AERIAL COMMUNICATIONS INC
10-Q, 1999-08-13
RADIOTELEPHONE COMMUNICATIONS
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                ----------------
                                    FORM 10-Q

                QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934


 X      QUARTERLY REPORT  PURSUANT TO  SECTION 13 OR 15(d) OF THE
        SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended                     June 30, 1999
                               -----------------------------------------------
                                                        OR
        TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
        SECURITIES EXCHANGE ACT OF 1934
For the transition period from                      to
                              ---------------------    ------------------------
                         Commission File Number 0-28262

- -------------------------------------------------------------------------------


                           AERIAL COMMUNICATIONS, INC.


- --------------------------------------------------------------------------------

             (Exact name of registrant as specified in its charter)

             Delaware                                   39-1706857
- --------------------------------            -----------------------------------
(State or other jurisdiction of             (I.R.S. Employer Identification No.)
 incorporation or organization)

            8410 West Bryn Mawr, Suite 1100, Chicago, Illinois 60631
            --------------------------------------------------------
               (Address of principal executive offices) (Zip Code)

       Registrant's telephone number, including area code: (773) 399-4200

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.
                                               Yes   X    No
                                                  ------     ------
Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest practicable date.

               Class                               Outstanding at July 30, 1999
- -------------------------------------              ----------------------------
    Common Shares, $1 par value                          31,923,975 Shares
Series A Common Shares, $1 par value                     40,000,000 Shares

- --------------------------------------------------------------------------------




<PAGE>



                           AERIAL COMMUNICATIONS, INC.
                           ---------------------------
                         2nd QUARTER REPORT ON FORM 10Q
                         ------------------------------
                                      INDEX
                                      -----
                                                                       Page No.
                                                                       -------
Part I.           Financial Information

                  Management's Discussion and Analysis of
                     Results of Operations and Financial Condition        2-12

                  Consolidated Statements of Operations -
                     Three Months and Six Months Ended June 30,
                     1999 and 1998                                          13

                  Consolidated Statements of Cash Flows -
                     Six Months Ended June 30, 1999 and 1998                14

                  Consolidated Balance Sheets -
                     June 30, 1999 and December 31, 1998                    15

                  Notes to Consolidated Financial Statements             16-18


Part II.          Other Information                                      19-20

Signatures                                                                  21



<PAGE>



                          PART I. FINANCIAL INFORMATION
                         ------------------------------
                           AERIAL COMMUNICATIONS, INC.
                         -----------------------------
          MANAGEMENT'S DISCUSSION AND ANALYSIS OF RESULTS OF OPERATIONS
          -------------------------------------------------------------
                             AND FINANCIAL CONDITION
                             -----------------------
RESULTS OF OPERATIONS
- ---------------------

Aerial  Communications,  Inc. ("Aerial" or the "Company" - NASDAQ symbol: AERL),
an 82.2%- owned  subsidiary  of Telephone and Data Systems,  Inc.  ("TDS"),  was
formed to acquire  Personal  Communications  Services  ("PCS") licenses from the
Federal Communications  Commission ("FCC"),  construct PCS networks in its Major
Trading Areas ("MTAs") and offer wireless PCS  communications  services in these
areas.   The   Company   provides   PCS   service  in   Minneapolis,   Tampa-St.
Petersburg-Orlando,  Houston,  Pittsburgh,  Kansas City and Columbus (Ohio). The
Columbus MTA launched  service on March 27, 1997.  The Company's  five remaining
MTAs launched service during the second quarter of 1997.

The  following  is a table  of  summarized  operating  data  for  the  Company's
consolidated operations.
<TABLE>
<CAPTION>
                                                               June 30,     March 31, June 30,      March 31,
As of:                                                           1999         1999      1998          1998
- ------                                                           ----         ----      ----          ----
<S>                                                            <C>         <C>        <C>          <C>
Total MTA population (in millions)                                27.5        27.7       27.6         27.6
Total customers                                                346,600     331,600    204,000      166,000
Net customer additions (quarter)                                15,000      19,700     38,000       41,000
Churn rate (year to date)                                         4.8%        4.7%       5.3%         4.3%
Churn rate (quarter)                                              4.8%        4.7%       6.0%         4.3%
Average revenue per customer per month (year to date)              $46         $46        $53          $57
Average revenue per customer per month (quarter)                   $47         $46        $51          $57
MTA penetration                                                  1.26%       1.20%      0.74%        0.60%
Cell sites in service                                            1,207       1,180      1,133        1,118
</TABLE>

Through the first half of 1999 the Company has  experienced a decline in its net
customer  growth  rate  compared to the same period of the  previous  year.  The
Company plans to increase its net customer growth rate through the selective use
of  competitive  promotions and expansion of third party dealer and Aerial owned
outlets.  The benefits of these  activities  are  expected to be fully  realized
during the fourth quarter.

Six Months Ended 6/30/99 Compared to Six Months Ended 6/30/98
- -------------------------------------------------------------

Operating Revenues
- ------------------

Operating  revenues totaled $105.3 million in 1999, an increase of $37.9 million
as compared to 1998. The increase in operating  revenues  reflects the growth of
the  Company's  customer  base in the past year as the Company has added 142,600
customers since June 30, 1998.

Service  revenue  totaled $91.9 million in 1999, an increase of $39.0 million as
compared  to 1998.  Service  revenue  primarily  consists of charges for access,
airtime and value-added services provided to the Company's customers who use the
network operated by the Company (local

                                        2

<PAGE>



service revenue). Service revenue also consists of charges to customers of other
wireless carriers who use the Company's network when roaming (outcollect roaming
revenue)  and  charges for  long-distance  calls made on the  Company's  systems
(long-distance  revenue). The increase in 1999 service revenue was driven by the
growth in the number of customers  using the  Company's  network  during 1999 as
compared to 1998,  partially offset by a decline in average revenue per customer
per month ("ARPU"). The Company's ARPU was $46 for the six months ended June 30,
1999 as  compared  to $53 for the same  period  in  1998.  The  decline  in ARPU
reflects the addition of more moderate wireless users to the Company's  customer
base.

Equipment sales revenue represents the sale of handsets and related  accessories
to  retailers,  independent  agents,  and end user  customers.  Equipment  sales
totaled  $13.4  million in 1999, a decrease of $1.1 million as compared to 1998.
The decrease in  equipment  sales  revenue is due  primarily to a decline in the
number of handsets sold in 1999 as compared to 1998.

Operating Expenses
- ------------------

Operating expenses totaled $202.5 million in 1999, a decrease of $1.7 million as
compared to 1998.  Operating expenses increased across most functional areas due
to the Company's  increased level of business  activity during the first half of
1999 as compared to 1998.  However,  these  increases were more than offset by a
decrease  in customer  service  expense  and a  significant  decrease in cost of
equipment sold.

System  operations  expense  totaled  $40.5 million in 1999, an increase of $6.4
million as compared to 1998. System maintenance expenses increased $5.4 million,
primarily  for  maintenance  service  performed on the  Company's  network.  The
Company began incurring  charges for these services during the second quarter of
1998.

Marketing and selling expense totaled $37.9 million in 1999, an increase of $2.5
million as compared  to 1998.  Gross  customer  additions  were a  disappointing
129,000  in 1999 as  compared  to  132,000  in  1998,  despite  an  increase  in
advertising,  promotion and store rent expenses which contributed  significantly
to the overall increase in marketing and selling expense.

Customer  service  expense  totaled  $20.2  million in 1999,  a decrease of $3.5
million as  compared  to 1998.  The  decrease  in  customer  service  expense is
primarily  due to a  decrease  in bad  debt  expense  as a  result  of  improved
processes in accounts receivable and fraud management.

Cost of  equipment  sold  totaled  $25.6  million in 1999,  a decrease  of $17.8
million as compared to 1998.  The  decrease  reflects a  significant  decline in
handset cost per unit combined with a decrease in handsets sold.

General and administrative expense totaled $34.2 million in 1999, an increase of
$7.5 million as compared to 1998.  Consulting expense increased $3.6 million due
to costs  associated  with the Year 2000  Issue.  Salaries  and  other  employee
related  expenses  increased  $3.8 million  reflecting  an increase in personnel
since June 30, 1998.


                                        3

<PAGE>



Depreciation  expense was $40.4  million in 1999, an increase of $3.3 million as
compared to 1998.  The  increase is due to an  increase in the  Company's  fixed
asset balances.  As of June 30, 1999, the Company had $742.3 million of property
and  equipment  in service as  compared to June 30,  1998,  when the Company had
$667.6 million of property and equipment in service.

Operating (Loss)
- ----------------

Operating (Loss) totaled $(97.2) million in 1999, a decrease of $39.6 million as
compared to 1998,  largely as a result of the increase in operating  revenues in
1999.  Although  service  revenues  are  expected to continue to grow during the
remainder of 1999 as the Company builds its customer  base, the Company  expects
to continue to have operating losses and to generate negative cash flow at least
through 2000 as it incurs costs associated with that growth.

Investment and Other Income (Expense)
- -------------------------------------

Investment and Other Income (Expense)  totaled $5.3 million in 1999, an increase
of $5.0  million as  compared to 1998.  The  increase  is  primarily  due to the
allocation of $4.9 million of the  consolidated  net (loss) of Aerial  Operating
Company,  Inc. ("AOC") to the Company's minority investor (See Note 5 - Minority
Interest).

Interest and Income Taxes
- -------------------------

Interest  expense-affiliate  totaled  $33.6 million in 1999, an increase of $3.7
million as  compared to 1998.  In 1999,  interest  expense-affiliate  represents
interest on amounts  borrowed under the Revolving  Credit Agreement with TDS and
the 3%  guarantee  fees  associated  with the Series A and Series B Zero  Coupon
Notes and the Nokia 1998 Credit Agreement. During the fourth quarter of 1998 the
interest rate charged on the  outstanding  balance  under the  Revolving  Credit
Agreement was increased from prime rate plus 1.5% to prime rate plus 3.0%.

Interest  expense-other  totaled  $10.4  million in 1999,  an  increase  of $2.0
million as compared to 1998. In 1999, interest expense-other relates to interest
expense  accreted  on the Series A and Series B Zero  Coupon  Notes,  as well as
interest  expense  related  to the Nokia  1998  Credit  Agreement.  The  average
outstanding  balance of long-term  debt was greater in 1999 as compared to 1998,
resulting in greater interest expense.

Income taxes. The Company is included in a consolidated  federal tax return with
other members of the TDS consolidated  group. For financial  reporting purposes,
the Company  computes  its federal  income taxes as if it were filing a separate
return as its own  affiliated  group and was not included in the TDS group.  TDS
and the Company are parties to a tax  allocation  agreement,  as well as a March
12, 1999 tax settlement agreement calling for the payment of $114.5 million from
TDS to Aerial.  The $114.5 million  received by Aerial covered the estimated tax
losses  incurred by the Company and used by TDS for the period  commencing  from
January 1, 1996 through August 31, 1999. The tax settlement  agreement  requires
the final  settlement  amount to cover tax losses incurred by Aerial and used by
TDS for the period  commencing  January 1, 1996 and ending  with the date of the
spin-off of Aerial.


                                        4

<PAGE>



The  payment of the $114.5  million by TDS,  partially  offset by an increase in
deferred  income  tax  expense  of $1.3  million,  resulted  in a net income tax
benefit of $113.2 million for the first half of 1999.

Net (Loss) and (Loss) Per Common and Series A Common Share
- ----------------------------------------------------------

Net (loss)  totaled  $(22.6)  million in 1999 and $(176.4)  million in 1998. Net
(loss) per Common and Series A Common  Share was  $(0.31) in 1999 and $(2.46) in
1998.  The  decrease in the  Company's  Net (loss) and Net (loss) per Common and
Series A Common Share in 1999 as compared to 1998 is due to increased  operating
revenues and the income tax benefit  generated by the $114.5 million received by
the Company from TDS related to the tax settlement agreement.

Three Months Ended 6/30/99 Compared to Three Months Ended 6/30/98

Operating Revenues
- ------------------

Operating  revenues  totaled $54.8 million in 1999, an increase of $18.1 million
as compared to 1998.  Service revenue totaled $47.8 million in 1999, an increase
of $18.9 million as compared to 1998.  The increase in 1999 service  revenue was
driven by the  growth in the number of  customers  using the  Company's  network
during  1999 as  compared  to 1998  partially  offset by a decline in ARPU.  The
Company's  ARPU was $47 for the three  months ended June 30, 1999 as compared to
$51 for the same period in 1998.  The decline in ARPU  reflects  the addition of
more moderate  wireless users to the Company's  customer base.  Equipment  sales
totaled  $7.0  million in 1999,  a decrease of $1.0 million as compared to 1998.
The  decrease in equipment  sales  revenue  reflects  primarily a decline in the
number of handsets sold in 1999 as compared to 1998.

Operating Expenses
- ------------------

Operating  expenses  were $102.1  million in 1999, a decrease of $2.0 million as
compared to 1998.  The decrease in operating  expenses is for reasons  generally
the same as the first half of 1999.

Operating (Loss)
- ----------------

Operating (Loss) totaled $(47.3) million in 1999, a decrease of $20.1 million as
compared to 1998,  largely as a result of the increase in operating  revenues in
1999.

Net (Loss) and (Loss) Per Common and Series A Common Share
- ----------------------------------------------------------

Net (loss)  totaled  $(56.0)  million in 1999 and $(89.5)  million in 1998.  Net
(loss) per Common and Series A Common  Share was  $(0.78) in 1999 and $(1.25) in
1998.  The decrease in the Company's Net loss and Net loss per Common and Series
A  Common  Share  in 1999 as  compared  to  1998 is due to  increased  operating
revenues and the allocation of $12.9 million of the  consolidated  net (loss) of
AOC to the Company's minority investor (See Note 5 - Minority Interest).

                                        5

<PAGE>



LIQUIDITY AND CAPITAL RESOURCES
- -------------------------------

The costs of development,  construction,  start-up and post-launch activities of
the Company require substantial  capital.  From inception through June 30, 1999,
the  Company  had  expended  $304.4  million  for  its six  licenses,  including
capitalized  interest,  $770.0  million for all other capital  expenditures  and
incurred  cumulative  net  losses of $653.5  million.  The  Company  expects  to
continue to incur  significant  operating losses and generate negative cash flow
from  operating  activities  at least  through 2000 as it continues to build its
customer base.

Cash flows from operating  activities provided $6.9 million in 1999 and required
$118.8  million  in  1998.   Operating  cash  outflow   (operating  loss  before
depreciation and amortization expense) totaled $53.0 million in 1999 as compared
to $95.8  million in 1998.  Cash flows  from the March 12,  1999 tax  settlement
agreement  with TDS  provided  $114.5  million in 1999 and cash flows from other
operating activities (investment and other income, interest expense,  changes in
working  capital and changes in other  assets and  liabilities)  required  $54.6
million in 1999 and required $23.0 million in 1998.

Cash flows from  financing  activities  provided $6.1 million in 1999 and $162.6
million  in  1998.  Cash  provided  in 1999  was  primarily  due to the  Company
borrowing $119.0 under the Revolving Credit Agreement with TDS. The Company paid
$114.5  million to TDS to repay a portion of the  outstanding  balance under the
Revolving Credit Agreement with the proceeds from the tax settlement  agreement.
In 1998,  borrowings  under  the  Revolving  Credit  Agreement  provided  $161.8
million.

Cash  flows  used in  investing  activities  totaled  $13.5  million  in 1999 as
compared to $46.9 million in 1998.  Cash used in 1999 and 1998 was primarily for
additions  to property  and  equipment  for PCS network and  information  system
assets.  Fixed asset additions were financed through a combination of borrowings
under the Revolving  Credit  Agreement with TDS, and proceeds from Series B Zero
Coupon Notes and the Nokia 1996 and 1998 Credit Agreements.

For all of 1999,  the Company  estimates  that the aggregate  funds required for
capital  expenditures  for the  continuing  development  of its PCS networks and
services will total  approximately  $100  million.  The Company will be building
additional cell sites to augment its existing coverage area,  primarily corridor
coverage on  interstates  to suburbs.  The Company will  continue to upgrade its
switching and other fixed network  equipment to support future customer  growth.
Also in 1999, capital expenditures related to information systems will include a
significant upgrade of the Company's billing and customer care system, including
new hardware and software to support  employee and customer  growth,  to address
the Year 2000 Issue and for other project initiatives.

The Company estimates requiring $210 million for working capital requirements to
fund operations for all of 1999,  including an estimated $75 million in interest
expense.

On June 30,  1998,  the  Company  and Nokia  Telecommunications  Inc.  ("Nokia")
entered into an agreement ("1998 Credit  Agreement") in which Nokia will provide
up to an aggregate  $150 million in financing to the Company for the purchase of
network  infrastructure  equipment and services from Nokia. Loans under the 1998
Credit Agreement are to be made available in two

                                        6

<PAGE>



tranches.  With respect to Tranche A, the Company  borrowed  $68.5  million and,
upon its written  notice and payment of an extension fee to Nokia,  extended the
maturity  date of  Tranche A loans to June 30,  2000.  A second  tranche  of $75
million ("Tranche B") became available commencing on June 30, 1999. The maturity
date of both the Tranche A and Tranche B loans is June 30, 2000. The obligations
of the Company  under the 1998 Credit  Agreement  are fully and  unconditionally
guaranteed by TDS at an annual fee rate of 3%. As of June 30, 1999,  the Company
had $75.0 million  available for borrowing under the 1998 Credit  Agreement with
Nokia.

Under the TDS Revolving  Credit  Agreement,  as amended,  AOC may borrow up to a
maximum  amount (the  "Maximum  Amount"),  less the amount of any debt or equity
financing obtained by AOC or the Company, including the amount of any borrowings
under the Nokia 1998 Credit  Agreement.  However,  debt financing related to the
Company's  Series A and Series B Zero  Coupon  Notes does not change the Maximum
Amount.  The Maximum  Amount under the amended  Revolving  Credit  Agreement was
increased to $650 million in February  1999. The interest rate under the amended
Revolving  Credit  Agreement is equal to the prime rate plus 3%. Interest on the
balance due under the amended  Revolving Credit  Agreement is payable  quarterly
and no principal  is payable  until April 2, 2000.  In March 1999,  TDS paid the
Company $114.5  million as a settlement  for tax losses  incurred by the Company
and utilized by the TDS  consolidated  tax group.  The Company used the funds to
repay a portion of the existing AOC indebtedness to TDS, thereby  increasing the
amount available under the Revolving Credit Agreement.  The net amount available
for borrowings  under the Revolving  Credit  Agreement was $27.1 million at June
30, 1999.

In July 1999, an amendment to the Revolving Credit Agreement was approved by the
TDS and Aerial  boards of directors  which  increased  from $650 million to $775
million  the  Maximum  Amount  under the  amended  Revolving  Credit  Agreement.
Accordingly,  available  funding  under the  Revolving  Credit  Agreement is now
expected to last through  December  1999.  TDS has not  committed to any further
financing of Aerial's operations.  It is the intent of TDS and Aerial management
to obtain the necessary  level of financial  support from sources other than TDS
to enable  the  Company  to pay its debts as they  become  due.  TDS and  Aerial
management  believe the Company has the ability to obtain  financial  support in
order to pay its debts as they become  due.  Sources of  additional  capital may
include vendor  financing and public and private  equity and debt  financings by
the Company or its  subsidiaries.  If sufficient future funding is not available
on terms and prices acceptable to the Company,  the Company would have to reduce
its  construction  and operating  activities or take other actions,  which could
have a material adverse impact on the Company's  financial condition and results
of operations.

Proposed TDS Corporate Restructuring

In December 1998, TDS announced that it was pursuing a tax-free  spin-off of its
82.2% interest in Aerial, as well as reviewing other alternatives.  On August 4,
1999,  TDS  submitted a request for a private  letter  ruling from the  Internal
Revenue  Service  ("IRS") on the tax-free  status of the  spin-off.  There are a
number of  conditions  that must be met for a  spin-off  to occur,  including  a
receipt of a favorable  IRS  ruling,  final  approval by the TDS Board,  certain
government  and third party  approvals and review by the Securities and Exchange
Commission  ("SEC") of appropriate SEC filings.  TDS intends to seek shareholder
approval of a proposal to distribute Aerial Series A

                                        7

<PAGE>



Common Shares, on a pro-rata basis, to holders of TDS Series A Common Shares and
Aerial Common  Shares,  on a pro-rata  basis,  to holders of TDS Common  Shares.
There can be no  assurance  that a spin-off  will be  consummated  or that other
alternatives  will not be pursued.  Prior to any  spin-off,  it is expected that
Aerial will seek additional  financing so that Aerial would have the appropriate
capitalization  to operate as a  stand-alone  entity.  In  connection  with such
financing,  all or a  portion  of  Aerial's  debt to TDS may be  converted  into
equity.

On  September  8,  1998,  pursuant  to the terms of a  Purchase  Agreement  (the
"Purchase  Agreement") between TDS, the Company,  AOC and Sonera Ltd., a limited
liability  company  organized  under  the  laws of  Finland  ("Sonera"),  Sonera
purchased approximately 2.4 million shares of common stock of AOC representing a
19.4% equity interest in AOC (subject to adjustment under certain circumstances)
for the aggregate purchase price of $200 million.  Sonera has the right, subject
to adjustment under certain circumstances,  to exchange each share of AOC common
stock which it owns for 6.72919  Common  Shares of Aerial.  Upon the exchange of
all of the above  AOC  shares,  Sonera  would own an 18.4%  equity  interest  in
Aerial,  reflecting a purchase  price  equivalent  to $12.33 per Common Share of
Aerial (the "Equivalent Purchase Price").

Following  the  announcement  by TDS on December 18,  1998,  that it intended to
distribute to its  shareholders all of the capital stock of Aerial that it owns,
and that Aerial would seek  additional  financing from sources other than TDS in
connection therewith, Sonera contacted TDS to express certain concerns about the
announcement.  Sonera has claimed that it was induced to pay an excessive  price
for AOC common stock.  Sonera has requested the renegotiation of certain matters
related to Sonera's investment in AOC, including an adjustment in the Equivalent
Purchase  Price,   and  raised  the  possibility  of  litigation  in  connection
therewith.

Under the Purchase  Agreement,  the number of AOC shares  purchased by Sonera is
subject to reduction if the average price of the Company's Common Shares exceeds
certain  threshold  prices.  During the second  quarter and on July 7, 1999, the
average  price of the  Company's  Common  Shares  exceeded all of the  threshold
prices  set  forth in the  Purchase  Agreement.  Accordingly,  the  Company  has
requested Sonera to surrender for cancellation an aggregate of 634,216 shares of
AOC  common  stock.  Cancellation  of these  shares  would  have the  effect  of
increasing  Sonera's  Equivalent Purchase Price from $12.33 to $16.68 per Common
Share of the Company.  However,  Sonera has refused to surrender  any AOC shares
and, in connection with its allegations, as discussed above, has objected to the
application of the share reduction provisions in the Purchase Agreement.

TDS and the Company deny Sonera's allegations and deny that Sonera has any right
to refuse to return the shares of AOC common stock for cancellation. TDS and the
Company are attempting to reach a mutually acceptable  resolution of open issues
with Sonera,  including Sonera's objection to the adjustment of Sonera shares in
AOC.  However,  there  can be no  assurance  that  any such  resolution  will be
possible and that this matter will not lead to  litigation,  or that it will not
have a material adverse effect on TDS or the Company or on the plans relating to
the spin-off and refinancing of the Company.




                                        8

<PAGE>



Market Risk

The  Company is subject to market  rate risks due to  fluctuations  in  interest
rates and equity  markets.  The majority of the Company's debt is in the form of
variable rate notes with  original  maturities  ranging from 1 to 10 years.  The
Series A and  Series B Zero  Coupon  Notes are fixed  rate debt and,  therefore,
fluctuations  in interest  rates can lead to  fluctuations  in the fair value of
these instruments. The Company has not entered into any financial derivatives to
reduce its exposure to interest rate risks. There has been no material change in
the fair value  relative to the Company's  outstanding  debt since  December 31,
1998.

Year 2000 Issue

The Year 2000 Issue  exists  because  many  computer  systems  and  applications
abbreviate  dates using only two digits,  rather than four  digits,  e.g.,  "98"
rather than "1998". Unless corrected,  this shortcut may cause problems when the
century date "2000"  occurs.  On that date,  some  computer  operating  systems,
applications and embedded  technology may recognize the date as January 1, 1900,
instead of January 1, 2000.  If the Company  fails to correct any critical  Year
2000  processing  problems  prior to January 1, 2000,  the affected  systems may
either cease to function or produce  erroneous  data,  which could have material
adverse operational and financial consequences.

The  Company's  management  has  established a project team to address Year 2000
issues.  The  Company's  plan to address  the Year 2000 Issue  consists  of five
general  phases:  (i)  Awareness,  (ii)  Assessment,   (iii)  Renovation,   (iv)
Validation and (v) Implementation.

The Awareness phase consisted of developing an overall  compliance  strategy and
establishing a Year 2000 project team that reports periodically to the Company's
Audit  Committee.  TDS Management has  established a Year 2000 Program Office at
the TDS corporate level to coordinate activities of the Year 2000 project teams,
to monitor the current status of individual projects,  to report periodically to
the TDS Audit Committee,  and to promote the exchange of information between all
business units to share knowledge and solution techniques.  On an ongoing basis,
the project  teams  continue  to provide  Year 2000  information  and updates to
customers,  employees and business partners. Aerial management has made the Year
2000  Issue a top  priority.  The  Year  2000  effort  covers  the  network  and
supporting infrastructure for the provision of PCS services; the operational and
financial  information  technology  ("IT")  systems  and  applications,  such as
computer systems that support key business  functions such as billing,  finance,
customer  service,  procurement  and  supply;  and a  review  of the  Year  2000
compliance efforts of the Company's critical vendors.

The  Assessment  phase  included the  identification  of core business areas and
processes,  analysis of systems and hardware  supporting the core business areas
and the prioritization of renovation or replacement of systems and hardware that
are not Year 2000 compliant.  Included in the Assessment phase is an analysis of
risk management factors such as contingency plans and legal matters.  Except for
the contingency  plans as discussed below, the Assessment phase was completed in
the first quarter of 1999.


                                        9

<PAGE>



The Year 2000 project team identified those mission critical  hardware,  systems
and applications that were not Year 2000 compliant.  These noncompliant critical
hardware,  systems and applications  have undergone  renovation.  The Renovation
phase consisted of the remediation or replacement of mission  critical  systems,
applications  and  hardware.   The  renovation  of  mission  critical   systems,
applications and hardware has been completed.

The mission critical hardware, systems and applications that have been renovated
are undergoing  Year 2000  validation  testing.  The  Validation  phase includes
testing,   verifying  and  validating  the  renovated  or  replaced   platforms,
applications,   databases  and  utilities.  The  Validation  phase  consists  of
independent  verification testing of mission critical systems,  applications and
hardware,  as well as  network  and  system  component  upgrades  received  from
suppliers.  In  addition,  selected  Year 2000  upgrades  are  slated to undergo
testing in a controlled  environment that replicates the current environment and
is equipped to simulate the turn of the century and leap year dates. The Company
will rely on the Cellular Telephone Industry Association ("CTIA"),  Alliance for
Telecommunications  Industry  Solutions  ("ATIS") and TELCO Forum,  which formed
working groups to coordinate  efforts of various  carriers and  manufacturers to
facilitate  inter-network Year 2000 testing.  These programs have concluded and,
generally,   the   findings   indicate   that   there   are  no  known   network
inter-operability  defects  related to Year 2000  associated  with the available
compliant  upgrades for the networks.  The Company has analyzed the findings and
plans to install  upgrades  appropriate  to its network.  Validation  of mission
critical hardware,  systems and applications is scheduled to be completed in the
third quarter of 1999.

The  Implementation  phase  involves  migrating  the  converted,  renovated  and
validated mission critical  systems,  applications and hardware into production.
This phase is expected to be completed during the fourth quarter of 1999.

As with other telecommunications  services providers,  there exists a worst case
scenario  possibility  that a failure to  correct a Year 2000  problem in one or
more of the mission critical  network elements or IT applications  could cause a
significant   disruption  of,  or  interruption   in,  certain  normal  business
functions.  Management  believes it has assembled the proper staffing and tools,
and put in place procedures to identify and prepare all mission critical systems
for the Year 2000 and believes the necessary  programs are in place for a smooth
Year 2000 transition. Based on the assessments and work performed to date by the
project  team,  management  believes  that any such  material  disruption to the
operations due to failure on an internal system is unlikely. However, management
cannot provide  assurance that its plan to address Year 2000  compliance will be
successful  as the Company is subject to various risks and  uncertainties.  Like
most other telecommunications  operators, the Company is highly dependent on the
telecommunications  network vendors to develop and provide  compliant  hardware,
systems and applications and on other third parties,  including  vendors,  other
telecommunications   service  providers,   government   agencies  and  financial
institutions,  to deliver reliable services and timely upgrades. The Company has
contacted  critical  vendors  requesting   information  about  their  Year  2000
readiness.  The responses have been used by the Company to make its  renovations
and are being used in developing the Company's overall contingency plans.

The Company  cannot assess with  certainty  the magnitude of any such  potential
adverse  impact.  However,  based upon risk  assessment work conducted thus far,
management  believes that the most reasonably  likely worst case scenario of the
failure by the Company, its suppliers or other

                                       10

<PAGE>



telecommunications carriers with which the Company interconnects to resolve Year
2000   issues   would  be  an   inability   by  the   Company  to  (i)   provide
telecommunications  services to the Company's customers,  (ii) route and deliver
telephone   calls   originating   from   or   terminating   with   other   other
telecommunications   carriers,  (iii)  timely  and  accurately  process  service
requests and (iv) timely and accurately bill its customers.  In addition to lost
earnings,  these  failures could also result in loss of customers due to service
interruptions and billing errors,  substantial claims by customers and increased
expenses associated with stabilizing operations and executing contingency plans.

The  Company's   contingency   plan  initiatives  will  include  the  following:
reviewing,  assessing and updating existing business recovery plans; identifying
teams who will be on call during the  millennium  change to monitor the network,
critical systems, operations centers and business processes to react immediately
to facilitate  repairs;  re-prioritizing  of mission critical work processes and
associated  resources;   developing  alternate  processes  to  support  critical
customer  functions in the event  information  systems or  mechanized  processes
experience Year 2000 disruptions; establishing replacement/repair parallel paths
to provide for repair and readiness of existing  systems and components that are
scheduled  for  replacement  by the year  2000,  in the  event  the  replacement
schedules  are not met;  developing  alternate  plans for critical  suppliers of
products/services  that fail to meet Year 2000 compliance  commitment schedules;
and  developing  data  retention  and  recovery  procedures  to be in place  for
customer  and  critical  business  data to provide  pre-millennium  backups with
on-site as well as off-site data copies. The Company  anticipates  substantially
completing   the  balance  of  its  contingency  planning  early  in  the fourth
quarter of 1999.

The Company estimates that the total costs related to the Year 2000 project will
be  approximately  $17 million.  Through June 30, 1999, the total costs directly
associated with the Year 2000 Issue were approximately $9.2 million.  The timing
of expenditures may vary and is not necessarily  indicative of readiness efforts
or progress to date.  Though Year 2000 project  costs will  directly  impact the
reported  level of future net (loss),  the  Company  intends to manage its total
cost structure,  including  deferral of non-critical  projects,  in an effort to
mitigate the impact of Year 2000 project costs.
















                                       11

<PAGE>



PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995 SAFE HARBOR CAUTIONARY
STATEMENT

This Form 10-Q contains "forward-looking"  statements, as defined in the Private
Securities   Litigation   Reform  Act  of  1995,   that  are  based  on  current
expectations,  estimates and  projections.  Statements  that are not  historical
facts,  including  statements  about the Company's  beliefs and expectations are
forward-looking  statements.   These  statements  contain  potential  risks  and
uncertainties and, therefore,  actual results may differ materially. The Company
undertakes  no  obligation  to update  publicly any  forward-looking  statements
whether as a result of new information, future events or otherwise.

Important factors that may affect these projections or expectations include, but
are not limited to:  changes in the overall  economy;  changes in competition in
the Company's markets; advances in telecommunications technology; changes in the
telecommunications  regulatory  environment;   pending  and  future  litigation;
availability  of  future  financing;  unanticipated  changes  in  growth  in PCS
customers,  penetration  rates, churn rates and the mix of products and services
offered in the Company's markets and  unanticipated  problems with the Year 2000
Issue.  Readers  should  evaluate  any  statements  in light of these  important
factors.









































                                       12

<PAGE>



                               AERIAL COMMUNICATIONS, INC. AND SUBSIDIARIES
                                   CONSOLIDATED STATEMENTS OF OPERATIONS
                                              Unaudited
                                              ---------
<TABLE>
<CAPTION>

                                                         Three Months Ended          Six Months Ended
                                                               June 30,                   June 30,
                                                         -------------------         -----------------
                                                          1999         1998         1999         1998
                                                          ----         ----         ----         ----
                                                       (Dollars in thousands, except per share amounts)
<S>                                                   <C>          <C>          <C>          <C>
OPERATING REVENUES
    Service                                           $  47,795    $  28,852    $  91,893    $  52,935
    Equipment sales                                       6,990        7,836       13,433       14,499
                                                      ---------    ---------    ---------    ---------
        Total Operating Revenues                         54,785       36,688      105,326       67,434

OPERATING EXPENSES
    System operations                                    20,169       18,802       40,522       34,139
    Marketing and selling                                17,799       17,974       37,876       35,406
    Customer service                                     10,311       12,752       20,162       23,651
    Cost of equipment sold                               13,155       20,573       25,557       43,393
    General and administrative                           18,260       12,805       34,181       26,680
    Depreciation                                         20,550       19,356       40,432       37,163
    Amortization of intangibles                           1,888        1,888        3,777        3,777
                                                      ---------    ---------    ---------    ---------
        Total Operating Expenses                        102,132      104,150      202,507      204,209
                                                      ---------    ---------    ---------    ---------

OPERATING (LOSS)                                        (47,347)     (67,462)     (97,181)    (136,775)

INVESTMENT AND OTHER INCOME (EXPENSE)
    Minority share of loss                               12,945         --          4,902         --
    Investment (losses)                                    --           --           (100)        --
    Interest income-other                                   134          303          258          663
    Other income (expense)                                  891       (1,009)         231         (337)
                                                      ---------     --------    ---------    ---------
        Total Investment and Other Income (Expense)      13,970         (706)       5,291          326
                                                      ---------     --------    ---------    ---------

(LOSS) BEFORE INTEREST AND INCOME  TAXES                (33,377)     (68,168)     (91,890)    (136,449)

INTEREST EXPENSE
    Interest expense-affiliate                           16,532       16,169       33,568       29,842
    Interest expense-other                                5,389        4,251       10,397        8,358
                                                      ---------     --------    ---------    ---------
        Total Interest Expense                           21,921       20,420       43,965       38,200
                                                      ---------     --------    ---------    ---------

(LOSS) BEFORE INCOME TAXES                              (55,298)     (88,588)    (135,855)    (174,649)
    Income tax expense (benefit)                            704          886     (113,230)       1,746
                                                      ---------     --------    ---------    ---------
NET (LOSS)                                            $ (56,002)   $ (89,474)   $ (22,625)   $(176,395)
                                                      =========    =========    =========    =========

WEIGHTED AVERAGE COMMON AND
    SERIES A COMMON SHARES (000s)                        71,916       71,730       71,861       71,683
(LOSS) PER COMMON AND
    SERIES A COMMON SHARE                             $   (0.78)   $   (1.25)   $   (0.31)   $   (2.46)
                                                      =========    =========    =========    =========
<FN>
The accompanying notes to consolidated financial statements are an integral part
                              of these statements.
</FN>
</TABLE>

                                       13

<PAGE>



                  AERIAL COMMUNICATIONS, INC. AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                    Unaudited
                                    ---------
<TABLE>
<CAPTION>

                                                                  Six Months ended
                                                                       June 30,
                                                                 -----------------
                                                                 1999         1998
                                                                 ----         ----
                                                              (Dollars in Thousands)
<S>                                                           <C>          <C>
CASH FLOWS FROM OPERATING ACTIVITIES
    Net (Loss)                                                $ (22,625)   $(176,395)
    Add (Deduct) adjustments to reconcile net (loss)
        to net cash provided (used) by operating activities
    Depreciation and amortization                                44,209       40,940
    Noncash interest expense                                      8,978        7,565
    Deferred taxes                                                1,099        1,746
    Investment losses                                               100         --
    Minority share of operating (loss)                           (4,902)        --
    Loss on sale of property and equipment                          128          420
    Change in accounts receivable-customer                       (1,709)      (2,498)
    Change in inventory                                           1,380       13,188
    Change in accounts payable-affiliates                           325           18
    Change in accounts payable-trade                            (19,212)      (7,754)
    Change in accrued interest-affiliate                            (33)       1,320
    Change in other assets and liabilities                         (853)       2,665
                                                              ---------    ---------
                                                                  6,885     (118,785)
                                                              ---------    ---------

CASH FLOWS FROM FINANCING ACTIVITIES
    Change in Revolving Credit Agreement-TDS                    118,969      161,831
    Repayments of borrowings under the Revolving Credit
        Agreement-TDS                                          (114,500)        --
    Issuance of common stock                                      1,605          816
                                                              ---------    ---------
                                                                  6,074      162,647
                                                              ---------    ---------
CASH FLOWS FROM INVESTING ACTIVITIES
    Additions to property and equipment                         (12,966)     (48,061)
    Proceeds from sale of property and equipment                     33          298
    Change in temporary and other investments                      (524)         868
                                                              ---------    ---------
                                                                (13,457)     (46,895)
                                                              ---------    ---------
NET (DECREASE) IN CASH AND CASH
    EQUIVALENTS                                                    (498)      (3,033)
CASH AND CASH EQUIVALENTS-
    Beginning of period                                           4,943        5,012
                                                              ---------    ---------
    End of period                                             $   4,445    $   1,979
                                                              =========    =========


<FN>

The accompanying notes to consolidated financial statements are an integral part
                              of these statements.
</FN>
</TABLE>



                                       14

<PAGE>

<TABLE>


                  AERIAL COMMUNICATIONS, INC. AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS
<CAPTION>

                                                                     (Unaudited)
                                                                    June 30, 1999 December 31, 1998
                                                                    ------------- -----------------
                                                                        (Dollars in Thousands)
<S>                                                                     <C>          <C>
ASSETS
CURRENT ASSETS
    Cash and cash equivalents                                           $   4,445    $   4,943
    Temporary investments                                                    --             35
    Accounts receivable
        Customer, less allowance of $2,935 and $5,875, respectively        25,913       24,204
        Roaming                                                             1,340        2,252
        Other                                                               1,806        1,348
    Inventory                                                               9,998       11,378
    Prepaid rent                                                            3,024        3,666
    Other                                                                   3,585          898
                                                                        ---------    ---------
                                                                           50,111       48,724
                                                                        ---------    ---------
PROPERTY and EQUIPMENT
    In service and under construction                                     764,593      733,958
    Less accumulated depreciation                                        (153,049)    (112,677)
                                                                        ---------    ---------
                                                                          611,544      621,281
                                                                        ---------    ---------
INVESTMENTS
    Investment in PCS licenses-net of
        accumulated amortization of $15,820 and $12,044, respectively     285,711      289,488
    Other                                                                   1,902        1,444
                                                                        ---------    ---------
                                                                          287,613      290,932
                                                                        ---------    ---------
DEFERRED COSTS                                                                810          410
                                                                        ---------    ---------
TOTAL ASSETS                                                            $ 950,078    $ 961,347
                                                                        =========    =========

LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES
    Accounts payable
        Affiliates                                                      $   7,052    $   6,727
        Trade                                                              33,217       56,097
    Revolving credit agreement-TDS                                        554,412         --
    Current portion of long-term debt                                      68,458         --
    Accrued interest-affiliate                                              4,906        4,939
    Accrued compensation                                                    6,519        5,169
    Accrued taxes                                                           6,931        7,015
    Microwave relocation costs payable                                        399        1,828
    Other                                                                   4,236        4,349
                                                                        ---------    ---------
                                                                          686,130       86,124
                                                                        ---------    ---------
REVOLVING CREDIT AGREEMENT-TDS                                               --        549,943
                                                                        ---------    ---------
LONG-TERM DEBT                                                            241,501      278,010
                                                                        ---------    ---------
DEFERRED TAX LIABILITY-NET                                                 17,456       16,357
                                                                        ---------    ---------
MINORITY INTEREST                                                             479        5,835
                                                                        ---------    ---------
COMMON SHAREHOLDERS' EQUITY
    Common Shares, par value $1.00 per share                               31,921       31,789
    Series A Common Shares, par value $1.00 per share                      40,000       40,000
    Additional paid-in capital                                            586,041      584,114
    Retained deficit                                                     (653,450)    (630,825)
                                                                        ---------    ---------
                                                                            4,512       25,078
                                                                        ---------    ---------
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                              $ 950,078    $ 961,347
                                                                        =========    =========

<FN>
The accompanying notes to consolidated financial statements are an integral part
of these statements.
</FN>
</TABLE>







                                       15

<PAGE>



                  AERIAL COMMUNICATIONS, INC. AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.   The consolidated financial statements included herein have been prepared by
     the Company,  without audit,  pursuant to the rules and  regulations of the
     Securities  and  Exchange  Commission.  Certain  information  and  footnote
     disclosures  normally  included  in the  financial  statements  prepared in
     accordance  with  generally  accepted   accounting   principles  have  been
     condensed or omitted pursuant to such rules and  regulations,  although the
     Company  believes that the disclosures are adequate to make the information
     presented not misleading. It is suggested that these consolidated financial
     statements  be  read  in  conjunction  with  the   consolidated   financial
     statements and the notes thereto included in the Company's Annual Report on
     Form 10-K.

     The accompanying  unaudited  consolidated  financial statements contain all
     adjustments  (consisting  of only  normal  recurring  items)  necessary  to
     present fairly the financial position as of June 30, 1999, and December 31,
     1998, the results of operations for the six and three months ended June 30,
     1999 and 1998,  and the cash flows for the six months  ended June 30,  1999
     and 1998. The results of operations for the six and three months ended June
     30,  1999 and 1998,  are not  necessarily  indicative  of the results to be
     expected for the full year.

     Certain amounts reported in prior periods have been reclassified to conform
     to the current period presentation.

2.   Net  (Loss)  per  Common  and  Series A Common  Share for the six and three
     months  ended June 30, 1999 and 1998,  was  computed  based on the weighted
     average number of Common and Series A Common Shares  outstanding during the
     period.

3.   Comprehensive  income (loss) equals Net (loss) for the six and three months
     ended June 30, 1999 and 1998.

4.   Supplemental Cash Flow Information.  Additions to property and equipment of
     $23.0 million were financed through an increase in long-term debt.

     In the first half of 1999, the Company  incurred  interest charges totaling
     $44.0 million. The interest charges were comprised of $29.5 million related
     to the Revolving  Credit Agreement with TDS, $4.1 million for TDS guarantee
     fees on the Series A and Series B Zero Coupon Notes and  obligations  under
     the Nokia 1998 Credit  Agreement,  $1.2  million paid to Nokia for interest
     charges  relating to the 1998 Credit  Agreement,  $9.0  million in accreted
     interest on the Series A and Series B Zero Coupon Notes and $0.2 million in
     other interest charges.

     During  the first  half of 1998,  the  Company  incurred  interest  charges
     totaling  $38.3  million.  The  interest  charges  were  comprised of $26.8
     million  related to the Revolving  Credit  Agreement with TDS, $3.1 million
     for TDS  guarantee  fees on the Series A and Series B Zero Coupon Notes and
     obligations  under the Nokia 1996 Credit  Agreement,  $0.4  million paid to
     Nokia for  interest  charges  relating to the 1996 Credit  Agreement,  $7.5
     million in accreted interest on the Series A and Series B Zero Coupon Notes
     and $0.5 million in other interest charges.  Of these amounts,  the Company
     capitalized $0.1 million relating to its work in process expenditures.  The
     remaining $38.2 million was charged to expense.


                                       16

<PAGE>



5.   Minority  Interest.  On  September  8,  1998,  pursuant  to the  terms of a
     Purchase Agreement (the "Purchase Agreement") between TDS, the Company, AOC
     and Sonera Ltd., a limited  liability  company  organized under the laws of
     Finland  ("Sonera"),  Sonera purchased  approximately 2.4 million shares of
     common stock of AOC representing a 19.4% equity interest in AOC (subject to
     adjustment under certain circumstances) for the aggregate purchase price of
     $200 million.  Sonera has the right,  subject to  adjustment  under certain
     circumstances, to exchange each share of AOC common stock which it owns for
     6.72919 Common Shares of Aerial.  Upon the exchange of all of the above AOC
     shares,  Sonera would own an 18.4% equity interest in Aerial,  reflecting a
     purchase  price  equivalent  to $12.33  per  Common  Share of  Aerial  (the
     "Equivalent Purchase Price").

     See Note 8 - Proposed TDS  Corporate  Restructuring  for  discussion of the
     concerns raised by Sonera regarding the spin-off  announcement  made by TDS
     and certain issues related to the Purchase Agreement,  which has raised the
     possibility of litigation.

     Minority share of loss of $4.9 million  represents  Sonera's share of AOC's
     consolidated net loss for the first half of 1999.


6.   Revolving Credit Agreement. On March 12, 1999, the TDS and Aerial boards of
     directors approved a tax settlement agreement calling for payment of $114.5
     million from TDS to Aerial under the tax allocation  agreement.  The $114.5
     million received by Aerial covered the estimated tax losses incurred by the
     Company  and used by TDS for the  period  commencing  from  January 1, 1996
     through August 31, 1999. The tax  settlement  agreement  requires the final
     settlement  amount to cover tax losses  incurred  by Aerial and used by TDS
     for the period  commencing  January 1, 1996 and ending with the date of the
     spin-off of Aerial.  The  settlement  amount was used to repay a portion of
     the existing AOC indebtedness to TDS under the Revolving Credit  Agreement.
     The net amount available for borrowing under the Revolving Credit Agreement
     was $27.1 million at June 30, 1999.

     In July 1999, an amendment to the Revolving  Credit  Agreement was approved
     by the TDS and Aerial boards of directors which increased from $650 million
     to $775  million the Maximum  Amount  under the  amended  Revolving  Credit
     Agreement.

7.   Commitments.   At  June  30,   1999,   the  Company  had  orders   totaling
     approximately $3.7 million with Nokia  Telecommunications  Inc. for network
     infrastructure  equipment.  Also, at June 30, 1999,  the Company had orders
     totaling  approximately  $12.1  million  with various  handset  vendors for
     handsets and accessories.

8.   Proposed TDS Corporate Restructuring.  In December 1998, TDS announced that
     it was  pursuing a tax-free  spin-off of its 82.2%  interest in Aerial,  as
     well as reviewing  other  alternatives.  On August 4, 1999, TDS submitted a
     request for a private  letter  ruling  from the  Internal  Revenue  Service
     ("IRS")  on the  tax-free  status  of the  spin-off.  There are a number of
     conditions that must be met for a spin-off to occur, including a receipt of
     a favorable IRS ruling, final approval by the TDS Board, certain government
     and third  party  approvals  and  review  by the  Securities  and  Exchange
     Commission  ("SEC")  of  appropriate  SEC  filings.  TDS  intends  to  seek
     shareholder  approval of a proposal to  distribute  Aerial  Series A Common
     Shares,  on a pro-rata  basis, to holders of TDS Series A Common Shares and
     Aerial Common Shares, on a pro-rata basis, to holders of TDS Common Shares.
     There can be no assurance that a spin-off will be consummated or that other
     alternatives  will not be pursued.  Prior to any  spin-off,  it is expected
     that Aerial will seek additional financing so that Aerial would have the

                                       17

<PAGE>



     appropriate   capitalization  to  operate  as  a  stand-alone   entity.  In
     connection  with such  financing,  all or a portion of Aerial's debt to TDS
     may be converted into equity.

     Following the announcement by TDS on December 18, 1998, that it intended to
     distribute to its  shareholders  all of the capital stock of Aerial that it
     owns,  and that Aerial would seek  additional  financing from sources other
     than TDS in connection  therewith,  Sonera contacted TDS to express certain
     concerns about the announcement.  Sonera has claimed that it was induced to
     pay an  excessive  price for AOC common  stock.  Sonera has  requested  the
     renegotiation  of certain  matters  related to Sonera's  investment in AOC,
     including an adjustment in the Equivalent  Purchase  Price,  and raised the
     possibility of litigation in connection therewith.

     Under the Purchase Agreement,  the number of AOC shares purchased by Sonera
     is subject to reduction if the average price of the Company's Common Shares
     exceeds certain threshold prices.  During the second quarter and on July 7,
     1999, the average price of the Company's  Common Shares exceeded all of the
     threshold  prices set forth in the  Purchase  Agreement.  Accordingly,  the
     Company has requested  Sonera to surrender for cancellation an aggregate of
     634,216 shares of AOC common stock. Cancellation of these shares would have
     the effect of increasing  Sonera's Equivalent Purchase Price from $12.33 to
     $16.68 per Common  Share of the  Company.  However,  Sonera has  refused to
     surrender  any AOC shares  and,  in  connection  with its  allegations,  as
     discussed  above,  has objected to the  application of the share  reduction
     provisions in the Purchase Agreement.

     TDS and the Company deny Sonera's  allegations and deny that Sonera has any
     right to refuse to return the shares of AOC common stock for  cancellation.
     TDS  and  the  Company  are  attempting  to  reach  a  mutually  acceptable
     resolution of open issues with Sonera,  including Sonera's objection to the
     adjustment of Sonera shares in AOC. However, there can be no assurance that
     any such  resolution will be possible and that this matter will not lead to
     litigation,  or that it will not have a material  adverse  effect on TDS or
     the Company or on the plans relating to the spin-off and refinancing of the
     Company.





                                       18

<PAGE>



                           PART II. OTHER INFORMATION
                           --------------------------
Item 4.  Submission of Matters to a Vote of Security-Holders.

     At the Annual Meeting of Shareholders of Aerial Communications,  Inc., held
on May 7,  1999,  the  following  number  of votes  were  cast  for the  matters
indicated:

1.a.  Election  of one Class II Director of the Company by the holders of Common
      Shares:

<TABLE>
<CAPTION>

                                                                     Broker
   Nominee               For            Withhold                    Non-vote
   -------               ---            --------                    --------
<S>                   <C>                <C>                           <C>
Matti Makkonen        29,349,488         516,890                       -0-
</TABLE>

1.b.  Election of one Class III Director of the Company by the holders of Common
      Shares:

<TABLE>
<CAPTION>

                                                                      Broker
   Nominee                For            Withhold                    Non-vote
   -------                ---            --------                    --------
<S>                    <C>                <C>                           <C>
Pertti Miettunen       29,349,488         516,890                       -0-
</TABLE>

1.c. Election of three Class II Directors of the Company by the holder of Series
     A Common Shares:

<TABLE>
<CAPTION>

                                                              Broker
    Nominee                        For          Withhold     Non-vote
    -------                        ---          --------     --------
<S>                            <C>                 <C>         <C>
James Barr III                 600,000,000         -0-         -0-
Walter C.D. Carlson            600,000,000         -0-         -0-
J. Clarke Smith                600,000,000         -0-         -0-
</TABLE>


2. The proposal to ratify the selection of Arthur  Andersen LLP as the Company's
   Independent Public Accountants for the year ended December 31, 1999:

<TABLE>
<CAPTION>

                                                                       Broker
                              For               Against    Abstain    Non-vote
                              ---               -------    -------    --------
<S>                       <C>                   <C>        <C>           <C>
Series A
Common                    600,000,000              -0-        -0-        -0-
Shares
Common                     29,835,667           19,815     10,896        -0-
Shares
Total                     629,835,667           19,815     10,896        -0-
</TABLE>







3. The proposal to approve the Company's Retention Restricted Stock Unit Plan:

                                       19

<PAGE>



<TABLE>
<CAPTION>

                                                                         Broker
                           For               Against          Abstain   Non-vote
                           ---               -------          -------   --------
<S>                    <C>                   <C>                <C>          <C>
Series A
Common                 600,000,000               -0-               -0-       -0-
Shares
Common                  29,569,148           262,211            35,019       -0-
Shares
Total                  629,569,148           262,211            35,019       -0-
</TABLE>

Item 6.           Exhibits and Reports on Form 8-K.

     (a) Exhibits

         Exhibit 10.23 - Third  Amendment to the Revolving  Credit  Agreement by
         and between  Telephone  and Data  Systems,  Inc.  and Aerial  Operating
         Company, Inc.

         Exhibit 11 - Computation of earnings per common share.

         Exhibit 27 - Financial Data Schedule.

     (b) There were no reports on Form 8-K filed  during the quarter  ended June
         30, 1999.



                                       20

<PAGE>



                                   SIGNATURES
                                   ----------
     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.


                                       AERIAL COMMUNICATIONS, INC.
                                       ---------------------------
                                              (Registrant)



Date August 13, 1999            /s/ Donald W. Warkentin
     ---------------           -------------------------------------------------
                               Donald W. Warkentin
                               President
                               (Chief Executive Officer)


Date August 13, 1999           /s/ J. Clarke Smith
     --------------            -------------------------------------------------
                               J. Clarke Smith
                               Vice President-Finance and Administration
                               (Chief Financial Officer)


Date August 13, 1999           /s/ B. Scott DaiIey
     --------------            -------------------------------------------------
                               B. Scott Dailey
                               Vice President-Controller
                               (Principal Accounting Officer)


                                       21

<PAGE>




                                                                   Exhibit 10.23

                                 Third Amendment
                                     to the
                           Revolving Credit Agreement
                                 by and between
       Telephone and Data Systems, Inc. and Aerial Operating Company, Inc.

This Third Amendment (the "Third  Amendment") to the Revolving  Credit Agreement
dated as of August 31, 1998, as amended by the First Amendment  thereto dated as
of November 3, 1998 and by the Second Amendment thereto dated as of February 15,
1999 (the  "Revolving  Credit  Agreement")  by and  between  Telephone  and Data
Systems,  Inc. ("TDS"),  a Delaware  corporation,  and Aerial Operating Company,
Inc. (the "Company"),  a Delaware corporation,  is effective as of this 22nd day
of July, 1999. Undefined,  capitalized terms shall have the meanings assigned to
such terms in the Revolving Credit Agreement.

     WHEREAS,  TDS and the Company are parties to the Revolving Credit Agreement
and have agreed to enter into this Third  Amendment on the terms and  conditions
set forth herein.

     NOW,  THEREFORE,  in consideration of the premises set forth above, and for
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged,  and intending to be legally  bound,  TDS and the Company agree to
amend the Revolving Credit Agreement as follows:

1.           Amendments to the Revolving Credit  Agreement.  Effective as of the
             date first above written and subject to the execution of this Third
             Amendment by the parties  hereto,  the Revolving  Credit  Agreement
             shall be and hereby is amended as follows:

             1.1      Schedule  I to the  Revolving  Credit  Agreement  shall be
                      replaced  by the new  Schedule I to the  Revolving  Credit
                      Agreement attached to this Third Amendment.

             1.2      The second sentence of Section 2 shall be amended in its
                      entirety to read as follows:

                      "Notwithstanding the foregoing,  the aggregate outstanding
                      principal  balance  of the loans  shall be  prepaid by the
                      Company concurrently with:

                          (a) the Company's or Aerial's  receipt of any proceeds
                      of debt or equity securities issued by any such entity to,
                      or loans or  advances  made to or for the  benefit  of any
                      such entity by, any person or entity other than TDS or any
                      affiliate of TDS, which  prepayments  shall be made by the
                      Company in  amounts  equal to the gross  proceeds  of such
                      securities,  loans  or  advances  net  of  all  reasonable
                      expenses  and  fees  paid  by the  Company  or  Aerial  in
                      connection with the closing of such transaction, or




<PAGE>



                      (b) any of the following events:

                      (i) any merger,  sale or spin-off as a result of which the
                      Company is no longer  part of the TDS  consolidated  group
                      for financial accounting purposes,

                      (ii)  any sale, transfer or other disposition of all or
                      substantially all of the assets of the Company, or

                      (iii) any other event as a result of which TDS shall cease
                      to own,  directly or  indirectly,  issued and  outstanding
                      securities  of the  Company or Aerial  (A)  having  voting
                      power to elect a majority of the  directors of either such
                      company,  or  (B)  having  majority  voting  power  in all
                      matters other than the election of directors."

             1.3     Section 6(e) is amended in its entirety to read as follows:

                      Except for  proceedings  threatened  by Sonera,  Ltd.  and
                      disclosed  to TDS  prior to July 22,  1999,  there  are no
                      proceedings or investigations pending or threatened before
                      any court or arbitrator  or before or by any  governmental
                      authority in which there is a reasonable possibility of an
                      adverse decision which would  materially  adversely affect
                      the  business or financial  conditions  of the Company and
                      its Subsidiaries taken as a whole or materially impair the
                      ability of the  Company to perform its  obligations  under
                      this Revolving Credit Agreement or the Notes.

             1.4      The paragraph  immediately following Section 9(h) shall be
                      amended to delete the reference to "with  presentment"  in
                      the second sentence thereof and to substitute therefor the
                      words "without presentment".

             1.5      Section   10(b)  shall  be  amended  to  delete  the  word
                      "cellular"  in the  definition of the term "System" and to
                      substitute the word "wireless" therefor.

             1.6      Section  11(b)  shall  be  amended  to add  the  following
                      sentence immediately after the last sentence thereof:

          "A copy of each notice delivered hereunder shall also be delivered to:

                      Sidley & Austin at:   One First National Plaza

                                            Chicago, Illinois 60603

                                            Attention of Michael G. Hron, Esq."

2.           Conditions  Precedent.  This Third Amendment shall become effective
             as of the date above  written,  if,  and only if, TDS has  received
             duly executed  originals of this Third  Amendment from the Company,
             Aerial and TDS.

                                        2

<PAGE>




3.           Representations  and Warranties of the Company.  The Company hereby
             represents and warrants as follows:

             3.1      This Third Amendment and the Revolving  Credit  Agreement,
                      as amended  hereby,  constitute  legal,  valid and binding
                      obligations of the Company and are enforceable against the
                      Company in accordance with their terms.

             3.2      Upon  the  effectiveness  of  this  Third  Amendment,  the
                      Company   hereby   reaffirms   all   representations   and
                      warranties made in the Revolving Credit Agreement,  and to
                      the extent the same are not  amended  hereby,  agrees that
                      all such representations and warranties shall be deemed to
                      have been  remade as of the date of delivery of this Third
                      Amendment,   unless  and  to  the  extent  that  any  such
                      representation  and warranty is stated to relate solely to
                      an earlier  date,  in which case such  representation  and
                      warranty  shall be true  and  correct  as of such  earlier
                      date.

4.           Reference to and Effect on the Revolving Credit Agreement.

             4.1      Upon the  effectiveness of Section 1 hereof,  on and after
                      the date hereof,  each  reference in the Revolving  Credit
                      Agreement  to  "this  Agreement,"  "hereunder,"  "hereof,"
                      "herein"  or  words  of like  import  shall  mean and be a
                      reference  to the  Revolving  Credit  Agreement as amended
                      hereby,   and  each  reference  to  the  Revolving  Credit
                      Agreement in any other  document,  instrument or agreement
                      shall  mean and be a  reference  to the  Revolving  Credit
                      Agreement as modified hereby.

             4.2      The Revolving Credit Agreement, as amended hereby, and all
                      other  documents,   instruments  and  agreements  executed
                      and/or delivered in connection therewith,  shall remain in
                      full  force  and  effect,  and  are  hereby  ratified  and
                      confirmed.

             4.3      Except  as  expressly   provided  herein,  the  execution,
                      delivery and  effectiveness  of this Third Amendment shall
                      not  operate as a waiver of any right,  power or remedy of
                      TDS,  nor  constitute  a waiver  of any  provision  of the
                      Revolving   Credit   Agreement  or  any  other  documents,
                      instruments and agreements  executed  and/or  delivered in
                      connection therewith.

5.           Governing  Law.  This  Third  Amendment  shall be  governed  by and
             construed  in  accordance  with the  other  remaining  terms of the
             Revolving  Credit  Agreement  and the internal  laws (as opposed to
             conflict of law provisions) of the State of Illinois.

6.           Paragraph Headings.  The paragraph headings contained in this Third
             Amendment are and shall be without substance, meaning or content of
             any kind  whatsoever and are not a part of the agreement  among the
             parties hereto.

7.           Counterparts.  This Third  Amendment may be executed in one or more
             counterparts, each of which shall be deemed an original, but all of
             which together shall constitute one and the same instrument.


                                        3

<PAGE>




IN  WITNESS   WHEREOF,   the   parties   hereto,   by  their   duly   authorized
representatives,  have  executed this Third  Amendment to the  Revolving  Credit
Agreement, effective as of the date first written above.



Telephone and Data Systems, Inc.             Aerial Operating Company, Inc.


By:     /s/ Sandra L. Helton                 By: /s/ Donald W. Warkentin
        --------------------------               ----------------------------
Name:   Sandra L. Helton                         Name:Donald W. Warkentin
Title:  Executive Vice President - Finance       Title:       President

Date:    July 22, 1999                       Date:   July 22, 1999
     -----------------------------                 --------------------------


The Guarantor, without in any way establishing a course of dealing, as evidenced
by its  signature  below,  hereby (i) consents to the  execution and delivery of
this  Third  Amendment  by the  parties  hereto,  (ii)  agrees  that this  Third
Amendment shall not limit or diminish the obligations of the Guarantor under the
Guarantor's unconditional and irrevocable guarantee of the Company's obligations
of the Notes and the Revolving Credit Agreement, (iii) reaffirms its obligations
under such  guarantee,  and (iv) agrees that its  guarantee of such  obligations
remains in full force and effect and is hereby ratified and confirmed.

Aerial Communications, Inc.


By:          /s/ Donald W. Warkentin
             -----------------------
Name:        Donald W. Warkentin
Title:       President

Date:            July 22, 1999
             -----------------------

                                        4

<PAGE>

<TABLE>


                                   SCHEDULE I
                                       TO
                           REVOLVING CREDIT AGREEMENT
                             (revised July 22, 1999)



<CAPTION>

Period                                             Applicable Maximum Amount
- ------                                             -------------------------
<S>                                                      <C>
November 30, 1998 through December 30, 1998              $585,000,000
December 31, 1998 through January 30, 1999               $615,000,000
January 31, 1999 through February 14, 1999               $625,000,000
February 15, 1999 through July 22, 1999                  $650,000,000
July 22, 1999 through April 2, 2000                      $775,000,000
</TABLE>



































<PAGE>





                                                                      Exhibit 11
<TABLE>

                  Aerial Communications, Inc. and Subsidiaries
                    Computation of Earnings Per Common Share
                    (in thousands, except per share amounts)

<CAPTION>
Three Months Ended June 30,                                1999          1998
- ---------------------------                                ----          ----
<S>                                                      <C>          <C>
Basic Earnings Per Common Share:
    Net (Loss)                                           $ (56,002)   $ (89,474)
                                                         =========    =========
    Weighted average number of Common and Series A
        Common Shares Outstanding (1)                       71,916       71,730
                                                         =========    =========
Basic Earnings Per Common Share
    Net (Loss)                                           $   (0.78)   $   (1.25)
                                                         =========    =========

Diluted Earnings Per Common Share (2):
    Net (Loss)                                           $ (56,002)   $ (89,474)
                                                         =========    =========
    Weighted average number of Common and Series A
        Common Shares Outstanding (1)                       71,916       71,730
                                                         =========    =========
Diluted Earnings Per Common Share
    Net (Loss)                                           $   (0.78)   $   (1.25)
                                                         =========    =========
</TABLE>
<TABLE>
<CAPTION>

Six Months Ended June 30,                                   1999         1998
- -------------------------                                ---------    ---------
<S>                                                      <C>          <C>
Basic Earnings Per Common Share:
    Net (Loss)                                           $ (22,625)   $(176,395)
                                                         =========    =========
    Weighted average number of Common and Series A
        Common Shares Outstanding (1)                       71,861       71,683
                                                         =========    =========
Basic Earnings Per Common Share
    Net (Loss)                                           $   (0.31)   $   (2.46)
                                                         =========    =========
Diluted Earnings Per Common Share (2):
    Net (Loss)                                           $ (22,625)   $(176,395)
                                                         =========    =========
    Weighted average number of Common and Series A
    Common Shares Outstanding (1)                           71,861       71,683
                                                         =========    =========
Diluted Earnings Per Common Share
    Net (Loss)                                           $   (0.31)   $   (2.46)
                                                         =========    =========


(1)     Weighted average number of Common and Series A Common Shares outstanding
        was  calculated  based on the  number of shares  outstanding  during the
        period.

(2)     The Company adopted in 1997 Statement of Financial  Accounting Standards
        ("SFAS") No. 128,  "Earnings Per Common Share".  The  implementation  of
        SFAS No.  128 had no effect on  reported  (Loss) per Common and Series A
        Common Share due to the current Net (Loss).
</TABLE>


<PAGE>


<TABLE> <S> <C>

<ARTICLE>                     5
<LEGEND>
    This schedule contains summary financial information extracted from the
    consolidated financial statements of Aerial Communications, Inc. as of
    June 30, 1999, and for the six months then ended, and is qualified in its
    entirety by reference to such financial statements.
</LEGEND>

<MULTIPLIER>                                         1,000

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                              DEC-31-1999
<PERIOD-START>                                 JAN-01-1999
<PERIOD-END>                                   JUN-30-1999
<CASH>                                               4,445
<SECURITIES>                                             0
<RECEIVABLES>                                       28,848
<ALLOWANCES>                                         2,935
<INVENTORY>                                          9,998
<CURRENT-ASSETS>                                    50,111
<PP&E>                                             764,593
<DEPRECIATION>                                    (153,049)
<TOTAL-ASSETS>                                     950,078
<CURRENT-LIABILITIES>                              686,130
<BONDS>                                            241,501
                                    0
                                              0
<COMMON>                                            71,921
<OTHER-SE>                                         (67,409)
<TOTAL-LIABILITY-AND-EQUITY>                       950,078
<SALES>                                             13,433
<TOTAL-REVENUES>                                   105,326
<CGS>                                               25,557
<TOTAL-COSTS>                                      202,507
<OTHER-EXPENSES>                                    (5,291)
<LOSS-PROVISION>                                         0
<INTEREST-EXPENSE>                                  43,956
<INCOME-PRETAX>                                   (135,855)
<INCOME-TAX>                                      (113,230)
<INCOME-CONTINUING>                                (22,625)
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                          0
<CHANGES>                                                0
<NET-INCOME>                                       (22,625)
<EPS-BASIC>                                        (0.31)
<EPS-DILUTED>                                        (0.31)



</TABLE>


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