<PAGE>   1
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549


                                  FORM 10-Q/A
                                Amendement No. 1


   (MARK ONE)

      [X]   QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
            EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2000

                                       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 000-29667
                                              ----------


                        VOICESTREAM WIRELESS CORPORATION
--------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

            DELAWARE                                      91-1983600
-------------------------------                --------------------------------
(State or other jurisdiction of                (IRS Employer Identification No.)
incorporation or organization)

        12920-38th STREET S.E.,
         BELLEVUE, WASHINGTON                                    98006
---------------------------------------                     ---------------
(Address of principal executive offices)                       (Zip Code)


                                 (425) 378-4000
--------------------------------------------------------------------------------
              (Registrant's telephone number, including area code)


--------------------------------------------------------------------------------
      (Former name, former address and former fiscal year, if changed since
                                 last report.)


    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.

                  Title                Shares Outstanding as of May 5, 2000
-------------------------------------------------------------------------------
       Common Stock, no par value                    213,004,636

<PAGE>   2
                                EXPLANATORY NOTE


     This Amendment No. 1 to Quarterly Report on Form 10-Q/A is being filed to
modify the Consolidated Statements of Operations to allocate stock-based
compensation to the operating expense line items. Other than this modification
to the Consolidated Statements of Operations, all other information included
in the initial filing is unchanged.

PART I FINANCIAL INFORMATION
ITEM 1 FINANCIAL STATEMENTS


                        VOICESTREAM WIRELESS CORPORATION
                          CONSOLIDATED BALANCE SHEETS
                             (Dollars in thousands)

<TABLE>
<CAPTION>

                                                                                  March 31,         December 31,
                                                                                    2000                 1999
                                                                                -------------       -------------
                                                                                 (Unaudited)
                                                  ASSETS
<S>                                                                             <C>                 <C>
  Current assets:
    Cash and cash equivalents                                                   $     176,258       $     235,433
    Accounts receivable, net of allowance for doubtful accounts of
      $39,466 and $17,482, respectively                                               176,695              97,739
    Inventory                                                                         126,211              63,072
    Prepaid expenses and other current assets                                          79,552              14,332
                                                                                -------------       -------------
       Total current assets                                                           558,716             410,576

  Property and equipment, net of accumulated depreciation
    of $343,462 and $284,670, respectively                                          1,501,399             931,792
  Licensing costs and other intangible assets, net of accumulated
    amortization of $28,975 and $21,815, respectively                               1,426,833             450,261
  Goodwill, net of accumulated amortization
    of $17,153 and $0, respectively                                                 4,112,253
  Investments in and advances to unconsolidated affiliates                          1,075,787             409,721
  Other assets                                                                         16,421              19,563
                                                                                -------------       -------------
                                                                                $   8,691,409       $   2,221,913
                                                                                =============       =============

                                     LIABILITIES AND SHAREHOLDERS' EQUITY

  Current liabilities:
    Accounts payable                                                            $      58,699       $      22,878
    Accrued liabilities                                                               386,500             118,809
    Construction accounts payable                                                      51,254              61,398
    Current portion of long-term debt                                                 124,836
                                                                                -------------       -------------
       Total current liabilities                                                      621,289             203,085

  Long-term debt                                                                    4,223,245           2,011,451

  Commitments (Note 7)

  Preferred stock of consolidated subsidiary                                          302,339

  VoiceStream 2.5% convertible junior preferred stock; $0.001 par value;
     100,000,000 shares authorized; 7,606 shares
     issued and outstanding                                                           761,475

  Shareholders' equity:
    Common stock, $0.001 par value, and paid in capital; 1.0 billion shares
      authorized; 160,244,772 and 96,305,360
      shares issued and outstanding, respectively                                   4,078,164           1,095,539
    Deferred compensation                                                             (28,875)            (25,264)
    Deficit                                                                        (1,266,228)         (1,062,898)
                                                                                -------------       -------------
       Total shareholders' equity                                                   2,783,061               7,377
                                                                                -------------       -------------
                                                                                $   8,691,409       $   2,221,913
                                                                                =============       =============
</TABLE>


           See accompanying notes to consolidated financial statements

                                       1

<PAGE>   3


                        VOICESTREAM WIRELESS CORPORATION
                      CONSOLIDATED STATEMENTS OF OPERATIONS
                  (Dollars in thousands, except per share data)
                                   (Unaudited)


<TABLE>
<CAPTION>

                                                                          Three months ended March 31,
                                                                        ---------------------------------
                                                                             2000                1999
                                                                        -------------       -------------
<S>                                                                     <C>                 <C>
  Revenues:
      Subscriber revenues                                               $     170,750       $      53,246
      Prepaid revenues                                                         25,202                 904
      Roamer revenues                                                          10,184               1,742
      Equipment sales                                                          33,910              10,919
      Affiliate and other revenues                                             16,952                 900
                                                                        -------------       -------------
           Total revenues                                                     256,998              67,711
                                                                        -------------       -------------

  Operating expenses:
      Cost of service (excludes stock-based compensation of
           $574 and $0, respectively)                                          62,317              17,768
      Cost of equipment sales                                                  58,902              25,246
      Cost of engineering services                                                283
      Research and development, net                                               295
      General and administrative (excludes stock-based
           compensation of $4,333 and $0, respectively)                        79,049              21,392
      Sales and marketing (excludes stock-based compensation
           of $689 and $0, respectively)                                       87,580              35,022
      Depreciation and amortization                                            82,092              25,764
      Stock-based compensation                                                  5,596
                                                                        -------------       -------------
           Total operating expenses                                           376,114             125,192
                                                                        -------------       -------------

  Operating loss                                                             (119,116)            (57,481)
                                                                        -------------       -------------

  Other income (expense):
      Interest and financing expense, net                                     (81,231)            (11,605)
      Equity in net loss of unconsolidated affiliates                         (16,284)            (10,710)
      Interest income and other                                                15,044               2,610
      Accretion of preferred stock of consolidated subsidiary                  (1,743)
                                                                        -------------       -------------
           Total other income (expense)                                       (84,214)            (19,705)
                                                                        -------------       -------------

  Net loss                                                                   (203,330)            (77,186)
  Preferred dividends attributable to VoiceStream junior preferred               (875)
                                                                        -------------       -------------
  Net loss attributable to common shareholders                          $    (204,205)      $     (77,186)
                                                                        =============       =============

  Basic and diluted loss per common share                               $       (1.68)      $       (0.81)
                                                                        =============       =============

  Weighted average common shares used in computing
      basic and diluted loss per common share                             121,196,800          95,541,600
                                                                        =============       =============
</TABLE>



           See accompanying notes to consolidated financial statements


                                        2
<PAGE>   4


                        VOICESTREAM WIRELESS CORPORATION
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (in thousands)
                                   (Unaudited)
<TABLE>
<CAPTION>

                                                                           Three months ended March 31,
                                                                        ---------------------------------
                                                                             2000                1999
                                                                        -------------       -------------
<S>                                                                     <C>                 <C>
  Operating activities:
    Net loss                                                            $    (203,330)      $     (77,186)
    Adjustments to reconcile net loss to net cash
     used in operating activities:
       Depreciation and amortization                                           82,092              25,764
       Interest accretion on senior discount notes                             12,010
       Equity in net loss of unconsolidated affiliates                         16,284              10,710
       Stock-based compensation                                                 5,596
       Allowance for bad debt                                                  10,056                 213
       Other, net                                                              (5,085)                204
       Changes in operating assets and liabilities, net of effects
         from consolidating acquired interests:
           Accounts receivable, net                                           (31,346)             (5,071)
           Inventory                                                          (46,924)              5,775
           Prepaid expenses and other current assets                          (37,680)             (4,249)
           Accounts payable                                                    28,659             (11,853)
           Accrued liabilities                                                 73,355              12,863
                                                                        -------------       -------------
       Net cash used in operating activities                                  (96,313)            (42,830)
                                                                        -------------       -------------

  Investing activities:
    Purchase of property and equipment                                       (179,620)            (62,198)
    Additions to goodwill, licensing costs and
       other intangibles                                                       (2,855)             (1,374)
    Acquisition of wireless properties, net of cash acquired                 (418,205)
    Investments in and advances to unconsolidated affiliates                 (278,400)            (40,730)
    Other                                                                      (2,089)
                                                                        -------------       -------------
       Net cash used in investing activities                                 (881,169)           (104,302)
                                                                        -------------       -------------

  Financing activities:
    Proceeds from issuance of common stock and preferred stock, net         1,309,765
    Additions to long-term debt                                             1,900,000             150,000
    Repayment of long-term debt                                            (2,234,583)
    Deferred financing costs                                                  (56,875)
                                                                        -------------       -------------
       Net cash provided by financing activities                              918,307             150,000
                                                                        -------------       -------------

  Change in cash and cash equivalents                                         (59,175)              2,868

  Cash and cash equivalents, beginning of period                              235,433               8,057
                                                                        -------------       -------------

  Cash and cash equivalents, end of period                              $     176,258       $      10,925
                                                                        =============       =============
</TABLE>

           See accompanying notes to consolidated financial statements


                                       3

<PAGE>   5

                        VOICESTREAM WIRELESS CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  (Unaudited)


1. ORGANIZATION:

   We provide wireless communications services in urban markets in the United
States using the Global System for Mobile Communications, or GSM, technology. We
were incorporated in June 1999 as a Delaware corporation to act as the parent
company for business combinations involving our predecessor, now named VS
Washington Corporation. On February 25, 2000, pursuant to a reorganization
agreement approved by the stockholders of U.S. Washington and Omnipoint
Corporation we, as a holding company, became the parent of VS Washington and of
Omnipoint. On February 24, 2000, the stockholders of VS Washington and Aerial
Communications, Inc. approved our acquisition by merger of Aerial. The Aerial
merger was completed as of May 4, 2000. Our current business activities consist
of the combined businesses of VS Washington and Omnipoint.

   Prior to May 3, 1999, VS Washington was an 80.1% owned subsidiary of Western
Wireless Corporation. The remaining 19.9% was owned by Hutchison
Telecommunications PCS (USA) Limited, a subsidiary of Hutchison Whampoa Limited,
a Hong Kong company. On May 3, 1999, VS Washington was formally separated in a
spin-off transaction from Western Wireless' other operations.



2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:

   The accompanying interim consolidated financial statements and the financial
information included herein are unaudited, but reflect all adjustments which
are, in the opinion of management, necessary for a fair presentation of the
financial position, results of operations and cash flows for the periods
presented. All such adjustments are of a normal, recurring nature. Results of
operations for interim periods presented herein are not necessarily indicative
of results of operations for the entire year.


    Capitalized interest

   Our PCS licenses and wireless communications systems represent qualified
assets pursuant to Statement of Financial Accounting Standards ("SFAS") No. 34,
"Capitalization of Interest Cost." VoiceStream capitalized interest of $67,000
during the three months ended March 31, 2000 and $1.6 million during the same
period in 1999.



   Intangible assets and amortization

   Goodwill consists of the excess of the purchase price over the fair value of
assets acquired in the Omnipoint merger (see Note 3), and is being amortized
over a useful life of 20 years. Licensing costs, including those acquired from
Omnipoint, are amortized over a useful life of 40 years.


   Supplemental cash flow disclosure

   Cash paid for interest (net of amounts capitalized) was $8.7 million for the
three months ended March 31, 2000 and $12.7 million for the same period in 1999.


   Reclassifications

   Certain amounts in prior period financial statements have been reclassified
to conform to the 2000 presentation.

                                       4

<PAGE>   6

                        VOICESTREAM WIRELESS CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Unaudited)

2.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED):

   Recently issued accounting pronouncements:

   In June 1998, the Financial Accounting Standards Board issued SFAS No. 133,
"Accounting for Derivative Instruments and Hedging Activities." It requires the
recognition of all derivatives as either assets or liabilities and the
measurement of those instruments at fair value. The implementation of SFAS No.
133 is not expected to have a material impact on our financial position or
results of operations. SFAS No. 137, "Accounting for Derivative Instruments and
Hedging Activities -- Deferral of the Effective Date of FASB Statement No. 133",
issued in August 1999, postpones for one year the mandatory effective date for
adoption of SFAS No. 133 to January 1, 2001.

   In December 1999, the Securities and Exchange Commission ("SEC") issued Staff
Accounting Bulletin Number 101, "Revenue Recognition in Financial Statements."
This bulletin will become effective for the issuance of VoiceStream's June 30,
2000, quarterly financial statements. This bulletin establishes more clearly
defined revenue recognition criteria than previously existing accounting
pronouncements, and specifically addresses revenue recognition requirements for
non-refundable fees, such as activation fees collected by a company upon
entering into an arrangement with a customer, such as an arrangement to provide
telecommunication services. VoiceStream is currently evaluating the full impact
of this bulletin to determine the impact on its financial position and results
of operations.

   In March 2000, the Financial Accounting Standards Board (FASB) released FASB
Interpretation No. 44, "Accounting for Certain Transactions involving Stock
Compensation, an interpretation of APB Opinion No. 25," which provides
clarification of Opinion 25 for certain issues such as the determination of an
employee, the criteria for determining whether a plan qualifies as a
non-compensatory plan and the accounting consequences of various modifications
to the terms of a previously fixed stock option or award. We believe that our
practices are in conformity with this guidance, and therefore Interpretation No.
44 will have no impact on the Company's financial statements.


3.  OMNIPOINT CORPORATION MERGER:

   On February 25, 2000, we completed the merger with Omnipoint and accordingly,
subsequent to this date, Omnipoint results are included in VoiceStream's
consolidated results. Omnipoint provides PCS services in urban markets primarily
in the eastern United States. The merger was accounted for using the purchase
method. Pursuant to the agreement, we exchanged 0.825 of a share of VoiceStream
common stock plus $8.00 in cash for every share of outstanding Omnipoint common
stock. In conjunction with the merger agreement, we committed to invest a total
of $150.0 million in Omnipoint, of which $102.5 million was invested in
Omnipoint preferred stock upon signing of the merger agreement in June 1999. The
remaining $47.5 million was invested in Omnipoint preferred stock on October 1,
1999.

   In connection with the Omnipoint merger agreement, Hutchison
Telecommunications PCS (USA) ("Hutchison") made an investment of $957.0 million
into the combined company for common and redeemable convertible preferred
securities. $102.5 million of this investment was invested directly in Omnipoint
preferred stock subsequent to finalizing the merger agreement in June 1999. In
addition, another $47.5 million was invested in Omnipoint preferred stock in
October 1999. The remaining $807.0 million was invested into VoiceStream upon
the closing of the merger. Also upon completion of the merger, Hutchison
exchanged its $150 million investment in Omnipoint preferred stock for common
stock of VoiceStream at $29 per share. Additionally, Sonera, Ltd, ("Sonera") a
Finnish telecommunications company, who holds an investment in Aerial Operating
Company ("AOC"), a subsidiary of Aerial, invested $500.0 million in VoiceStream
at the closing of the Omnipoint merger, purchasing VoiceStream common shares at
$57 per share.

                                       5
<PAGE>   7
                        VOICESTREAM WIRELESS CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Unaudited)

3.  OMNIPOINT CORPORATION MERGER (CONTINUED)

   The components of the purchase price and the preliminary allocation are as
follows (in thousands, except share data):

<TABLE>
<CAPTION>

<S>                                                                         <C>
  Consideration and merger costs:
      Total value of shares issued in merger (a)                            $1,538,000
      Cash payments                                                            627,000
      Fair value of options and warrants converted                             859,000
      Fair value of liabilities assumed inclusive of minority interest       3,200,000
      Merger related costs                                                      19,000
      Cook Inlet exchange rights                                                28,000
                                                                            ----------
                   Subtotal                                                 $6,271,000

  Preliminary allocation of purchase price:
      Current assets                                                           175,000
      Property, plant and equipment                                            473,000
      Investments in unconsolidated affiliates                                 565,000
      Licenses and other intangibles                                           929,000
                                                                            ----------
                  Preliminary goodwill                                      $4,129,000
                                                                            ==========
</TABLE>

        (a)The total number of VoiceStream shares issued in conjunction with the
merger was 52,952,399.

   The above allocation reflects the estimated fair value of assets and
liabilities acquired as of the date of acquisition. Some allocations are based
on valuations which are currently being finalized. Management does not believe
that the final purchase price allocation will produce materially different
results than those reflected above.

   Unaudited pro forma operating results, assuming the merger with Omnipoint
occurred on January 1 of each of the respective years are as follows:


<TABLE>
<CAPTION>


      (In thousands, except per share data)                          THREE MONTHS ENDED MARCH 31
                                                                      2000                 1999
                                                                 --------------       --------------
<S>                                                              <C>                  <C>
      Total revenues                                             $      351,671       $      128,288
      Net loss                                                   $     (373,918)      $     (282,739)
      Basic and diluted loss per common share                    $        (2.34)      $        (1.78)
</TABLE>



4.   PROPERTY AND EQUIPMENT:

<TABLE>
<CAPTION>

      (In thousands)                      MARCH 31        DECEMBER 31,
                                            2000             1999
                                         ----------       ------------
<S>                                      <C>              <C>
  Land, buildings, and improvements      $   47,886      $      24,590
  Wireless communications systems         1,249,141            849,148
  Furniture and equipment                   177,354            109,576
                                         ----------       ------------
                                          1,474,381           983,314
  Less accumulated depreciation            (343,462)          (284,670)
                                         ----------       ------------
                                          1,130,919            698,644
  Construction in progress                  370,480            233,148
                                         ----------       ------------
                                         $1,501,399       $    931,792
                                         ==========       ============
</TABLE>

   Depreciation expense was $58.2 million during the three months ended March
31, 2000 and $22.9 million for the same period in 1999.

                                       6
<PAGE>   8
'                        VOICESTREAM WIRELESS CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Unaudited)

5.  INVESTMENTS IN AND ADVANCES TO UNCONSOLIDATED AFFILIATES:

   Cook  Inlet VoiceStream PV/SS PCS, LP

   A subsidiary of VoiceStream holds a 49.9% interest in Cook Inlet VoiceStream
PV/SS PCS, LP ("Cook Inlet PCS"). VoiceStream funded the operations of Cook
Inlet PCS during the three months ended March 31, 2000 through loans evidenced
by promissory notes which are due 180 days after the date of issuance. The
weighted average interest rate was 15% for the first quarter 2000. All
promissory notes that have come due were replaced with new promissory notes. The
total investment in Cook Inlet PCS, including advances under such promissory
notes, was $118.5 million at March 31, 2000 and $124.6 million at December 31,
1999.

   Cook Inlet/VoiceStream PCS, LLC

   A subsidiary of VoiceStream holds a 49.9% interest in Cook Inlet/VoiceStream
PCS, LLC ("CIVS"). This entity owns, among others, the Dallas and Chicago FCC
BTA licenses. In January 2000, CIVS reached an agreement with an infrastructure
equipment vendor providing CIVS with credit facilities up to $735 million,
composed of a $160 million revolving credit agreement, term loans of up to $325
million, consisting of $125 million in Tranche A and $200 million in Tranche B,
$100 million of 13% Series A Senior Discount Notes, and up to $150 million of
13% Series A Subordinated Notes. These facilities are not guaranteed by
VoiceStream but are secured by certain assets of CIVS. The net proceeds will be
used to finance capital expenditures, permitted investments, and for working
capital. The amount available for borrowing pursuant to the senior credit
facilities, consisting of the revolver and term loans, is based upon certain
equipment purchases by CIVS up to the maximum $485 million available.

   Cook  Inlet/VoiceStream PCS II and III, LLC

   Under the Designated Entity rules set forth by the FCC, VoiceStream can not
own or operate C and F Block licenses. Omnipoint's C and F Block licenses,
assets and liabilities associated with these licenses and operations were
transferred to two new joint venture entities controlled by Cook Inlet.
VoiceStream has accounted for this transfer of non-monetary assets as an
investment at VoiceStream's historical cost, which equates to the fair value of
these assets and liabilities as the result of the purchase accounting performed
for the merger. The excess purchase price attributed to these assets has been
allocated between license costs and goodwill and is being amortized into the
loss of unconsolidated affiliates over 40 and 20 years, respectively. Each of
these joint venture entities, Cook Inlet/VoiceStream GSM II PCS, LLC ("CIVS II")
and Cook Inlet/VoiceStream GSM III PCS, LLC ("CIVS III"), qualify as a
Designated Entity.

   Cook Inlet has contributed a total of $75 million in cash to these joint
venture entities for its 50.1% ownership and exchange rights. Immediately prior
to the merger, Omnipoint contributed a combination of non-cash assets and
liabilities for its 49.9% ownership. Cook Inlet holds the majority of voting
power in each of these joint venture entities. As part of this transaction, Cook
Inlet has certain rights, but not the obligation, to exchange its joint venture
interests for a total of 3,750,000 shares of VoiceStream common stock for a 30
day period beginning after the FCC regulatory holding period has expired
(currently five years after the issuance date of the licenses held by CIVS II
and CIVS III). For CIVS II, this date is in the second quarter of 2002, and for
CIVS III in the fourth quarter of 2004. These rights are conditioned upon the
FCC's Designated Entity rules and VoiceStream's legal ability to own the C and F
Block licenses at the time of the exchange under such rules.

   In July 1997, and subsequently amended in June 1999 and thereafter, Omnipoint
through its wholly-owned subsidiary OPCS Philadelphia Holdings LLC (Philadelphia
Holdings) entered into a credit facility agreement with Ericsson to provide
financing to Philadelphia Holdings for up to $150 million for the purpose of
financing the build out of networks in the Philadelphia and Dover markets. On
May 4, 2000 CIVS II through Philadelphia Operating Company (Philadelphia
Operating), a wholly-owned subsidiary of Philadelphia Holdings, entered into a
$350 million refinance agreement with Ericsson (New Ericsson Credit Facility)
for the purpose of financing the continued build out of networks and the
operations of the Philadelphia, Atlantic City and Dover markets. Under the terms
of the New Ericsson Credit Facility, Philadelphia Operating is subject to
certain financial and operational covenants, including restrictions on levels of
indebtedness, minimum annualized revenues and cash flows and certain other
financial maintenance requirements. Additionally, the New Ericsson Credit
Facility provides that, among other events, failure to pay amounts due to the
FCC shall constitute an event of default. The New Ericsson Credit Facility is
collateralized by substantially all of the assets of Philadelphia Operating and
its license subsidiaries, including a pledge of all capital stock of each
license subsidiary.

                                       7

<PAGE>   9
                        VOICESTREAM WIRELESS CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Unaudited)

5.  INVESTMENTS IN AND ADVANCES TO UNCONSOLIDATED AFFILIATES (CONTINUED):

   The New Ericsson Credit Facility consists of a revolving credit facility of
up to $150 million and a $200 million term loan. The term loan was drawn at
closing. A portion of the term loan draw was used to repay the Philadelphia
Holdings credit facility. Under the terms of the agreement, the lender may elect
to subordinate the revolving portion of the facility to the term loan. The
principal amount of the New Ericsson Credit Facility is payable in quarterly
installments beginning in 2004, with a final payment for the revolving portion
of the facility due on March 31, 2008 and the final payment for the term loan
due on March 31, 2009. Interest on the outstanding principal is generally
payable quarterly in arrears with regard to base rate loans and at the end of
the applicable interest period with regard to LIBOR loans (of which a portion of
the loan proceeds are available to finance such interest payments). Interest on
the New Ericsson Credit Facility is payable at varying interest rates at a base
rate or LIBOR plus, in each case, a set margin and commitment fee based on
Philadelphia Operating's revolver utilization rate. The New Ericsson Credit
Facility may be repaid in whole or in part in minimum amounts of $2 million
without a premium.

   Microcell investment

   On February 28, 2000, VoiceStream completed the purchase of 9,590,000 newly
issued Class A shares of Microcell Telecommunications Inc. ("Microcell"), a
Canadian GSM operator for approximately $275 million. The per share transaction
price was equal to the closing market price of Microcell's publicly traded Class
B Non-Voting shares on the Nasdaq National Market System on January 6, 2000.

   The Class A shares constitute approximately 15% of the issued and outstanding
equity securities of Microcell. Class A shares are non-voting but are
convertible at any time into common shares, which are voting (subject to
Canadian foreign ownership restrictions). If fully converted, these common
shares would represent a 22.6% voting interest in Microcell. Additionally,
VoiceStream is entitled to designate two members of Microcell's Board of
Directors. The investment is being accounted for using the equity method.


6.  LONG-TERM DEBT:

<TABLE>
<CAPTION>

       (In thousands)                                    MARCH 31,         DECEMBER 31,
                                                           2000                1999
                                                      -------------       -------------
<S>                                                   <C>                 <C>
  Previous credit facility:
      Revolver                                                            $     250,000
      Term loan                                                                 250,000
  Term loans under new credit facility                $   1,900,000
  10 3/8 % Senior Notes                                   1,100,000           1,100,000
  11 7/8 % Senior Discount Notes                            720,000             720,000
  11 5/8% Senior Notes and Series A Senior Notes            450,000
  14% Senior Notes                                          142,800
  11 1/2% Senior Notes                                      205,000
  FCC license obligation                                    124,835
                                                      -------------       -------------
                                                          4,642,635           2,320,000
  Less unamortized discount and premium, net               (294,554)           (308,549)
  Less current portion of long-term debt                   (124,836)
                                                      -------------       -------------
                                                      $   4,223,245       $   2,011,451
                                                      =============       =============
</TABLE>

    On February 25, 2000, immediately following the completion of the Omnipoint
merger, VoiceStream entered into a new credit facility with a consortium of
lenders. Pursuant to the new credit facility, the lenders have made available
revolving credit loans and term loans in an aggregate principal amount not to
exceed $3.25 billion. The revolving credit portion of the new credit facility is
a $1.35 billion reducing revolving credit. Immediately following the completion
of the Omnipoint merger, VoiceStream used the proceeds of draws on the new
credit facility to repay certain long-term debt of Omnipoint. Additionally, a
portion of the cash equity investments received from Hutchison and Sonera,
described in Note (3), were used to pay off the remaining balance on the
previous credit facility.

                                       8


<PAGE>   10
                        VOICESTREAM WIRELESS CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Unaudited)

6.   LONG-TERM DEBT (CONTINUED):

   The availability of the revolving credit portion of the new credit facility
declines over the period commencing three years after the closing date through
the eighth anniversary of the closing date in the following percentages: 10% in
year four, 15% in year five, 20% in year six, 20% in year seven and 35% in year
eight. The term loan portion of the new credit facility is comprised of a $900
million Tranche A and a $1 billion Tranche B. Tranche A is required to be
amortized at the same rate that the availability under the revolving credit
portion of the new credit facility reduces with a final maturity on the eighth
anniversary of the closing date. Tranche B is required to be amortized in the
following amounts during the period commencing three years after the closing
date through the ninth anniversary: $10 million in each of years four through
eight and the remaining balance in year nine.

   Borrowings under Tranche A bear interest, at VoiceStream's option, at an
annual rate of interest equal to either (1) the greater of (a) the prime rate,
or (b) the Federal Funds rate plus 1/2%, or (2) a Eurodollar rate, in each
instance plus an applicable margin. Such applicable margin will range to a
maximum of 1.50%, in the case of loans based on the prime rate or Federal Funds
rate, and to a maximum of 2.75%, in the case of loans based on a Eurodollar
rate, in each case based upon certain factors including the ratio of total
indebtedness to operating cash flow, as defined in the new credit facility.

   Tranche B bears interest, at VoiceStream's option, at an annual rate of
interest equal to either (1) the greater of (a) the prime rate, or (b) the
Federal Funds rate plus 1/2%, or (2) a Eurodollar rate, plus an applicable
margin. Such applicable margin is a fixed percentage of 1.75%, in the case of
loans based on the prime rate or Federal Funds rate, and 3.0% in the case of
loans based on a Eurodollar rate.

   The new credit facility contains affirmative and negative covenants, with
which VoiceStream must comply, including financial covenants, and provides for
various events of default. The repayment of the loans is secured by, among other
things, the grant of a security interest in the capital stock and assets of
VoiceStream and certain of its subsidiaries.

   The new credit facility permits up to $1.5 billion of additional
indebtedness, including up to $1 billion for a vendor facility, which would
become part of the new credit facility, by amendment, subject to the same
covenants and secured by the same collateral. On April 28, 2000, we entered into
a vendor facility with an infrastructure equipment vendor and a bank that
provides up to $1 billion in senior credit facilities and VoiceStream has agreed
to acquire certain equipment, software and services from the vendor. The vendor
facility has a maturity of 9.25 years and is available in multiple draws,
including $500 million that was drawn on April 28, 2000, $250 million that can
be drawn by July 14, 2000, and $250 million that can be drawn by October 31,
2000. Net proceeds of the vendor facilities will be used for the same purposes
as other proceeds under the new credit facility.

   Certain long-term debt agreements of Omnipoint, and now of VoiceStream,
contain provisions which require us to offer repayment of outstanding amounts
when a change of control occurs. The Omnipoint merger constituted a change of
control. Additionally, the holders of the debt issued under certain of these
agreements were entitled to a prepayment premium. In accordance with the
provisions of such long-term debt, we offered to purchase, at 101% of the
principal amount, the 11.625% Senior Notes due 2006 and the 11.625% Series A
Notes due 2006. The offer to purchase expired on April 28, 2000. Notes
representing $343,000 of the combined principal amount were redeemed by
note holders.

   The credit facility requires VoiceStream to enter into interest rate swap and
cap agreements to manage the interest rate exposure pertaining to borrowings
under the credit facility. VoiceStream had entered into interest rate caps and
swaps with a total notional amount of $325.0 million at March 31, 2000.
Generally these instruments have initial terms ranging from 1 to 4 years and
effectively convert variable rate debt to fixed rate. The weighted average
interest rate under these agreements was approximately 6.06% during the three
months ended March 31, 2000. The amount of unrealized gain or loss attributable
to changing interest rates at March 31, 2000 was not material.

   The aggregate amounts of principal maturities of VoiceStream's long-term debt
at March 31, 2000, are as follows (in thousands):


       Nine months ending December 31, 2000                   $  92,723
       Year ending December 31,


                                       9
<PAGE>   11
                        VOICESTREAM WIRELESS CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  (Unaudited)

<TABLE>
<CAPTION>


<S>                                                           <C>
        2001                                                       32,112
        2002                                                            0
        2003                                                      242,800
        2004                                                      145,000
  Thereafter                                                    4,130,000
                                                              -----------
                                                              $ 4,642,635
                                                              ===========
</TABLE>

7.    COMMITMENTS:

    Future minimum payments required under operating leases and agreements that
have initial or remaining noncancellable terms in excess of one year as of March
31, 2000, are summarized below (in thousands):

<TABLE>
<CAPTION>

<S>                                                           <C>
  Nine months ending December 31, 2000                        $    87,036
  Year ending December 31,
       2001                                                       110,576
       2002                                                       102,474
       2003                                                        95,851
       2004                                                        87,477
  Thereafter                                                      192,567
                                                              -----------
                                                              $   675,981
                                                              ===========
</TABLE>


   Aggregate rental expense for all operating leases was approximately $27.5
million during the three months ended March 31, 2000, and $6.8 million for the
same period in 1999.

   In order to ensure adequate supply and availability of certain infrastructure
equipment requirements and service needs, VoiceStream has committed to purchase
PCS equipment from various suppliers. The aggregate amount of these commitments
total approximately $1,247 million. At March 31, 2000, VoiceStream has ordered
approximately $697 million under all of these agreements, of which approximately
$37 million is undelivered. In April 2000, VoiceStream committed to purchase an
additional $300 million of similar PCS equipment from a supplier.

   VoiceStream and its affiliates have various other purchase commitments for
materials, supplies and other items incident to the ordinary course of business
which are neither significant individually nor in the aggregate. Such
commitments are not at prices in excess of current market value.

   Contingencies:

   As a result of the Omnipoint and Aerial mergers, VoiceStream may have to make
substantial tax indemnity payments to Western Wireless. In the spin-off
transaction effected on May 3, 1999, Western Wireless distributed its entire
80.1% interest in VoiceStream's common stock to its stockholders. Western
Wireless will recognize gain as a result of the spin-off, if the spin-off is
considered to be part of a plan or series of related transactions pursuant to
which one or more persons acquire, directly or indirectly, 50% or more of
VoiceStream's common stock, considered under IRS rules a "prohibited
transaction". VoiceStream has agreed to indemnify Western Wireless on an
after-tax basis for any taxes, penalties, interest and various other expenses
incurred by Western Wireless if it is required to recognize such a gain. The
amount of such gain that Western Wireless would recognize would be equal to the
difference between the fair market value of VoiceStream common stock at the time
of the spin-off and Western Wireless' adjusted tax basis in such stock at the
time.

   In the absence of direct authority, and although the issue is not free from
doubt, VoiceStream believes that it should be able to establish that the
spin-off and VoiceStream Delaware's acquisitions of VoiceStream's stock pursuant
to the mergers, in conjunction with the related transactions and Hutchison's
acquisition of its existing VoiceStream stock within two years prior to the
spin-off, are not pursuant to a prohibited plan. However, if the IRS were to
take the position that a prohibited plan did occur, the estimated range of
possible liability of VoiceStream, not including interest and penalties, if any,
is from zero to $400 million.

   Fourteen of the C Block licenses won by CIVS were issued subject to the
outcome of the bankruptcy proceedings of the original licensee. Pursuant to an
FCC order, the bankruptcy debtors elected to relinquish certain licenses, which
were subsequently reauctioned. A secured creditor of the debtors, filed with the
court a motion for reconsideration of

                                       10
<PAGE>   12
                        VOICESTREAM WIRELESS CORPORATION
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Unaudited)


the election order, which was denied. An appeal of this denial is currently
before the U. S. District Court of Northern Maryland. Because the appeal of the
election order is still pending, there is uncertainty as to these C Block
licenses of the Cook Inlet entities. In the event that these licenses are
returned to the jurisdiction of the bankruptcy court, it is unlikely that the
Cook Inlet entities will be able to recoup any or all of the costs incurred by
them in connection with the construction and development of systems related to
such licenses.


8.  RELATED PARTY TRANSACTIONS:

   Cook Inlet Partners

   VoiceStream and the Cook Inlet Partners have entered into reciprocal
technical services agreements which allow each to utilize airtime on the other's
spectrum, and/or utilize wireless system infrastructure, in certain agreed upon
markets. The agreements are structured such that each performs as a reseller for
the other and related fees are charged and paid between the parties. During the
three months ended March 31, 2000, we earned revenues of $16.9 million and
incurred expenses of $19.5 million related to these agreements. During the three
months ended March 31, 1999, we earned revenues of $0.9 million and incurred
expenses of $1.0 million.

                                       11
<PAGE>   13


                                   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.


                        VoiceStream Wireless Corporation

By /s/ Cregg Baumbaugh                        By /s/ Allyn Hebner
   --------------------------------              ------------------------------
Cregg Baumbaugh                               Allyn P. Hebner
Executive V.P. - Finance/ Corporate           Vice President and Controller and
Development (Principal Financial              Principal Accounting Officer
Officer)






                            Dated: November 30, 2000


                                       12