Document:

EXHIBIT 10.1

                              EMPLOYMENT AGREEMENT
                                      WITH
                                DAVID S. GERGACZ

      This Agreement, effective as of April 17, 2000, by and between U.S. Mobile
Services, Inc., a Delaware Corporation having a place of business at 725 Primera
Blvd., Suite 200, Lake Mary, Florida (the "Corporation"), and David Gergacz, an
individual residing at 264 Snowfields Run, Heathrow, Florida (the "Employee").

                                   WITNESSETH:

      WHEREAS, the Corporation desires to employ the Employee as Chairman of its
Board of Directors and Chief Executive Officer to perform work for the
Corporation. The Employee desires to be employed by the Corporation pursuant to
the terms and conditions hereinafter set forth;

      NOW, THEREFORE, in consideration of the foregoing as well as the mutual
promises and covenants herein contained, it is hereby agreed as follows:

1. EMPLOYMENT; DUTIES

      (a) The Corporation engages and employs the Employee, and the Employee
hereby accepts engagement and employment, as Chairman of the Corporation's Board
of Directors and Chief Executive Officer for the Corporation, and Employee
hereby accepts such retention by the Corporation, to undertake such services as
the Corporation shall reasonably request in connection with the Corporation's
business.

      (b) The Employee shall perform his duties hereunder from the Corporation's
offices in Lake Mary, Florida.

      (c) The Employee shall devote such of his time and efforts as he shall
deem necessary to properly discharge his duties and responsibilities under this
Agreement.

2. TERM

      The Employee's employment hereunder shall be for a term commencing on
April 17, 2000 and continuing through April 16, 2003, unless sooner terminated
as hereinafter provided. If Employee remains as an Employee subsequent to the
term mentioned above, said employment would be under a new agreement to be
negotiated at that time. Such agreement to provide terms equal to or better than
this Agreement.

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3. COMPENSATION

      (a) As compensation for the performance of his duties on behalf of the
Corporation, the Corporation shall pay the Employee a base salary ("Base
Salary") of $300,000 per year, and at least $350,000 per year for the second 12
months of payments, and such equal or greater amount subsequently as may be
determined by the Board of Directors, payable in equal installments on a
bi-monthly basis in arrears. The Corporation shall withhold all applicable
federal, state and local taxes, social security and worker's compensation
contributions and such other amounts as may be required by law or agreed upon by
the parties with respect to the compensation payable to the Employee pursuant to
this section 3 (a) hereof.

      (b) Employee received non-qualified stock options to purchase 1,747,253
shares of capital stock of the Company at $.01 per share as a consultant. The
aforementioned stock options allowed the Employee to acquire a 15% equity
position in the Company. The non qualified stock options vested as follows:

           1/3 on May 1 1999;
           1/3 on November 1, 1999;
           1/3 on May 1, 2000.

Mr. Gergacz's 15% equity position was protected from dilution under the previous
agreement until the company raised approximately $20 Million in a public
offering. This provision will remain in effect as a part of this agreement. The
additional options issued to offset any dilution up to and until the public
offering is completed, will vest immediately.

In consideration for this agreement the remaining 1/3 of the shares to be vested
on May 1, 2000 will now vest as of the date of this agreement.

      (c) As additional consideration for this agreement Mr. Gergacz will
receive non-qualified stock options to purchase 1,000,000 shares of capital
stock of the Company at $.01 per share. Such options to vest as of the date of
this agreement.

      (d) In the event of a change of control, any unvested options held by Mr.
Gergacz shall vest immediately. For purposes hereof, "change of control" shall
mean the consummation by USM of a merger with another entity, or the sale of 50%
or more of the assets of the then outstanding shares of USM's capital stock

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      (e) The Corporation shall reimburse the Employee for all normal, usual and
necessary expenses incurred by the Employee in furtherance of the business and
affairs of the Corporation against receipt by the Corporation of appropriate
vouchers or other proof of the Employee's expenditures and otherwise in
accordance with such Expense Reimbursement Policy as may from time to time be
adopted by the Board of Directors of the Corporation.

      (f) The Employee shall accrue paid vacation at the rate of twenty (20)
business days per annum.

      (g) The Corporation shall provide to the Employee and his spouse and
dependents, at the Corporation's expense, benefits of the type generally
available to the executives of similar companies, including but not limited to,
medical, life, dental, and disability insurance.

      (h) The Corporation shall provide to the Employee a monthly car allowance
not to exceed six hundred and fifty dollars ($650.00) per month. The Corporation
shall also provide reimbursement for gasoline, repairs and insurance with
respect to Employee's vehicle.

      (i) The expense reimbursements and benefits mentioned in paragraphs 3 (c),
3(d), 3(e) and 3(f) above shall begin on the date of this Agreement.

      (j) The Employee will be entitled to participate in an annual bonus
program that will be initially targeted at 100% of his annual compensation based
on criteria established in a separate bonus plan. The employee will also be
entitled to participate in any stock option plan administered by the company.

4. RERESENTATIONS AND WARRANTIES BY THE EMPLOYEE AND CORPORATION

      The employee hereby represents and warrants to the Corporation as follows:

      (a) Neither the execution and delivery of this Agreement nor the
performance by the Employee of his duties and other obligations hereunder
violate or will violate any statute, law, determination or award, or conflict
with or constitute a default under (whether immediately, upon the giving of
notice or lapse of time or both) any prior employment agreement, contract, or
other instrument to which the Employee is a party or by which he is bound.

      (b) The Employee has the full right, power and legal capacity to enter and
deliver this Agreement and to perform his duties and other obligations
hereunder. This Agreement constitutes the legal, valid and binding obligation of
the Employee enforceable against him in accordance with its terms. No approvals

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or consents of any persons or entities are required for the Employee to execute
and deliver the Agreement or perform his duties and other obligations hereunder.

      The Corporation hereby represents and warrants to the Employee as follows:

      (a) The Corporation is duly organized, validly existing and in good
standing under the laws of the State of Delaware, with all requisite corporate
power and authority to own its properties and conduct its business in the manner
presently contemplated.

      (b) The Corporation has full power and authority to enter into this
Agreement and to incur and perform its obligations hereunder.

      (c) The execution, delivery and performance by the Corporation of this
Agreement does not conflict with or result in a breach or violation of or
constitute a default under (whether immediately, upon the giving of notice or
lapse of time or both) the certificate of incorporation or by-laws of the
Corporation, or any agreement or instrument or by-laws of the Corporation.

      (d) The Corporation does not now contemplate and will not in the future
require the performance by the Employee of acts that would conflict with his
obligations to any former employer or under applicable law.

      (e) The Corporation will indemnify Employee with respect to his personal
liability for acts performed on behalf of the Corporation. This shall
specifically include indemnification for all prior liability or acts of the
company prior to his employment.

5. CONFIDENTIAL INFORMATION

      (a) The Employee agrees that during the course of his employment or at any
time after termination, he will not disclose or make accessible to any other
person, the Corporation's products, services and technology, both current and
under development, promotion and marketing programs, lists, trade secrets and
other confidential and proprietary business information of the Corporation or
any of its clients. The Employee agrees: (i) not to use any such information for
himself or others; (ii) not to take any such material or reproductions thereof
from the Corporation's facilities at any time during his employment by the
Corporation, except as required in the Employee's duties to the Corporation. The
Employee agrees immediately to return all such material and reproductions
thereof in his possession to the Corporation upon request and in any event upon
termination of employment.

      (b) Except with prior written authorization by the Corporation, the
Employee agrees not to disclose or publish any of the confidential, technical or

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business information or material of the Corporation, its clients or any other
party to whom the Corporation owes an obligation of confidence, at any time
during or after his employment with the Corporation.

      (c) Specifically excluded from this provision, is the intellectual
property the employee brought to the company to develop its computer operating
systems. Such intellectual property will remain the sole property of the
employee.

6. COVENANT NOT TO COMPETE

      The Employee hereby agrees not to compete with the Corporation while
employed by the Corporation as well as its lawful successors and assigns. The
term "not to compete" as used herein shall mean that the Employee shall not
directly or indirectly engage in a business or other activity associated with
prepaid wireless services;

Further, the Employee agrees not to compete for a period of one (1) year from
the date of termination of this Agreement in any market in which the Corporation
is then conducting business. In the event of any breach of this paragraph, the
Company shall be entitled to full injunctive relief without the need to post
bond, which rights shall be cumulative with and not necessarily successive or
exclusive of any other legal rights, that the Corporation may have.

7. TERMINATION

      (a) The Employee's employment hereunder began on April 17, 2000 and shall
continue for the period set forth in Section 2 hereof unless sooner terminated
upon the first to occur of the following events:

            (i) The death of the Employee or the disability of the Employee, as
defined below;

            (ii) Termination of the Employee by the Board of Directors of
Corporation for just cause. Any of the following actions by the Employee shall
constitute just cause for termination:

                  (a) Material breach by the Employee of Section 5 or section 6
of this Agreement;

                  (b) Material breach by the Employee of any provision of this
Agreement other than Section 5 or section 6 which is not cured by the Employee
within thirty (30) days following written notice thereof from the Corporation;

                  (c) Any action by the Employee to intentionally harm the
Corporation;

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                  (d) Conviction of Employee of a felony involving crimes of
falsehood or moral turpitude.

                  (e) Willful act of fraud or malfeasance by Employee with
respect to the Corporation.

            (iii) Termination by the Employee for just cause. Any of the
following actions or omissions by the Corporation shall constitute just cause:

                  (a) Material breach by the Corporation of any provision of
this Agreement which is not cured by the Corporation within fifteen (15) days
following written notice thereof from the Employee; or

                  (b) Any action by the Corporation to intentionally harm the
Employee.

      (b) Upon termination pursuant to subparagraph (i) or (ii) of paragraph (a)
above, the Employee shall not be entitled to receive any additional compensation
for the term of the Agreement.

      (c) Upon termination by the Corporation for any reason other than the
reasons set forth in subparagraph (i) or (ii) of paragraph (a) above or an
election by the Corporation not to renew this Agreement, or upon termination by
the Employee for any reason set forth in subparagraph (iii) of paragraph (a)
above, then the Corporation shall continue to pay the Employee, as the
Employee's sole damages for such termination, the Base Salary and previous
year's cash bonus that would have accrued for a period of twelve (12) months
following termination (hereinafter the "Severance Period"). In addition, the
Employee shall be entitled to all health and other benefits described in
paragraphs 3(d) and 3(e) above until the earlier of (i) the end of the Severance
Period or (ii) the date on which the Employee became entitled to health and
other benefits provided by a new employer. Employee will have six months to
exercise all vested options to purchase capital stock of the Company.

      (d) The Employee shall have no duty to mitigate the Corporation's
obligations hereunder by seeking any other employment or consulting arrangements
during the Severance Period. If during the Severance Period the Employee becomes
entitled to health and other benefits provided by a new employer or contractor
at such new employer or contractor's expense, the Employee agrees to inform the
Corporation promptly of such entitlement and to cooperate with the Corporation
in terminating the Employee's coverage under the Corporation's benefit plan.

      (e) For purposes of this Agreement, the "disability" of the Employee shall
be deemed to have occurred if, as a result of any injury, sickness or physical

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condition, the Employee is unable to perform his duties hereunder (excluding any
accrued vacation), for a period of thirty (90) days during any calendar year.

8. NOTICES

      Any notice or other communication under this Agreement shall be in writing
and shall be deemed to have been given: when delivered personally against
receipt therefore; one (1) day after being sent by Federal Express or similar
overnight delivery; or three (3) days after being mailed registered or certified
mail, postage prepaid, return receipt requested, or one (1) day after being sent
telecopier (with mechanical telecopier confirmation of receipt), to either party
at the address set forth above, or to such other address as such party shall
give by notice hereunder to the other party.

9. SEVERABILITY OF PROVISIONS

      If any provision of this Agreement shall be declared by a court of
competent jurisdiction to be invalid, illegal or incapable of being enforced in
whole or in part, the remaining conditions and provisions or portions thereof
shall nevertheless remain in full force and effect and enforceable to the extent
they are valid, legal and enforceable, and no provision shall be deemed
dependent upon any other covenant or provision unless so expressed herein.

10. ENTIRE AGREEMENT; MODIFICATION

      This Agreement contains the entire agreement of the parties relating to
the subject matter hereof and any previous agreement relating to Employee's
Employment by the Corporation are hereby considered null and void and of no
further force and effect, and the parties hereto have made no agreements,
representations or warranties relating to the subject matter of this Agreement
which are not set forth herein. No modification of this Agreement shall be valid
unless made in writing and signed by the parties hereto.

11. BINDING EFFECT

      The rights, benefits, duties and obligations under this Agreement shall
inure to, and be binding upon, the Corporation, its successors and assigns, and
upon the Employee and his legal representatives. This Agreement constitutes a
personal service agreement, and the performance of the Employee's obligations
hereunder may not be transferred or assigned by the Employee.

12. NON-WAIVER

      The failure of either party to insist upon the strict performance of any
of the terms, conditions and provisions of this Agreement shall not be construed
as a waiver or relinquishment of future compliance therewith, and said terms,

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conditions and provisions shall remain in full force and effect. No waiver of
any term or condition of this Agreement on the part of either party shall be
effective for any purpose whatsoever unless such waiver is in writing and signed
by such party.

13. GOVERNING LAW

      This Agreement shall be governed by, and construed and interpreted in
accordance with, the laws of the State of Florida without regard to the
principles of conflict of laws.

14. HEADINGS

      The headings of paragraphs are inserted for convenience and shall not
affect any interpretation of this Agreement.

15. ATTORNEYS FEES, COSTS

      In the event a party breaches this Agreement, the breaching party shall
pay all costs and attorneys' fees incurred by the other party in connection with
such breach, whether or not any litigation is commenced.

IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the
day and year first above written.

                          U.S. MOBILE SERVICES, INC. (Corporation)

                          /s/ David Gergacz
                          ----------------------------------------

                          Employee

                          /s/ David Gergacz
                          ----------------------------------------

                                       8EXHIBIT 10.3

                           U.S. MOBILE SERVICES, INC.
                                      FORM
                                       OF
                             2000 STOCK OPTION PLAN

SECTION 1. PURPOSE

      The purpose of the U.S. Mobile Services, Inc. Stock Option Plan (the
"Plan") is to provide an additional incentive to Eligible Persons and Employees
(as defined in Section 2) of U.S. Mobile Services, Inc. (the "Company") and its
subsidiaries, to aid in attracting and retaining Eligible Persons and Employees
of outstanding ability, and to align their interests with those of shareholders.

SECTION 2. DEFINITIONS

      Unless the context clearly indicates otherwise, the following terms, when
used in this Plan, shall have the meanings set forth in this Section 2.

      "Board" shall mean the Board of Directors of the Company.

      "Code" shall mean the Internal Revenue Code of 1986 and the rules and
regulations thereunder, as it or they have been amended from time to time.

      "Committee" shall mean the full Board, Compensation Committee of the Board
or such other committee as may be designated by the Board. If less than the full
Board, the Committee shall consist of two or more members of the Board who are
not eligible to participate in the Plan, and who otherwise are "non-employee
directors" under Rule 16b-3.

      "Date of Exercise" shall mean the earlier of the date on which written
notice of exercise, together with payment in full, is received at the office of
the Secretary of the Company or the date on which such notice and payment are
mailed to the Secretary of the Company at its principal office by certified or
registered mail.

      "Eligible Person" shall mean any person or entity that is an agent,
consultant, director, independent contractor, strategic alliance partner, or
supplier of the Company. An Eligible Person shall not be awarded Incentive Stock
Options. An Eligible Person who is a director but not an Employee shall not be
awarded Stock Options.

      "Employee" shall mean any common law employee or any officer of the
Company or any of its Subsidiaries. For the purposes of any provision of this
Plan relating to Incentive Stock Options, the term "Employee" is limited to any
employee (as that term is defined under Code Section 3401(c)) or officer of the
Company or any of its Subsidiaries.

<PAGE>

      "Fair Market Value" of the Stock shall mean, for all purposes of the Plan
unless otherwise provided (i) the mean between the high and low sales prices of
the Stock as reported on the National Market System or Small Cap Market of the
National Association of Securities Dealers, Inc., Automated Quotation System, or
any similar system of automated dissemination of quotations of securities prices
then in common use, if so quoted, or (ii) if not quoted as described in clause
(i), the mean between the high bid and low asked quotations for the Stock as
reported by a the National Quotation Bureau Incorporated or such other source as
the Committee determines, or (iii) if the Stock is listed or admitted for
trading on any national securities exchange, the mean between the high and low
sales price, or the closing bid price if no sale occurred, of the Stock on the
principal securities exchange on which the Stock is listed. In the event that
the method for determining the Fair Market Value of the Stock provided for above
shall either be not applicable or not be practical, in the opinion of the
Committee, then the Fair Market Value shall be determined by such other
reasonable method as the Committee, in its discretion, selects and applies.

      "Grantee" shall mean an Eligible Person or Employee granted a Stock
Option.

      "Granting Date" shall mean the date on which the Committee authorizes the
issuance of a Stock Option for a specified number of shares of Stock to a
specified Eligible Person or Employee.

      "Incentive Stock Option" shall mean a Stock Option granted under the Plan
which is properly qualified under the provisions of Section 422 of the Code.

      "Nonstatutory Stock Option" shall mean a Stock Option granted within the
Plan which is not an Incentive Stock Option or otherwise qualified under similar
tax provisions.

      "Progressive Stock Options" shall mean either Incentive Stock Options or
Nonstatutory Stock Options granted pursuant to Section 5(j) of this Plan.

      "Rule 16b-3" shall mean Rule 16b-3 promulgated by the Securities and
Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended,
or any rule in replacement thereof.

      "Stock" shall mean the Common Stock, par value $.001 per share, of the
Company.

      "Stock Option" shall mean an Incentive Stock Option or Nonstatutory Stock
Option granted pursuant to the Plan to purchase shares of Stock.

      "Subsidiary" shall mean any subsidiary corporation as defined in Section
424(f) of the Code.

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SECTION 3. SHARES OF STOCK SUBJECT TO THE PLAN

      Subject to adjustment pursuant to Section 8, 2,000,000 shares of Stock
shall be reserved for issuance upon the exercise of Stock Options granted
pursuant to this Plan. Shares delivered under the Plan may be authorized and
unissued shares or issued shares held by the Company in its treasury. If any
Stock Options expire or terminate without having been exercised, the shares of
Stock covered by such Stock Option shall become available again for the grant of
Stock Options hereunder.

SECTION 4. ADMINISTRATION OF THE PLAN

      (a) The Plan shall be administered by the Committee. Subject to the
express provisions of the Plan, the Committee shall have the exclusive authority
and discretion to construe and interpret the Plan, prescribe, amend and rescind
rules and regulations relating to it, determine the terms and provisions of
Stock Option grants, resolve all questions of fact and law in the administration
and operation of the Plan, and make all other determinations necessary or
appropriate in the administration and operation of the Plan.

      (b) It is intended that the Plan and any transaction hereunder meet all of
the requirements of Rule 16b-3 promulgated by the Securities and Exchange
Commission, as such rule is currently in effect and as hereafter modified or
amended, and all other applicable laws. If any provision of the Plan or any
transaction would disqualify the Plan or such transaction under, or would not
comply with, Rule 16b-3 or other applicable laws, such provision or transaction
shall be construed or deemed amended to conform to Rule 16b-3 or such other
applicable laws or otherwise shall be deemed to be null and void, in each case
to the extent permitted by law and determined by the Committee.

      (c) Any controversy or claim arising out of or related to this Plan shall
be determined unilaterally by and at the exclusive discretion of the Committee.

SECTION 5. GRANTING OF STOCK OPTIONS

      (a) All Eligible Persons and Employees are eligible to receive Stock
Options in accordance with the terms of this Plan.

      (b) The option price of each share of Stock subject to an Incentive Stock
Option shall be at least 100% of the Fair Market Value of a share of the Stock
on the Granting Date.

      (c) The option price of each share of Stock subject to a Nonstatutory
Stock Option shall be 100% of the Fair Market Value of a share of the Stock on
the Granting Date, or such other price either greater than or less than the Fair
Market Value (but in no event less than the par value of the Stock) as the
Committee determines appropriate to the purposes of the Plan and to the
Company's total compensation program.

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      (d) The Committee shall determine and designate from time to time those
Eligible Persons and Employees who are to be granted Stock Options and whether
the particular Stock Options are to be Incentive Stock Options or Nonstatutory
Stock Options, and shall also specify the number of shares covered by and the
option price per share of each Stock Option. Each Stock Option granted under the
Plan shall be clearly identified as to its status as a Nonstatutory Stock Option
or an Incentive Stock Option. The Committee shall also determine the date and
dates when each Stock Option becomes exercisable and any event that accelerates
the date or dates when the Stock Option becomes exercisable or that results in
the cancellation of the Stock Option; provided, however, that if an Employee's
written contract with the Company specifies the date or dates the Stock Option
becomes exercisable, or the acceleration or cancellation thereof, the written
contract controls.

      (e) The aggregate Fair Market Value (determined at the time the Stock
Option is granted) of the Stock with respect to which Incentive Stock Options
are exercisable for the first time by any individual during any calendar year
(under all plans of the individual's employer corporation and its parent and
subsidiary corporations) shall not exceed $100,000.

      (f) A Stock Option shall be exercisable during such period or periods and
in such installments as shall be fixed by the Committee at the time the Stock
Option is granted or in any amendment thereto; but each Stock Option shall
expire not later than ten years from the Granting Date.

      (g) The Committee shall have the authority to grant both transferable
Stock Options and nontransferable Stock Options, and to amend outstanding
nontransferable Stock Options to provide for transferability. Each
nontransferable Stock Option intended to qualify under Rule 16b-3 or otherwise
shall provide by its terms that it is not transferable otherwise than by will or
the laws of descent and distribution or, except in the case of Incentive Stock
Options, pursuant to a "qualified domestic relations order" as defined by the
Code, and is exercisable, during the Grantee's lifetime, only by the Grantee.
Each transferable Stock Option may provide for such limitations on
transferability and exercisability as the Committee may designate at the time a
Stock Option is granted or is otherwise amended to provide for transferability.

      (h) Stock Options may be granted to an Eligible Person or an Employee who
has previously received Stock Options or other options whether such prior Stock
Options or other options are still outstanding, have previously been exercised
or surrendered in whole or in part, or are cancelled in connection with the
issuance of new Stock Options.

      (i) Without in any way limiting the authority of the Committee to make
grants of Stock Options under the Plan, and in order to induce Eligible Persons
and Employees to retain ownership of Stock, the Committee may include within any
agreement reflecting a Stock Option a provision entitling the Grantee of such a
Stock Option to a further Stock Option (a "Progressive Stock Option") if the
Grantee exercises such Stock Option evidenced by such agreement, in whole or in
part, by surrendering other shares of Stock in accordance with this Plan and the
terms and conditions of such agreement. Any such Progressive Stock Option may be
for a number of shares of Stock equal to the number of surrendered shares, shall
become exerciseable no sooner

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than six months after the Granting Date of the Stock Option or such longer
period as the Committee may establish, shall have an option price per share
equal to one hundred percent (100%) of the Fair Market Value of a share of Stock
on the Granting Date of the Progressive Stock Option, and shall be subject to
such other terms and conditions as the Committee may determine.

      (j) Notwithstanding the foregoing, the option price of an Incentive Stock
Option in the case of a Grantee who owns more than ten (10%) percent of the
total combined voting power of all classes of stock of the Company or any of its
Subsidiaries, will not be less than one-hundred-ten percent (110%) of the Fair
Market Value of the Stock at the Granting date and in the case of such a
Grantee, the Incentive Stock Option may be exercised no more than five years
after the Granting Date.

SECTION 6. EXERCISE OF STOCK OPTIONS

      (a) Except as provided in Section 7, no Incentive Stock Option may be
exercised at any time unless the Grantee is an Eligible Person or an Employee on
the Date of Exercise and has been an Eligible Person or an Employee at all times
during the period beginning on the Granting Date and ending on the day 3 months
before the date of such exercise.

      (b) The Grantee shall pay the option price in full on the Date of Exercise
of a Stock Option in cash, by check, or by delivery of full shares of Stock of
the Company, duly endorsed for transfer to the Company with signature
guaranteed, by any combination thereof or by such other mode of payment as the
Committee may approve, including payment through a broker in accordance with
procedures permitted by rules and regulations of the Federal Reserve Board.
Stock will be accepted at its Fair Market Value on the Date of Exercise.

      (c) Subject to the approval of the Committee, or of such person to whom
the Committee may delegate such authority ("its designee"), and subject further
to the applicable regulations of any governmental authority, the Company may
loan to the Grantee a sum equal to an amount which is not in excess of 100% of
the purchase price of the shares of Stock acquired upon exercise of a Stock
Option, such loan to be evidenced by the execution and delivery of a promissory
note. Interest shall be paid on the unpaid balance of the promissory note at
such times and at such rate as shall be determined by the Committee or its
designee. Such promissory note shall be secured by the pledge to the Company of
shares of Stock having an aggregate purchase price on the date of purchase equal
to or greater than the amount of such note. A Grantee shall have, as to such
pledged shares of Stock, all rights of ownership including the right to vote
such shares of Stock and to receive dividends paid on such shares of Stock,
subject to the security interest of the Company. Such shares of Stock shall not
be released by the Company from the pledge unless the proportionate amount of
the note secured thereby has been repaid to the Company; provided, however that
shares of Stock subject to a pledge may be used to pay all or part of the
purchase price of any other option granted hereunder or under any other stock
incentive plan of the Company under the terms of which the purchase price of an
option may be paid by the surrender of shares of Stock, subject to the terms and
conditions of this Plan relating to the surrender of shares of Stock in payment
of the exercise price of an option. In such event,

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that number of the newly purchased shares of Stock equal to the shares of Stock
previously pledged shall be immediately pledged as substitute security for the
pre-existing debt of the Grantee to the Company, and thereupon shall be subject
to the provisions hereof relating to pledged shares of Stock. All notes executed
hereunder shall be payable at such times and in such amounts and shall contain
such other terms as shall be specified by the Committee or its designee or
stated in the option agreement; provided, however, that such terms shall conform
to requirements contained in any applicable regulations which are issued by any
governmental authority.

SECTION 7. TERMINATION OF EMPLOYMENT

      Except as otherwise provided by the Committee at the time the Stock Option
is granted or any amendment thereto, and except as otherwise provided in an
Eligible Person's or an Employee's written contract with the Company, if a
Grantee who was an Employee at the time of grant, and ceases to be an Employee
then:

      (a) if termination of employment is voluntary or involuntary without
cause, the Grantee may exercise each Stock Option held by the Grantee within
three months after such termination (but not after the expiration date of the
Stock Option) to the extent of the number of shares subject to the Stock Option
which are exercisable pursuant to its terms at the date of termination;

      (b) if termination is for cause, all Stock Options held by the Grantee
shall be cancelled as of the date of termination. For purposes of this Plan,
"cause" means cause as defined in an Eligible Person's or an Employee's written
contract with the Company, or in the absence of a written contract that contains
a definition of cause, as determined by the Company;

      (c) subject to the provisions of Section 7(d), if termination is (i) by
reason of retirement at a time when the Grantee is entitled to the current
receipt of benefits under any retirement plan maintained by the Company or any
Subsidiary, or (ii) by reason of disability each Stock Option held by the
Grantee may be exercised by the Grantee at any time (but not after the
expiration date of the Stock Option) (within one year of termination in the case
of Incentive Stock Options) to the extent of the number of shares subject to the
Stock Option which were exercisable pursuant to its terms at the date of
termination. For purposes of this Plan, "disability" means disability as defined
in an Eligible Person's or an Employee's written contract with the Company, or
in the absence of a written contract that contains a definition of disability,
the definition of disability in any disability insurance policy maintained by
the Company at the time of such disability, or in the absence of such
definition, as determined by the Company;

      (d) if termination is by reason of the death of the Grantee, or if the
Grantee dies after retirement or disability as referred to in Section 7(c), each
Stock Option held by the Grantee may be exercised by the Grantee's estate, or by
any person who acquires the right to exercise the Stock Option by reason of the
Grantee's death, at any time within a period equal to the lesser of three years
after death or the expiration date of the Stock Option to the extent of the
total number

                                       6
<PAGE>

of shares subject to the Stock Option which were exercisable pursuant to its
terms at the date of termination; or

      (e) if the Grantee should die within three months after voluntary
termination of employment or involuntary termination without cause, as
contemplated in Section 7(a), each Stock Option held by the Grantee may be
exercised by the Grantee's estate, or by any person who acquires the right to
exercise by reason of the Grantee's death, at any time within a period of one
year after death (but not after the expiration date of the Stock Option) to the
extent of the number of shares subject to the Stock Option which were
exercisable pursuant to its terms at the date of termination.

SECTION 8. ADJUSTMENTS

      In the event of any merger, consolidation, reorganization,
recapitalization, stock dividend, stock split or other change in the corporate
structure or capitalization affecting the Stock, there shall be an appropriate
adjustment made by the Committee in the number and kind of shares that may be
granted in the aggregate and to individuals under the Plan, the number and kind
of shares subject to each outstanding Stock Option and the option prices.

SECTION 9. CHANGE OF CONTROL

      In granting a Stock Option, and subject to an Eligible Person's or an
Employee's written contract with the Company, the Committee shall determine
whether a Stock Option becomes immediately exercisable upon a change in control.
For purposes of this Agreement, a change in control means any of the following
events: (a) the consummation of a sale of all or substantially all of the
Company's assets in one or a series of related transactions to a person or
entity or persons or entities each of whom is not an Affiliate of the Company
prior to such sale; (b) the consummation of a sale (whether by merger,
consolidation or otherwise) of all the capital stock of the Company for stock,
cash or other property or a combination thereof in one or a series of related
transactions to a person or entity or persons or entities not a shareholder of
the Company prior to such sale; (c) a combination of clauses (a) and (b); or (d)
a combination of (b) and a sale of assets of the Company. For purposes of this
Section 9, "affiliate" means any business entity controlling, controlled by, or
under common control with the Company.

SECTION 10. GENERAL PROVISIONS

      (a) Each Stock Option shall be evidenced by a written instrument
containing such terms and conditions, not inconsistent with this Plan, as the
Committee approves.

      (b) The granting of a Stock Option in any year shall not give the Grantee
any right to similar grants in future years or any right to be retained in the
employ of the Company or any Subsidiary or interfere in any way with the right
of the Company or such Subsidiary to terminate an Employee's employment at any
time.

                                       7
<PAGE>

      (c) The Company may deduct from any payment or distribution under the Plan
any federal, state or local taxes of any kind required by law to be withheld
with respect to such payments or to take such other action as may be necessary
to satisfy all obligations for the payment of such taxes. In case distributions
are made in shares of Stock, the Company shall have the right to retain the
value of sufficient shares of Stock to equal the amount of tax to be withheld
for such distributions or require a recipient to pay the Company for any such
taxes required to be withheld on such terms and conditions prescribed by the
Committee.

      (d) No Grantee shall have any of the rights of a shareholder by reason of
a Stock Option until it is exercised.

      (e) This Plan shall be construed and enforced in accordance with the laws
of the State of Delaware (without regard to the legislative or judicial conflict
of laws rules of any state), except to the extent superseded by federal law.

SECTION 11. AMENDMENT AND TERMINATION

      (a) The Plan shall terminate on April __, 2011 and no Stock Option shall
be granted hereunder after that date, provided that the Board may terminate the
Plan at any time prior thereto.

      (b) The Board may amend the Plan at any time without notice, provided
however, that the Board may not, without prior approval by the shareholders, (i)
increase the maximum number of shares of Stock for which Stock Options may be
granted (except as contemplated by the provisions of Section 8), (ii) materially
increase the benefits accruing to participants under the Plan, or (iii)
materially modify the requirements as to eligibility for participation in the
Plan.

      (c) No termination or amendment of the Plan may, without the consent of a
Grantee to whom a Stock Option theretofore has been granted, adversely affect
the rights of such Grantee under such Stock Option.

SECTION 12. EFFECTIVE DATE

      The Plan shall become effective as of the date it is approved by the
Company's stockholders.

                                       8
<PAGE>

                  U.S. MOBILE SERVICES, INC. STOCK OPTION PLAN

                 Nonstatutory Stock Option Terms And Conditions

      1. Plan Incorporated by Reference. This Option is issued pursuant to the
terms of the Plan and may be amended as provided in the Plan. Capitalized terms
used and not otherwise defined in this certificate have the meanings given to
them in the Plan. This certificate does not set forth all of the terms and
conditions of the Plan, which are incorporated herein by reference. The
Committee administers the Plan and its determinations regarding the operation of
the Plan are final and binding. Copies of the Plan may be obtained upon written
request without charge from the President of the Company.

      2. Option Price. The price to be paid for each share of Common Stock
issued upon exercise of the whole or any part of this Option is the Option Price
set forth on the face of this certificate.

      3. Exercisability Schedule. This Option may be exercised at any time and
from time to time for the number of shares and in accordance with the
exercisability schedule set forth on the face of this certificate, but only for
the purchase of whole shares. This Option may not be exercised as to any shares
after the Expiration Date.

      4. Method of Exercise. To exercise this Option, the Optionee must deliver
written notice of exercise to the President of the Company specifying the number
of shares with respect to which the Option is being exercised accompanied by
payment of the Option Price for such shares in cash, by certified check or in
such other form, including shares of Common Stock of the Company valued at their
Fair Market Value on the date of delivery, as the Committee may at the time of
exercise approve. Promptly following such notice, the Company will deliver to
the Optionee a certificate representing the number of shares with respect to
which the Option is being exercised.

      5. Rights as a Stockholder or Employee. The Optionee shall not have any
rights in respect of shares as to which the Option has not been exercised and
payment made as provided above. The Optionee shall not have any rights to
continued employment by the Company or any Subsidiary by virtue of the grant of
this Option.

      6. Recapitalization, Mergers, Etc. As provided in the Plan, in the event
of certain corporate transactions affecting the Company's outstanding Common
Stock, the Committee shall equitably adjust the number and kind of shares
subject to this Option and the exercise price hereunder. If such transaction
involves a consolidation or merger of the Company with another entity, the sale
or exchange of all or substantially all of the assets of the Company or a
reorganization or liquidation of the Company, then in lieu of the foregoing, the
Committee may upon written notice to the Optionee provide that this Option shall
terminate on a date not less than 20 days after the date of such notice unless
theretofore exercised. In connection with such notice, the Committee may in its
discretion accelerate or waive any deferred exercise period.

      7. Option Not Transferable. This Option is not transferable by the
Optionee otherwise than by will or the laws of descent and distribution or
pursuant to a "qualified domestic relations order" as defined in the Code and is
exercisable, during the Optionee's lifetime, only by Optionee. Any attempted
assignment,, transfer, pledge, hypothecation or other disposition other than in
accordance with the terms set forth herein and in the Plan shall be void and of
no effect.

      8. Compliance with Securities Laws. It shall be a condition to the
Optionee's right to purchase shares of Common Stock hereunder that the Company
may, in its discretion, require (a) that the shares of Common Stock reserved for
issue upon the exercise of this Option have been duly listed, upon official
notice of issuance, upon any national securities exchange or automated quotation
system on which the Company's Common Stock may then be listed or quoted, (b)
that either (i) a registration statement under the Securities Act of 1933 with
respect to the shares is in effect, or (ii) in the opinion of counsel for the
Company, the proposed purchase shall be exempt from registration under that Act
and the Optionee shall have made such undertakings and agreements with the
Company as the Company may reasonably require, and (c) that such other steps, if
any, as counsel for the Company shall consider necessary to comply with any law
applicable to the issue of such shares by the Company has been taken by the
Company or the Optionee, or both. The certificates representing the shares
purchased under this Option may contain such legends as counsel for the Company
considers necessary to comply with any applicable law.

      9. Payment of Taxes. The Optionee shall pay to the Company, or make
provision satisfactory to the Company for payment of, any taxes required by law
to be withheld with respect to the exercise of this Option. The Committee may,
in its discretion, require any other Federal or state taxes imposed on the sale
of the shares to be paid by the Optionee. In the Committee's discretion, such
tax obligations may be paid in whole or in part in shares of Common Stock,
including shares retained from the exercise of this Option, valued at their Fair
Market Value on the date of delivery. The Company and its Subsidiaries may, to
the extent permitted by law, deduct any such tax obligations from any payment of
any kind otherwise due to the Optionee.

<PAGE>

2000 NSO -                                                               Shares

                           U.S. MOBILE SERVICES, INC.

                             2000 Stock Option Plan
                      Nonstatutory Stock Option Certificate

      U.S. Mobile Services, Inc. (the "Company"), a Delaware corporation, hereby
grants to the person named below an option to purchase shares of Common Stock,
par value $.001 per share, of the Company (the "Option") under and subject to
the Company's 2000 Stock Option Plan (the "Plan") exercisable on the following
terms and conditions and those set forth on the reverse side of this
certificate:

      Name of Optionee:
               Address:

   Social Security No:.
      Number of Shares:
          Option Price:
         Date of Grant: ________, 2000

                             Exercisability Schedule

After ______________, 20__                           as to ____ shares,
After ______________, 20__               as to _____ additional shares
After ______________, 20__               as to _____ additional shares

Expiration Date:

Special Provisions Regarding Rights if Optionee Ceases to be an Eligible Person
or Employee: None

Other Special Provisions:

      The Option shall not be treated as an Incentive Stock Option under Section
422 of the Internal Revenue Code of 1986, as amended (the "Code").

      By acceptance of this Option, the Optionee agrees to the terms and
conditions hereof.

                                      U.S. MOBILE SERVICES, INC.

Dated:_______________                 By: _____________________________________
                                          Name:
                                          Title:

ACCEPTED:

____________________________
[Name of Optionee]

<PAGE>

2000 ISO -1                                                    _________ Shares

                           U.S. MOBILE SERVICES, INC.

                             2000 Stock Option Plan
                       Incentive Stock Option Certificate

      U.S. Mobile Services, Inc. (the "Company"), a Delaware corporation, hereby
grants to the person named below an option to purchase shares of Common Stock,
par value $.001 per share, of the Company (the "Option") under and subject to
the Company's 2000 Stock Option Plan (the "Plan") exercisable on the following
terms and conditions and those set forth on the reverse side of this
certificate:

      Name of Optionee:
               Address:
   Social Security No.:
      Number of Shares:
          Option Price:  $
         Date of Grant:

                             Exercisability Schedule

After [date]                                     as to _________ shares,

Expiration Date:

Special Provisions Regarding Rights
if Optionee Ceases to be an Eligible Person or Employee:

Other Special Provisions:

      Although this Option is intended to be treated as an Incentive Stock
Option under Section 422 of the Internal Revenue Code of 1986, as amended (the
"Code"), the Company does not and cannot guaranty or warranty that the Option
will be so treated. Certain acts of the Optionee such as disposing of the Stock
issued pursuant to this Option prior to the expiration of the holding periods
required under Code Section 422 will prevent this Option from being treated as
an Incentive Stock Option.

      By acceptance of this Option, the Optionee agrees to the terms and
conditions hereof.

                                  U.S. MOBILE SERVICES, INC.

Dated:___________                 By: __________________________________________
                                  Name:
                                  Title:

ACCEPTED:

_______________________________
[Name of Optionee]

<PAGE>

                U.S. MOBILE SERVICES, INC. 2000 STOCK OPTION PLAN

                   Incentive Stock Option Terms and Conditions

      1. Plan Incorporated by Reference. This Option is issued pursuant to the
terms of the Plan and may be amended as provided in the Plan. Capitalized terms
used and not otherwise defined in this certificate have the meanings given to
them in the Plan. This certificate does not set forth all of the terms and
conditions of the Plan, which are incorporated herein by reference. The
Committee administers the Plan and its determinations regarding the operation of
the Plan are final and binding. Copies of the Plan may be obtained upon written
request without charge from the President of the Company.

      2. Option Price. The price to be paid for each share of Common Stock
issued upon exercise of the whole or any part of this Option is the Option Price
set forth on the face of this certificate.

      3. Exercisability Schedule. This Option may be exercised at any time and
from time to time for the number of shares and in accordance with the
exercisability schedule set forth on the face of this certificate, but only for
the purchase of whole shares. This Option may not be exercised as to any shares
after the Expiration Date.

      4. Method of Exercise. To exercise this Option, the Optionee must deliver
written notice of exercise to the President of the Company specifying the number
of shares with respect to which the Option is being exercised accompanied by
payment of the Option Price for such shares in cash, by certified check or in
such other form, including shares of Common Stock of the Company valued at their
Fair Market Value on the date of delivery, as the Committee may at the time of
exercise approve. Promptly following such notice, the Company will deliver to
the Optionee a certificate representing the number of shares with respect to
which the Option is being exercised.

      5. Rights as a Stockholder or Employee. The Optionee shall not have any
rights in respect of shares as to which the Option has not been exercised and
payment made as provided above. The Optionee shall not have any rights to
continued employment by the Company or any Subsidiary by virtue of the grant of
this Option.

      6. Recapitalization, Mergers, Etc. As provided in the Plan, in the event
of certain corporate transactions affecting the Company's outstanding Common
Stock, the Committee shall equitably adjust the number and kind of shares
subject to this Option and the exercise price hereunder. If such transaction
involves a consolidation or merger of the Company with another entity, the sale
or exchange of all or substantially all of the assets of the Company or a
reorganization or liquidation of the Company, then in lieu of the foregoing, the
Committee may upon written notice to the Optionee provide that this Option shall
terminate on a date not less than 20 days after the date of such notice unless
theretofore exercised. In connection with such notice, the Committee may in its
discretion accelerate or waive any deferred exercise period.

      7. Option Not Transferable. This Option is not transferable by the
Optionee otherwise than by will or the laws of descent and distribution and is
exercisable, during the Optionee's lifetime, only by Optionee. Any attempted
assignment,, transfer, pledge, hypothecation or other disposition other than in
accordance with the terms set forth herein and in the Plan shall be void and of
no effect.

      8. Compliance with Securities Laws. It shall be a condition to the
Optionee's right to purchase shares of Common Stock hereunder that the Company
may, in its discretion, require (a) that the shares of Common Stock reserved for
issue upon the exercise of this Option have been duly listed, upon official
notice of issuance, upon any national securities exchange or automated quotation
system on which the Company's Common Stock may then be listed or quoted, (b)
that either (i) a registration statement under the Securities Act of 1933 with
respect to the shares is in effect, or (ii) in the opinion of counsel for the
Company, the proposed purchase shall be exempt from registration under that Act
and the Optionee shall have made such undertakings and agreements with the
Company as the Company may reasonably require, and (c) that such other steps, if
any, as counsel for the Company shall consider necessary to comply with any law
applicable to the issue of such shares by the Company has been taken by the
Company or the Optionee, or both. The certificates representing the shares
purchased under this Option may contain such legends as counsel for the Company
considers necessary to comply with any applicable law.

      9. Payment of Taxes. The Optionee shall pay to the Company, or make
provision satisfactory to the Company for payment of, any taxes required by law
to be withheld with respect to the exercise of this Option. The Committee may,
in its discretion, require any other Federal or state taxes imposed on the sale
of the shares to be paid by the Optionee. In the Committee's discretion, such
tax obligations may be paid in whole or in part in shares of Common Stock,
including shares retained from the exercise of this Option, valued at their Fair
Market Value on the date of delivery. The Company and its Subsidiaries may, to
the extent permitted by law, deduct any such tax obligations from any payment of
any kind otherwise due to the Optionee.

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