
<PAGE>

Business Days after mailing (three (3) Business Days in the case of express mail
or overnight courier service), or when received by facsimile transmission if
promptly confirmed, as follows:

                  If to AT&T:

                  AT&T Corp.
                  295 North Maple Avenue
                  Bashing Ridge, New Jersey  07920
                  Attention: Marilyn J. Wasser,
                                 Secretary and Vice President - Law
                  Telefax:    (908) 221-6618

                  With a copy to:

                  Wachtell, Lipton, Rosen & Katz
                  51 West 52nd Street
                  New York, NY  10019
                  Attention:   Steven A. Rosenblum
                               David M. Silk
                  Telefax: (212) 403-2000

                  To AT&T Wireless:

                  7277 164th Avenue, NE
                  Redmond, Washington  98051
                  Attention:   Greg Landis
                               General Counsel
                  Telefax:     (425) 580-8050

                  With a copy to:
                  Wachtell, Lipton, Rosen & Katz
                  51 West 52nd Street
                  New York, NY  10019
                  Attention:   Steven A. Rosenblum
                               David M. Silk
                  Telefax: (212) 403-2000

                                       37

<PAGE>

                  To DoCoMo or any Designee:

                  NTT DoCoMo, Inc.
                  Sanno Park Tower - 41st Floor
                  11-1, Nagata-cho 2-chome
                  Chiyoda-ku
                  Tokyo 100-6150
                  Attention:  Global Business Department,
                               Kiyoyuki Tsujimura,
                               Managing Director
                  Telefax:  81-3-5156-0204

                  With a copy to:

                  Sullivan & Cromwell
                  1888 Century Park East
                  Los Angeles, CA  90067
                  Attention:  Alison S. Ressler
                  Telefax:  (310) 712-8800

or to such other address or facsimile number as such other party may, from time
to time, designate in a written notice given in a like manner.

          Section 8.4 SEVERABILITY. If any term or provision of this Agreement
or any application thereof shall be declared or held invalid, illegal or
unenforceable, in whole or in part, whether generally or in any particular
jurisdiction, such provision shall be deemed amended to the extent, but only to
the extent, necessary to cure such invalidity, illegality or unenforceability,
and the validity, legality and enforceability of the remaining provisions, both
generally and in every other jurisdiction, shall not in any way be affected or
impaired thereby.

          Section 8.5 COUNTERPARTS. This Agreement may be executed by the
parties hereto in two or more counterparts, each of which shall be deemed an
original, but all of which together shall constitute one and the same
instrument.

          Section 8.6 GOVERNING LAW. This Agreement shall be governed by and
construed and enforced in accordance with the laws of the State of New York
applicable to contracts executed in and to be performed entirely within such
State, without giving effect to the conflicts of law principles thereof that
would govern, construe or enforce the Agreement under laws other than the laws
of the State of New York.

                                       38
<PAGE>

          Section 8.7 ENTIRE AGREEMENT. This Agreement, the Related Agreements
and the schedules and exhibits attached to any such documents constitute the
entire agreement among DoCoMo, each Designee, AT&T and AT&T Wireless with
respect to the subject matter hereof. This Agreement and the Related Agreements
supersede all prior agreements with respect to the subject matter hereof, and
supersede the Letter Agreement in its entirety.

          Section 8.8 PUBLICITY. AT&T, AT&T Wireless and DoCoMo agree that the
initial press releases announcing the Investment and the other transactions
contemplated hereby shall be jointly coordinated and agreed. Thereafter, until
the fifteenth (15th) day following the Closing Date, DoCoMo and AT&T agree to
consult with each other before issuing any press release or making any public
statement with respect to the agreements and transactions contemplated by this
Agreement and, subject to the immediately following sentence, will not issue any
such press release or make any such public statement without the prior consent
of the other party, which consent shall not be unreasonably withheld or delayed.
Notwithstanding the foregoing, any such press release or public statement as may
be required by applicable law or any listing agreement with any applicable
securities exchange may be issued without such consent, if the party making such
release or statement has used its reasonable efforts to consult with the other
party.

          Section 8.9 EXPENSES. Subject to Article VI, AT&T and AT&T Wireless,
on the one hand, and DoCoMo and all of its Designees, on the other, each shall
pay their own expenses incident to the negotiation, preparation and performance
of this Agreement and the transactions contemplated hereby, including but not
limited to the fees, expenses and disbursements of their respective investment
bankers, accountants and counsel.

          Section 8.10 NO THIRD PARTY BENEFICIARIES. Nothing in this Agreement,
expressed or implied, is intended to confer upon any person, other than the
parties hereto or their respective successors (including, without limitation,
each Designee and each "Designee" as that term is used in the Investor Agreement
and that has executed and is a party to the Investor Agreement), any rights,
remedies, obligations or liabilities under or by reason of this Agreement.

          Section 8.11 ARBITRATION. The parties (including each Designee)
encourage the prompt and equitable settlement of all controversies or claims
between or among the parties arising out of or relating to this Agreement, the
Investor Agreement and the Warrant Agreement including any claim based on or
arising from an alleged tort, and agree as follows:

                                       39
<PAGE>

          (i) Any controversy or claim arising out of or relating to the
     above-referenced Agreements ("Arbitration Claims"), including Arbitration
     Claims arising under Article VI, shall be determined by arbitration in
     accordance with the International Arbitration Rules of the American
     Arbitration Association or any successor organization thereof and Title 9
     of the U.S. Arbitration Act in New York, New York.

          (ii) Within fifteen (15) days after the delivery in accordance with
     Section 8.3 hereof by any party to the other (treating AT&T and AT&T
     Wireless as one party and treating DoCoMo and all of its Designees as one
     party) of written notice of the commencement of arbitration, each party
     shall select one person to act as an arbitrator; and the two selected shall
     select a third arbitrator within fifteen (15) days of the second
     arbitrator's appointment. If the arbitrators selected by the parties are
     unable or fail to agree upon the third arbitrator, the third arbitrator
     shall be selected by the American Arbitration Association pursuant to its
     rules. Arbitration proceedings shall be conducted in the English language.

          (iii) The parties shall agree upon what, if any, discovery shall be
     permitted. If the parties do not agree on the extent and form of discovery
     within ten (10) days after the appointment of the third arbitrator, then
     there shall be neither discovery nor the issuance of subpoenas except as
     otherwise expressly directed in accordance with the unanimous determination
     of the arbitrators.

          (iv) The powers of the arbitrators to fashion remedies hereunder shall
     be no broader than the powers to award legal and equitable remedies
     available to a court, unless the parties expressly state elsewhere in the
     relevant above-referenced Agreements that the arbitrators may order broader
     or narrower legal and equitable remedies. The arbitrators shall not have
     the power to award any punitive damages, and each party expressly waives
     any claim thereto. This Section 8.11 shall govern if any conflict arises
     between this Section and any other remedy terms in the above-referenced
     Agreements.

          (v) The arbitrators shall make their award within thirty (30) days
     after the conclusion of arbitration hearings. Subject to paragraph (vi) of
     this Section 8.11, the award shall be final and binding, and judgment
     therein may be entered by any court having jurisdiction thereof.

                                       40
<PAGE>

          (vi) Within thirty (30) days after receipt of any award (which shall
     not be binding if an appeal is taken hereunder), any party (treating AT&T
     and AT&T Wireless as one party and treating DoCoMo and all of its Designees
     as one party) may notify the American Arbitration Association of its intent
     to appeal to a second three-arbitrator tribunal, selected in the same
     fashion as the initial tribunal (with the 15-day arbitrator selection
     period commencing on the first Business Day after such notification is
     received by the other party). At least two of the three appellate
     arbitrators shall be former judges of state or federal courts. The appeal
     tribunal shall be entitled to adopt the initial award as its own, modify
     the initial award or substitute its own award for the initial award. The
     appeal tribunal shall not modify or replace the initial award except for
     errors of law or because of clear and convincing factual errors. If an
     appeal is taken, the award of the appeal tribunal shall be final and
     binding, and judgment may be entered therein by any court having
     jurisdiction thereof. The review by the appeal tribunal will be completed
     and its order issued within thirty (30) days of the final submission of the
     parties to the panel.

          (vii) The parties (treating AT&T and AT&T Wireless as one party and
     treating DoCoMo and all of its Designees as one Party) shall equally bear
     the costs and fees of the arbitration, including court reporter expenses,
     and each party shall bear its own legal expenses.

          (viii) The parties waive recourse to any court, including all courts
     in the United States and Japan, except for enforcement of this Section 8.11
     or for enforcement of any arbitral award hereunder.

          (ix) The duty of the parties to arbitrate any Arbitration Claim within
     the scope of this Section 8.11 shall survive the expiration or termination
     of this Agreement for any reason.

          Section 8.12 SUBMISSION TO JURISDICTION; WAIVERS. Subject to the
provisions of Section 8.11, each of the parties (including each Designee) hereto
irrevocably agrees that any legal action or proceeding with respect to this
Agreement or the transactions contemplated hereby or for recognition and
enforcement of any judgment in respect hereof or thereof, other than with
respect to any dispute subject to arbitration under Section 8.11 (but including
for enforcement of the arbitration provisions contained in Section 8.11 or any
award resulting therefrom) brought by any other party hereto or its successors
or assigns shall be brought and determined only in the United States District
Court for the Southern District of New York, or in the event (but only in the
event) that such court does not have subject matter jurisdiction over such
action or proceeding, only

                                       41
<PAGE>

in the courts of the State of New York. Each of the parties (including each
Designee) hereto hereby irrevocably submits with regard to any such action or
proceeding for itself and in respect of its property, generally and
unconditionally, to the personal jurisdiction of the aforesaid courts. Each of
the parties hereto hereby irrevocably waives, and agrees not to assert, by way
of motion, as a defense, counterclaim or otherwise, in any action or proceeding
with respect to this Agreement, or the transactions contemplated hereby (a) any
claim that it is not personally subject to the jurisdiction of the above-named
courts for any reason other than the failure to serve in accordance with Section
8.3, (b) that it or its property is exempt or immune from jurisdiction of any
such court or from any legal process commenced in such courts (whether through
service of notice, attachment prior to judgment, attachment in aid of execution
of judgment, execution of judgment or otherwise) and (c) to the fullest extent
permitted by the applicable law, that (i) the suit, action or proceeding in such
court is brought in an inconvenient forum, (ii) the venue of such suit, action
or proceeding is improper and (iii) this Agreement or the subject mater hereof,
may not be enforced in or by such courts.

          Section 8.13 WAIVER OF IMMUNITY. DoCoMo agrees that, to the extent
that it or any of its Subsidiaries or any of its property or the property of its
Subsidiaries is or becomes entitled to any immunity on the grounds of
sovereignty or otherwise based upon its status as an agency or instrumentality
of a government from any legal action, suit or proceeding or from set-off or
counterclaim relating to this Agreement from the jurisdiction of any competent
court or arbitrator, from service of process, from attachment prior to judgment,
from attachment in aid of execution, from execution pursuant to a judgment or an
arbitral award or from any other legal or arbitral process in any jurisdiction,
it, for itself and its property, and for each of its Subsidiaries and its
property, expressly, irrevocably and unconditionally waives, and agrees not to
plead or claim, any such immunity with respect to matters arising with respect
to this Agreement or the subject matter hereof (including any obligation for the
payment of money). DoCoMo agrees that the foregoing waiver is irrevocable and is
not subject to withdrawal in any jurisdiction or under any statute, including
the Foreign Sovereign Immunities Act, 28 U.S.C. ss. 1602 et seq. The foregoing
waiver shall constitute a present waiver of immunity at any time any action is
initiated against DoCoMo with respect to this Agreement or the subject matter
hereof (including any obligation for the payment of money).

          Section 8.14 WAIVER OF JURY TRIAL. AT&T, AT&T Wireless and DoCoMo
hereby waive any right they may have to a trial by jury in respect of any
action, proceeding or litigation directly or indirectly arising out of, under or
in connection with this Agreement or the transactions contemplated hereby.

          Section 8.15 TERMINATION OF CERTAIN OBLIGATIONS. Effective immediately
on consummation of the Spin-off (i) except with respect to its liabilities and
obligations

                                       42
<PAGE>

pursuant to Sections 6.1(a) and 6.1(c) (but subject to the limitations
applicable to such Sections), and except with respect to liabilities arising
from any breach of this Agreement prior to the consummation of the Spin-off,
AT&T shall be released and terminated as a party hereto and shall have no
further liability or obligation hereunder to any party hereto or any other
Person hereby, and this Agreement shall no longer represent an agreement of AT&T
enforceable against AT&T by any other Person and (ii) except with respect to its
liabilities and obligations pursuant to Section 6.2 (but subject to the
limitations applicable to Section 6.2) and except with respect to liabilities
arising from any breach of this Agreement prior to the consummation of the
Spin-off, DoCoMo shall be released and have no further liability or obligation
hereunder to AT&T, and this Agreement shall no longer represent an agreement
enforceable by AT&T against DoCoMo or any Designee or successor thereof.

                                       43
<PAGE>

          IN WITNESS WHEREOF, this Agreement has been executed and delivered as
of the date first above written, by the duly authorized representatives of the
parties hereto.

                                AT&T  CORP.

                                By: /s/ C. Michael Armstrong
                                   -------------------------------
                                   Name:   C. Michael Armstrong
                                   Title:  Chairman and Chief Executive Officer


                                NTT DOCOMO, INC.


                                By: /s/ Keiji Tachikawa
                                   -------------------------------
                                   Name:   Keiji Tachikawa
                                   Title:  President and Chief Executive Officer


                                AT&T WIRELESS SERVICES, INC.


                                By: /s/ John D. Zeglis
                                  -------------------------------
                                  Name:   John D. Zeglis
                                  Title:  Chief Executive Officer



                                       44


<PAGE>



                                   EXHIBIT A
                                   ---------


                        FORM OF CERTIFICATE OF AMENDMENT

                                     OF THE

                          CERTIFICATE OF INCORPORATION

                                       OF

                                   AT&T CORP.

                UNDER SECTION 805 OF THE BUSINESS CORPORATION LAW

          Pursuant to the provisions of Section 805 of the BUSINESS CORPORATION
LAW, the undersigned, being the Senior Vice President and Secretary of AT&T
CORP., a New York corporation (the "corporation"), hereby certify that:

                                       I.

          The name of the corporation is AT&T Corp.

                                       II.

          The Certificate of Incorporation of the corporation was filed by the
Department of State on March 3, 1885 under the name American Telephone and
Telegraph Company.

          A Certificate of Amendment of the Certificate of Incorporation was
filed in the office of the Secretary of State of the State of New York on April
20, 1994, changing the name of the corporation to AT&T Corp.

                                      III.

          The Certificate of Incorporation of the corporation is hereby amended
pursuant to authority vested in the Board of Directors by the Certificate of
Incorporation of the corporation, as heretofore amended, and in accordance with
Section 502 of the Business Corporation Law, by the addition of the following
provision, stating the number, designation, relative rights, preferences and
limitations of a series of the corporation's authorized preferred stock
designated as Wireless Group Preferred Tracking Stock.


          1. NUMBER AND DESIGNATION. 1,500,000 shares of the Preferred Stock of
the corporation shall constitute a series designated as "Wireless Group
Preferred Tracking Stock" (the "New Tracking Stock").


<PAGE>

          2. DEFINITIONS. Unless the context otherwise requires, when used in
this Amendment the following terms shall have the meaning indicated.

          "Accrual Period" means, with respect to any calculation of the Cost of
Carry with respect to any shares of New Tracking Stock, the number of days from
the date of initial issuance of such shares of New Tracking Stock to but not
including the Redemption Date.

          "Amendment" means this Certificate of Amendment of the
Certificate.

          "AT&T Wireless" means AT&T Wireless Services, Inc., a Delaware
corporation and a wholly-owned subsidiary of the corporation.

          "AT&T Wireless Common Stock" means the common stock, par value $0.01
per share, of AT&T Wireless as of and following the Spin-off.

          "Board of Directors" means the Board of Directors of the corporation.

          "Certificate" means the corporation's Restated Certificate of
Incorporation as filed by the Department of State on January 10, 1989, as
amended.

          "Class A Liberty Media Group Common Stock" means the Class A Liberty
Media Group Common Stock, par value $1.00 per share, of the corporation.

          "Class B Liberty Media Group Common Stock" means the Class B Liberty
Media Group Common Stock, par value $1.00 per share, of the corporation.

          "Common Stock" means the Common Stock, par value $1.00 per share, of
the corporation.

          "Common Stock Group(W)" shall have the meaning set forth in Article
Third, Part C, paragraph 9 of the Certificate as in effect on the date of this
Amendment.

          "corporation" shall have the meaning set forth in the preamble to this
Amendment.

          "Cost of Carry" shall mean the applicable interest rate set forth on
the table below for the following time periods (expressed in days, based on a
360-day year of twelve 30-day months, except for periods of twelve (12) months
or less which will be


                                      -2-
<PAGE>

expressed in actual days of 365 based on a 360-day year according to the money
market convention).

ACCRUAL PERIOD                                         COST OF CARRY
--------------                                         -------------
90 days or less                                        6.477%
180 days                                               6.348%
360 days                                               6.336%
540 days                                               6.563%
720 days                                               6.475%
1,080 days                                             6.499%
1,440 days                                             6.673%
1,800 days                                             6.647%
2,160 days                                             6.758%
2,520 days or more                                     6.819%

     The interest rate that will apply to any Accrual Period between any two
points in the foregoing table will be an interpolated rate, which interpolated
rate will apply to the entire Accrual Period. As an example only: using the rate
6.475% for 720 days and the rate 6.499% for 1,080 days, then (i) the rate for
900 days (half way between the two points) would be 6.487% (half way between the
two rates); (ii) the rate for 810 days (one quarter of the way between the two
points) would be 6.481% (one quarter of the way between the two rates); and
(iii) the rate for 990 days (three quarters of the way between the two points)
would be 6.493% (three quarters of the way between the two rates). The
applicable interest rate will be compounded over the applicable Accrual Period
based on a semi-annual bond equivalent yield using a 360-day year of twelve
30-day months, except for periods of 12 months or less which will be expressed
in actual days of 365 based on a 360-day year according to the money market
convention.

          "Draft Separation Agreements" means the drafts of the agreements
(and/or term sheets with respect to such agreements) relating to the Spin-off
and the separation of the Wireless Group from the corporation and the schedules
related thereto, in the forms annexed to the Letter Agreement.

          "Exchange Act" means the Securities Exchange Act of 1934, as amended,
or any successor statute, and the rules and regulations promulgated thereunder.

          "Investor Agreement" means the Investor Agreement, dated as of
December 20, 2000, by and among the corporation, AT&T Wireless and NTT DoCoMo,
Inc.

                                      -3-
<PAGE>

          "Letter Agreement" means the Letter Agreement, dated as of November
30, 2000, by and among the corporation, AT&T Wireless and NTT DoCoMo, Inc.,
together with the term sheet attached thereto and the annexes to such term
sheet.

          "Liberty Media Group Common Stock" means, collectively, the Class A
Liberty Media Group Common Stock and the Class B Liberty Media Group Common
Stock.

          "Liquidation Junior Securities" means the Common Stock, the Wireless
Group Common Stock, the Class A Liberty Media Group Common Stock, the Class B
Liberty Media Group Common Stock and each other class of capital stock of the
corporation currently existing or created after the date of this Amendment the
terms of which do not expressly provide that it ranks senior to, or on a parity
with, the New Tracking Stock as to distribution upon involuntary liquidation,
winding-up or dissolution.

          "Liquidation Parity Securities" means each other class of capital
stock of the corporation created after the date of this Amendment the terms of
which expressly provide that such class will rank PARI PASSU to the New Tracking
Stock as to distribution upon involuntary liquidation, winding-up or dissolution
of the corporation.

          "Liquidation Senior Securities" means each other class of capital
stock of the corporation created after the date of this Amendment the terms of
which expressly provide that such class will rank senior to the New Tracking
Stock as to distribution upon involuntary liquidation, winding-up or dissolution
of the corporation.

          "Market Value" shall have the meaning set forth in Article Third, Part
C, paragraph 9 of the Certificate as in effect on the date of this Amendment;
provided that the proviso thereto applicable to shares of Common Stock, Wireless
Group Common Stock and any class of Liberty Media Group Common Stock shall also
be applicable to shares of New Tracking Stock.

          "New Tracking Stock" shall have the meaning set forth in paragraph 1
of this Amendment.

          "New Tracking Stock Tax Event" means receipt by the corporation of an
opinion of tax counsel of the corporation's choice, to the effect that, as a
result of any amendment to, clarification of, or change (including a prospective
change) in, the laws (or any interpretation or application of the laws) of the
United States or any political subdivision or taxing authority thereof or
therein (including enactment of any legislation and the publication of any
judicial or regulatory decision, determination or pronouncement) which
amendment, clarification or change is effective, announced,


                                      -4-
<PAGE>

released, promulgated or issued on or after the date of initial issuance of the
New Tracking Stock, regardless of whether such amendment, clarification or
change is issued to or in connection with a proceeding involving the
corporation, the Common Stock Group(W) or the Wireless Group and whether or not
subject to appeal, there is more than an insubstantial risk that:

          (i) for tax purposes, any issuance of New Tracking Stock would be
     treated as a sale or other taxable disposition by the corporation or any of
     its Subsidiaries of any of the assets, operations or relevant subsidiaries
     to which the New Tracking Stock relates,

          (ii) the existence of the New Tracking Stock would subject the
     corporation, its Subsidiaries or affiliates, or any of their respective
     successors or shareholders to the imposition of tax or to other adverse tax
     consequences, or

          (iii) for tax purposes, either Common Stock or New Tracking Stock is
     not or, at any time in the future, will not be treated solely as capital
     stock of the corporation.

          "Person" shall mean any individual, corporation, partnership, limited
liability company, joint venture, association, joint stock company, trust,
unincorporated organization, government or agency or political subdivision
thereof, or other entity, whether acting in an individual, fiduciary or other
capacity.

          "Preferred Stock" means the preferred stock, par value $1.00 per
share, of the corporation.

          "Redemption Date" shall have the meaning set forth in paragraph 5(c).

          "Securities Purchase Agreement" means the Securities Purchase
Agreement, dated as of December 20, 2000, by and among the corporation, AT&T
Wireless and NTT DoCoMo, Inc..

          "Spin-off" shall mean the spin-off of AT&T Wireless in accordance with
the Draft Separation Agreements, as amended or revised to the extent not
prohibited by the Investor Agreement.

          "Subsidiary" means, with respect to any Person, any corporation,
limited liability company or partnership 50% or more of whose outstanding voting
securities or membership or partnership interests, as the case may be, are,
directly or indirectly, owned by such Person.


                                      -5-
<PAGE>

          "Tax Event" shall have the meaning set forth in Article Third, Part C,
paragraph 9 of the Certificate as in effect on the date of this Amendment.

          "Wireless Group" shall have the meaning set forth in Article Third,
Part C, paragraph 9 of the Certificate as in effect on the date of this
Amendment.

          "Wireless Group Common Stock" means the Wireless Group Common Stock,
par value $1.00 per share, of the corporation.

          3. VOTING RIGHTS.

          (a) Holders of New Tracking Stock shall be entitled to two hundred and
fifty (250) votes per share of New Tracking Stock, subject to adjustment as set
forth in paragraph 3(b) below. Except as may otherwise be required in this
Amendment or in the Certificate (including the terms of any class of series of
Preferred Stock and any resolution or resolutions providing for the
establishment of such class or series pursuant to authority vested in the Board
of Directors by the Certificate) or by the laws of the State of New York, the
holders of shares of Common Stock, the holders of shares of New Tracking Stock,
the holders of shares of Wireless Group Common Stock, the holders of shares of
Class A Liberty Media Group Common Stock, the holders of shares of Class B
Liberty Media Group Common Stock, the holders of shares of each other class of
common shares, if any, entitled to vote thereon, and the holders of shares of
each other class or series of Preferred Stock, if any, entitled to vote thereon,
shall vote as one class with respect to all matters to be voted on by
shareholders of the corporation, and no separate vote or consent of the holders
of shares of Common Stock, the holders of shares of New Tracking Stock, the
holders of shares of Wireless Group Common Stock, the holders of shares of Class
A Liberty Media Group Common Stock, the holders of shares of Class B Liberty
Media Group Common Stock or the holders of shares of any such class of common
shares or any such class or series of Preferred Stock shall be required for the
approval of any such matter.

          (b) If the corporation shall in any manner subdivide (by stock split
or otherwise) or combine (by reverse stock split or otherwise) the outstanding
shares of Common Stock, Liberty Media Group Common Stock or Wireless Group
Common Stock, or pay a stock dividend in shares of any class to holders of that
class or shall otherwise effect a share distribution (as defined in Article
Third, Part C, paragraph 3 of the Certificate) of Common Stock, New Tracking
Stock, Wireless Group Common Stock or Liberty Media Group Common Stock, the per
share voting rights of the New Tracking Stock shall be appropriately adjusted so
as to avoid any dilution in the aggregate voting rights of any one class
relative to the other classes.

                                      -6-
<PAGE>


          4. DIVIDENDS; SHARE DISTRIBUTIONS.

          (a) The holders of the New Tracking Stock shall be entitled to receive
dividends when, as and if declared by the Board of Directors out of funds of the
corporation legally available thereof. So long as any share of New Tracking
Stock remains outstanding, no dividend shall be paid or declared and no
distribution shall be made on any share of Wireless Group Common Stock, unless
dividends shall have first been (or simultaneously shall be) paid to or declared
and set aside for payment on all outstanding shares of New Tracking Stock in an
aggregate amount equal to the product of (i) the per share dividends declared
and to be paid on the Wireless Group Common Stock and (ii) the number of shares
of Wireless Group Common Stock into which all outstanding shares of New Tracking
Stock are convertible immediately prior to the record date of such dividend. So
long as any share of New Tracking Stock remains outstanding, no share
distribution shall be paid or declared and no share distribution shall be made
on any share of Wireless Group Common Stock, unless a share distribution shall
have first have been (or simultaneously shall be) paid to or declared and set
aside for payment on all outstanding shares of New Tracking Stock in an
aggregate amount equal to the product of (i) the per share amount declared and
to be paid on the Wireless Group Common Stock and (ii) the number of shares of
Wireless Group Common Stock into which the New Tracking Stock is convertible
immediately prior to the record date of such share distribution.

          (b) Concurrently with the payment of any dividend on shares of New
Tracking Stock at any time when there are no shares of Wireless Group Common
Stock outstanding, at the election of the Board of Directors, either (x) the
Common Stock Group(W) shall receive from the Wireless Group an aggregate payment
of the same kind of cash and/or property that is the subject of such dividend,
which payment shall be equal to the excess, if any, of (i) the quotient obtained
by dividing (A) the aggregate amount of such dividend, as determined by the
Board of Directors, by (B) the Wireless Group Allocation Fraction, over (ii) the
aggregate amount of such dividend, as so determined, or (y) the Wireless Group
Allocation Fraction will be adjusted as described in paragraph 8 of Article
Third, Part C of the Certificate. Any payment to be made to the Common Stock
Group(W) pursuant to the preceding sentence may, at the discretion of the Board
of Directors, be reflected by an allocation or by a direct transfer of cash or
other property.

          (c) Concurrently with the making of any share distribution with
respect to the New Tracking Stock at any time when there are no shares of
Wireless Group Common Stock outstanding, at the election of the Board of
Directors, either (x) the Common Stock Group(W) shall receive from the Wireless
Group an aggregate payment of the same kind of property that is the subject of
such distribution, which


                                      -7-
<PAGE>

payment shall be equal to the excess, if any, of (i) the quotient obtained by
dividing (A) the aggregate amount of such distribution, as determined by the
Board of Directors, by (B) the Wireless Group Allocation Fraction, over (ii) the
aggregate amount of such dividend, as so determined, or (y) the Wireless Group
Allocation Fraction shall be adjusted as described in paragraph 8 of Article
Third, Part C of the Certificate. Any payment to be made to the Common Stock
Group(W) pursuant to the preceding sentence may, at the discretion of the Board
of Directors, be reflected by an allocation or by a direct transfer of cash or
other property.

          5. REDEMPTION OF NEW TRACKING STOCK.

          (a) The corporation shall have the right to redeem all (but not less
than all) outstanding shares of New Tracking Stock if (i) there has occurred a
Tax Event prior to the Spin-off in which the adverse tax consequences with
respect to the Wireless Group Common Stock giving rise to such Tax Event also
give rise to a New Tracking Stock Tax Event and (ii) the corporation previously
or simultaneously redeems all outstanding shares of Wireless Group Common Stock
in accordance with the terms of the Certificate. In such event, the redemption
price per share of New Tracking Stock payable by the corporation upon such
redemption shall be equal to the sum of (w) $11,750, (x) interest on $11,750 at
a rate equal to the applicable Cost of Carry from the date of initial issuance
of such share of New Tracking Stock to but not including the Redemption Date,
(y) additional interest on $11,750 at a rate of 3% per annum from the date of
initial issuance of such share of New Tracking Stock to but not including the
Redemption Date and (z) all declared but unpaid dividends thereon from the date
of initial issuance of such share of New Tracking Stock to but not including the
Redemption Date.

          (b) The corporation shall have the right to redeem all (but not less
than all) outstanding shares of New Tracking Stock if (i) the corporation has
failed to effect the Spin-off on or prior to April 26, 2002, (ii) the
corporation delivers an officer's certificate to the holders of the New Tracking
Stock to the effect that the Board of Directors has determined to abandon the
Spin-off and the corporation has no intention at the time of such redemption of
the New Tracking Stock to sell or otherwise dispose of the Wireless Group and
(iii) the corporation concurrently redeems all outstanding shares of the
Wireless Group Common Stock. In such event, the redemption price per share of
New Tracking Stock payable by the corporation upon such redemption shall be
equal to the sum of (w) $11,750, (x) interest on $11,750 at a rate equal to the
applicable Cost of Carry from the date of initial issuance of such share of New
Tracking Stock to but not including the Redemption Date, (y) additional interest
on $11,750 at a rate of 3% per annum from the date of initial issuance of such
share of New Tracking Stock to but not including the Redemption Date and (z) all
declared but unpaid dividends thereon from the


                                      -8-
<PAGE>

date of initial issuance of such share of New Tracking Stock to but not
including the Redemption Date.

          (c) At such time or times as the corporation exercises its right to
cause a redemption pursuant to this paragraph 5, the corporation shall give
notice of such redemption to all holders of New Tracking Stock by mailing by
first-class mail a notice of such redemption (a "Redemption Notice"), not less
than thirty (30) nor more than sixty (60) days prior to the date fixed for such
redemption (the "Redemption Date"), to their last addresses as they appear upon
the corporation's books and by simultaneously faxing such notice to such holders
to the fax numbers for such holders as they appear upon the corporation's
records. Each such Redemption Notice shall specify the Redemption Date and the
per share redemption price applicable to such redemption, and shall state that
the redemption price shall be paid upon surrender of the certificates
representing such shares of New Tracking Stock.

          (d) Before any holder of shares of New Tracking Stock shall be
entitled to receive the redemption price with respect to its shares of New
Tracking Stock, such holder must surrender, at such office as the corporation
shall specify, the certificates for such shares of New Tracking Stock duly
endorsed to the corporation or in blank or accompanied by proper instruments of
transfer to the corporation or in blank, unless the corporation shall waive such
requirement. The corporation shall, as soon as practicable after such surrender
of certificates representing such shares of New Tracking Stock, pay to the
holder for whose account such shares of New Tracking Stock were so surrendered,
or to such holder's nominee or nominees, the redemption price specified by
paragraph 5(a) or paragraph 5(b), as applicable.

          (e) No adjustments in respect of dividends shall be made upon the
redemption of any shares of New Tracking Stock; provided, however, that, if the
Redemption Date with respect to New Tracking Stock shall be subsequent to the
record date for the payment of a dividend or other distribution thereon or with
respect thereto but prior to the payment or distribution thereof, the registered
holders of such shares at the close of business on such record date shall be
entitled to receive the dividend or other distribution payable on such shares on
the date set for payment of such dividend or other distribution, notwithstanding
the redemption of such shares or the corporation's default in payment of the
dividend or distribution due on such date.

          (f) From and after any Redemption Date, all rights of a holder of
shares of New Tracking Stock shall cease except for the right, upon surrender of
the certificates representing such shares of New Tracking Stock, to receive the
redemption price with respect thereto.


                                      -9-
<PAGE>

          (g) If any redemption price to be paid pursuant to this paragraph 5 is
to be paid to a Person other than that in which the certificate representing
shares of New Tracking Stock are surrendered in exchange therefor is registered,
it shall be a condition to the making of such payment that the Person requesting
such payment pays any transfer or other taxes required by reason of the payment
for such shares being made to a person other than the record holder of the
certificate surrendered, or establishes, to the satisfaction of the corporation
or its agent, that such tax has been paid or is not applicable.

          6. LIQUIDATION.

          (a) In the event of any involuntary liquidation, winding-up or
dissolution of the corporation (an "Involuntary Liquidation"), after payment or
provision for payment of the debts and other liabilities of the corporation and
subject to the prior payment in full of the preferential amounts to which any
class or series of Liquidation Senior Securities is entitled, the holders of
shares of New Tracking Stock shall be entitled to receive for each share of New
Tracking Stock, before any payment or distribution of the assets of the
corporation (whether capital or surplus) shall be made to or set apart for the
holders of Liquidation Junior Securities, an aggregate amount in cash equal to
$3.65 billion. Such amount shall be distributed ratably among the shares of New
Tracking Stock outstanding immediately prior to such Involuntary Liquidation.
If, upon any such Involuntary Liquidation, the assets of the corporation, or
proceeds thereof, shall be insufficient to pay in full the amount set forth in
the preceding sentence and all other preferential liquidation payments with
respect to Liquidation Parity Securities, then such assets, or proceeds thereof,
shall be distributed among the shares of New Tracking Stock and all such other
Liquidation Parity Securities ratably in accordance with the respective amounts
that would be payable on such shares of New Tracking Stock and any such other
Liquidation Parity Securities if all amounts payable thereon were paid in full.
After the payment set forth in the first sentence of this paragraph 6(a) shall
have been made in full to the holders of the New Tracking Stock, and subject to
the prior payment in full of the preferential amounts to which any class or
series of Preferred Stock is entitled, the remaining assets of the corporation
available for distribution shall be distributed among the holders of the New
Tracking Stock and the holders of the Common Stock, the holders of the Class A
Liberty Media Group Common Stock, the holders of the Class B Liberty Media Group
Common Stock and the holders of the Wireless Group Common Stock, with each
holder of New Tracking Stock deemed to hold and to have converted such holder's
shares of New Tracking Stock into that number of shares of Wireless Group Common
Stock into which the number of shares of New Tracking Stock held by such holder
as of the date of the Involuntary Liquidation was convertible for all intents
and purposes as if such shares had been converted to Wireless Group Common Stock
as of the date of such Involuntary Liquidation, in each case in accordance with
the liquidation provisions set forth in Article Third, Part C, paragraph 6 of
the Certificate, it being


                                      -10-
<PAGE>

understood that in such event the Market Capitalization of the Wireless Group
Common Stock shall be determined by including in the number of outstanding
shares of Wireless Group Common Stock such shares deemed issued with respect to
such conversion; provided that any amounts payable with respect to a share of
New Tracking Stock pursuant to this sentence shall be reduced by the amount paid
with respect to such share in the first sentence of this paragraph 6(a).
          (b) In the event of any liquidation, winding-up or dissolution of the
corporation other than an Involuntary Liquidation as provided in paragraph 6(a),
effective as of immediately prior to the time of such liquidation, winding-up or
dissolution, without any action on the part of the corporation or any holder of
New Tracking Stock, each share of New Tracking Stock shall be automatically
converted into a number of shares of Wireless Group Common Stock at the then
applicable Conversion Rate, and the certificates representing shares of New
Tracking Stock held by such holder immediately prior to such conversion shall
thereafter, without any surrender of such certificates, represent shares of
Wireless Group Common Stock. After payment or provision for payment of the debts
and liabilities of the corporation and subject to the prior payment in full of
the preferential amounts to which any class or series of Preferred Stock is
entitled, the assets of the corporation available for distribution shall be
distributed among the holders of the Common Stock, the holders of the Class A
Liberty Media Group Common Stock, the holders of the Class B Liberty Media Group
Common Stock and the holders of the Wireless Group Common Stock (including the
Wireless Group Common Stock issued on conversion of the New Tracking Stock as
provided in the immediately preceding sentence), with each holder of New
Tracking Stock (as of immediately prior to such liquidation, winding-up or
dissolution) receiving in the distribution the amount to which such holder is
entitled by virtue of such holder's ownership of shares of Wireless Group Common
Stock into which such New Tracking Stock was converted as contemplated by the
immediately preceding sentence, in each case in accordance with the liquidation
provisions set forth in Article Third, Part C, paragraph 6 of the Certificate.

          (c) Neither the consolidation or merger of the corporation with or
into any other corporation or corporations nor the sale, transfer or lease of
all or substantially all the assets of the corporation itself shall be deemed to
be a voluntary or involuntary liquidation, dissolution or winding-up of the
corporation within the meaning of this paragraph 6. Any transaction or series of
related transactions that results in all of the assets and liabilities included
in the Wireless Group being held by one or more Wireless Group Subsidiaries, and
the distribution of some or all of the shares of such Wireless Group
Subsidiaries (and no other material assets or liabilities) to the holders of the
outstanding Wireless Group Common Stock shall not constitute a voluntary or
involuntary liquidation, dissolution or winding up of the corporation for
purposes of this Amendment but shall be subject to paragraph 4 of Part C of
Article Third of the Certificate and, in the case of the Spin-off, to paragraph
8 of this Amendment. Any


                                      -11-
<PAGE>

transaction or series of related transactions that results in all of the assets
and liabilities included in the Liberty Media Group being held by one or more
Liberty Media Group Subsidiaries (as defined in paragraph 5(a) of Part B of
Article Third of the Certificate), and the distribution of such Liberty Media
Group Subsidiaries (and no other material assets or liabilities) to the holders
of the outstanding Liberty Media Group Common Stock shall not constitute a
voluntary or involuntary liquidation, dissolution or winding up of the
corporation for purposes of this Amendment, but shall be subject to paragraph
5(a) of Part B of Article Third of the Certificate.

          7. CONVERSION.

          (a) Prior to the Spin-off, and subject to the provisions of this
paragraph 7, the New Tracking Stock shall be convertible at the election of the
holders thereof, at any time into fully paid and non-assessable shares of
Wireless Group Common Stock; provided that such conversion is in respect to all
(and not less than all) shares of New Tracking Stock. In the event of such
conversion, each outstanding share of New Tracking Stock shall be convertible
into five hundred (500) shares of Wireless Group Common Stock (the "Conversion
Rate") as of the date of the conversion subject to adjustment from time to time
pursuant to paragraph 7(e).

          (b) (i) In order to exercise the conversion privilege, all holder(s)
of the shares of New Tracking Stock to be converted shall surrender the
certificate(s) representing such shares at the principal executive offices of
the corporation, with a written notice of election to convert completed and
signed. Unless the shares issuable on conversion are to be issued in the same
name as the name in which such shares of New Tracking Stock are registered, each
share surrendered for conversion shall be accompanied by instruments of
transfer, in form satisfactory to the corporation, duly executed by the holder
or the holder's duly authorized attorney, and an amount sufficient to pay any
transfer or similar tax.

          (ii) As promptly as practicable after the surrender by the holder(s)
of all certificates for shares of New Preferred Stock as aforesaid, the
corporation shall issue and shall deliver to such holder(s), or on the holder's
or holders' written order to the holder's or holders' transferee(s), a
certificate or certificates for the whole number of shares of Wireless Group
Common Stock issuable upon the conversion of such shares in accordance with the
provisions of this paragraph 7.

          (iii) Each conversion of shares of New Tracking Stock pursuant to this
paragraph 7 shall be deemed to have been effected immediately prior to the close
of business on the date on which the certificates for shares of New Tracking
Stock shall have been surrendered and such notice received by the corporation as
aforesaid, and the


                                      -12-
<PAGE>

person in whose name or names any certificate or certificates for shares of
Wireless Group Common Stock shall be issuable upon such conversion shall be
deemed to have become the holder of record of the shares of Wireless Group
Common Stock represented thereby at such time on such date and such conversion
shall be into a number of shares of Wireless Group Common Stock in respect of
the shares of New Tracking Stock being converted as determined in accordance
with this paragraph 7 at such time on such date. All shares of Wireless Group
Common Stock delivered upon conversion of the New Tracking Stock will upon
delivery be duly and validly issued and fully paid and non-assessable, free of
all liens and charges created by acts or omissions of the corporation and not
subject to any preemptive rights. Upon the surrender of certificates
representing the shares of New Tracking Stock to be converted, the shares to be
so converted shall no longer be deemed to be outstanding and all rights of a
holder with respect to such shares surrendered for conversion shall immediately
terminate except the right to receive the Wireless Group Common Stock and other
amounts payable pursuant to this paragraph 7.

          (c) (i) The corporation covenants, notwithstanding any prior
redemption or exchange of all outstanding shares of Wireless Group Common Stock,
(y) that for so long as any shares of New Tracking Stock are outstanding or
issuable upon conversion or exchange of other securities outstanding, it will at
all times reserve and keep available, free from preemptive rights, such number
of its authorized but unissued shares of Wireless Group Common Stock as shall be
required for the purpose of effecting conversions of the New Tracking Stock and
(z) that for so long as any shares of New Tracking Stock are outstanding or
issuable upon conversion or exchange of other securities outstanding, the
provisions of Article Third, Part C governing the terms of Wireless Group Common
Stock shall remain fully operable and in effect.

          (ii) Prior to the delivery of any securities which the corporation
shall be obligated to deliver upon conversion of the New Tracking Stock, the
corporation shall comply with all applicable federal and state laws and
regulations which require action to be taken by the corporation.

          (d) The corporation will pay any and all documentary stamp or similar
issue or transfer taxes payable in respect of the issue or delivery of shares of
Wireless Group Common Stock on conversion of the New Tracking Stock pursuant
hereto; provided that the corporation shall not be required to pay any tax which
may be payable in respect of any transfer involved in the issue or delivery of
shares of Wireless Group Common Stock in a name other than that of the holder of
the New Tracking Stock to be converted and no such issue or delivery shall be
made unless and until the person requesting such issue or delivery has paid to
the corporation the amount of any such tax or has established, to the
satisfaction of the corporation, that such tax has been paid.

                                      -13-
<PAGE>


          (e) (i) In case the corporation shall at any time after the date of
initial issuance of the New Tracking Stock (A) declare a dividend or make a
distribution on Wireless Group Common Stock payable in Wireless Group Common
Stock, (B) subdivide or split the outstanding Wireless Group Common Stock, (C)
combine or reclassify the outstanding Wireless Group Common Stock into a smaller
number of shares, (D) issue any shares of its capital stock in a
reclassification of Wireless Group Common Stock (including any such
reclassification in connection with a consolidation or merger in which the
corporation is the continuing corporation), or (E) consolidate with, or merge
with or into, any other person, the Conversion Rate in effect at the time of the
record date for such dividend or distribution or on the effective date of such
subdivision, split, combination, consolidation, merger or reclassification shall
be adjusted so that the conversion of the New Tracking Stock after such time
shall entitle the holder to receive the aggregate number of shares of Wireless
Group Common Stock or other securities of the corporation (or other securities
into which such shares of Wireless Group Common Stock have been converted,
exchanged, combined, consolidated, merged or reclassified pursuant to clause
7(e)(i)(C), 7(e)(i)(D) or 7(e)(i)(E) above) which, if the New Tracking Stock had
been converted immediately prior to such time, such holder would have owned upon
such conversion and been entitled to receive by virtue of such dividend,
distribution, subdivision, split, combination, consolidation, merger or
reclassification. Such adjustment shall be made successively whenever an event
listed above shall occur.

          (ii) In the event that, at any time as a result of the provisions of
this paragraph 7(e), a holder of New Tracking Stock upon subsequent conversion
shall become entitled to receive any shares of capital stock of the corporation
other than Wireless Group Common Stock, the number of such other shares so
receivable upon conversion of New Tracking Stock shall thereafter be subject to
adjustment from time to time in a manner and on terms as nearly equivalent as
practicable to the provisions contained in this Amendment.

          (g) All adjustments pursuant to this paragraph 7 shall be notified to
the holders of the New Tracking Stock and such notice shall be accompanied by a
schedule of computations of the adjustments; such notice shall be simultaneously
faxed to such holders to the fax numbers for such holders as they appear upon
the corporation's records.

          8. EXCHANGE IN CONNECTION WITH SPIN-OFF.

          (a) If any holder of New Tracking Stock shall not have converted such
holder's shares of New Tracking Stock into shares of Wireless Group Common Stock
prior to the record date set by the Board of Directors for the Spin-off,
effective as of immediately prior to the effective time of the Spin-off, without
any action on the part of

                                      -14-
<PAGE>

the corporation, AT&T Wireless or such holder, each share of such holder's New
Tracking Stock shall be automatically converted (and to have been converted as
of such record date) into a number of shares of Wireless Group Common Stock at
the Conversion Rate and each such share of Wireless Group Common Stock into
which the New Tracking Stock has been converted shall be exchanged at the
effective time of the Spin-off for the number of shares of AT&T Wireless Common
Stock issuable with respect to one share of Wireless Group Common Stock pursuant
to the Spin-off. For the avoidance of doubt, the Spin-off shall be effected by
the corporation as a Board Required Exchange (as defined in the Certificate)
pursuant to Article Third, Part C, paragraphs 4 and 5 of the Certificate and, in
that regard, the shares of AT&T Wireless Common Stock to be issued upon
consummation of the Spin-off shall be deemed "Exchange Shares" thereunder.

          (b) No adjustments in respect of dividends shall be made upon the
exchange of any shares of New Tracking Stock; provided, however, that, if the
date of consummation of the Spin-off shall be subsequent to the record date for
the payment of a dividend or other distribution on the New Tracking Stock or
with respect thereto but prior to the payment or distribution thereof, the
registered holders of such shares of New Tracking Stock at the close of business
on such record date shall be entitled to receive the dividend or other
distribution payable on such shares on the date set for payment of such dividend
or other distribution, notwithstanding the conversion and exchange of such
shares or the corporation's default in payment of the dividend or distribution
due on such date.

          (c) The corporation shall give notice of the Spin-off to all holders
of New Tracking Stock, by mailing by first-class mail a notice of such exchange
(an "Exchange Notice"), not less than thirty (30) nor more than sixty (60) days
prior to the date fixed for such exchange (the "Exchange Date") to their last
addresses as they appear upon the corporation's books and by simultaneously
faxing such notice to such holders to the fax numbers for such holders as they
appear upon the corporation's records. Each such Exchange Notice shall specify
the Exchange Date and the Exchange Rate (as defined in the Certificate)
applicable to such exchange, and shall state that issuance of certificates
representing AT&T Wireless Common Stock to be received upon conversion and
exchange of shares of New Tracking Stock shall be upon surrender of certificates
representing such shares of New Tracking Stock.

          (d) Before any holder of shares of New Tracking Stock shall be
entitled to receive certificates representing such shares of AT&T Wireless
Common Stock, such holder must surrender, at such office as the corporation
shall specify, certificates for such shares of New Tracking Stock duly endorsed
to the corporation or in blank or accompanied by proper instruments of transfer
to the corporation or in blank, unless the corporation shall waive such
requirement; no certificates representing the


                                      -15-
<PAGE>

shares of Wireless Group Common Stock into which the New Tracking Stock is
converted immediately prior to the exchange for shares of AT&T Wireless Common
Stock shall be issued and, accordingly, no surrender of such certificates shall
be required in connection with the exchange for shares of AT&T Wireless Common
Stock upon consummation of the Spin-off. The corporation shall, as soon as
practicable after such surrender of certificates representing such shares of New
Tracking Stock, issue and deliver, at the office of the transfer agent
representing shares of AT&T Wireless Common Stock, to the holder for whose
account such shares of New Tracking Stock were so surrendered, or to such
holder's nominee or nominees, certificates representing the number of shares of
AT&T Wireless Common Stock to which such holder shall be entitled.

          (e) From and after the consummation of the Spin-off, all rights of a
holder of shares of New Tracking Stock immediately prior to the conversion and
exchange contemplated by this paragraph 8 shall cease except for the right, upon
surrender of the certificates representing such shares of New Tracking Stock, to
receive certificates representing shares of AT&T Wireless Common Stock and
together with the rights to dividends as described in paragraph 8(c). No holder
of a certificate that immediately prior to the consummation of the Spin-off
represented shares of New Tracking Stock shall be entitled to receive any
dividend or other distribution with respect to shares of AT&T Wireless Common
Stock until surrender of such holder's certificate for a certificate or
certificates representing shares of AT&T Wireless Common Stock. Upon surrender,
the holder shall receive the amount of any dividends or other distributions
(without interest) that were payable with respect to a record date after the
date of consummation of the Spin-off, but that were not paid by reason of the
foregoing with respect to the number of shares of AT&T Wireless Common Stock
represented by the certificate or certificates issued upon such surrender. From
and after the date of consummation of the Spin-off, the corporation shall,
however, be entitled to treat certificates for New Tracking Stock that have not
yet been surrendered for conversion and exchange as evidencing the ownership of
the number of shares of AT&T Wireless Common Stock for which the shares of New
Tracking Stock represented by such certificates have been converted and
exchanged pursuant to this paragraph 8, notwithstanding the failure to surrender
such certificates.

          (f) If any certificate for shares of AT&T Wireless Common Stock is to
be issued in a name other than that in which the certificate representing shares
of New Tracking Stock surrendered in exchange therefor is registered, it shall
be a condition of such issuance that the person requesting the issuance pays any
transfer or other taxes required by reason of the issuance of certificates for
such shares of AT&T Wireless Common Stock in a name other than that of the
record holder of the certificate surrendered, or establishes, to the
satisfaction of the corporation or its agent, that such tax


                                      -16-
<PAGE>

has been paid or is not applicable. Under no circumstances shall the corporation
be liable to a holder of shares of New Tracking Stock for any shares of AT&T
Wireless Common Stock or dividends or distributions thereon delivered to a
public official pursuant to any applicable abandoned property, escheat or
similar law.

          (g) In the event the Spin-off is to be effected by spinning off an
entity other than AT&T Wireless, all references in this Amendment to AT&T
Wireless shall be deemed to refer to such other entity and all references in
this Amendment to AT&T Wireless Common Stock shall be deemed to refer to the
publicly traded common stock of such other entity outstanding as of and
following the Spin-off. For purposes of this paragraph 8, any spin-off meeting
the definition of Spin-off as set forth in paragraph 1 shall be deemed to be the
Spin-off, regardless of when such spin-off is consummated.

                                      -17-
<PAGE>


                                       IV.

          The amendments of the Certificate of Incorporation effected by this
Certificate were authorized by action of the Board of Directors of the
corporation pursuant to Section 502 of the Business Corporation Law.

                                      -18-
<PAGE>


          IN WITNESS WHEREOF, we have made and subscribed this Certificate this
__ day of ______, ___.


                                     By:  _________________________
                                          Name:
                                          Title:

                                     By:  _________________________
                                          Name:
                                          Title:

[Corporate Seal]



                                      -19-




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