Document:

ADDENDUM XI
                                       TO
                       SPRINT PCS MANAGEMENT AGREEMENT AND
                          SPRINT PCS SERVICES AGREEMENT

             AMENDING THESE AGREEMENTS FURTHER AND RESTATING CERTAIN
                        PARAGRAPHS IN ADDENDA I THROUGH X

                               DATED JUNE 14, 2004

MANAGER: ALAMOSA WISCONSIN LIMITED PARTNERSHIP

SERVICE AREA BTAS:

Appleton-Oshkosh # 18,
Eau Claire # 123,
Fond du Lac # 148,
Green Bay # 173,
La Crosse-Winona # 234,
Madison # 272 (Only Columbia, Juneau, Marquette, Sauk Counties and those
portions of Dane County where Manager will meet Sprint PCS coverage along
Highway 151 and I-90/94 north of Madison),
Manitowoc # 276,
Milwaukee # 297 (Only those portions of Dodge County not currently covered by
  Sprint PCS along Highway 41 and the City of Watertown),
Minneapolis-St. Paul # 298 (Only Barron County and those portions of Polk County
not currently covered by Sprint PCS along Highway 8 near the city of St. Croix
Falls),
Sheboygan # 417,
Stevens Point-Marshfield-Wisconsin Rapids # 432,
Wausau-Rhinelander # 466.

      This Addendum XI (this "ADDENDUM") contains amendments to the Sprint PCS
Management Agreement, the Sprint PCS Services Agreement, the Sprint Trademark
and Service Mark License Agreement and the Sprint Spectrum Trademark and Service
Mark License Agreement, each of which was entered into on December 6, 1999 by
the same parties to this Addendum.

      The Management Agreement, Services Agreement and Trademark License
Agreements were amended by:

      (1)      Addendum I dated December 6, 1999,
      (2)      Addendum II dated February 3, 2000,
      (3)      Addendum III dated April 25, 2000,
      (4)      Addendum IV dated June 23, 2000,
      (5)      Addendum V dated February 14, 2001,

      (6)      Addendum VI dated March 30, 2001,
      (7)      Addendum VII dated July 19, 2002,
      (8)      Addendum VIII dated November 29, 2002,
      (9)      Addendum IX dated September 12, 2003, and
      (10)     Addendum X dated March 26, 2004.

      The purposes of this Addendum are to (1) amend the Management Agreement,
the Services Agreement, the Trademark License Agreements and the Schedule of
Definitions and restate those paragraphs in the addenda executed previously that
amend the Management Agreement, the Services Agreement, the Trademark License
Agreements and the Schedule of Definitions (see section A below), and (2)
provide cross-references to those paragraphs in addenda executed previously that
are not restated in this Addendum (see section B below).

      The terms and provisions of this Addendum control over any conflicting
terms and provisions contained in the Management Agreement, the Services
Agreement, the Trademark License Agreements and the Schedule of Definitions. The
Management Agreement, the Services Agreement, the Trademark Licenses Agreements,
the Schedule of Definitions and all prior addenda continue in full force and
effect, except for express modifications made in this Addendum. This Addendum
does not change the effective date of any prior amendment made to the Management
Agreement, the Services Agreement, the Trademark License Agreements or the
Schedule of Definitions through previously executed addenda.

      Capitalized terms used and not otherwise defined in this Addendum have the
meaning ascribed to them in the Schedule of Definitions or in prior addenda.
Section and Exhibit references are to sections and Exhibits of the Management
Agreement unless otherwise noted.

      The parties entered into Addendum X dated March 26, 2004, but the parties
acknowledge that Addendum X is superseded in its entirety by this Addendum. The
parties are executing this Addendum as of the date noted above, but this
Addendum becomes effective on (the "EFFECTIVE DATE") either (1) March 1, 2004,
if the parties execute all of the following addenda by June 14, 2004:

      o     Alamosa Missouri, LLC Addendum XII,

      o     Alamosa Wisconsin Limited Partnership Addendum XI,

      o     Southwest PCS, L.P. Addendum VII,

      o     Texas Telecommunications, LP Addendum XII, and

      o     Washington Oregon Wireless LLC Addendum VIII.

(2) the first calendar day of the first calendar month after the above addenda
are executed if the parties execute the above addenda after June 14, 2004.

                                       2

      On the Effective Date the Management Agreement, the Services Agreement,
the Trademark License Agreements and the Schedule of Definitions are amended and
restated as follows:

A. NEW AMENDMENTS AND RESTATEMENT OF PREVIOUS AMENDMENTS TO SPRINT PCS
AGREEMENTS.

                              MANAGEMENT AGREEMENT
                              --------------------

      1. VENDOR PURCHASE AGREEMENTS - SOFTWARE FEES [ADDM X,SS.1; REVISED BY
THIS ADDENDUM]. Section 1.3 is amended to read as follows:

            Insert: "1.3.1 DISCOUNTED VOLUME-BASED PRICING." before the first
      paragraph.

            Insert: "1.3.2 SUBSCRIBER AND INFRASTRUCTURE EQUIPMENT." before the
      second paragraph.

            Insert: "1.3.3 EXCLUSIVE USE." before the third paragraph.

            Add a new section 1.3.4 as follows:

      1.3.4 SOFTWARE FEES.

            (a) Manager acknowledges that Sprint PCS administers the testing and
      implementation of the Software (i.e., pushing of the Software) into the
      Service Area Network.

            (b) Sprint PCS, when obtaining software for its own use that is
      identical to the Software, will use commercially reasonable efforts to
      obtain a license from vendors providing for the right of Manager to use
      the Software in connection with telecommunications equipment manufactured
      by the vendor (collectively the software obtained by Sprint PCS for its
      own use and the Software that operates on telecommunications equipment
      manufactured by the vendor are for purposes of this section 1.3.4, the
      "VENDOR SOFTWARE"; when the term "Vendor Software" is used with respect to
      Manager, it means only the Software, and not the software used only by
      Sprint PCS).

            (c) Manager will arrange independently with the vendor to obtain a
      license if Sprint PCS cannot reasonably obtain a license for Manager. Any
      license that Manager obtains from a vendor must require the Vendor
      Software to be tested in Sprint PCS test beds by Sprint PCS and require
      Sprint PCS, not the vendor or Manager, to push the Vendor Software to the
      Service Area Network unless Sprint PCS otherwise consents in advance in
      writing. Sprint PCS agrees to test the Vendor Software in Sprint PCS test
      beds within a reasonable period after Manager reasonably requests the
      tests in writing.

            (d) Sprint PCS will:

                                       3

                  (i) notify Manager in writing at least 60 days before the date
            of an automatic renewal of, or Sprint PCS' unilateral act to renew
            or extend, an agreement that provides Sprint PCS the right to use
            the Vendor Software, or

                  (ii) use reasonable efforts to notify Manager in writing
            before the date Sprint PCS intends to start negotiations with a
            vendor regarding extension, renewal, pricing or other material terms
            relating to Sprint PCS' and Manager's right to use the Vendor
            Software (whether for new Software or renewal of an existing
            license), and at least 60 days before the date Sprint PCS executes
            an agreement, extension or renewal.

            The notice by Sprint PCS will include the material terms and
      conditions of any such agreement or negotiations to the extent known at
      the time of the notice, including the network elements to be covered by
      the right to use the Vendor Software. Manager must notify Sprint PCS in
      writing within 30 days after receiving the notice described in the first
      sentence of this section 1.3.4(d) if Manager wants Sprint PCS to attempt
      to obtain or continue the right for Manager to use the Vendor Software.
      Sprint PCS will renew or negotiate the agreement as if Manager will not be
      a user of the Vendor Software if Manager does not provide notice to Sprint
      PCS within the 30-day period. However, Sprint PCS may obtain pricing from
      the vendor for the Vendor Software that includes Manager as a user if
      obtaining the pricing does not obligate Manager to be a user.

            Sprint PCS will advise Manager upon Manager's reasonable request of
      the status of the Software negotiations if Manager requested Sprint PCS to
      obtain or continue the right for Manager to use the Vendor Software under
      Sprint PCS' agreement with the vendor. Sprint PCS will use commercially
      reasonable efforts to give Manager notice of the final pricing for the
      right to use the Vendor Software no less than 20 days before the expected
      execution or renewal of the agreement; provided that, in any event, Sprint
      PCS will give Manager notice of the final pricing no less than 3 Business
      Days before the expected execution or renewal of the agreement. If
      necessary, Manager agrees to use commercially reasonable efforts to enter
      into a nondisclosure agreement with the vendor to facilitate providing
      such final pricing to Manager.

            Manager may give Sprint PCS notice by the time set forth in Sprint
      PCS' notice to Manager (which time will not be less than 10 Business Days)
      that Manager does not intend to use the Vendor Software through the
      agreement between Sprint PCS and the vendor. If Manager does not give this
      final notice to Sprint PCS, Manager is deemed to agree to be a user of the
      Vendor Software through the agreement between Sprint PCS and the vendor
      and will pay the Allocable Software Fee (as defined below). Within 15
      Business Days after execution of an agreement between Sprint PCS and the
      vendor, Sprint PCS will

                                       4

      provide to Manager a forecast of Manager's Allocable Software Fee, the
      estimated payment due dates relating to the Allocable Software Fee, and
      the proportion of Manager's Allocable Software Fee forecast to be due on
      each payment due date.

            Sprint PCS does not have to obtain a license for Vendor Software for
      Manager, even if Manager requests Sprint PCS to obtain such license, if at
      any time before execution of the agreements granting the license Sprint
      PCS reasonably believes that Manager is more likely than not to
      unreasonably refuse to pay the Allocable Software Fee or Sprint PCS
      reasonably believes that the Manager is in such financial condition that
      Manager is more likely than not to be unable to pay the Allocable Software
      Fee.

            If Manager accepts the Vendor Software, Sprint will give Manager,
      Manager's proportional share of (i) any cash benefits relating
      specifically to the Vendor Software that Sprint PCS obtains from the
      vendor, and (ii) to the extent reasonably able to be made available to
      Manager, other benefits, including training, relating specifically to the
      Vendor Software.

            (e) Sprint PCS will pay all Software Fees relating to the Vendor
      Software to the vendor if Sprint PCS obtains a license from the vendor
      that provides Manager the right to use the Vendor Software and Manager
      agrees to pay any applicable Allocable Software Fee in accordance with
      this section 1.3.4(e). Manager will be deemed to agree to pay any
      applicable Allocable Software Fee if both:

                        (i) Manager has not taken the action described in
                  paragraph (d) above to decline obtaining the right to use the
                  Vendor Software through the agreement between Sprint PCS and
                  the vendor, and

                        (ii) Sprint PCS obtains a license providing for the
                  right of Manager to use the Vendor Software.

            Manager will pay Sprint PCS the Allocable Software Fee within 30
      days after receipt of an invoice. Sprint PCS will invoice Manager only
      after Sprint PCS pays the underlying Software Fee to the vendor. The
      Allocable Software Fee will not include any amount for Software that is
      the same as or functionally equivalent to any Software (y) that is a
      component of any service for which a fee is charged under the Services
      Agreement or (z) for which Sprint PCS otherwise charges Manager under this
      agreement.

            Sprint PCS will calculate the "ALLOCABLE SOFTWARE FEE" as follows:

                  For each vendor, multiply:

                        (i) the Total Software Cost of the Software Fees
                  attributable to the Vendor Software for which Sprint

                                       5

                  PCS has obtained for itself, Manager and Other Managers a
                  license or other right to use, by

                        (ii) the quotient of:

                              (A) the number of Customers and Reseller Customers
                        with an NPA-NXX assigned to the Service Area that are
                        assigned to a system using the Vendor Software, as
                        reported in the most recent monthly report that Sprint
                        PCS issues before the date that Sprint PCS prepares an
                        Allocable Software Fee invoice, divided by:

                              (B) the number of Customers and Reseller Customers
                        that are assigned to all systems using the Vendor
                        Software, as reported in the most recent monthly report
                        that Sprint PCS issues before the date that Sprint PCS
                        prepares an Allocable Software Fee invoice.

            (f) Sprint PCS will include with the invoice for the Allocable
      Software Fee a list of the component charges, if available from the
      Vendor. The Software Fees that Sprint PCS pays to the vendor will reflect
      rates no greater than commercial rates negotiated at arms' length. For
      purposes of clarification, the parties acknowledge the vendor may insist
      on a comprehensive fee without listing each component, but rather
      asserting that the fee covers all software necessary to operate the
      equipment. But Sprint PCS will provide to Manager a description of all the
      features and functionality in reasonable detail for all Software for which
      Manager is to pay an Allocable Software Fee.

            (g) Manager will not be charged the Allocable Software Fee for the
      Vendor Software after Manager:

                        (i) notifies Sprint PCS in writing within the periods
                  allowed in section 1.3.4(d) that Manager declines to have
                  Sprint PCS obtain a right for Manager to use the Vendor
                  Software or that it does not intend to use the Vendor
                  Software,

                        (ii) obtains its own license providing for Manager's
                  right to use the Vendor Software, and

                        (iii) complies with the requirements of section
                  1.3.4(h).

            (h) Manager will obtain its own license providing for Manager's
      right to use the Vendor Software from the vendor if Manager elects not to
      have Sprint PCS attempt to obtain a right for Manager to use the Vendor
      Software under

                                       6

      section 1.3.4(d). Manager will notify Sprint PCS in writing and deliver to
      Sprint PCS within 10 Business Days after Manager's execution of Manager's
      separate license, a signed document from the vendor confirming that:

                        (i) the vendor has provided Manager a separate license
                  for the necessary software and the term of that license, which
                  term with appropriate renewal rights, must be at least as long
                  as the license Sprint PCS has from the vendor,

                        (ii) the fees paid by Manager to the vendor reflect
                  commercial rates negotiated at arms' length,

                        (iii) the Vendor Software covered by Manager's license
                  provides the usage and functionality necessary for Manager to
                  operate the Service Area Network in compliance with the Sprint
                  PCS Technical Program Requirements, and

                        (iv) the Vendor Software may be tested in Sprint PCS
                  test beds by Sprint PCS and will be pushed to the Service Area
                  Network by Sprint PCS, not the vendor or Manager, unless
                  Sprint PCS otherwise consents in advance in writing. Sprint
                  PCS agrees to test the Vendor Software in Sprint PCS test beds
                  within a reasonable period after Manager reasonably requests
                  in writing.

      2. INTERCONNECTION [ADDM X,SS.2]. Section 1.4 is amended and restated in
its entirety to read as follows:

            If Manager desires to interconnect a portion of the Service Area
      Network with another carrier and Sprint PCS can interconnect with that
      carrier at a lower rate, then to the extent that applicable laws, tariffs
      and agreements permit, Sprint PCS will use commercially reasonable efforts
      to arrange for the interconnection under its agreements with the carrier
      within a commercially reasonable period. Sprint PCS will bill the
      interconnection fees to Manager at actual cost.

      3. FORECASTING [ADDM X,SS.3]. Section 1.6 is amended and restated in its
entirety to read as follows:

            1.6 FORECASTING. Manager and Sprint PCS will work cooperatively to
      generate mutually acceptable forecasts of important business metrics that
      they agree upon. The forecasts are for planning purposes only and do not
      constitute either party's obligation to meet the quantities forecast.

                                       7

      4. FINANCING [ADDM I, SS.5 AND ADDM X, SS.4; REVISED BY THIS ADDENDUM].

            (a) Section 1.7 is amended to read as follows:

            1.7 FINANCING. The construction and operation of the Service Area
      Network requires a substantial financial commitment by Manager. The manner
      in which Manager will finance the build-out of the Service Area Network
      and provide the necessary working capital to operate the business is
      described in detail on Exhibit 1.7. Manager will allow Sprint PCS an
      opportunity to review before filing any registration statement or
      prospectus or any amendment or supplement thereto and before distributing
      any offering memorandum or amendment or supplement thereto, and agrees not
      to file or distribute any such document if Sprint PCS reasonably objects
      in writing on a timely basis to any portion of the document that refers to
      Sprint PCS, its Related Parties, their respective businesses, this
      agreement or the Services Agreement.

            (b) Section 5(b) of Addendum I is deleted.

            (c) Exhibit 1.7 attached to Addendum X supersedes and replaces
      Exhibit 1.7 attached to Addendum VI to the Management Agreement.

      5. INFORMATION [ADDM X,SS.5]. A new section 1.9 is added to the Management
Agreement.

            1.9 ACCESS TO INFORMATION.

                  1.9.1 NETWORK OPERATIONS.Manager and Sprint PCS will have
            access to, and may monitor, record or otherwise receive, information
            processed through equipment, including switches, packet data
            switching nodes and cell site equipment, that relates to the
            provision of Sprint PCS Products and Services or to the provision of
            telecommunications services to Reseller Customers in the Service
            Area Network, if the access, monitoring, recording or receipt of the
            information is accomplished in a manner that:

                        (i) Does not unreasonably impede Manager or Sprint PCS
                  from accessing, monitoring, recording or receiving the
                  information,

                        (ii) Does not unreasonably encumber Manager's or Sprint
                  PCS' operations (including, without limitation, Sprint PCS'
                  real-time monitoring of the Sprint PCS Network status,
                  including the Service Area Network),

                        (iii) Does not unreasonably threaten the security of the
                  Sprint PCS Network,

                                       8

                        (iv) Does not violate any law regarding the information,

                        (v) Complies with technical requirements applicable to
                  the Service Area Network,

                        (vi) Does not adversely affect any warranty benefiting
                  Manager or Sprint PCS (e.g., software warranties), and

                        (vii) With respect to the information processed through
                  Manager's equipment, including its switches, does not result
                  in a material breach of any agreement regarding the
                  information (e.g., national security agreements).

                  Sprint PCS and Manager will immediately notify the other party
            and reasonably cooperate to establish new procedures for allowing
            both Manager and Sprint PCS to access, monitor, record and receive
            the information in a manner that meets the criteria in clauses (i)
            through (vii) above if either Manager or Sprint PCS reasonably
            determines that the other party is accessing, monitoring, recording
            or receiving the information described in this section 1.9.1 in a
            manner that does not meet the criteria in clauses (i) through (vii)
            above.

                  Manager owns the information regarding the performance of its
            equipment. Each of Manager and Sprint PCS may use the information
            obtained under this section 1.9.1 for any reasonable internal
            business purpose, during the term of and after termination of this
            agreement, the Services Agreement and the Trademark License
            Agreements, so long as the use would be in accordance with those
            agreements if those agreements were still in effect.

                  1.9.2 CUSTOMER INFORMATION. Manager is entitled to receive
            information Sprint PCS accesses, monitors, records or receives
            concerning the Service Area Network or the Customers with NPA-NXXs
            assigned to Manager's Service Area, subject to the terms of this
            section 1.9.2 and section 1.9.3 and Manager's compliance with CPNI
            requirements and any other legal requirements applicable to the
            information.

                  Sprint PCS will provide the information in the format that
            Manager requests at no additional charge to Manager if Sprint PCS
            accesses, monitors, records, receives or reports for its own use the
            information specific to Manager that Manager requests in the same
            format as Manager requests. Sprint PCS will use commercially
            reasonable efforts to provide the information within 5 Business
            Days.

                                       9

                  Sprint PCS will provide the information in the format that
            Manager requests if Sprint PCS accesses, monitors, records, receives
            or reports for its own use the information that Manager requests,
            but not in the same format that Manager requests, if Manager agrees
            to pay or reimburse Sprint PCS for the costs Sprint PCS reasonably
            incurs. Sprint PCS will use commercially reasonable efforts to
            provide the requested information within 15 Business Days.

                  If Sprint PCS accesses, monitors, records or receives the
            information requested by Manager, but not in the same format that
            Manager requests, then Sprint PCS will provide the requested
            information as raw data, if:

                        (i) Sprint PCS chooses not to provide the information as
                  described in the preceding paragraph, and

                        (ii) Manager agrees to pay or reimburse Sprint PCS for
                  the costs Sprint PCS reasonably incurs.

            Sprint PCS will use commercially reasonable efforts to provide the
            raw data within 15 Business Days.

                  Sprint PCS owns the information regarding the Customers. Each
            of Manager and Sprint PCS may use the information obtained under
            this section 1.9.2 during the term of and after termination of this
            agreement, the Services Agreement and the Trademark License
            Agreements so long as the use would be in accordance with those
            agreements if those agreements were still in effect.

                  1.9.3 LIMITATIONS AND OBLIGATIONS. Sprint PCS does not have to
            provide any information that Manager reasonably requests under this
            agreement or the Services Agreement that:

                        (i) Manager can obtain itself in accordance with section
                  1.9.1 (if Sprint PCS has provided Manager with any necessary
                  specifications requested by Manager as to how to obtain the
                  information), unless Sprint PCS already has the information in
                  its possession and has not previously delivered it to Manager,

                        (ii) Sprint PCS no longer maintains,

                        (iii) Manager has already received from Sprint PCS or
                  its Related Parties,

                        (iv) Sprint PCS does not access, monitor, record,
                  receive or report, or

                                       10

                        (v) Sprint PCS must make system modifications to provide
                  the raw data, including without limitation modifying or adding
                  data fields or modifying code.

                  Sprint PCS will provide Manager a copy of the then-current
            Sprint PCS document retention policy from time to time upon
            reasonable request.

                  1.9.4 CONTRACTS. Sprint PCS will disclose to Manager the
            relevant terms and conditions of any agreement between Sprint PCS
            and any third party:

                        (i) with which Manager must comply, directly or
                  indirectly, under the Management Agreement, the Services
                  Agreement or any Program Requirement,

                        (ii) from which Manager is entitled to any benefit, or

                        (iii) that relate to any pass-through amounts that
                  Sprint PCS charges Manager under this agreement or
                  Settled-Separately Manager Expenses under the Services
                  Agreement.

            In each case Sprint PCS' disclosure will be in sufficient detail to
            enable Manager to determine the obligations or benefits with which
            Manager must comply or benefit or the charges or expenses to be paid
            by Manager. Sprint PCS may provide to Manager copies of the
            agreements or the relevant terms and conditions of such agreements
            in electronic format upon notice to Manager, including by posting
            the copies or relevant terms and conditions to a secure website to
            which Manager has access. Once each calendar year and from time to
            time when a change is effected to any relevant term or condition,
            Manager may request copies of the agreements that are not posted to
            the secure website or whose relevant terms and conditions are not
            posted to the secure website.

                  Sprint PCS will provide a copy of the agreement to Manager to
            the extent permissible by the terms of the agreement. Sprint PCS
            will allow Manager or its representatives to review a copy of the
            agreement to the extent permissible by the agreement if the
            agreement prohibits Sprint PCS from providing Manager a copy. Sprint
            PCS will satisfy the requirements of this section 1.9.4 if it
            chooses to provide a copy of the agreement in electronic form on a
            server that Sprint PCS designates. Sprint PCS will use commercially
            reasonable efforts to obtain the right from the third party, if
            required, to provide a complete copy to Manager of any agreement
            between Sprint PCS and any third party of the type described in this
            section 1.9.4.

                                       11

      6. MOST FAVORED NATION [ADDM X,SS.6; REVISED BY THIS ADDENDUM]. A new
section 1.10 is added to the Management Agreement:

            1.10 SUBSEQUENT AMENDMENTS TO OTHER MANAGERS' MANAGEMENT AGREEMENTS
      AND SERVICES AGREEMENTS. Manager has the right to amend the terms in its
      Management Agreement and Services Agreement as described in this section
      1.10 if during the period beginning on the date of this Addendum and
      ending December 31, 2006, any of the terms of a 3M-pops Manager's
      Management Agreement or Services Agreement are amended in any manner for
      any reason to be more favorable to the 3M-pops Manager than the terms of
      Manager's Management Agreement or Services Agreement are to Manager,
      subject to the following:

                  (a) All of the Alamosa Managers must elect to accept all, but
            not less than all, of the terms of the 3M-pops Manager's Management
            Agreement and Services Agreement agreed to since the Effective Date
            (including accepting existing terms that relate to the changes or
            terms that were previously changed and not previously accepted by
            Manager but that remain a part of the latest version of the 3M-pops
            Manager's agreement) (collectively, but excluding the changes
            described in paragraphs (b) and (c) below, the "OVERALL CHANGES"),

                  (b) Manager will not be required to accept any changes
            involving payment of specific disputed amounts arising under the
            Management Agreement or Services Agreement of the 3M-pops Manager,
            and

                  (c) No amendments in Manager's Management Agreement and
            Services Agreement will be made to reflect changes made in a 3M-pops
            Manager's Management Agreement and Services Agreement if such
            changes are:

                        (i) made solely because the 3M-pops Manager owns
                  spectrum on which all or a portion of its network operates,
                  unless the 3M-pops Manager acquired this spectrum from Sprint
                  PCS or its Related Parties after the Effective Date, or

                        (ii) compelled by a law, rule or regulation that applies
                  to the 3M-pops Manager, but not to Manager, or

                        (iii) made solely to modify the build-out plan.

            Sprint PCS will prepare and deliver to Manager either an addendum
      containing the Overall Changes that have been made to the 3M-pops
      Manager's agreements in all of its addenda or copies of the 3M-pops

                                       12

      Manager's amended and restated Management Agreement, Services Agreement
      and Trademark License Agreements (in each case redacted to protect the
      identity of the 3M-pops Manager) within 10 Business Days after the later
      of the effective date expressly stated in the addendum or other instrument
      containing these changes and the date of the addendum or other instrument.
      Manager then has 30 days to notify Sprint PCS that Manager wants the
      Overall Changes.

            If Manager does not notify Sprint PCS in this 30-day time period in
      writing that it wants the Overall Changes, no changes will be made in the
      agreements between Manager and Sprint PCS and Manager will be deemed to
      have waived its rights under this section 1.10 with respect to the Overall
      Changes.

            If Manager notifies Sprint PCS within the 30-day period in writing
      that it wants the Overall Changes, Sprint PCS will prepare, execute and
      deliver to Manager an addendum reflecting the Overall Changes. The new
      addendum will have the same effective date as the addendum or the restated
      Management Agreement, Services Agreement and Trademark License Agreements
      between Sprint PCS and the 3M-pops Manager that gave rise to the new
      addendum. For purposes of clarification, if the addendum or other
      instrument between Sprint PCS and the 3M-pops Manager provides or defines
      a specific date that is the effective date of that addendum or other
      instrument then the effective date of the new addendum will be the same as
      that specific date. Manager will have 15 days to review the new addendum
      and notify Sprint PCS if Manager determines any inaccuracies are reflected
      in the new addendum. Sprint will correct those inaccuracies and provide a
      corrected new addendum to Manager within 10 Business Days after Manager's
      notification.

            No changes will be made in the agreements between Manager and Sprint
      PCS if all the Alamosa Managers do not execute and return their respective
      signed addenda within 30 days after receipt of the signed addenda (or the
      corrected signed addenda, if applicable, pursuant to the previous
      paragraph), in which case Manager will be deemed to have waived its rights
      under this section 1.10 with respect to the Overall Changes contained in
      the addendum presented.

            If Manager and Sprint PCS disagree as to whether the terms of the
      signed addendum accurately reflect the Overall Changes, then the parties
      will submit to binding arbitration in accordance with section 14.2,
      excluding the escalation process set forth in section 14.1. If the arbiter
      rules in favor of Manager, then Sprint PCS will make changes to the signed
      addendum that are necessary to reflect the arbiter's ruling and submit the
      revised signed addendum to Manager within 10 days after

                                       13

      receipt of the arbiter's ruling. If the arbiter rules in favor of Sprint
      PCS, then Manager will execute the signed addendum as proffered to Manager
      within 10 days after Manager's receipt of the arbiter's ruling.

            The parties acknowledge that Sprint PCS can disclose to Manager who
      the 3M-pops Manager is that gave rise to the proposed addendum only if the
      3M-pops Manager agrees to the disclosure.

      7. MODIFICATION OF BUILD-OUT PLAN [ADDM VIII, SS.2]. The Exhibit 2.1
Build-Out Plan Table is superseded and replaced by the Exhibit 2.1 Build-Out
Plan Table attached to Addendum VIII.

      8. EXCLUSIVITY OF SERVICE AREA [ADDM V,SS.5]. In section 2.3 and the
Schedule of Definitions, the phrase "wireless mobility communications network"
is replaced by the phrase "Wireless Mobility Communications Network".

      9. COVERAGE ENHANCEMENT [ADDM I,SS.1 AND ADDM X,SS.9]. Section 2.5 is
replaced by the following language:

            2.5 MANAGER'S RIGHT OF FIRST REFUSAL FOR NEW COVERAGE BUILD-OUT.
      Sprint PCS grants to Manager the right of first refusal to build-out New
      Coverage. Sprint PCS will give to Manager a written notice of a New
      Coverage within the Service Area that Sprint PCS decides should be
      built-out. Manager must communicate to Sprint PCS within 90 days after
      receipt of the notice whether it will build-out the New Coverage.

            If Manager decides to build-out the New Coverage then Manager and
      Sprint PCS will diligently negotiate and execute an amendment to the
      Build-out Plan and proceed as set forth in sections 2.1 and 2.2. The
      amended Build-out Plan will contain critical milestones that provide
      Manager a commercially reasonable period in which to implement coverage in
      the New Coverage. In determining what constitutes a "commercially
      reasonable period" as used in this paragraph, the parties will consider
      several factors, including local zoning processes and other legal
      requirements, weather conditions, equipment delivery schedules, the need
      to arrange additional financing, and other construction already in
      progress by Manager. Manager will construct and operate the network in the
      New Coverage in accordance with the terms of this agreement.

            If Manager (i) does not communicate to Sprint PCS within such 90-day
      period that it will build out the New Coverage, (ii) fails to agree with
      Sprint PCS upon the amended Build-Out Plan, or (iii) fails to build-out
      the New Coverage in accordance with the amended Build-Out Plan, then
      Sprint PCS shall be entitled to (A) build-out the New Coverage itself or
      allow a Sprint PCS Related Party to do so, or (B) offer third parties
      (including Other Managers) the right to build-out the New Coverage on

                                       14

      terms and conditions that are no more favorable than those that were
      offered to and rejected by Manager. If (x) neither Sprint PCS, a Sprint
      PCS Related Party, nor any third party (with respect to such third party,
      on terms and conditions that are no more favorable than those that were
      offered to and rejected by Manager) commits to build-out such New Coverage
      within 150 days of the original communication to Manager with respect
      thereto, or (y) more favorable terms and conditions than those that were
      offered to and rejected by Manager are offered to any third party to
      build-out the New Coverage, then any build-out of such New Coverage shall
      again be subject to Manager's right of first refusal (and, if applicable,
      on such more favorable terms and conditions).

            Sprint PCS has the right, in a New Coverage that it constructs or
      that is constructed by a third party, to manage the network, allow a
      Sprint PCS Related Party to manage the network, or hire a manager to
      operate the network in the New Coverage. Any New Coverage that Sprint PCS
      or a third party builds out is deemed removed from the Service Area and
      the Service Area Exhibit is deemed amended to reflect the change in the
      Service Area. If Manager does not exercise its right of first refusal with
      respect to a New Coverage, Manager's right of first refusal does not
      terminate with respect to the remainder of the Service Area.

      10. LONG DISTANCE PRICING [ADDM X,SS.10]. Section 6 of Addendum I is
deleted. Additionally, section 3.4 of the Management Agreement is amended and
restated in its entirety to read as follows:

            3.4 IXC SERVICES.

            3.4.1. CUSTOMER LONG DISTANCE. Sprint PCS and Manager will from time
      to time mutually define local calling areas in the Service Areas of
      Manager that Sprint PCS and Manager will use to determine when a customer
      will be billed for a "long distance call" under the applicable rate plan
      of the Customer. The parties acknowledge that these local calling areas
      (i) may change in geographic scope in response to competitive pressures or
      perceived market opportunities, and (ii) may not be able to be changed
      because of regulatory, industry, or system limitations. The parties will
      not use local calling areas to determine "long distance telephony
      services" under section 3.4.2. If the parties cannot agree on the extent
      of the local calling area they will resolve the matter through the dispute
      resolution process in section 14.

            3.4.2. LONG DISTANCE SERVICES

            (a) Required purchase. Manager must obtain (i) long-distance
      telephony services through Sprint PCS or its Related Parties to provide
      long-distance service to users of the Sprint PCS Network and (ii)
      telephony services through Sprint PCS or its Related Parties to connect
      the Service Area Network with the national platforms that Sprint PCS uses
      to

                                       15

      provide services to Manager under this agreement or the Services
      Agreement. The term "long distance telephony service" means any inter-LATA
      call for purposes of this section 3.4.2 as it relates to long-distance
      telephony services provided to users of the Sprint PCS Network.

            (b) Pricing and procedure. Sprint PCS will purchase for Sprint PCS,
      Manager and Other Managers long-distance telephony services used in the
      Sprint PCS Network from Sprint Communications Company L.P. or its Related
      Parties ("SCCLP"). Sprint PCS will purchase these long-distance telephony
      services at a price and terms at least as favorable to Sprint PCS, Manager
      and the Other Managers (considering Sprint PCS, Manager and the Other
      Managers as a single purchaser) as the best prices and terms SCCLP offers
      to any wholesale customer of SCCLP in similar situations when taking into
      account all relevant factors (e.g., volume, peak/off-peak usage, length of
      commitment). Sprint PCS will pay the invoice from SCCLP, except for items
      that SCCLP directly bills under section 3.4.2(c). Sprint PCS will bill to
      Manager as an activity settled separately under the Services Agreement the
      portion of the fees billed to Sprint PCS that relate to Manager's
      operations and the activity of all Customers and Reseller Customers in the
      Service Area, except for items SCCLP directly bills under section
      3.4.2(c).

            If Sprint Corporation no longer has its "PCS" tracking stock, Sprint
      PCS will include the volume of long-distance telephony services of Manager
      and Other Managers with the volume of Sprint PCS when negotiating the
      Sprint PCS rate with the long distance division of Sprint Corporation
      (currently SCCLP). The long distance division will continue to provide
      long-distance telephony services to Sprint PCS for a price and upon terms
      based on the same relevant factors described in the preceding paragraph
      and in the same manner that it has under the present tracking stock
      policy.

            (c) Call routing. Manager, acting as a single purchaser, may
      purchase private line capacity (or other forms of capacity) from SCCLP for
      inter-LATA calls to the extent that this capacity can be obtained on terms
      more favorable to Manager (acting as a single purchaser). SCCLP will sell
      that capacity to Manager at the best price that SCCLP offers to third
      parties in similar situations when taking into account all relevant
      factors. SCCLP will directly bill Manager for any purchase of capacity
      under this section 3.4.2(c). The terms of section 1.3 do not apply to
      purchases of capacity in this section 3.4.2(c).

            (d) Pre-existing agreement. If before the date Addendum IX to this
      agreement is signed, Manager is bound by an agreement for long distance
      services or an agreement for private line service and the agreement was
      not made in anticipation of this agreement or Addendum IX, then the
      requirements of this section 3.4.2 do not apply during the term

                                       16

      of the other agreement. If the other agreement terminates for any reason,
      then the requirements of this section 3.4.2 do apply from and after the
      termination.

            (e) Resale. Manager may not resell the long-distance telephony
      services acquired under this section 3.4.2. For purposes of clarification,
      resale under this section 3.4.2(e) includes Manager selling minutes to
      carriers for ultimate resale to end users under a brand other than
      "Sprint" or selling minutes to end users under a brand other than
      "Sprint". Manager may engage in the following activities (i.e., these
      activities are not treated as resale of long-distance telephony services):

                  (1) the transport of long-distance calls for Customers under
            section 3.4.2(a),

                  (2) the transport of long-distance calls for resellers under
            section 3.5, and

                  (3) the transport of long-distance calls for roaming under
            section 4.3.

      11. VOLUNTARY RESALE OF PRODUCTS AND SERVICES [NEW]. Section 4 of Addendum
I is deleted. Schedule 1 attached to this Addendum replaces and supersedes the
heading, preamble, general terms and all attachments to the Program Requirement
3.5.2 dated August 13, 2002, which is labeled "Exhibit 3.5.2 Program Requirement
for Voluntary Resale of Products and Services By Voluntary Resellers Under the
Private Label Solutions Program". Program Requirement 3.5.2 - VMU which is
labeled "Exhibit 3.5.2 - VMU Program Requirements for Voluntary Resale of
Products and Services by Virgin Mobile USA, LLC (version 7/07/02)" continues in
effect, as amended from time to time, except its label is amended to read
"Program Requirement 3.5.2 - VMU Program Requirements for Resale of Products and
Services By Virgin Mobile USA, LLC (version 7/07/02)".

      Section 3.5.2 to the Management Agreement is amended and restated in its
entirety to read as follows:

            3.5.2 RESALE OF PRODUCTS AND SERVICES. Sprint PCS may choose to
      offer a resale product under which resellers will resell Sprint PCS
      Products and Services under brand names other than the Brands, except
      Sprint PCS may permit the resellers to use the Brands for limited purposes
      related to the resale of Sprint PCS Products and Services (e.g., to notify
      people that the handsets of the resellers will operate on the Sprint PCS
      Network). The resellers may also provide their own support services (e.g.,
      customer care and billing) or may purchase the support services from
      Sprint PCS. Other terms of the resale program are governed by Program
      Requirement 3.5.2.

            Manager will continue to participate in any resale arrangements
      that,

                                       17

      before April 1, 2004, Manager had opted into under to the Program
      Requirement 3.5.2, effective as of January 1, 2004, and before the
      amendment to the Program Requirement 3.5.2 by this Addendum, except that
      those resale arrangements will be governed by Program Requirement 3.5.2 as
      amended by this Addendum. Compensation for Manager's participation in
      these resale arrangements will be paid to Manager in accordance with
      section 10.4.1.1(a)(i) of this agreement, unless compensation was
      otherwise negotiated between Manager and Sprint PCS (e.g., Virgin Mobile
      USA).

            Manager will participate in all resale arrangements entered into,
      renewed or extended during the Required Resale Participation Period
      (regardless of whether Manager was participating in the resale arrangement
      on or before April 1, 2004) in all cases with compensation being paid to
      Manager as set forth in section 10.4.1.1(a)(ii) or (iii), whichever is
      applicable. Additionally, Manager will continue to support resale
      arrangements entered into, renewed or extended during the Required Resale
      Participation Period to the end of their respective terms. Sprint PCS
      agrees that the compensation, payment and other terms and conditions under
      each resale arrangement entered into, renewed or extended during the
      Required Resale Participation Period will be the same as the compensation,
      payment and other terms and conditions applicable to Sprint PCS and each
      Other Manager with respect to such reseller.

            The resale arrangement between Sprint PCS and Virgin Mobile USA will
      be treated as a new resale arrangement and subject to the compensation set
      forth in section 10.4.1.1(a)(ii) or (iii), whichever is applicable, if
      continued after the expiration of the initial term of the arrangement.

            Except as required under the regulations and rules concerning
      mandatory resale, Manager may not sell Sprint PCS Products and Services
      for resale unless Sprint PCS consents to such sales in advance in writing.

      12. INTRA-LATA CALLS AND BACKHAUL SERVICES [ADDM X,SS.12]. Section 3.7 is
amended and restated in its entirety to read as follows:

            3.7 INTRA-LATA CALLS AND BACKHAUL SERVICES. Manager, acting as a
      single purchaser, may purchase capacity (including private line capacity)
      from SCCLP for intra-LATA calls and backhaul services. SCCLP will sell
      that capacity to Manager at the best price that SCCLP offers to third
      parties in similar situations when taking into account all relevant
      factors.

            Manager will offer to Sprint PCS or one of its Related Parties the
      right to make to Manager the last offer to provide capacity for intra-LATA
      calls and backhaul services for the Service Area Network if:

                        (i) Manager decides to use third parties for intra-LATA
                  calls AND backhaul services rather than

                                       18

                  self-provisioning the capacity or purchasing the capacity from
                  Related Parties of Manager, and

                        (ii) Sprint PCS or one of its Related Parties has
                  provided evidence to Manager that SCCLP or one of its Related
                  Parties has facilities to provide the capacity requested.

      Manager will deliver to Sprint PCS the terms under which the third party
      will provide the capacity. Sprint PCS or one of its Related Parties will
      have a reasonable time to respond to Manager's request for last offer to
      provide pricing for capacity for intra-LATA calls and backhaul, which will
      be no greater than 5 Business Days after receipt of the request for the
      pricing and the third party's terms from Manager. Manager will acquire
      capacity for intra-LATA calls and backhaul services from Sprint PCS or one
      of its Related Parties if Sprint PCS or one of its Related Parties offers
      Manager pricing and other terms for intra-LATA calls and backhaul services
      for the Service Area Network that matches the terms, including pricing, or
      is better than the terms and lower than the pricing offered by the third
      party. For purposes of this section 3.7, the term "backhaul" means the
      provision of services from a cell site of Manager to the corresponding
      switch associated with the cell site.

            If Manager has an agreement for these services in effect as of the
      date Addendum IX is signed and the agreement was not made in anticipation
      of this agreement or Addendum IX, then the requirements of this section
      3.7 do not apply during the term of the other agreement. If the other
      agreement terminates for any reason, then the requirements of this section
      3.7 do apply from and after the termination.

      13. SPRINT PCS ROAMING AND INTER SERVICE AREA PROGRAM REQUIREMENTS [ADDM
X,SS.13]. The second paragraph of section 4.3 is amended to read as follows:

            Section 10.4.1 sets forth the settlement process that distributes
      between the members making up the Sprint PCS Network (i.e., Sprint PCS,
      Manager and all Other Managers) a fee for use of the Sprint PCS Network
      and the Service Area Network (the "INTER SERVICE AREA FEE").

      14. CHANGES TO PROGRAM REQUIREMENTS [ADDM X,SS.14]. (a) The first sentence
of section 9.2(e) is amended to read as follows:

            Manager must implement any changes in the Program Requirements
      within a commercially reasonable period of time unless otherwise consented
      to by Sprint PCS, subject to the terms of section 9.3.

      (b) Section 9.3 is amended to read as follows:

                                       19

            9.3 MANAGER'S RIGHTS REGARDING CHANGES TO PROGRAM REQUIREMENTS.

            9.3.1 PARAMETERS FOR REQUIRED PROGRAM REQUIREMENT IMPLEMENTATION.
      Manager has the right to decline to implement any new Program Requirement
      or any change to any existing Program Requirement (a "PROGRAM REQUIREMENT
      CHANGE") if Manager determines that any such Program Requirement Change,
      other than a change involving Sprint PCS National or Regional Distribution
      Program Requirements, will have an adverse impact on Manager that meets or
      exceeds the parameters set forth below in subparagraphs (a) through (d).
      For purposes of this section 9.3 a Program Requirement Change will include
      any change in any "guidelines," "policies," "standards" or
      "specifications" proposed by Sprint PCS under this agreement, the Services
      Agreement or either of the Trademark License Agreements, and the exercise
      by Sprint PCS of any unilateral right under those agreements, except
      changes to the Trademark Usage Guidelines, the Marketing Communications
      Guidelines, or the definition of Sprint PCS Products and Services (other
      than the pricing of those products and services, i.e. pricing is a Program
      Requirement Change). If Manager determines to decline to implement any
      Program Requirement Change, other than a change involving a national
      distribution program, then Manager must, within 10 days after Sprint PCS
      provides Manager with notice of the Program Requirement Change, give
      Sprint PCS (i) a written assessment of the impact of the Program
      Requirement Change on Manager using the parameters set forth in
      subparagraphs (a) through (d) below, and (ii) written notice that Manager
      declines to implement the Program Requirement Change. Manager may, without
      being deemed in default of this agreement, decline to implement any
      Program Requirement Change that will:

            (a) individually cause the combined peak negative cash flow of the
      Alamosa Managers to be an amount greater than 3% of Alamosa Holdings,
      Inc.'s Enterprise Value; or

            (b) when combined with the original assessments made in accordance
      with section 9.3.1(a) of all other Program Requirement Changes that Sprint
      PCS announced and the Alamosa Managers agreed to implement, both within
      the preceding 12 calendar months, cause the combined cumulative peak
      negative cash flow of the Alamosa Managers to be an amount greater than 5%
      of Alamosa Holdings, Inc.'s Enterprise Value; or

            (c) individually cause a decrease in the forecasted 5-year
      discounted cash flow of the Alamosa Managers (at the Alamosa Managers'
      appropriate discount rate) of more than 3% on a combined net present value
      basis; or

                                       20

            (d) when combined with the original assessments made in accordance
      with section 9.3.1(c) of all other Program Requirement Changes that Sprint
      PCS announced and Manager agreed to implement, both within the preceding
      12 calendar months, cause a decrease in the forecasted 5-year discounted
      cash flow of the Alamosa Managers (at the Alamosa Managers' appropriate
      discount rate) of more than 5% on a combined net present value basis.

            Manager may discuss with Sprint PCS in the manner described in
      section 9.7(c) any change that does not meet or exceed the parameters set
      forth in this section 9.3.1, except any change involving Sprint PCS
      National or Regional Distribution Program Requirements.

            9.3.2. DISAGREEMENT WITH ASSUMPTIONS OR METHODOLOGY. Sprint PCS must
      notify Manager of any disagreement with Manager's assumptions or
      methodology within 10 days after its receipt of Manager's assessment under
      section 9.3.1. Manager will not be required to implement the Program
      Requirement Change if Sprint PCS fails to notify Manager of any
      disagreement within such 10-day period unless Sprint PCS elects to require
      such compliance under section 9.3.3 below. Either party may escalate the
      review of the assumptions and methodology underlying the assessment to the
      parties' respective Chief Financial Officers if Sprint PCS disagrees with
      Manager's assessment and the parties are unable to agree on the
      assumptions and methodology within 20 days after Sprint PCS notifies
      Manager of the disagreement.

            The parties will mutually select an independent investment banker in
      the wireless telecommunications industry ("INVESTMENT BANKER") to
      determine whether the implementation of the Program Requirement Change
      will exceed one of the parameters if Sprint PCS and Manager are unable to
      agree on the assumptions and methodology to perform the calculations
      within 30 days after Sprint PCS notifies Manager of the disagreement. The
      American Arbitration Association will select the Investment Banker if the
      parties do not select the Investment Banker within 50 days after Sprint
      PCS notifies Manager of the disagreement. Sprint PCS and Manager will
      cooperate fully and provide all information reasonably requested by the
      Investment Banker; except that any Investment Banker selected by the
      American Arbitration Association, and its investment bank, must have no
      current engagement with either Manager or Sprint PCS and must not have
      been engaged by either such party within the 12 calendar months preceding
      the engagement under this section. A business relationship between Manager
      or Sprint PCS and a commercial bank or other organization affiliated with
      an investment bank will not disqualify the investment bank. Sprint PCS and
      Manager will cooperate fully and provide all information reasonably
      requested by the

                                       21

      Investment Banker. The Investment Banker will have 20 days from the date
      of engagement to make its decision.

            Manager will pay any Investment Banker's fees and implement the
      Program Requirement Change if the parties agree or the Investment Banker
      determines that implementing the Program Requirement Change will not
      exceed any of the parameters described in section 9.3.1.

            9.3.3 ONE OR MORE PARAMETERS EXCEEDED. Sprint PCS will pay the
      Investment Banker's fees if the parties agree or the Investment Banker
      determines that implementing the Program Requirement Change will exceed at
      least one of the parameters described in section 9.3.1. Sprint PCS may
      require Manager to implement the Program Requirement Change whether the
      parties agree or disagree or the Investment Banker determines that
      implementing the Program Requirement Change will exceed at least one of
      the parameters described in section 9.3.1, if Sprint PCS agrees to
      compensate Manager the amount necessary to prevent Manager from exceeding
      the parameters set forth in section 9.3.1.

            9.3.4 CHANGES WITH RESPECT TO PRICING PLANS AND ROAMING PROGRAM
      REQUIREMENTS. Manager will implement a Program Requirement Change in the
      manner requested by Sprint PCS that

                  (i) relates to a pricing plan under section 4.4 or roaming
            program and

                  (ii) Sprint PCS reasonably determines must be implemented on
            an immediate or expedited basis to respond to competitive market
            forces,

      notwithstanding Manager's determination that implementation of the Program
      Requirement Change will have an adverse impact on Manager that meets or
      exceeds the parameters set forth in section 9.3.1. Manager's
      implementation of the Program Requirement Change will not adversely affect
      Manager's right to object to the implementation of the Program Requirement
      Change. Manager will continue to comply with the Program Requirement
      Change if the parties agree or the Investment Banker determines that
      implementing the Program Requirement Change will not exceed any of the
      parameters described in section 9.3.1. If Sprint PCS does not successfully
      challenge Manager's assessment of the adverse impact of the Program
      Requirement Change on Manager in accordance with section 9.3.2, Sprint PCS
      can require Manager either to (i) continue to comply with the Program
      Requirement Change and compensate Manager in the amount necessary to
      reimburse Manager for any reasonable costs, expenses or losses that
      Manager incurred as a result of its implementation of the Program
      Requirement Change net of any benefit

                                       22

      received by Manager, to the extent the costs, expenses and losses net of
      the benefits exceed the parameters set forth in section 9.3.1 or (ii)
      terminate its continued compliance with the Program Requirement Change and
      compensate Manager in the amount necessary to reimburse Manager for any
      reasonable costs, expenses or losses that Manager incurred as a result of
      its implementation of the Program Requirement Change net of any benefit
      received by Manager. Manager cannot terminate its continued compliance if
      Sprint PCS elects to require Manager's continued compliance with the
      Program Requirement Change under section 9.3.3 above.

      (c) A new section 9.7 is added to the Management Agreement:

            9.7 MANDATORY REQUIREMENTS; UNILATERAL CHANGES.

            (a) Any "guidelines," "policies," "standards" or "specifications"
      previously issued by Sprint PCS are mandatory requirements with which
      Manager, the Other Managers and Sprint PCS must comply (subject to Sprint
      PCS' right to grant waivers as provided in Article 9 of this agreement),
      unless otherwise identified by Sprint PCS within 120 days after the date
      of Addendum IX.

            (b) Any changes to or new "guidelines," "policies," "standards" or
      "specifications" proposed by Sprint PCS under this agreement, the Services
      Agreement or either of the Trademark License Agreements are mandatory
      requirements with which Manager, the Other Managers and Sprint PCS must
      comply (subject to Sprint PCS' right to grant waivers as provided in
      Article 9 of this agreement). Sprint PCS will when issuing them reference
      the applicable section of this agreement, the Services Agreement, the
      Trademark License Agreements and if applicable, the Program Requirement to
      which they relate.

            (c) Sprint PCS and Manager will in good faith attempt to mutually
      agree on how to mitigate the adverse economic impact on Manager of the
      exercise of any unilateral right of Sprint PCS under this agreement, the
      Services Agreement and either Trademark License Agreement to the extent
      Manager believes such change will have a significant adverse economic
      impact on Manager's operations, except with respect to changes involving
      Sprint PCS National or Regional Distribution Program Requirements. For
      purposes of clarification, the parties intend the preceding sentence to
      obligate them to a robust discussion and open dialogue but understand the
      discussion and dialogue may not lead to any particular solution of the
      issues raised by Manager or Sprint PCS. By way of illustration, under the
      second preceding sentence if Manager believed that the exercise of the
      unilateral right to change the Trademark Usage Guidelines or the
      designation of Sprint PCS Products and Services had an

                                       23

      adverse economic impact on Manager, then Manager and Sprint PCS will in
      good faith attempt to mutually agree on how to mitigate the adverse impact
      on Manager.

      (d) A new section 9.8 is added to the Management Agreement.

            9.8 BREACH FOR FAILURE TO IMPLEMENT PROGRAM REQUIREMENT.

            Manager will be in material breach of a material term and Sprint PCS
      may exercise its rights under section 11 if Manager declines to implement
      a Program Requirement when required to do so under this agreement.

      15. FEES [ADDM X,SS.15; REVISED BY THIS ADDENDUM]. (a) Article 10 of the
Management Agreement is amended and restated in its entirety to read as follows:

                                    10. FEES

            10.1 GENERAL. Sprint PCS and Manager will pay to each other the fees
      and apply the credits in the manner described in this section 10. The
      amounts that Sprint PCS is paid or retains are for all obligations of
      Manager under this agreement. Many of the definitions for the fees in
      section 10.2 are found in section 10.3.

            10.2 FEES.

                    10.2.1 FEE BASED ON BILLED REVENUE. Sprint PCS will pay to
      Manager the Fee Based on Billed Revenue as determined in this section
      10.2.1.

                    "BILLED REVENUE" is all customer account activity (e.g., all
      activity billed, attributed or otherwise reflected in the customer account
      but not including Customer Credits) during the calendar month for which
      the fees and payments are being calculated (the "BILLED MONTH") for Sprint
      PCS Products and Services related to all Customer accounts within a
      customer service area ("CSA") assigned to the Service Area, except (i)
      Outbound Roaming Fees, (ii) amounts handled separately in this section 10
      (including the amounts in sections 10.2.3 through 10.2.6, 10.4 and 10.8),
      (iii) amounts collected from Customers and paid to governmental or
      regulatory authorities (e.g., Customer Taxes and USF Charges), and (iv)
      other amounts identified in this agreement as not included in Billed
      Revenue (these Customer accounts being "MANAGER ACCOUNTS").

                    Billed Revenue does not include new activity billed to the
      Customer solely to recover costs incurred by Sprint PCS, Manager or both

                                       24

      related solely to such new activity. Manager and Sprint PCS will share the
      revenues from this billing in proportion to the costs they incur.

            For purposes of clarification, the parties have in place procedures
      to assign Customers to CSAs and expect those procedures to remain in place
      after the Effective Date.

            If Sprint PCS or Manager develops products or services that bundle
      Sprint PCS Products and Services with other products or services (e.g.,
      local service or broadband wireline service), then Sprint PCS and Manager
      will use commercially reasonable efforts to agree on the proper allocation
      of revenue, bad debt expenses, credits and promotions for the bundled
      products and services.

            Sprint PCS will reasonably determine the amount of credits applied
      to Manager Accounts during the Billed Month ("CUSTOMER CREDITS").

            "NET BILLED REVENUE" for a Billed Month is the amount of the Billed
      Revenue less the Customer Credits.

            The "FEE BASED ON BILLED REVENUE" for a Billed Month is equal to 92%
      of (a) Net Billed Revenue, less (b) the Allocated Write-offs for Net
      Billed Revenue.

            10.2.2 OUTBOUND ROAMING FEE. Sprint PCS will pay to Manager a fee
      equal to the amount of Outbound Roaming Fees that Sprint PCS or its
      Related Parties bills to Manager Accounts, less the Allocated Write-offs
      for Outbound Roaming Fees. For purposes of clarification, Sprint PCS will
      settle separately with Manager the direct cost of providing the capability
      for the Outbound Roaming, including any amounts payable to the carrier
      that handled the roaming call and the clearinghouse operator for Outbound
      Roaming.

            10.2.3 PHASE II E911 SURCHARGES. Sprint PCS will pay to Manager a
      fee equal to a portion of the E911 Phase II Surcharges (attributable to
      incremental costs for Phase II E911, including but not limited to related
      handset costs, routing costs, implementation costs, trunks and testing
      costs, and anticipated write-offs for bad debt) billed during the Billed
      Month to Customers with an NPA-NXX assigned to the Service Area, less the
      Allocated Write-offs for that portion of E911 Phase II Surcharges in the
      Billed Month. The portion of the billed amount attributed to Manager will
      be based on Manager's proportional cost (as compared to Sprint PCS'
      proportional cost) to comply with Phase II of the E911 requirements.
      Sprint PCS will determine from time to time the rate billed to Customers
      related to Phase II E911 and the portion payable to Manager.

                                       25

            10.2.4 WIRELESS LOCAL NUMBER PORTABILITY SURCHARGES. Sprint PCS will
      pay to Manager a fee equal to a portion of the Wireless Local Number
      Portability Surcharges ("WLNP SURCHARGES") billed during the Billed Month
      to Customers with an NPA-NXX assigned to the Service Area, less the
      Allocated Write-offs for that portion of the WLNP Surcharges in the Billed
      Month. The portion of the billed amount attributed to Manager will be
      based on Manager's proportional cost (as compared to Sprint PCS'
      proportional cost) to comply with Wireless Local Number Portability
      requirements. Sprint PCS will determine from time to time the rate billed
      to Customers related to WLNP Surcharges and the portion payable to
      Manager.

            10.2.5 CUSTOMER EQUIPMENT CREDITS. Sprint PCS will apply as a credit
      to any other fees under this section 10.2 owing by Sprint PCS to Manager
      an amount equal to the amount of the Customer Equipment Credits less the
      Allocated Write-offs for Customer Equipment Credits.

            10.2.6 WRITE-OFFS FOR CUSTOMER EQUIPMENT CHARGES. Sprint PCS will
      apply as a credit to any other fees under this section 10.2 owing by
      Sprint PCS to Manager an amount equal to the amount of the Allocated
      Write-offs for Customer Equipment Charges.

            10.3 DEFINITIONS USED IN FEE CALCULATIONS

            10.3.1 WRITE-OFFS. Sprint PCS will determine the amounts written off
      net of deposits applied (the "WRITE-OFFS") in the Sprint PCS billing
      system during the Billed Month relating to Manager Accounts.

            10.3.2 BILLED COMPONENTS. Each of the following amounts is referred
      to as a "BILLED COMPONENT" and collectively they are referred to as the
      "BILLED COMPONENTS".

            10.3.2.1 Net Billed Revenue. The amount determined as described in
      section 10.2.1.

            10.3.2.2 Customer Equipment Credits. The reductions of amounts
      billed to Manager Accounts related to the sale of handsets and handset
      accessories from Sprint PCS inventory are referred to as "CUSTOMER
      EQUIPMENT CREDITS". This is a negative amount that reduces the Amount
      Billed (Net of Customer Credits).

            10.3.2.3 100% Affiliate Retained Amounts. The amounts referred to as
      "100% Affiliate Retained Amounts" on Exhibit 10.3, to which Manager is
      entitled to 100% of the amounts that Customers are billed for such items.

                                       26

            10.3.2.4 100% Sprint PCS Retained Amounts. The amounts referred to
      as "100% Sprint PCS Retained Amounts" on Exhibit 10.3, to which Sprint PCS
      is entitled to 100% of the amounts that Customers are billed for such
      items.

            10.3.2.5 Customer Equipment Charges. The amounts that Sprint PCS
      bills to Manager Accounts for subscriber equipment and accessories sold or
      leased are referred to as "CUSTOMER EQUIPMENT CHARGES".

            10.3.2.6 E911 Phase II Surcharges. The amounts that Sprint PCS bills
      to Manager Accounts to recover all costs related to Phase II E911
      functionality are referred to as "E911 PHASE II SURCHARGES".

            10.3.2.7 USF Charges. The amounts that Sprint PCS bills to Manager
      Accounts relating to Universal Service Funds are referred to as "USF
      CHARGES".

            10.3.2.8 WLNP Surcharges. The amounts that Sprint PCS bills to
      Manager Accounts to recover costs related to WLNP activities.

            10.3.3 AMOUNT BILLED (NET OF CUSTOMER CREDITS). The "AMOUNT BILLED
      (NET OF CUSTOMER CREDITS)" for a Billed Month is equal to the sum of the
      Billed Components.

            10.3.4 THE ALLOCATED WRITE-OFFS. The "ALLOCATED WRITE-OFFS" for all
      or a portion of a Billed Component in a Billed Month is the Write-offs for
      the Billed Month times the amount of the Billed Component (or portion
      thereof) divided by the Amount Billed (Net of Customer Credits).

            10.4 OTHER FEES AND PAYMENTS. Sprint PCS and Manager will pay to
      each other the fees and payments described below:

            10.4.1 INTER SERVICE AREA FEES AND RESELLER CUSTOMER FEES.

            10.4.1.1 Inter Service Area Fee and Reseller Customer Fee Paid.
      Manager will pay to Sprint PCS an Inter Service Area Fee as set forth in
      this section 10.4.1 for each billed minute or kilobyte of use that a
      Customer with an NPA-NXX assigned to the Service Area uses a portion of
      the Sprint PCS Network other than the Service Area Network. Sprint PCS
      will pay to Manager an Inter Service Area Fee for each billed minute or
      kilobyte of use that a Customer whose NPA-NXX is not assigned to the
      Service Area Network uses the Service Area Network.

                                       27

                  (a) Sprint PCS will pay to Manager the fees set forth in this
            Section 10.4.1 for each billed minute or kilobyte of use that a
            Reseller Customer uses the Service Area Network unless otherwise
            negotiated (such fees are referred to in this agreement as "RESELLER
            CUSTOMER FEES"):

                        (i) with respect to arrangements between Sprint PCS and
                  resellers in existence as of April 1, 2004, that Manager has
                  opted into, other than Virgin Mobile USA, the amount of fees
                  set forth in subsections 10.4.1.2 and 10.4.1.3, and with
                  respect to Virgin Mobile USA, the amount of fees set forth in
                  Program Requirement 3.5.2-VMU; except, that the resale
                  arrangement between Sprint PCS and Virgin Mobile USA will each
                  be treated as a new resale arrangement and subject to the
                  compensation set forth in section 10.4.1.1(a)(ii) or (iii),
                  whichever is applicable, if continued after the expiration of
                  the initial term of the arrangement;

                        (ii) with respect to arrangements between Sprint PCS and
                  resellers that are entered into after April 1, 2004 and before
                  January 1, 2007, or that are renewed or extended during that
                  period, the amount of fees collected by Sprint PCS from the
                  resellers as payment for the Reseller Customer's use of the
                  Service Area Network; and

                        (iii) with respect to arrangements between Sprint PCS
                  and resellers that are entered into, renewed or extended
                  during the three-year period beginning on January 1, 2007, or
                  a subsequent three-year period beginning on the third
                  anniversary of the beginning of the previous three-year
                  period, the amount of fees determined as described in section
                  10.4.1.1(c).

                  (b) With respect to resale arrangements described in section
            10.4.1.1(a)(ii), Sprint PCS will give Manager Manager's proportional
            share of (i) any cash payments, in addition to the reseller rate,
            relating specifically to the resale arrangements (other than those
            cash payments for reimbursement of expenses incurred to implement
            the resale arrangement), and (ii) to the extent reasonably able to
            be made available to Manager, non-cash payments relating
            specifically to the resale arrangements. For purposes of
            clarification, payments made to Sprint PCS by the other party to a
            resale arrangement to reimburse Sprint PCS for actual costs incurred
            to implement some aspect of the resale arrangement are not cash or
            non-cash payments subject to this section. Each resale arrangement
            will provide that the other party

                                       28

            to the resale arrangement will reimburse Manager for Manager's
            actual costs incurred to implement the resale arrangement if (A)
            Sprint PCS obtains from the other party to the resale arrangement a
            commitment for that party to reimburse Sprint PCS for Sprint PCS'
            actual costs of implementing the resale arrangement and (B) Sprint
            PCS reasonably expects Manager to incur actual costs in implementing
            the resale arrangement for the reseller.

                  If the reseller is a Related Party of Sprint PCS, then Sprint
            PCS, Manager and all Other Managers must agree on the Reseller
            Customer Fee to be paid by Sprint PCS to Manager and all Other
            Managers and any proportional sharing of any other cash and non-cash
            payments. If Manager does not so agree in writing with any such
            reseller arrangement with a Related Party of Sprint PCS, then
            Manager will have no obligation to opt into or support such reseller
            arrangement.

                  (c) For each three-year period described in section
            10.4.1.1(a)(iii):

                        (i) Sprint PCS will give Manager proposed terms, fees
                  and conditions applicable to Manager's participation in resale
                  arrangements by October 31 of the calendar year before the
                  calendar year in which the then current reseller period ends
                  (e.g., the initial reseller period ends on December 31, 2006
                  so the amount has to be presented by October 31, 2005).
                  Manager's representative and the Sprint PCS representative
                  will begin discussions regarding the proposed terms, fees and
                  conditions applicable to Manager's participation in resale
                  arrangements within 20 days after Manager receives the
                  proposed terms, fees and conditions applicable to Manager's
                  participation in resale arrangements from Sprint PCS.

                        (ii) If the parties do not agree on the new terms, fees
                  and conditions applicable to Manager's participation in resale
                  arrangements within 30 days after the discussions begin, then
                  Manager may escalate the discussion to the Sprint PCS Chief
                  Financial Officer or Sprint Spectrum may escalate the
                  discussion to Manager's Chief Executive Officer or Chief
                  Financial Officer.

                        (iii) If the parties cannot agree on the new terms, fees
                  and conditions applicable to Manager's participation in resale
                  arrangements through the escalation process within 20 days
                  after the escalation process begins, then without Manager's
                  prior written consent, Manager will not be

                                       29

                  required to participate in any resale arrangement that is
                  entered into by Sprint PCS, or renewed or extended, after the
                  Required Resale Participation Period. Manager will, however,
                  continue to allow resellers with executed contracts under
                  resale arrangements existing prior to or entered into, renewed
                  or extended during the Required Resale Participation Period,
                  with which Manager opted into or was required to participate
                  under this agreement, to activate subscribers with an NPA-NXX
                  assigned to Manager's Service Area and support such resellers
                  throughout the then remaining term of their resale arrangement
                  with Sprint PCS, including any applicable renewal terms and
                  phase out periods. Manager will continue to receive Reseller
                  Customer Fees with respect to such resale arrangements at the
                  same rates in effect at the end of the Required Resale
                  Participation Period.

            Sprint PCS may not amend, modify or change in any manner the Inter
      Service Area Fees between Sprint PCS and Manager or Reseller Customer Fees
      and other matters set forth in this section 10.4.1 without Manager's prior
      written consent, except as expressly provided in this section. For
      purposes of clarification, the parties do not intend the above sentence to
      limit Sprint PCS' ability to negotiate fees with resellers.

            Sprint PCS will not be obligated to pay Manager those Inter Service
      Area Fees not received by Sprint PCS from an Other Manager who is a debtor
      in a bankruptcy proceeding with respect to Inter Service Area Fees that
      Sprint PCS owes Manager because of CSAs assigned to such Other Manager's
      Service Area traveling in the Service Area. For clarification purposes,
      Sprint PCS does not have to advance the Inter Service Area Fees for the
      Other Manager who is involved in the bankruptcy proceeding to Manager, to
      the extent that the Other Manager fails to pay the Inter Service Area
      Fees. Manager bears the risk of loss of the Other Manager who is involved
      in the bankruptcy proceeding not paying the Inter Service Area Fees to
      Sprint PCS.

            If relief is ordered under title 11 of the United States Code for an
      Other Manager or an Other Manager files a voluntary petition for relief
      under title 11 of the United States Code and such Other Manager fails to
      pay to Sprint PCS amounts that such Other Manager owes to Sprint PCS with
      respect to the Inter Service Area Fees for travel into Manager's Service
      Area, Sprint PCS will immediately assign to Manager all of its claims and
      rights as a creditor of such Other Manager for those amounts owed with
      respect to Inter Service Area Fees for travel in Manager's Service Area.
      Sprint PCS agrees to take all actions necessary to effect this assignment
      of rights to Manager, and further agrees that Manager will not be
      responsible for any expenses related to such

                                       30

      assignment. If Sprint PCS receives any amounts from an Other Manager
      involved in a bankruptcy proceeding with respect to Inter Service Area
      Fees for travel into the Service Area, Sprint PCS will immediately remit
      those amounts to Manager. If relief is ordered under title 11 of the
      United States Code for Sprint PCS or Sprint PCS files a voluntary petition
      for relief under title 11 of the United States Code, then Sprint PCS will
      be deemed a trustee for Manager's benefit with respect to any Inter
      Service Area Fees that Sprint PCS collects from Other Managers for travel
      into Manager's Service Area, and Sprint PCS has no rights to Manager's
      portion of such Inter Service Area Fees.

            Manager acknowledges that if the manner in which the CSAs are
      assigned changes because of changes in the manner in which the NPA-NXX is
      utilized, the manner in which the Inter Service Area Fees and Reseller
      Customer Fees, if any, will be calculated might be changed accordingly.

            10.4.1.2 Voice and 2G Data Rate. The amount of the Inter Service
      Area Voice and 2G Data Fee and Reseller Customer Voice and 2G Data Fee for
      arrangements between Sprint PCS and resellers in existence as of April 1,
      2004, will be as follows:

                  (a) The Inter Service Area Voice and 2G Data Fee for each
            billed minute of use that a Customer uses an Away Network and the
            Reseller Customer Fee for each billed minute of use that a Reseller
            Customer uses the Service Area Network, will be $0.058 from the
            Effective Date to December 31, 2006.

                  (b) For each calendar year during the Term of this agreement
            beginning January 1, 2007, the Inter Service Area Voice and 2G Data
            Fee for each billed minute of use that a Customer uses an Away
            Network and the Reseller Customer Fee for each billed minute of use
            that a Reseller Customer uses the Service Area Network, will be an
            amount equal to 90% of Sprint PCS' Retail Yield for Voice and 2G
            Data Usage for the previous calendar year; provided that such amount
            for any period will not be less than Manager's network costs
            (including a reasonable return using Manager's weighted average cost
            of capital applied against Manager's net investment in the Service
            Area Network) to provide the services that are subject to the Inter
            Service Area Voice and 2G Data Fee. If the parties have a dispute
            relating to the determination of the foregoing fees for any period,
            then the parties will submit the dispute to binding arbitration as
            set forth in section 10.4.1.3(b).

            10.4.1.3 3G Data Rate. The amount of the Inter Service Area 3G Data
      Fee and Reseller Customer 3G Data Fee for

                                       31

arrangements between Sprint PCS and resellers in existence as of April 1, 2004,
will be as follows:

                  (a) From the Effective Date to December 31, 2006 ("INITIAL 3G
            DATA FEE PERIOD"), the Inter Service Area 3G Data Fee for each
            kilobyte of use that a Customer uses an Away Network and the
            Reseller Customer 3G Data Fee for each kilobyte of use that a
            Reseller Customer uses the Service Area Network, will be $0.0020;
            except with respect to Sprint 3G Data Service as defined and set out
            in the Program Requirement 3.5.2.

                  (b) The parties will reset the Inter Service Area 3G Data Fee
            and the Reseller Customer 3G Data Fee after the Initial 3G Data Fee
            Period ends. The Inter Service Area 3G Data Fee and the Reseller
            Customer 3G Data Fee will be based on an appropriate discount from
            the Sprint PCS Retail Yield for 3G Data Usage for the previous
            calendar year to be negotiated before December 31, 2006. Each
            subsequent fee period will last three years with, for example, the
            second pricing period beginning on January 1, 2007 and ending on
            December 31, 2009.

                  The process for resetting the fees is as follows:

                        (i) Sprint PCS will give Manager a proposal for the
                  appropriate discount from the Sprint PCS Retail Yield for 3G
                  Data Usage by March 31 of the final year of the then current
                  pricing period. Manager's representative and the Sprint PCS
                  representative will begin discussions regarding the proposed
                  schedule of fees within 20 days after Manager receives the
                  proposed schedule of fees from Sprint PCS.

                        (ii) Manager may escalate the discussion to the Chief
                  Financial Officer of Sprint PCS or Sprint PCS may escalate the
                  discussion to Manager's Chief Executive Officer or Chief
                  Financial Officer if the parties do not agree on a new
                  schedule of fees within 30 days after the discussions begin.

                        (iii) If the parties cannot agree on a new schedule of
                  fees within 20 days after a party escalates the discussion,
                  then Manager may either agree to the fees set forth in the
                  Inter Service Area 3G Data Fee and Reseller Customer 3G Data
                  Fee proposal or submit the determination of the Inter Service
                  Area 3G Data Fee and Reseller Customer 3G Data Fee to binding
                  arbitration based on a market-rate determination of an
                  appropriate Inter Service Area 3G Data

                                       32

                  Fee and Reseller Customer 3G Data Fee in accordance with
                  section 14.2, excluding the escalation process set forth in
                  section 14.1.

                        (iv) If Manager submits the matter to arbitration the
                  fees that Sprint PCS proposed will apply starting after
                  December 31 of the first year of the appropriate period as
                  described in section 10.4.1.4 and will continue in effect
                  unless modified by the final decision of the arbitrator. If
                  the arbitrator imposes a fee different than the ones in effect
                  the new fees will be applied as if in effect after December 31
                  of the first year of the appropriate period as described in
                  section 10.4.1.4 and if on application of the new fees one
                  party owes the other party any amount after taking into
                  account payments the parties have already made then the owing
                  party will pay the other party within 30 days of the date of
                  the final arbitration order.

            10.4.1.4 Rate Changes - Effective Date. All rate changes related to
      Inter Service Area Fees and Reseller Customer Fees will be applied to all
      activity in a bill cycle regardless of when the activity occurred, if the
      bill cycle ends after the effective date of the rate change.

            10.4.1.5 Long Distance. The long distance rates associated with the
      Inter Service Area and Reseller Customer usage will be equal to the actual
      wholesale transport and terminating costs associated with the originating
      and terminating locations. The rates are then applied to cumulative usage
      at a BID level for settlement purposes.

            10.4.2 INTERCONNECT FEES. Manager will pay to Sprint PCS (or to
      other carriers as appropriate) monthly the interconnect fees, if any, as
      provided under section 1.4.

            10.4.3 TERMINATING AND ORIGINATING ACCESS FEE. Sprint PCS will pay
      Manager 92% of any terminating or originating access fees Sprint PCS
      collects from an IXC that are not subject to refund or dispute (but it
      will not be Billed Revenue). For purposes of clarification, Sprint
      Corporation's Related Parties are obligated to pay terminating access to
      Sprint PCS only if MCI and AT&T pay terminating or originating access to
      Sprint PCS. At the Effective Date of Addendum IX, neither MCI nor AT&T
      pays terminating access to Sprint PCS. The ability of wireless carriers to
      collect access fees is currently subject to legal challenge. The parties
      acknowledge that Sprint PCS has limited ability to require IXCs to pay
      access fees.

            10.4.4 REIMBURSEMENTS FOR MISTAKEN PAYMENTS. If one party mistakenly
      pays an amount that the other party is obligated to pay then the other
      party will reimburse the paying party, if the paying party

                                       33

      identifies the mistake and notifies the receiving party within 9 calendar
      months after the date on which the paying party makes the mistaken
      payment.

            10.5 TAXES AND PAYMENTS TO THE GOVERNMENT. Manager will pay or
      reimburse Sprint PCS for any sales, use, gross receipts or similar tax,
      administrative fee, telecommunications fee or surcharge for taxes or fees
      that a governmental authority levies on the fees and charges payable by
      Sprint PCS to Manager.

            Manager will report all taxable property to the appropriate taxing
      authority for ad valorem tax purposes. Manager will pay as and when due
      all taxes, assessments, liens, encumbrances, levies and other charges
      against the real estate and personal property that Manager owns or uses in
      fulfilling its obligations under this agreement.

            Manager is responsible for paying all sales, use or similar taxes on
      the purchase and use of its equipment, advertising and other goods or
      services in connection with this agreement.

            Sprint PCS will be solely responsible for remitting to government
      agencies or their designees any and all fees or other amounts owed as a
      result of the services provided to the Customers under the Management
      Agreement. As a consequence of this responsibility, Sprint PCS is entitled
      to 100% of any amounts that Manager, Sprint PCS or their Related Parties
      receives from Customers (including Customers whose NPA-NXX is assigned to
      the Service Area) relating to these fees or other amounts.

            10.6 UNIVERSAL SERVICE FUNDS.

            10.6.1 PAID BY GOVERNMENT. Manager is entitled to 100% of any
      federal and state subsidy funds (the "SUBSIDY FUNDS"), including Universal
      Service Funds, that Manager or Sprint PCS receives from government
      disbursements based on customers with mailing addresses located in the
      Service Area and with NPA-NXXs assigned to the Service Area, or such other
      method then in effect under the rules of the FCC, Universal Service
      Administrative Company or other federal or state administrator. For
      purposes of clarity, Universal Service Funds provide support payments to
      Eligible Telecommunications Carriers ("ETC") serving in high cost areas or
      providing services to low income individuals. Sprint PCS will file on
      behalf of itself or Manager appropriate ETC documentation in those
      jurisdictions in which Sprint PCS determines to make the filing.

            If Manager asks Sprint PCS to make a filing in a jurisdiction and
      Sprint PCS reasonably determines not to make the filing because making the
      filing is detrimental to Sprint's best interests, then Sprint does not
      have

                                       34

      to make the filing. If Manager disagrees with the reasonableness of Sprint
      PCS' determination not to make the filing, then the parties will submit to
      binding arbitration in accordance with section 14.2, excluding the
      escalation process set forth in section 14.1.

            If the process set forth in the previous paragraph results in Sprint
      PCS making a filing, Manager will pay all of Sprint PCS' reasonable
      out-of-pocket costs associated with the filing and any compliance
      obligations that arise from the filing or that are imposed by the
      jurisdiction in which the filing is made (e.g. filing fees, legal fees,
      expert witness retention, universal lifeline service, enhancing customer
      care quality, and including, without limitation, network upgrades). Sprint
      PCS will remit to Manager 50% of any Subsidy Funds that Sprint PCS
      receives from filings Sprint PCS is required to make under the preceding
      paragraph that are not payable to Manager under the first paragraph of
      this section 10.6.1, until the aggregate amount of the payments to Manager
      under this sentence equal 50% of the amount Manager has paid Sprint PCS
      under the preceding sentence.

            All Subsidy Funds received must be used to support the provision,
      maintenance and upgrading of facilities and services for which the funds
      are intended. Sprint PCS will attempt to recover from the appropriate
      governmental authority Subsidy Funds and will remit the appropriate
      recoveries to Manager.

            10.6.2 PAID BY CUSTOMERS. Sprint PCS will be solely responsible for
      remitting to government agencies or their designees, including but not
      limited to the Universal Service Administrative Company, all universal
      service fees. As a consequence of this responsibility, Sprint PCS is
      entitled to 100% of any amounts that Manager, Sprint PCS or their Related
      Parties receives from Customers (including Customers whose NPA-NXX is
      assigned to the Service Area) relating to the Universal Service Funds.

            10.7 EQUIPMENT REPLACEMENT PROGRAM. Sprint PCS is entitled to 100%
      of the amounts that Customers pay for participating in any equipment
      replacement program billed on their Sprint PCS bills. Manager will not be
      responsible for or in any way billed for any costs or expenses that Sprint
      PCS or any Sprint PCS Related Party incurs in connection with any such
      equipment replacement program.

            10.8 CUSTOMER EQUIPMENT. Sprint PCS is entitled to 100% of the
      amounts that Customers pay for subscriber equipment and accessories sold
      or leased by Sprint PCS, and Manager is entitled to 100% of the amounts
      that Customers pay for subscriber equipment and accessories that Manager
      sold or leased, subject to the equipment settlement process in section
      4.1.2.

                                       35

            10.9 PHASE I E911. Sprint PCS is entitled to collect 100% of the
      E911 Phase I Surcharges (e.g., for equipment other than handsets, such as
      platforms and networks). Sprint PCS will attempt to recover from the
      appropriate governmental authority Phase I E911 reimbursements and will
      remit the appropriate amounts to Manager.

            10.10 MANAGER DEPOSITS INTO RETAIL BANK ACCOUNTS. Each Business Day,
      Manager will deposit into bank accounts and authorize Sprint PCS or a
      Related Party that Sprint PCS designates to sweep from such accounts the
      amounts collected from Customers on behalf of Sprint PCS and its Related
      Parties for Sprint PCS Products and Services. Manager will allow the funds
      deposited in the bank accounts to be transferred daily to other accounts
      that Sprint PCS designates. Manager will also provide the daily reports of
      the amounts collected that Sprint PCS requires. Manager will not make any
      changes to the authorizations and designations Sprint PCS designates for
      the bank accounts without Sprint PCS' prior written consent.

            10.11 MONTHLY STATEMENTS.

            10.11.1 SECTION 10.2 STATEMENT. Each month Sprint PCS will determine
      the amount payable to or due from Manager for a Billed Month under section
      10.2. Sprint PCS will deliver a monthly statement to Manager that reports
      the amount due to Manager, the manner in which the amount was calculated,
      the amount due to Sprint PCS and its Related Parties under this agreement
      and the Services Agreement, and the net amount payable to or due from
      Manager.

            10.11.2 OTHER STATEMENTS. Sprint PCS will deliver a monthly
      statement to Manager that reports amounts due to Manager or from Manager,
      other than amounts described in section 10.12.1, the manner in which the
      amounts were calculated, the amount due to Manager or to Sprint PCS and
      its Related Parties under this agreement and the Services Agreement, and
      the net amount payable to Manager.

            10.11.3 THIRD PARTY CHARGES. Sprint PCS will include any third party
      charges on Manager's statements within three calendar months after the end
      of the calendar month during which Sprint PCS receives the third party
      charge. Sprint PCS' failure to include these charges on Manager's
      statements within the three calendar month-period will mean that Sprint
      PCS cannot collect those third party charges from Manager.

            10.12 PAYMENTS.

            10.12.1 WEEKLY PAYMENTS. Sprint PCS will pay the amount payable to
      Manager for a Billed Month under section 10.2 in equal

                                       36

      weekly payments on consecutive Thursdays beginning the second Thursday of
      the calendar month following the Billed Month and ending on the first
      Thursday of the second calendar month after the Billed Month. If Sprint
      PCS is unable to determine the amount due to Manager in time to make the
      weekly payment on the second Thursday of a calendar month, then Sprint PCS
      will pay Manager for that week the same weekly amount it paid Manager for
      the previous week. Sprint PCS will true-up any difference between the
      actual amount due for the first weekly payment of the Billed Month and
      amounts paid for any estimated weekly payments after Sprint PCS determines
      what the weekly payment is for that month. Sprint PCS will use reasonable
      efforts to true-up within 10 Business Days after the date on which Sprint
      PCS made the estimated weekly payment.

            10.12.2 MONTHLY PAYMENTS. The amounts payable to Manager and Sprint
      PCS and its Related Parties under this agreement and the Services
      Agreement, other than the payments described in section 10.12.1, will be
      determined, billed and paid monthly in accordance with section 10.12.3.

            10.12.3 TRANSITION OF PAYMENT METHODS. (a) Sprint PCS and Manager
      wish to conduct an orderly transition from making weekly payments to
      Manager based on Collected Revenues to weekly payments based on Billed
      Revenue. The method of calculating the weekly payments will change on the
      first day of the calendar month after the Effective Date of Addendum IX
      (the "TRANSITION DATE"). The weekly amounts paid to Manager during the
      calendar month before the Transition Date and on the first Thursday after
      the Transition Date will be based on the Collected Revenues method. The
      weekly amounts paid to Manager beginning on the second Thursday of the
      second calendar month after the Transition Date will be based on the
      Billed Revenue method described in this section 10. To effect an orderly
      transition, Sprint PCS will pay Manager for the period beginning on the
      second Thursday after the Transition Date and ending on the first Thursday
      of the calendar month after the Transition Date an amount calculated as
      described below in section 10.12.3(b).

            (b) Sprint PCS will apply the estimated collection percentages that
      Sprint PCS uses before the Transition Date to the gross accounts
      receivable aging categories for Customers with an NPA-NXX assigned to the
      Service Area as of the close of business on the day before the Transition
      Date to calculate the amount Sprint PCS anticipates collecting on those
      accounts receivable. Sprint PCS will pay Manager the amount estimated to
      be collected in equal weekly payments on consecutive Thursdays beginning
      the second Thursday after the Transition Date and ending the first
      Thursday of the calendar month after the Transition Date. Sprint PCS will
      also pay to Manager no later than the second Thursday after the Transition
      Date any Collected Revenues received after the Saturday before the
      Transition Date and before the

                                       37

      Transition Date.

            (c) Sprint PCS will recalculate the estimated collection percentages
      and apply the recalculated estimated collection percentages to the gross
      accounts receivable aging categories described in the first sentence of
      section 10.12.3(b) when all applicable data is available. Sprint PCS will
      increase or decrease a weekly payment by the amount of the difference
      between the amount paid to Manager based on the initial estimated
      collection percentages and the amount that would have been paid to Manager
      using the newer estimated collection percentages.

            10.13 DISPUTE OR CORRECTION OF STATEMENT AMOUNT. A party can only
      dispute or correct an amount on a statement in good faith. If a party
      disputes or corrects an amount on a statement, the disputing or correcting
      party must give the other party written notice of the specific item
      disputed or corrected, the disputed or corrected amount with respect to
      that item and the reason for the dispute or correction within three
      calendar months after the end of the calendar month during which the
      disputed or erroneous statement was delivered.

            Any dispute regarding a statement will be submitted for resolution
      under the dispute resolution process in section 14. The parties must
      continue to pay to the other party all amounts, except disputed amounts
      (subject to the next paragraph), owed under this agreement and the
      Services Agreement during the dispute resolution process. If the aggregate
      disputed amount, combined with any aggregate disputed amount under section
      10.14, exceeds $1,000,000, and upon the written request of the other
      party, the party disputing the amount (the "DISPUTING PARTY") will deposit
      the portion of the disputed amount in excess of $1,000,000 into an escrow
      account that will be governed by an escrow agreement in a form to be
      mutually agreed upon by the parties. The Disputing Party will deposit the
      amount into the escrow account within 10 Business Days after its receipt
      of the written request from the other party in accordance with the
      foregoing. If the Disputing Party complies with the requirements of this
      paragraph, then the other party or its Related Parties may not declare the
      Disputing Party in breach of this agreement or the Services Agreement
      because of nonpayment of the disputed amount, pending completion of the
      dispute resolution process.

            The escrow agent will be an unrelated third party that is in the
      business of serving as an escrow agent for or on behalf of financial
      institutions. The parties will share evenly the escrow agent's fees. The
      escrow agent will invest and reinvest the escrowed funds in
      interest-bearing money market accounts or as the parties otherwise agree.
      The escrow agent will disburse the escrowed funds in the following manner
      based on the determination made in the dispute resolution process:

                                       38

                  (a) If the Disputing Party does not owe any of the disputed
            amounts, then the escrow agent will return all of the escrowed funds
            to the Disputing Party with the interest earned on the escrowed
            funds.

                  (b) If the Disputing Party owes all of the disputed amounts,
            then the escrow agent will disburse all of the escrowed funds with
            the interest earned on the escrowed funds to the non-disputing
            party. If the interest earned is less than the amount owed based on
            the Default Rate, then the Disputing Party will pay the
            non-disputing party the difference between those amounts.

                  (c) If the Disputing Party owes a portion of the disputed
            amounts, then the escrow agent will disburse to the non-disputing
            party the amount owed with interest at the Default Rate from the
            escrowed funds and disburse the balance of the escrowed funds to the
            Disputing Party. The Disputing Party will pay the non-disputing
            party the amount owed for interest at the Default Rate if the amount
            of the escrowed funds is insufficient.

            Manager and Sprint PCS will take all reasonable actions necessary to
      allow the Disputing Party to continue to reflect the amounts deposited
      into the escrow account by the Disputing Party as assets in the Disputing
      Party's financial statements.

            The parties will use the dispute resolution process under section
      14.2 of this agreement, excluding the escalation process set forth in
      section 14.1, if they cannot agree on the form of escrow agreement.

            The parties agree that, despite this section 10.13, Manager will pay
      all disputed amounts due to Sprint PCS or any Related Party for fees for
      CCPU Services and CPGA Services payable under the Services Agreement for
      periods ending on or before December 31, 2006, subject to any other rights
      and remedies that Manager has under this agreement and the Services
      Agreement.

            The dispute of an item in a statement does not stay or diminish a
      party's other rights and remedies under this agreement, except that a
      party must complete the dispute resolution process in section 14 before
      taking any legal or equitable action against the other party.

            10.14 DISPUTE OR CORRECTION OF A THIRD PARTY INVOICE AMOUNT. Sprint
      PCS will include the applicable portion of any amount based on a third
      party invoice in a statement to Manager within three calendar months after
      Sprint PCS' receipt of the third party invoice. Sprint PCS' failure to
      include the amount in a statement to Manager within the three calendar
      month-period will mean that the third party charges will not be
      collectible

                                       39

      from Manager.

            A party can dispute or correct an amount based on a third party
      invoice only in good faith. Modified invoices received by Sprint PCS from
      a third party vendor and then sent by Sprint PCS to Manager will be
      treated as a new statement for purposes of this section, so long as the
      modified statement was revised in good faith and not simply to provide
      Sprint PCS additional time to resubmit a previous invoice.

            If a party disputes or corrects an amount on a third party invoice
      or the amount Sprint PCS attributed to Manager, the disputing party must
      give the other party written notice of the specific item disputed or
      corrected, the disputed or corrected amount with respect to that item and
      the reason for the dispute or correction within three calendar months
      after the end of the calendar month during which the disputed or erroneous
      statement was delivered. Sprint PCS and Manager will cooperate with each
      other to obtain the information needed to determine if the amounts billed
      by the third party and allocated to Manager were correct.

            Any dispute regarding the amount of the third party invoice Sprint
      PCS attributed to Manager will be submitted for resolution under the
      dispute resolution process in section 14. Manager must continue to pay to
      Sprint PCS all amounts, except disputed amounts, owed under this agreement
      and the Services Agreement during the information gathering and dispute
      resolution process. If the aggregate disputed amount, combined with any
      aggregate disputed amount under section 10.13, exceeds $1,000,000, and
      upon the written request of Sprint PCS, Manager will deposit the portion
      of the disputed amount in excess of $1,000,000 into an escrow account that
      will be governed by an escrow agreement containing terms similar to the
      general terms described in section 10.13 and in a form to be mutually
      agreed upon by the parties. Manager will deposit the amount into the
      escrow account within 10 Business Days after its receipt of the written
      request from Sprint PCS in accordance with the foregoing. If Manager
      complies with the requirements of this paragraph, then none of Sprint PCS
      or its Related Parties may declare Manager in breach of this agreement or
      the Services Agreement because of nonpayment of the disputed amount,
      pending completion of the dispute resolution process.

            The dispute of an item in a statement does not stay or diminish a
      party's other rights and remedies under this agreement, except that the
      parties must complete the dispute resolution process in section 14 before
      taking any legal or equitable action against each other.

            10.15 LATE PAYMENTS. Any amount due under this agreement or the
      Services Agreement without a specified due date will be due 20 days after
      Manager receives an invoice. Any amount due under this agreement

                                       40

      and the Services Agreement (including without limitation any amounts
      disputed under those agreements that are ultimately determined to be due)
      that is not paid by one party to the other party in accordance with the
      terms of the applicable agreement will bear interest at the Default Rate
      beginning (and including) the 6th day after the invoice or settlement due
      date until (and including) the date paid.

            10.16 SETOFF RIGHT IF FAILURE TO PAY AMOUNTS DUE. If Manager fails
      to pay any undisputed amount due Sprint PCS or a Related Party of Sprint
      PCS under this agreement, any undisputed amount due Sprint PCS or a
      Related Party of Sprint PCS under the Services Agreement or any other
      agreement with Sprint PCS or a Related Party of Sprint PCS, or any
      disputed amount due to Sprint PCS or a Related Party for fees for CCPU
      Services or CPGA Services payable under the Services Agreement, then 5
      days after the payment due date Sprint PCS may setoff against its payments
      to Manager under this section 10 any such undisputed amount that Manager
      owes to Sprint PCS or a Related Party of Sprint PCS. This right of setoff
      is in addition to any other right that Sprint PCS or a Related Party of
      Sprint PCS might have under this agreement, the Services Agreement or any
      other agreements with Sprint PCS or a Related Party of Sprint PCS.

      16. TERMINATION RIGHTS [ADDM X,SS.16]. Section 11.3.7 is deleted, and all
references in the agreement to section 11.3.7 are also deleted.

      17. NON-TERMINATION OF AGREEMENT [ADDM I,SS.8]. Sections 11.5.3 and 11.6.4
are replaced with the following paragraphs:

            11.5.3 MANAGER'S ACTION FOR DAMAGES OR OTHER RELIEF. Manager, in
      accordance with the dispute resolution process in section 14, may seek
      damages or other appropriate relief, but such action does not terminate
      this agreement.

            11.6.4 SPRINT PCS' ACTION FOR DAMAGES OR OTHER RELIEF. Sprint PCS,
      in accordance with the dispute resolution process in section 14, may seek
      damages or other appropriate relief, but such action does not terminate
      this agreement.

      18. BUSINESS VALUATION [ADDM V,SS.4]. A new subsection 11.7.4(f) is added
to the Management Agreement:

            (f) In the event the Entire Business Value of the Manager is being
      determined, the entire value of any Operating Asset may be allocated among
      the Manager and one or more of the Other Affiliates, where appropriate,
      but the sum of the values attributed to such Operating Asset in
      determining the Entire Business Value of the Manager and the Other

                                       41

      Affiliates shall not exceed the value of such Operating Asset if it were
      used to calculate only the Manager's Entire Business Value (i.e. "double
      counting" is prohibited).

      19. AUDIT [ADDM X,SS.19]. Section 12.1.2 is amended and restated in its
entirety to read as follows:

            12.1.2 AUDITS. On reasonable advance notice by one party, the other
      party must provide its independent or internal auditors access to its
      appropriate financial and operating records, including, without
      limitation, vendor and distribution agreements, for purposes of auditing
      the amount of fees (including the appropriateness of items excluded from
      the Fee Based on Billed Revenue), costs, expenses (including operating
      metrics referred to in this agreement and the Services Agreement relating
      to or used in the determination of Inter Service Area Fees, Reseller
      Customer Fees, CCPU Services or CPGA Services) or other charges payable in
      connection with the Service Area for the period audited. The party that
      requested the audit may decide if the audit is conducted by the other
      party's independent or internal auditors. Manager and Sprint PCS may each
      request no more than one audit per year.

                  (a) If the audit shows that Sprint PCS was underpaid then,
            unless the amount is contested, Manager will pay to Sprint PCS the
            amount of the underpayment within 10 Business Days after Sprint PCS
            gives Manager written notice of the underpayment determination.

                  (b) If the audit determines that Sprint PCS was overpaid then,
            unless the amount is contested, Sprint PCS will pay to Manager the
            amount of the overpayment within 10 Business Days after Manager
            gives Sprint PCS written notice of the overpayment determination.

            The auditing party will pay all costs and expenses related to the
      audit unless the amount owed to the audited party is reduced by more than
      10% or the amount owed by the audited party is increased by more than 10%,
      in which case the audited party will pay the costs and expenses related to
      the audit.

            Sprint PCS will provide a report issued in conformity with Statement
      of Auditing Standard No. 70 "Reports on the Processing of Transactions by
      Service Organizations" ("TYPE II REPORT" or "MANAGER MANAGEMENT REPORT")
      to Manager annually. If Manager, on the advice of its independent auditors
      or its legal counsel, determines that a statute, regulation, rule,
      judicial decision or interpretation, or audit or accounting rule, policy
      or literature published by the accounting or auditing profession or other
      authoritative rule making body (such as the Securities and Exchange
      Commission, the Public Company Accounting

                                       42

      Oversight Board or the Financial Accounting Standards Board) requires
      additional assurances beyond SAS 70, then Sprint PCS will cooperate with
      Manager to provide the additional assurances. Sprint PCS' independent
      auditors will prepare any Type II Report or Manager Management Report
      provided under this section 12.1.2 and will provide an opinion on the
      controls placed in operation and tests of operating effectiveness of those
      controls in effect at Sprint PCS over Manager Management Processes.
      "Manager Management Processes" include those services generally provided
      within this agreement, primarily billing and collection of revenues.

      20. SHARING CONFIDENTIAL INFORMATION WITH LENDERS [ADDM II,SS.7]. Section
12.2(b)(vii) of the Management Agreement is replaced with the following
paragraph:

                  (vii) is disclosed by the receiving party to a financial
            institution or accredited investor (as that term is defined in Rule
            501(a) under the Securities Act of 1933) that is considering
            providing or has provided financing to the receiving party and which
            financial institution or accredited investor has agreed to keep the
            Confidential Information confidential in accordance with an
            agreement at least as restrictive as this section 12.2.

      21. REGULATORY NOTICES (COSTS) [ADDM I, SS.2]. The last sentence of
section 16.4 is replaced with the following language: "If Sprint PCS chooses to
respond to such communications and complaints, Manager will not respond to them
without the consent of Sprint PCS. Sprint PCS will bear the cost of responding
to any such communications and complaints unless (1) such response is primarily
the result of Manager's acts or omissions that constitute negligence, willful
misconduct, or breach of any provision of this agreement (in which case Manager
will pay the costs of Sprint PCS' response), or (2) Manager's response is not
requested by Sprint PCS."

      22. NOTICES [ADDM IV, SS.2 AND ADDM X, SS.22].

      (a) Section 17.1 is amended and restated in its entirety to read as
      follows:

            17.1 NOTICES. (a) Any notice, payment, invoice, demand or
      communication required or permitted to be given by any provision of this
      agreement must be in writing and mailed (certified or registered mail,
      postage prepaid, return receipt requested), sent by hand or overnight
      courier, charges prepaid or sent by facsimile or email (in either instance
      with acknowledgement or read receipt received), and addressed as described
      below, or to any other address or number as the person or entity may from
      time to time specify by written notice to the other parties. Sprint PCS
      may give notice of changes to a Program Requirement by sending an email
      that directs Manager to the changed Program

                                       43

      Requirement on the affiliate intranet website.

            The subject line of any email notice that purports to amend any
      Program Requirement must read "Program Requirement Change" and the first
      paragraph must indicate (i) which Program Requirement is being modified,
      (ii) what is being modified in the Program Requirement, and (iii) when the
      Program Requirement will take effect. The email must also include either a
      detailed summary of the Program Requirement Change or a redline comparison
      between the old Program Requirement and the new Program Requirement.

            Any notice, demand or communication intended to be notice of a
      breach of an agreement or notice of an Event of Termination must:

                  (A) clearly indicate that intent,

                  (B) state the section(s) of the agreements allegedly breached,
            and

                  (C) be mailed or sent by overnight courier in the manner
            described in the first paragraph in this section 17.1.

            Manager will promptly give Sprint PCS a copy of any notice Manager
      receives from the Administrative Agent or any Lender, and a copy of any
      notice Manager gives to the Administrative Agent or any Lender. Sprint PCS
      will promptly give Manager a copy of any notice that Sprint PCS receives
      from the Administrative Agent or any Lender and a copy of any notice that
      Sprint PCS gives to the Administrative Agent or any Lender.

            All notices and other communications given to a party in accordance
      with the provisions of this agreement will be deemed to have been given
      when received.

      (b) The parties' notice addresses are as follows:

      For all entities comprising Sprint PCS:

                    Sprint PCS
                    KSOPHJ0212-2A101
                    6130 Sprint Parkway
                    Overland Park, KS  66251
                    Telephone: 913-762-7929
                    Telecopier: 913-523-0539
                    Email: dbotto01@sprintspectrum.com
                    Attention: Vice President - Finance

            with a copy to:

                                       44

                    Sprint Law Department
                    KSOPHT0101-Z2020
                    6391 Sprint Parkway
                    Overland Park, KS 66251
                    Telephone: 913-315-9315
                    Telecopier: 913-523-9823
                    Email: john.w.chapman@mail.sprint.com
                    Attention: John Chapman

      For Manager:

                    Alamosa Wisconsin Limited Partnership
                    5225 S. Loop 289
                    Suite 120
                    Lubbock, TX 79424
                    Telephone: 806-722-1100
                    Telecopier: 806-722-1127
                    Email: dsharbutt@alamosapcs.com
                    Attention: David Sharbutt, President

            with a copy to:

                    Crenshaw, Dupree & Milam, L.L.P.
                    Wells Fargo Center
                    1500 Broadway, 8th Floor
                    Lubbock, Texas 79401
                    Telephone: 806-762-5281
                    Telecopier: 806-762-3510
                    Email: JMcCutchin@cdmlaw.com
                    Attention: Jack McCutchin, Jr.

            and with copies to the following individuals' email addresses if a
      notice of a Program Requirement Change is sent by email:

                    Kendall W. Cowan, Chief Financial Officer
                    Email: kcowan@alamosapcs.com

                    Stephen A. Richardson, Chief Operating Officer
                    Email: srichardson@alamosapcs.com

                    Loyd I. Rinehart, Senior Vice President of Corporate Finance
                    Email: lrinehart@alamosapcs.com

      23. FORCE MAJEURE [ADDM X,SS.23]. The second paragraph of section 17.9.3
is amended and restated in its entirety to read as follows:

                                       45

            Neither Manager nor Sprint PCS, as the case may be, is in breach of
      any covenant in this agreement, and no Event of Termination will occur as
      a result of the failure of such party to comply with any covenant, if the
      party's non-compliance with the covenant results primarily from:

                        (i) any FCC order or any other injunction that any
                  governmental authority issues that impedes the party's ability
                  to comply with the covenant,

                        (ii) the failure of any governmental authority to grant
                  any consent, approval, waiver or authorization or any delay on
                  the part of any governmental authority in granting any
                  consent, approval, waiver or authorization,

                        (iii) the failure of any vendor to deliver in a timely
                  manner any equipment or service, or

                        (iv) any act of God, act of war or insurrection, riot,
                  fire, accident, explosion, labor unrest, strike, civil unrest,
                  work stoppage, condemnation or any similar cause or event not
                  reasonably within the control of the party.

      24. GOVERNING LAW, JURISDICTION AND CONSENT TO SERVICE OF PROCESS [ADDM
VII,SS.6]. Section 17.12 of the Management Agreement is replaced with the
following language:

            17.12 GOVERNING LAW, JURISDICTION AND CONSENT TO SERVICE OF PROCESS.

            17.12.1 GOVERNING LAW. The internal laws of the State of Kansas
      (without regard to principles of conflicts of law) govern the validity of
      this agreement, the construction of its terms, and the interpretation of
      the rights and duties of the parties.

            17.12.2 JURISDICTION; CONSENT TO SERVICE OF PROCESS.

                  (a) Each party hereby irrevocably and unconditionally submits,
            for itself and its property, to the nonexclusive jurisdiction of any
            Kansas State court sitting in the County of Johnson or any Federal
            court of the United States of America sitting in the District of
            Kansas, and any appellate court from any such court, in any suit
            action or proceeding arising out of or relating to this agreement,
            or for recognition or enforcement of any judgment, and each party
            hereby irrevocably and unconditionally agrees that all claims in
            respect of any such suit, action or proceeding may be heard and
            determined in such Kansas State Court or, to the extent permitted by
            law, in such Federal court.

                                       46

                  (b) Each party hereby irrevocably and unconditionally waives,
            to the fullest extent it may legally do so, any objection which it
            may now or hereafter have to the laying of venue of any suit, action
            or proceeding arising out of or relating to this agreement in Kansas
            State court sitting in the County of Johnson or any Federal court
            sitting in the District of Kansas. Each party hereby irrevocably
            waives, to the fullest extent permitted by law, the defense of an
            inconvenient forum to the maintenance of such suit, action or
            proceeding in any such court and further waives the right to object,
            with respect to such suit, action or proceeding, that such court
            does not have jurisdiction over such party.

                  (c) Each party irrevocably consents to service of process in
            the manner provided for the giving of notices pursuant to this
            agreement, provided that such service shall be deemed to have been
            given only when actually received by such party. Nothing in this
            agreement shall affect the right of a party to serve process in
            another manner permitted by law.

      25. TRANSFER OF SPRINT PCS NETWORK [ADDM V,SS.8]. The first sentence of
section 17.15.5 is replaced with the following sentence:

            In conjunction with the sale of the Sprint PCS Network, Sprint PCS
      may sell, transfer or assign the Sprint PCS Network and any of the
      Licenses, including its rights and obligations under this agreement, the
      Services Agreement and any related agreements, to a third party without
      Manager's consent so long as the third party assumes the rights and
      obligations under this agreement and the Services Agreement.

      26. ANNOUNCED TRANSACTIONS [ADDM I,SS.9]. Section 17.24 is deleted.

      27. ADDITIONAL TERMS AND PROVISIONS [ADDM I,SS.10 AND ADDM X,SS.27].
Section 17.25 is replaced with the following paragraph:

            17.25 ADDITIONAL TERMS AND PROVISIONS. Certain additional and
      supplemental terms and provisions of this agreement, if any, are set forth
      in the Addendum to Sprint PCS Management Agreement attached hereto and
      incorporated herein by this reference. Manager represents and warrants
      that all existing contracts and arrangements (written or verbal) that
      relate to or affect the rights of Sprint PCS or any of its Related Parties
      under this agreement (e.g., agreements relating to long distance telephone
      services (section 3.4)) are described on Exhibit 17.25, and photocopies of
      any such written agreements have been delivered to Sprint PCS.

                                       47

      28. FEDERAL CONTRACTOR COMPLIANCE [ADDM I, SS.11]. A new section 17.28,
the text of which is attached as Exhibit A to Addendum I, is added and
incorporated by this reference. When and to the extent required by applicable
law, Manager will comply with the requirement of this section 17.28.

      29. YEAR 2000 COMPLIANCE [ADDM I,SS.12]. A new section 17.29 is added to
the Management Agreement:

                  17.29 YEAR 2000 COMPLIANCE. Sprint PCS and Manager each
            separately represents and warrants that any system or equipment
            acquired, operated or designated by it for use in the Service Area
            Network or for use to support the Service Area Network, including
            (without limitation) billing, ordering and customer service systems,
            will be capable of correctly processing and receiving date data, as
            well as properly exchanging date data with all products (for
            example, hardware, software and firmware) with which the Service
            Area Network is designed to be used, and will not malfunction or
            fail to function due to an inability to process correctly date data
            in conformance with Sprint PCS requirements for "Year 2000
            Compliance." If the Service Area Network or any system used to
            support the Service Area Network fails to operate as warranted due
            to defects or failures in any system or equipment selected by
            Manager (including systems or equipment of third party vendors and
            subcontractors selected by Manager rather than by Sprint PCS)
            Manager will, at its own expense, make the repairs, replacements or
            upgrades necessary to correct the failure and provide a Year 2000
            Compliant Service Area Network. If the Service Area Network or any
            system used to support the Service Area Network fails to operate as
            warranted due to defects or failures in any systems or equipment
            selected by Sprint PCS (including systems or equipment of third
            party vendors and subcontractors that Sprint PCS selects and
            requires Manager to use), Sprint PCS will, at its own expense, make
            the repairs, replacements or upgrades necessary to correct the
            failure and provide a Year 2000 Compliant Service Area Network.

                  "YEAR 2000 COMPLIANCE" means the functions, calculations, and
            other computing processes of the Service Area Network (collectively
            "Processes") that perform and otherwise process, date-arithmetic,
            display, print or pass date/time data in a consistent manner,
            regardless of the date in time on which the Processes are actually
            performed or the dates used in such data or the nature of the
            date/time data input, whether before, during or after January 1,
            2000 and whether or not the date/time data is affected by leap
            years. To the extent any part of the Service Area Network is
            intended to be used in combination with other software, hardware or
            firmware, it will properly exchange date/time data

                                       48

            with such software, hardware or firmware. The Service Area Network
            will accept and respond to two-digit year-date input, correcting or
            supplementing as necessary, and store, print, display or pass
            date/time data in a manner that is unambiguous as to century. No
            date/time data will cause any part of the Service Area Network to
            perform an abnormally ending routine or function within the
            Processes or generate incorrect final values or invalid results.

      30. CROSS-DEFAULT [ADDM V,SS.2 AND ADDM VI,SS.2]. A new section 17.30 is
added to the Management Agreement:

                  17.30 CROSS-DEFAULT. A breach or Event of Termination under
            any of the Sprint Agreements (as that term is defined in the Consent
            and Agreement) by Texas Telecommunications, L.P., a Texas limited
            partnership, Alamosa Missouri, LLC, a Missouri limited liability
            company, Southwest PCS, L.P., an Oklahoma limited partnership, or
            Washington Oregon Wireless LLC, a Delaware limited liability
            company, or their respective successors or assigns (collectively the
            "OTHER AFFILIATES") also constitutes a breach or Event of
            Termination, as the case may be, by the Manager of the same
            provision of the applicable Sprint Agreement to which the Manager is
            a party, and the Sprint Parties (as that term is defined in the
            Consent and Agreement) shall have the same rights under the Sprint
            Agreements and the Consent and Agreement to which the Manager is a
            party as if the same breach or Event of Termination had occurred
            under such Sprint Agreement. The Manager has no right to cure any
            breach or Event of Termination with respect to an Other Affiliate.
            Such breach or Event of Termination by an Other Affiliate shall not
            qualify as a force majeure under the Sprint Agreements or the
            Consent and Agreement.

      31. PERFORMANCE/PAYMENT OF OTHER AFFILIATES' OBLIGATIONS [ADDM V,SS.3]. A
new section 17.31 is added to the Management Agreement:

                  17.31 PERFORMANCE/PAYMENT OF OTHER AFFILIATES' OBLIGATIONS. To
            induce the Sprint Parties to enter into the Consent and Agreement
            with Citicorp, Manager absolutely and unconditionally guarantees the
            prompt and punctual performance and payment of the Obligations (as
            that term is defined in the Consent and Agreement) of the Other
            Affiliates and their respective successors or assigns when due and
            payable pursuant to the terms of the Other Affiliates' Sprint
            Agreements as they may be amended and modified. Manager agrees that
            the Sprint Parties shall not be required first to collect from any
            other guarantor of

                                       49

            any such obligation or to proceed against or exhaust any collateral
            or security for any obligation before requiring Manager to perform
            or pay the obligation guaranteed under this section. Any Sprint
            Party may bring suit against Manager without joining the Other
            Affiliates or any other guarantor. Manager agrees that notice given
            by a Sprint Party to any Other Affiliate under such Other
            Affiliate's Sprint Agreements or the Consent and Agreement
            constitutes notice to the Manager.

      32. FINANCIAL INFORMATION [ADDM X,SS.32]. A new section 17.32 is added to
the Management Agreement:

            17.32 COPIES OF FINANCIAL INFORMATION. Manager agrees to give Sprint
      PCS a copy of all financial information it gives the Administrative Agent
      or any Lender (as such parties are defined in the Consent and Agreement).

                               SERVICES AGREEMENT
                               ------------------

      33. NON-EXCLUSIVE SERVICES [ADDM X,SS.33]. Section 1.3 of the Services
Agreement is amended and restated in its entirety to read as follows:

            1.3 NON-EXCLUSIVE SERVICES. Nothing contained in this agreement
      confers upon Manager an exclusive right to any of the Services. Sprint
      Spectrum may contract with others to provide expertise and services
      identical or similar to those to be made available or provided to Manager
      under this agreement.

      34. CHANGES TO ARTICLE 2 [ADDM X,SS.34; REVISED BY THIS ADDENDUM]. Article
2 of the Services Agreement is amended and restated in its entirety to read as
follows:

                                   2. SERVICES

            2.1 SERVICES.

            2.1.1 SERVICES. Subject to the terms of this agreement, through
      December 31, 2006, Manager will obtain the services set forth on Schedule
      2.1.1 attached to this agreement ("SERVICES") from Sprint Spectrum in
      accordance with this section 2.1, and Sprint Spectrum will provide all or
      none of the Services. For purposes of clarification, as of the Effective
      Date of Addendum IX through December 31, 2006, Sprint Spectrum is
      providing all of the Services to Manager and Sprint Spectrum will not
      provide individual Services.

            The fees charged for the Services and the process for setting the
      fees charged for the Services are set forth in section 3.2. Sprint

                                       50

      Spectrum may designate additional Services upon at least 60 days' prior
      written notice to Manager by providing an amended Schedule 2.1.1 to
      Manager in accordance with the provisions of section 9.1.

            Without Manager's prior written consent, neither Sprint Spectrum nor
      any of its Related Parties will require Manager to pay for:

            (A) any of those additional CCPU Services or CPGA Services to the
      extent that they are the same as or functionally equivalent to any service
      or benefit that Manager currently receives from Sprint Spectrum or its
      Related Parties or Sprint PCS or its Related Parties but for which Manager
      does not pay a separate fee immediately after the Effective Date, or

            (B) any other additional CCPU Services or CPGA Services through
      December 31, 2006. After that date the fee for those other additional
      Services will be included in the fees for CCPU Services and CPGA Services.

            2.1.2 DISCONTINUANCE OF SERVICES. If Sprint Spectrum determines to
      no longer offer a Service, then Sprint Spectrum must

                        (i) notify Manager in writing a reasonable time before
                  discontinuing the Service, except Sprint will notify Manager
                  at least 9 months before Sprint plans to discontinue a
                  significant Service (e.g., billing, collection and customer
                  care).

                        (ii) discontinue the Service to all Other Managers.

      If Manager determines within 90 days after receipt of notice of
      discontinuance that it wants to continue to receive the Service, Sprint
      Spectrum will use commercially reasonable efforts to:

                        (a) help Manager provide the Service itself or find
                  another vendor to provide the Service, and

                        (b) facilitate Manager's transition to the new Service
                  provider.

            The fees charged by Sprint Spectrum for the CCPU Services and CPGA
      Services will be reduced by any fees payable by Manager to a vendor or new
      Service provider in respect of discontinued CCPU Services and CPGA
      Services, if (x) Sprint Spectrum procures such CCPU Services or CPGA
      Services from a vendor or a new Service provider and bills those items as
      Settled-Separately Manager Expenses (as defined in subsection 3.2.5 of
      this agreement), or (y) Manager procures

                                       51

      such CCPU Services or CPGA Services from a vendor or a new provider of
      Services, or (z) Manager self-provisions the Service. No adjustment to the
      fees will be made if Sprint Spectrum discontinues a CCPU Service or CPGA
      Service and Sprint Spectrum does not provide the CCPU Service or CPGA
      Service to end users.

            2.1.3 PERFORMANCE OF SERVICES. Sprint Spectrum may select the
      method, location and means of providing the Services. If Sprint Spectrum
      wishes to use Manager's facilities to provide the Services, Sprint
      Spectrum must obtain Manager's prior written consent.

            2.2 THIRD PARTY VENDORS. Some of the Services might be provided by
      third party vendors under arrangements between Sprint Spectrum and the
      third party vendors. In some instances, Manager may receive Services from
      a third party vendor under the same terms and conditions that Sprint
      Spectrum receives those services. In other instances, Manager may receive
      Services under the terms and conditions set forth in an agreement between
      Manager and the third party vendor.

      35. CHANGES TO ARTICLE 3 [ADDM X,SS.35; REVISED BY THIS ADDENDUM]. (a)
Section 13 of Addendum I is deleted. Article 3 of the Services Agreement is
amended and restated in its entirety to read as follows:

                              3. FEES FOR SERVICES

            3.1 SERVICES. Manager will pay Sprint Spectrum a fee for the
      Services provided by or on behalf of Sprint Spectrum now or in the future,
      subject to Section 2.1.1. Manager may not obtain these Services from other
      sources, except as provided in this agreement.

            If an accounting classification change has the effect of moving a
      Service from a CCPU Service or CPGA Service to a Settled-Separately
      Manager Expense, the fees for the CCPU Services or CPGA Services, as
      applicable, charged by Sprint Spectrum will be reduced by the fees payable
      by Manager for the new Settled-Separately Manager Expense.

            3.2 FEES FOR SERVICES.

            3.2.1 INITIAL PRICING PERIOD. The fees Manager will pay Sprint
      Spectrum for the CCPU Services and CPGA Services provided to Manager by or
      on behalf of Sprint Spectrum each month from the Effective Date of
      Addendum XI until December 31, 2006 ("INITIAL PRICING Period"), will be:

            (a) for the CCPU Services: $7.00 per subscriber multiplied by the
      Number of Customers in Manager's Service Area, and

                                       52

            (b) for the CPGA Services: $23.00 per Gross Customer Addition in
      Manager's Service Area multiplied by the Gross Customer Additions in
      Manager's Service Area.

            The fees will be paid as set forth in section 10 of the Management
      Agreement.

            3.2.2 PRICING PROCESS. The parties will reset the CCPU and CPGA
      amounts to be applied in each pricing period after the Initial Pricing
      Period ends. Each subsequent pricing period will last three years (if
      Manager continues to use Sprint Spectrum or a Related Party to provide
      these Services) with, for example, the second pricing period beginning on
      January 1, 2007 and ending on December 31, 2009.

            The process for resetting the amounts is as follows:

            (a) Sprint Spectrum will give Manager proposed CCPU and CPGA amounts
      by October 31 of the calendar year before the calendar year in which the
      then current pricing period ends (e.g. if the pricing period ends on
      December 31, 2006 then the amounts have to be presented by October 31,
      2005). The proposed amounts will be based on the amount necessary to
      recover Sprint PCS' reasonable costs for providing the CCPU Services and
      CPGA Services to Manager and the Other Managers. Manager's representative
      and the Sprint PCS representative will begin discussions regarding the
      proposed CCPU and CPGA amounts within 20 days after Manager receives the
      proposed CCPU and CPGA amounts from Sprint Spectrum.

            (b) The fee Manager will pay Sprint Spectrum for the CCPU Services
      provided to Manager by or on behalf of Sprint Spectrum each month
      beginning on January 1, 2007 until December 31, 2008 under the pricing
      process described in this section 3.2.2 will not exceed $8.50 per
      subscriber multiplied by the Number of Customers in Manager's Service
      Area.

            (c) If the parties do not agree on new CCPU and CPGA amounts within
      30 days after the discussions begin, then Manager may escalate the
      discussion to the Sprint PCS Chief Financial Officer or Sprint Spectrum
      may escalate the discussion to Manager's Chief Executive Officer or Chief
      Financial Officer.

            (d) If the parties cannot agree on the new CCPU and CPGA amounts
      through the escalation process within 20 days after the escalation process
      begins, then Manager may either

                  (i) submit the determination of the CCPU and CPGA amounts to
            binding arbitration under section 14.2 of

                                       53

            this agreement, excluding the escalation process set forth in
            section 14.1 and continue obtaining all of the CCPU Services and
            CPGA Services from Sprint Spectrum at the CCPU and CPGA amounts the
            arbitrator determines, or

                  (ii) procure from a vendor other than Sprint Spectrum or
            self-provision all of the Services.

            By December 1, 2006, the parties will agree on a service level
      agreement for customer care services and collection services
      ("CUSTOMER-RELATED SERVICES") that will apply to Customer-Related Services
      delivered by Sprint Spectrum starting on January 1, 2007. If the parties
      cannot agree on a service level agreement by December 1, 2006, either
      party may submit a proposed service level agreement to binding arbitration
      under section 14.2 of the Management Agreement, excluding the escalation
      process set forth in section 14.1. If the arbitration concludes after
      January 1, 2007 the service level agreement, as agreed upon through the
      arbitration process, will be effective as of January 1, 2007. The
      agreement will set forth 5 metrics for Customer-Related Services and will
      provide that Sprint Spectrum will use commercially reasonable efforts to
      meet the industry averages for those metrics as in effect on December 1,
      2006. The 5 metrics are:

            (a)   Service Grade Rate defined as percentage of calls answered in
                  60 seconds or less after the customer enters the call queue.

            (b)   Average Hold Time defined as average time a customer waits to
                  talk to a customer service representative once the customer
                  enters the call queue.

            (c)   Abandoned Call Rate defined as the percentage of calls that
                  disconnect prior to talking to a customer service
                  representative after the customer enters the call queue.

            (d)   Net Write-Offs Rate defined as monthly write-offs of accounts
                  receivable, net of customer deposits, divided by monthly
                  subscriber revenue.

            (e)   Past-Due Accounts Receivable Aging Rates defined as percentage
                  of accounts receivable greater than 60 days from due date.

            The service level agreement will provide that Sprint Spectrum will
      give Manager a quarterly report on the above metrics. Beginning in 2008,
      Manager will have the right to opt out of Sprint Spectrum providing the
      Customer Related Services if the average of the metrics reflected in the
      four quarterly reports for the prior calendar year indicate that Sprint
      Spectrum is not in compliance with any 2 of the 5 metrics. To exercise the
      opt-out right, Manager

                                       54

      must give its opt-out notice to Sprint Spectrum during the first quarter
      of any calendar year that Manager has an opt-out right. Upon receipt of an
      opt-out notice, Manager and Sprint Spectrum will use commercially
      reasonable efforts to transition the Customer-Related Services to Manager
      or a third party vendor within 9 months after the opt-out notice date.
      Upon the parties' completion of the transition, the parties will agree to
      an adjustment to the CCPU Service Fee being charged by Sprint Spectrum to
      Manager. If the parties cannot agree to an adjustment, Manager has the
      right to submit the determination to binding arbitration under section
      14.2 of the Management Agreement, excluding the escalation process set
      forth in section 14.1, and continue obtaining all the CPGA Services and
      remaining CCPU services from Sprint Spectrum. Manager will reimburse
      Sprint Spectrum for transition and continuing operation costs in
      accordance with Section 3.2.4.

            Manager's opt-out right described above is its sole remedy if Sprint
      Spectrum is not in compliance with the metrics; Sprint Spectrum's
      non-compliance with the metrics does not constitute a breach of this
      agreement or any other agreement between the parties.

            Manager has the right to propose to Sprint Spectrum that Manager
      self-provision or procure from a vendor some, but not all, of the
      Services. Sprint Spectrum will discuss the proposal with Manager, but
      Manager can only self-provision or procure from a vendor some of the
      Services if Sprint Spectrum agrees.

            Manager will begin paying Sprint Spectrum under the CCPU and CPGA
      amounts that Sprint Spectrum presents for discussion at the beginning of
      the new pricing period until the date on which the parties agree or until
      the arbitrator determines the new CCPU and CPGA amounts, whichever occurs
      first. Within 30 days after the amounts are determined (either by
      agreement or by arbitration), Sprint PCS will recalculate the fees from
      the beginning of the new pricing period and give notice to Manager of what
      the fees are and the amount of any adjusting payments required. If Sprint
      PCS owes Manager a refund of fees already paid, Sprint PCS may pay the
      amount to Manager or Sprint PCS, in its sole discretion, may credit the
      amount of the refund against any amounts Manager then owes to Sprint PCS.
      If Sprint PCS chooses to pay the refund, it will make the payment at the
      time it sends the notice to Manager; If Sprint PCS chooses to credit the
      refund, it will in the notice indicate the amounts owing to which the
      credit will be applied. If Manager owes Sprint PCS additional fees Manager
      will pay those fees to Sprint PCS within 10 days after receipt of the
      notice.

            3.2.3 SPRINT SPECTRUM FIRST RIGHT OF REFUSAL. Manager must give
      Sprint Spectrum written notice of Manager's decision to procure the
      Services from a third party vendor the Services at least 120 days before
      the end of the Initial Pricing Period or any subsequent three-year pricing
      period and provide the third party vendor terms to Sprint

                                       55

      Spectrum. Sprint Spectrum will have 30 days from the date it receives the
      third party vendor's terms to decide if it will provide those Services to
      Manager under those terms.

            Manager must agree to receive the Services from Sprint Spectrum if
      Sprint Spectrum gives notice to Manager that it will provide the Services
      to Manager on the third party vendor terms. If Sprint Spectrum does not
      exercise its first right of refusal, Manager must sign the agreement with
      the third party vendor on the same terms and conditions as presented to
      Sprint Spectrum within 10 Business Days after Sprint Spectrum notifies
      Manager of its decision not to exercise the first right of refusal or the
      expiration of the 30-day period, whichever occurs first. The procedure set
      forth in this section 3.2.3 will begin again if Manager does not sign the
      agreement with the third party vendor as required in the preceding
      sentence.

            3.2.4 TRANSITION AND CONTINUING OPERATING COSTS. Sprint Spectrum
      will cooperate with Manager and work diligently and in good faith to
      implement the transition to another service provider (including Manager,
      if applicable), in a reasonably efficient and expeditious manner.

            Manager will pay for all reasonable out-of-pocket costs that Sprint
      Spectrum and its Related Parties actually incur to (i) transfer any
      Service(s) provided to Manager to a third party vendor or to enable
      Manager to self-provide any Service(s), and (ii) operate and maintain
      systems, processes, licenses and equipment to support those Services.
      Sprint Spectrum will bill Manager monthly for these costs.

            3.2.5 SETTLED-SEPARATELY MANAGER EXPENSES. Manager will pay to or
      reimburse Sprint Spectrum for any amounts that Sprint Spectrum or its
      Related Parties pays for Settled-Separately Manager Expenses.
      "SETTLED-SEPARATELY MANAGER EXPENSES" means those items the parties choose
      to settle separately between themselves (e.g. accessory margins,
      reciprocal retail store cost recovery) that are listed in sections C and D
      of Schedule 2.1.1.

            Sprint Spectrum will give Manager at least 60 days' prior written
      notice by providing an amended Schedule 2.1.1 to Manager in accordance
      with the provisions of section 9.1 of any additional Services added to
      sections C and D of Schedule 2.1.1, but no additional service may be added
      to the extent it is the same as, or functionally equivalent to, either:

                  (a) any service that Sprint Spectrum or any of its Related
            Parties currently provides to Manager as a CCPU Service or a CPGA
            Service (unless the fees payable by Manager to Sprint Spectrum
            hereunder are correspondingly reduced) or

                                       56

                  (b) any service or benefit that Manager currently receives
            from Sprint Spectrum or its Related Parties but for which Manager
            does not pay a separate fee before the Effective Date.

            For each Settled-Separately Manager Expense, Sprint Spectrum will
      provide sufficient detail to enable Manager to determine how the expense
      was calculated, including the unit of measurement (e.g., per subscriber
      per month or per call) and the record of the occurrences generating the
      expense (e.g., the number of calls attributable to the expense). If an
      expense is not reasonably subject to occurrence level detail, Sprint
      Spectrum will provide reasonable detail on the process used to calculate
      the fee and the process must be reasonable. A detail or process is
      reasonable if it is substantially in the form as is customarily used in
      the wireless industry. The Settled-Separately Manager Expenses will be
      paid as set forth in section 10 of the Management Agreement. Sprint
      Spectrum and its Related Parties may arrange for Manager to pay any of the
      Settled-Separately Manager Expenses directly to the vendor after giving
      Manager reasonable notice.

            Unless Manager specifically agrees otherwise, any Settled-Separately
      Manager Expense that Sprint Spectrum or any of its Related Parties is
      entitled to charge or pass through to Manager under this agreement or the
      Management Agreement will reflect solely out-of-pocket costs and expenses
      that Sprint Spectrum or its Related Parties actually incur, will be
      usage-based or directly related to revenue-generating products and
      services, and will not include any allocation of Sprint PCS' or its
      Related Parties' internal costs or expenses (including, but not limited
      to, allocations of general and administrative expenses or allocations of
      employee compensation or related expenses). For clarity, Sprint Spectrum's
      or its Related Parties' out-of-pocket costs for handset and accessory
      inventory consist of actual inventory invoice costs less any volume
      incentive rebates and price protection credits that Sprint Spectrum or its
      Related Parties receive from a vendor.

            3.3 LATE PAYMENTS. Any payment due under this section 3 that Manager
      fails to pay to Sprint Spectrum in accordance with this agreement will
      bear interest at the Default Rate beginning (and including) the 6th day
      after the due date stated on the invoice until (and including) the date on
      which the payment is made.

            3.4 TAXES. Manager will pay or reimburse Sprint Spectrum for any
      sales, use, gross receipts or similar tax, administrative fee,
      telecommunications fee or surcharge for taxes or fees that a governmental
      authority levies on the fees and charges that Manager pays to Sprint
      Spectrum or a Related Party.

      36. AUDIT [ADDM X,SS.36]. Section 5.1.2 of the Services Agreement is
amended and restated in its entirety to read as follows:

                                       57

            5.1.2 AUDITS. On reasonable advance notice by one party, the other
      party must provide its independent or internal auditors access to its
      appropriate financial and operating records, including, without
      limitation, vendor and distribution agreements, for purposes of auditing
      the amount of fees (including the appropriateness of items included in
      Settled-Separately Manager Expenses), costs, expenses (including operating
      metrics referred to in this agreement and the Services Agreement relating
      to or used in the determination of Inter Service Area Fees, Reseller
      Customer Fees, CCPU Services or CPGA Services) or other charges payable in
      connection with the Service Area for the period audited. The party that
      requested the audit may decide if the audit is conducted by the other
      party's independent or internal auditors. Manager and Sprint Spectrum may
      each request no more than one audit per year.

                  (a) If the audit shows that Sprint Spectrum was underpaid
            then, unless the amount is contested, Manager will pay to Sprint
            Spectrum the amount of the underpayment within 10 Business Days
            after Sprint Spectrum gives Manager written notice of the
            underpayment determination.

                  (b) If the audit determines that Sprint Spectrum was overpaid
            then, unless the amount is contested, Sprint Spectrum will pay to
            Manager the amount of the overpayment within 10 Business Days after
            Manager gives Sprint Spectrum written notice of the overpayment
            determination.

            The auditing party will pay all costs and expenses related to the
      audit unless the amount owed to the audited party is reduced by more than
      10% or the amount owed by the audited party is increased by more than 10%,
      in which case the audited party will pay the costs and expenses related to
      the audit.

            If either party disputes the auditor's conclusion then the dispute
      will be submitted to binding arbitration in accordance with section 14.2
      of the Management Agreement, excluding the escalation process set forth in
      section 14.1 of the Management Agreement.

            Sprint PCS will provide a Type II Report to Manager annually. If
      Manager, on the advice of its independent auditors or its legal counsel,
      determines that a statute, regulation, rule, judicial decision or
      interpretation, or audit or accounting rule, policy or literature
      published by the accounting or auditing profession or other authoritative
      rule making body (such as the Securities and Exchange Commission, the
      Public Company Accounting Oversight Board or the Financial Accounting
      Standards Board) requires additional assurances beyond SAS 70, then Sprint
      Spectrum will cooperate with Manager to provide the additional assurances.
      Sprint Spectrum's independent auditors will prepare any Type II Report or
      Manager Management Report provided under this section 5.1.2

                                       58

      and will provide an opinion on the controls placed in operation and tests
      of operating effectiveness of those controls in effect at Sprint PCS over
      Manager Management Processes.

      37. NOTICES [ADDM X,SS.37]. Section 9.1 of the Services Agreement is
amended and restated in its entirety to read as follows:

            9.1 NOTICES. Any notice, payment, invoice, demand or communication
      required or permitted to be given by any provision of this agreement must
      be in writing and mailed (certified or registered mail, postage prepaid,
      return receipt requested), sent by hand or overnight courier, charges
      prepaid or sent by facsimile or email (in either instance with
      acknowledgement or read receipt received), and addressed as described in
      section 17.1(b) of the Management Agreement, or to any other address or
      number as the person or entity may from time to time specify by written
      notice to the other parties.

            The subject line of any email notice that purports to add any
      additional service to Schedule 2.1.1 must read "Additional Service to
      Schedule 2.1.1". The new Schedule 2.1.1 must also be attached to the
      email, and notice will also be provided to those individuals listed for
      notices for Manager regarding Program Requirement Changes set forth in
      section 17.1(b) of the Management Agreement.

            Any notice, demand or communication intended to be notice of a
      breach of an agreement or notice of an Event of Termination must clearly
      indicate that intent, state the section(s) of the agreements allegedly
      breached, and in addition to any other form of notice it must be mailed or
      sent by overnight courier in the manner described in the first paragraph
      of this section 9.1.

            Manager will promptly give Sprint Spectrum a copy of any notice
      Manager receives from the Administrative Agent or any Lender, and a copy
      of any notice Manager gives to the Administrative Agent or any Lender.
      Sprint Spectrum will promptly give Manager a copy of any notice that
      Sprint Spectrum receives from the Administrative Agent or any Lender and a
      copy of any notice that Sprint Spectrum gives to the Administrative Agent
      or any Lender.

            All notices and other communications given to a party in accordance
      with the provisions of this agreement will be deemed to have been given
      when received.

      38. ENTIRE AGREEMENT; AMENDMENTS [ADDM X,SS.38]. Section 9.6 of the
Services Agreement is amended and restated in its entirety to read as follows:

                                       59

            9.6 ENTIRE AGREEMENT; AMENDMENTS. The provisions of this agreement
      and the Management Agreement including the exhibits to those agreements
      set forth the entire agreement and understanding between the parties as to
      the subject matter of this agreement and supersede all prior agreements,
      oral or written, and other communications between the parties relating to
      the subject matter of this agreement. Except for Sprint Spectrum's right
      to add additional Services to Schedule 2.1.1 subject to the provisions of
      section 2.1.1 and section 3.2.5, this agreement may be modified or amended
      only by a written amendment signed by the persons or entities authorized
      to bind each party.

      39. FORCE MAJEURE [ADDM X,SS.39]. The second paragraph of section 9.8 of
the Services Agreement is amended and restated in its entirety to read as
follows:

            Neither Manager nor Sprint Spectrum, as the case may be, is in
      breach of any covenant in this agreement and no Event of Termination will
      occur as a result of the failure of such party to comply with any
      covenant, if the party's non-compliance with the covenant results
      primarily from:

                        (i) any FCC order or any other injunction that any
                  governmental authority issues that impedes the party's ability
                  to comply with the covenant,

                        (ii) the failure of any governmental authority to grant
                  any consent, approval, waiver or authorization or any delay on
                  the part of any governmental authority in granting any
                  consent, approval, waiver or authorization,

                        (iii) the failure of any vendor to deliver in a timely
                  manner any equipment or service, or

                        (iv) any act of God, act of war or insurrection, riot,
                  fire, accident, explosion, labor unrest, strike, civil unrest,
                  work stoppage, condemnation or any similar cause or event not
                  reasonably within the control of the party.

      40. GOVERNING LAW, JURISDICTION AND CONSENT TO SERVICE OF PROCESS [ADDM
VII,SS.6]. Section 9.11 of the Services Agreement is replaced with the following
language:

            9.11 GOVERNING LAW, JURISDICTION AND SERVICE OF PROCESS.

                  9.11.1 GOVERNING LAW. The internal laws of the State of Kansas
            (without regard to principles of conflicts of law) govern the
            validity of this agreement, the construction of its terms, and the
            interpretation of the rights and duties of the parties.

                                       60

                  9.11.2 JURISDICTION; CONSENT TO SERVICE OF PROCESS.

                  (a) Each party hereby irrevocably and unconditionally submits,
            for itself and its property, to the nonexclusive jurisdiction of any
            Kansas State court sitting in the County of Johnson or any Federal
            court of the United States of America sitting in the District of
            Kansas, and any appellate court from any such court, in any suit
            action or proceeding arising out of or relating to this agreement,
            or for recognition or enforcement of any judgment, and each party
            hereby irrevocably and unconditionally agrees that all claims in
            respect of any such suit, action or proceeding may be heard and
            determined in such Kansas State Court or, to the extent permitted by
            law, in such Federal court.

                  (b) Each party hereby irrevocably and unconditionally waives,
            to the fullest extent it may legally do so, any objection which it
            may now or hereafter have to the laying of venue of any suit, action
            or proceeding arising out of or relating to this agreement in Kansas
            State court sitting in the County of Johnson or any Federal court
            sitting in the District of Kansas. Each party hereby irrevocably
            waives, to the fullest extent permitted by law, the defense of an
            inconvenient forum to the maintenance of such suit, action or
            proceeding in any such court and further waives the right to object,
            with respect to such suit, action or proceeding, that such court
            does not have jurisdiction over such party.

                  (c) Each party irrevocably consents to service of process in
            the manner provided for the giving of notices pursuant to this
            agreement, provided that such service shall be deemed to have been
            given only when actually received by such party. Nothing in this
            agreement shall affect the right of a party to serve process in
            another manner permitted by law.

                          TRADEMARK LICENSE AGREEMENTS
                          ----------------------------

      41. NOTICES [ADDM X,SS.41]. Section 15.1 of each of the Trademark License
Agreements is amended and restated in its entirety to read as follows:

            Section 15.1. Notices. Any notice, payment, invoice, demand or
      communication required or permitted to be given by any provision of this
      agreement must be in writing and mailed (certified or registered mail,
      postage prepaid, return receipt requested), sent by hand or overnight
      courier, or sent by facsimile (with acknowledgment received), charges
      prepaid and addressed as described in section 17.1(b) of the Management
      Agreement, or to any other address or number as the person or entity may
      from time to time specify by written notice to the other parties.

                                       61

            Any notice, demand or communication intended to be notice of a
      breach of an agreement or notice of an Event of Termination must clearly
      indicate that intent, state the section(s) of the agreements allegedly
      breached, and be mailed or sent by overnight courier in the manner
      described in the preceding paragraph.

            Licensee will promptly give Licensor a copy of any notice Licensee
      receives from any Administrative Agent or any Lender, and a copy of any
      notice Licensee gives to any Administrative Agent or any Lender. Licensor
      will promptly give Licensee a copy of any notice that Licensor receives
      from the Administrative Agent or any Lender and a copy of any notice that
      Licensor gives to the Administrative Agent or any Lender.

            All notices and other communications given to a party in accordance
      with the provisions of this agreement will be deemed to have been given
      when received.

      42. GOVERNING LAW [ADDM VII,SS.6]. Section 15.8 of each of the Trademark
License Agreements is replaced by the following language:

            15.8 Governing Law. The internal laws of the State of Kansas
      (without regard to principles of conflicts of law) govern the validity of
      this agreement, the construction of its terms, and the interpretation of
      the rights and duties of the parties.

      43. JURISDICTION [ADDM VII,SS.6]. Section 15.13 of each of the Trademark
License Agreements is replaced by the following language:

            15.13 Jurisdiction; Consent to Service of Process.

            (a) Each party hereby irrevocably and unconditionally submits, for
      itself and its property, to the nonexclusive jurisdiction of any Kansas
      State court sitting in the County of Johnson or any Federal court of the
      United States of America sitting in the District of Kansas, and any
      appellate court from any such court, in any suit action or proceeding
      arising out of or relating to this agreement, or for recognition or
      enforcement of any judgment, and each party hereby irrevocably and
      unconditionally agrees that all claims in respect of any such suit, action
      or proceeding may be heard and determined in such Kansas State Court or,
      to the extent permitted by law, in such Federal court.

            (b) Each party hereby irrevocably and unconditionally waives, to the
      fullest extent it may legally do so, any objection which it may now or
      hereafter have to the laying of venue of any suit, action or proceeding
      arising out of or relating to this agreement in Kansas State court sitting
      in the County of Johnson or any Federal court sitting in the

                                       62

      District of Kansas. Each party hereby irrevocably waives, to the fullest
      extent permitted by law, the defense of an inconvenient forum to the
      maintenance of such suit, action or proceeding in any such court and
      further waives the right to object, with respect to such suit, action or
      proceeding, that such court does not have jurisdiction over such party.

            (c) Each party irrevocably consents to service of process in the
      manner provided for the giving of notices pursuant to this agreement,
      provided that such service shall be deemed to have been given only when
      actually received by such party. Nothing in this agreement shall affect
      the right of a party to serve process in another manner permitted by law.

                             SCHEDULE OF DEFINITIONS
                             -----------------------

      44. DELETED DEFINITION [ADDM X,SS.44]. The definition of "Available
Services" is deleted.

      45. ADDITIONAL, AMENDED OR SUPPLEMENTED DEFINITIONS [ADDM X,SS.45; REVISED
BY THIS ADDENDUM]. The following are new or amended definitions, unless
otherwise indicated:

            "ALAMOSA MANAGERS" means Manager and the Other Managers controlled
      by Alamosa Holdings, Inc.

            "ALLOCABLE SOFTWARE FEE" has the meaning set forth in section
      1.3.4(e) of the Management Agreement.

            "ALLOCATED WRITE-OFFS" has the meaning set forth in section 10.3.4
      of the Management Agreement.

            "AMOUNT BILLED (NET OF CUSTOMER CREDITS)" has the meaning set forth
      in section 10.3.3 of the Management Agreement.

            "AWAY NETWORK" means:

                        (i) any portion of the Sprint PCS Network other than
                  Manager's Service Area Network, in the case of Customers with
                  an NPA-NXX assigned to the Service Area (or any other such
                  designation in accordance with section 17.17 of the Management
                  Agreement), and

                        (ii) Manager's Service Area Network, in the case of
                  Customers with an NPA-NXX assigned to an area outside the
                  Service Area (or any other such designation in accordance with
                  section 17.17 of the Management Agreement).

                                       63

            "BILLED COMPONENT(S)" has the meaning set forth in section 10.3.2 of
      the Management Agreement.

            "BILLED MONTH" has the meaning set forth in section 10.2.1 of the
      Management Agreement.

            "BILLED REVENUE" has the meaning set forth in section 10.2.1 of the
      Management Agreement.

            "CCPU SERVICES" means those Services listed in section A of Schedule
      2.1.1 to the Services Agreement.

            "CHIEF FINANCIAL OFFICER OF SPRINT PCS", "SPRINT PCS CHIEF FINANCIAL
      OFFICER" and other references to the Chief Financial Officer of Sprint PCS
      mean the Senior Vice President - Finance of Sprint Corporation designated
      to serve as the chief financial officer of Sprint PCS or if none, the
      individual serving in that capacity.

            "CPGA SERVICES" means those Services listed in section B of Schedule
      2.1.1 to the Services Agreement.

            "CSA" has the meaning set forth in section 10.2.1 of the Management
      Agreement.

            "CUSTOMER" means any customer, except Reseller Customers or
      customers of third parties for which Manager provides solely switching
      services, who purchases Sprint PCS Products and Services, regardless of
      where their NPA-NXX is assigned.

            "CUSTOMER CREDITS" has the meaning set forth in section 10.2.1 of
      the Management Agreement.

            "CUSTOMER EQUIPMENT CHARGES" has the meaning set forth in section
      10.3.2.5 of the Management Agreement.

            "CUSTOMER EQUIPMENT CREDITS" has the meaning set forth in section
      10.3.2.2 of the Management Agreement.

            "CUSTOMER-RELATED SERVICES" has the meaning set forth in section
      3.2.2 of the Services Agreement.

            "CUSTOMER TAXES" means the amounts that Sprint PCS bills to Manager
      Accounts for taxes, including, without limitation, federal, state, and
      local sales, use, gross and excise tax.

                                       64

            "EFFECTIVE DATE" has the meaning set forth in the preamble of this
      Addendum.

            "ENTERPRISE VALUE" means either:

            (i) if the entity has issued publicly-traded equity, the combined
      book value of the entity's outstanding debt and preferred stock less cash
      plus the fair market value of each class of its publicly-traded equity
      other than any publicly-traded preferred stock. For the purposes of this
      definition, the fair market value of a class of the entity's
      publicly-traded equity (other than publicly-traded preferred stock) is
      equal to the product of:

                        (A) the number of issued and outstanding shares of the
                  class of publicly-traded equity as of the date of
                  determination, times

                        (B) the applicable average closing price (or average
                  closing bid, if traded on the over-the-counter market) per
                  share of the class of publicly-traded equity over the 21
                  consecutive trading days immediately preceding the date of
                  determination; or

            (ii) if the entity does not have issued publicly-traded equity, the
      combined book value of the entity's outstanding debt and equity less cash.

            "E911 PHASE I SURCHARGES" means all costs related to Phase I E911
      functionality.

            "E911 PHASE II SURCHARGES" has the meaning set forth in section
      10.3.2.6 of the Management Agreement.

            "ETC" has the meaning set forth in section 10.6.1 of the Management
      Agreement.

            "FEE BASED ON BILLED REVENUE" has the meaning set forth in section
      10.2.1 of the Management Agreement.

            "GROSS CUSTOMER ADDITIONS IN MANAGER'S SERVICE AREA" means the
      average number of Customers activated (without taking into consideration
      the number of Customers lost) during the previous month with an NPA-NXX
      assigned to the Service Area as reported in Sprint PCS' most recent
      monthly KPI report.

            "INITIAL 3G DATA FEE PERIOD" has the meaning set forth in section
      10.4.1.3(a) of the Management Agreement.

                                       65

            "INITIAL PRICING PERIOD" has the meaning set forth in section 3.2.1
      of the Services Agreement.

            "INTER SERVICE AREA FEE" has the meaning set forth in section 4.3 of
      the Management Agreement.

            "INVESTMENT BANKER" has the meaning set forth in section 9.3.2 of
      the Management Agreement.

            "MANAGER ACCOUNTS" has the meaning set forth in section 10.2.1 of
      the Management Agreement.

            "MANAGER MANAGEMENT PROCESS" has the meaning set forth in section
      12.1.2 of the Management Agreement.

            "MANAGER MANAGEMENT REPORT" has the meaning set forth in section
      12.1.2 of the Management Agreement.

            "NET BILLED REVENUE" has the meaning set forth in section 10.2.1 of
      the Management Agreement.

            "NEW COVERAGE" means the build-out in the Service Area that is in
      addition to the build-out required under the then-existing Build-out Plan,
      which build-out Sprint PCS or Manager decides should be built-out.

            "NPA-NXX" means NPA-NXX or an equivalent identifier, such as a
      network access identifier (NAI).

            "NUMBER OF CUSTOMERS IN MANAGER'S SERVICE AREA" means the average
      number of Customers with NPA-NXXs assigned to the Service Area reported in
      Sprint PCS' most recent monthly KPI report.

            "OTHER AFFILIATES" [ADDM V SS.2 AND ADDM VI, SS.2] has the meaning
      set forth in section 17.30 of the Management Agreement.

            "OUTBOUND ROAMING FEES" means the amounts that Sprint PCS or its
      Related Parties bills to Manager Accounts for calls placed on a non-Sprint
      PCS Network.

            "OVERALL CHANGES" has the meaning set forth in section 1.10(a) of
      the Management Agreement.

            "PROGRAM REQUIREMENT CHANGE" has the meaning set forth in section
      9.3.1 of the Management Agreement.

            "REQUIRED RESALE PARTICIPATION PERIOD" means the period from April
      1, 2004, until the later of (1) December 31, 2006 and (2) the expiration
      of any three-

                                       66

      year period beginning after December 31, 2006, for which Sprint PCS and
      Manager have reached agreement in accordance with section 10.4.1.1(c) with
      respect to the terms, fees and conditions applicable to Manager's
      participation in resale arrangements entered into by Sprint PCS.

            "RESELLER CUSTOMER" means customers of companies or organizations
      with a Private Label PCS Services or similar resale agreement with Sprint
      PCS or Manager.

            "RESELLER CUSTOMER FEES" has the meaning set forth in section
      10.4.1.1 of the Management Agreement.

            "SCCLP" has the meaning set forth in section 3.4.2(b) of the
      Management Agreement.

            "SELECTED SERVICES" means Services.

            "SERVICE AREA NETWORK" means the network that is directly required
      for the provision of telecommunications services to Customers and is
      managed by Manager under the Management Agreement in the Service Area
      under the License.

            "SERVICES" has the meaning set forth in section 2.1.1 of the
      Services Agreement.

            "SETTLED-SEPARATELY MANAGER EXPENSES" has the meaning set forth in
      section 3.2.5 of the Services Agreement.

            "SOFTWARE" means only that software and software features currently
      existing or developed in the future that are used in connection with
      telecommunications equipment owned or leased by Manager in Manager's
      provisioning of wireless services in the Service Area and includes,
      without limitation, software maintenance, updates, improvements, upgrades
      and modifications. "Software" expressly excludes:

                        (i) software "rights to use" licenses to the extent paid
                  to the licensor directly by Manager, and

                        (ii) software operating Sprint PCS' national platforms,
                  billing system platforms, customer service platforms and like
                  applications.

            "SOFTWARE FEES" means costs associated (including applicable license
      fees) with procuring software, software maintenance, software upgrades and
      other software costs needed to provide uniform and

                                       67

      consistent operation of the wireless systems within the Sprint PCS
      Network.

            "SPRINT PCS" means any or all of the following Related Parties who
      are License holders or signatories to the Management Agreement: Sprint
      Spectrum L.P., a Delaware limited partnership, WirelessCo, L.P., a
      Delaware limited partnership, SprintCom, Inc., a Kansas corporation,
      PhillieCo Partners I, L.P., a Delaware limited partnership, PhillieCo,
      L.P., a Delaware limited partnership, Sprint Telephony PCS, L.P., a
      Delaware limited partnership, Sprint PCS License, L.L.C., a Delaware
      limited liability company, American PCS Communications, LLC, a Delaware
      limited liability company, and APC PCS, LLC, a Delaware limited liability
      company. Any reference in the Management Agreement or Services Agreement
      to Cox Communications PCS, L.P., a Delaware limited partnership, or Cox
      PCS License, L.L.C., a Delaware limited liability company, is changed to
      Sprint Telephony PCS, L.P., a Delaware limited partnership, or Sprint PCS
      License, L.L.C., a Delaware limited liability company, respectively, to
      reflect name changes filed with the Delaware Secretary of State in 2002.

            "SPRINT PCS ARPU" means the average revenue per user publicly
      announced by Sprint PCS or its Related Parties for the most recent
      calendar year. Sprint PCS ARPU is generally calculated by dividing
      wireless service revenues by average wireless subscribers.

            "SPRINT PCS RETAIL YIELD FOR VOICE AND 2G DATA USAGE" means the
      quotient calculated by dividing (a) Sprint PCS ARPU less the 3G data
      component in the Sprint PCS ARPU by (b) the reported minutes of use per
      subscriber for the calendar year for which the Sprint PCS ARPU was
      calculated.

            "SPRINT PCS RETAIL YIELD FOR 3G DATA USAGE" means the quotient
      calculated by dividing (a) the 3G data component in the Sprint PCS ARPU by
      (b) the kilobytes of use for 3G data usage per subscriber for the calendar
      year for which the Sprint PCS ARPU was calculated.

            "SUBSIDY FUNDS" has the meaning set forth in section 10.6.1 of the
      Management Agreement.

            "3M-POPS MANAGER" means any Other Manager whose ultimate parent
      entity (as defined by the Hart-Scott-Rodino Antitrust Improvements Act of
      1976) controls entities with 3 million or more covered pops.

            "TOTAL SOFTWARE COST" means the amount paid by Sprint PCS to the
      vendor directly associated with the Software used by Sprint PCS, Manager
      and Other Managers (if and to the extent Manager and the Other Managers
      have agreed to pay any Allocable Software Fee) for the Sprint PCS Network
      for which Manager is not obligated to pay the Software

                                       68

      vendor directly, net of any discounts or rebates and excluding any mark-up
      by Sprint PCS for administrative or other fees.

            "TRANSITION DATE" has the meaning set forth in section 10.12.3 of
      the Management Agreement.

            "TYPE II REPORT" has the meaning set forth in section 12.1.2 of the
      Management Agreement.

            "ULTIMATE PARENT" has the meaning set forth in the Hart-Scott-Rodino
      Antitrust Improvements Act of 1976.

            "USF CHARGES" has the meaning set forth in section 10.3.2.7 of the
      Management Agreement.

            "VENDOR SOFTWARE" has the meaning set forth in section 1.3.4(b) of
      the Management Agreement.

            "WIRELESS MOBILITY COMMUNICATIONS NETWORK" means a radio
      communications system operating in the 1900 MHz spectrum range under the
      rules designated as Subpart E of Part 24 of the FCC's rules.

            "WLNP SURCHARGES" has the meaning set forth in section 10.2.4 of the
      Management Agreement.

            "WRITE-OFFS" has the meaning set forth in section 10.3.1 of the
      Management Agreement.

            "YEAR 2000 COMPLIANCE" has the meaning set forth in section 17.29 of
      the Management Agreement.

B. CROSS-REFERENCES TO OTHER PARAGRAPHS IN PREVIOUS ADDENDA.

      Listed below are those paragraphs in the previous addenda that are
interpretations or applications of the Management Agreement, the Services
Agreement, the Trademark License Agreements or the Schedule of Definitions that
are not listed above. These serve as cross-references to facilitate finding
provisions in the previous addenda. The number shown at the beginning of each
item is the paragraph reference in the designated Addendum.

      Addendum I
      ----------

            3.    Compliance

      Addendum II
      -----------

                                       69

            1.    Consent and Agreement ("C&A")-Related: Use of Loan Proceeds
            2.    C&A-Related: C&A Not Assignable
            3.    C&A-Related: Notices
            4.    C&A-Related: Revised Financing Plan
            5.    C&A-Related: No Default
            6.    C&A-Related: No Known Breach under Management Agreement
            8.    Consent to Change of Control
            9.    Reaffirmation of Sprint Agreements
            10.   Counterparts

      Addendum III
      ------------

            1.    C&A-Related:  Use of Loan Proceeds

      Addendum IV
      -----------

            1.    C&A-Related:  Use of Loan Proceeds

      Addendum V
      ----------

            1.    C&A-Related:  Use of Loan Proceeds
            6.    C&A-Related:  Expiration of Limited Remedies Period
            7.    Revised Financing Plan
            9.    Reaffirmation of Sprint Agreements
            10.   Counterparts

      Addendum VI
      -----------

            1.    C&A-Related:  Use of Loan Proceeds
            3.    Financing Plan
            4.    Reaffirmation of Sprint Agreements
            5.    Counterparts

      Addendum VII
      ------------

            1.    Swap-related: Modification of Build-out Plan
            2.    Swap-related: Change in Spectrum Range
            3.    Swap-related: Disaggregation
            4.    Swap-related: Consideration
            5.    Swap-related: Expenses
            7.    Notice Addresses
            8.    Notices
            9.    Counterparts

      Addendum VIII
      -------------

                                       70

            1.    Swap-related: Superseding Sections of Addendum VII
            3.    Swap-related: Change in Spectrum Range
            4.    Swap-related: Disaggregation
            5.    Swap-related: Consideration
            6.    Swap-related: Expenses
            7.    Counterparts

      Addendum VIII
      -------------

            None (all superseded by Addendum IX).

      Addendum IX (initial simplified pricing addendum)
      -----------

            None (all superseded by Addendum X).

      Addendum X
      ----------

            None (all superseded by this Addendum).

                                       71

C. OTHER PROVISIONS.

      1. MANAGER AND SPRINT PCS' REPRESENTATIONS. Manager and Sprint PCS each
represents and warrants that its respective execution, delivery and performance
of its obligations described in this Addendum have been duly authorized by
proper action of its governing body and do not and will not violate any material
agreements to which it is a party. Each of Manager and Sprint PCS also
represents and warrants that there are no legal or other claims, actions,
counterclaims, proceedings or suits, at law or in arbitration or equity, pending
or, to its knowledge, threatened against it, its Related Parties, officers or
directors that question or may affect the validity of this Addendum, the
execution and performance of the transactions contemplated by this Addendum or
that party's right or obligation to consummate the transactions contemplated by
this Addendum.

      2. REAFFIRMATION OF SPRINT AGREEMENTS. Each of the undersigned reaffirms
in their entirety the Management Agreement, the Services Agreement and the
Trademark License Agreements, together with their respective rights and
obligations under those agreements.

      3. COUNTERPARTS. This Addendum may be executed in one or more
counterparts, including facsimile counterparts, and each counterpart will have
the same force and effect as an original instrument as if the parties to the
aggregate counterparts had signed the same instrument.

            [THE REMAINDER OF THIS PAGE IS LEFT BLANK INTENTIONALLY.]

                                       72

      The parties have caused this Addendum XI to be executed as of the date
first above written.

                                            SPRINT SPECTRUM L.P.

                                            By: /s/ Steve Nielsen
                                                --------------------------------
                                                Name: Steve Nielsen
                                                Title: SVP Finance

                                            WIRELESSCO, L.P.

                                            By: /s/ Steve Nielsen
                                                --------------------------------
                                                Name: Steve Nielsen
                                                Title: SVP Finance

                                            SPRINT COMMUNICATIONS COMPANY L.P.

                                            By:  /s/ Tom Murphy
                                                 -------------------------------
                                                 Name:  Tom Murphy
                                                 Title: Senior Vice President -
                                                        Communication & Brand
                                                        Corporate Management

                                            ALAMOSA WISCONSIN LIMITED
                                            PARTNERSHIP
                                            a Wisconsin limited partnership

                                            By:  ALAMOSA WISCONSIN GP, L.L.C.
                                                 a Delaware limited liability
                                                 company, as the sole general
                                                 partner

                                            By:  /s/ David E. Sharbutt
                                                 -------------------------------
                                                 David E. Sharbutt
                                                 President

                                       73

                                                                      SCHEDULE 1

Program Requirement 3.5.2 dated August 13, 2002, and labeled "Exhibit 3.5.2
Program Requirement for Voluntary Resale of Products and Services By Voluntary
Resellers Under the Private Label Solutions Program" is amended by replacing the
title, preamble and general terms with the following, and by deleting all
attachments:

             PROGRAM REQUIREMENT FOR RESALE OF PRODUCTS AND SERVICES
                                       BY
               RESELLERS UNDER THE PRIVATE LABEL SOLUTIONS PROGRAM

                                    (5/1/04)

      Sprint PCS' Resale Program ("RESALE PROGRAM") is described in Section
3.5.2 of the Sprint PCS Management or Affiliations Agreement and consists of
this Program Requirement 3.5.2 (the "PROGRAM REQUIREMENT 3.5.2") and separate
attachments to the Program Requirement 3.5.2 ("ATTACHMENT(S)"). Each Attachment
is a separate Resale Program and includes a specific list of companies with
which Sprint PCS contracts to sell Sprint PCS Products and Services under brand
names other than the Brands.

      "Capitalized terms used and not otherwise defined in this Program
Requirement 3.5.2 have the meaning ascribed to them in the Schedule of
Definitions in the Management or Affiliations Agreement. Section and Exhibit
references are to Sections and Exhibits of the Management or Affiliations
Agreement unless otherwise noted.

      "As used in this Program Requirement "NPA-NXX" of Manager or Affiliate
means a NPA-NXX in the Service Area of that Manager or Affiliate or an
equivalent identifier, such as a network access identifier (NAI).

GENERAL TERMS

      Unless otherwise specified, the Program Requirements outlined below apply
to the resellers set forth in the Attachments.

      1. PRODUCTS AND SERVICES OFFERED. Sprint PCS may from time to time limit
the Sprint PCS Products and Services that are provided to resellers. Manager
will provide to resellers those Sprint PCS Products and Services that Sprint PCS
provides to the resellers, and Manager will support products and services
offered resellers in the same fashion that Manager supports similar Sprint PCS
Products and Services.

      2. INFORMATION AND MINS. Manager will allow Sprint PCS access to
information necessary to bill resellers, including Call Detail Records and basic
provisioning information. For purposes of clarification, all such information
will constitute "Confidential Information" for purposes of the Management
Agreement.

Neither Sprint PCS nor Manager will have access to resellers' end-users'
personal information. Sprint PCS will administer NPA-NXXs available for
resellers in a manner substantially the same as the MIN allocation process in
place for Sprint PCS owned markets. Sprint PCS will provide resellers with an
unbranded coverage map and zip code information for the Manager's service
area(s) substantially the same as the coverage map and zip code information
provided for Sprint PCS owned service areas.

      3. CONTACTS AND DISPUTES. Manager will direct any questions or disputes
regarding a reseller or resale arrangement to the designated representative(s)
within the Management Agreement and will not contact the resellers directly. Any
disputes between Manager and Sprint PCS regarding a resale arrangement will be
resolved under the terms of the Management Agreement.

      4. PRICING: SIX-SECOND INCREMENT BILLING. For all QuickNet Connect (QNC)
data and other traffic on the Manager's Service Area Network for which Sprint
PCS bills a reseller in six-second increments or some other incremental
measurement other than one-minute ("OTHER INCREMENT"), Sprint PCS will settle
with Manager in six-second increments or such Other Increment, as applicable.
Billed charges (per call or event) that result in fractional cents may be
rounded up to the next whole cent.

      5. SPRINT 3G DATA SERVICE. In addition to reselling certain Sprint PCS
Products and Services under brand names other than the Brands, some resellers
are also permitted to sell Sprint's 1XRTT advanced multimedia data services and
premium services associated with the PCS Vision service ("SPRINT 3G DATA
SERVICE") using the Sprint and PCS Vision service marks. If Manager specifically
consented to a reseller's use of the Brands in selling Sprint 3G Data Service in
the Manager's Service Area, the Manager will be compensated for Sprint 3G Data
Service as follows:

      The revenue for Sprint 3G Data Service sold by resellers using the Brands
      to reseller subscribers having an NPA-NXX of Manager will be treated as
      Billed Revenue under the Management Agreement. Billed Revenue will be
      based on reseller specific Sprint 3G Data Service pricing set forth in
      Attachment 1.1 to Program Requirement 3.5.2. From time to time, Sprint may
      amend the rates charged to Voluntary Resellers for Sprint 3G Data Service.

      6. SHORT MESSAGE SERVICE (SMS). For SMS messages on the Manager's network
used by subscribers of Voluntary Resellers with an NPA-NXX of Manager, Manager
will be compensated at the rate set forth in Attachment 1.2 to Program
Requirement 3.5.2, which may be amended from time to time in accordance with the
Management Agreement. For SMS messages used by subscribers of Voluntary
Resellers with an NPA-NXX of Manager, there will be no compensation either paid
or owed when such subscribers are traveling outside of the Manager's Service
Area.

      SMS messages means circuit-switched short alphanumeric messages on a
Voluntary Reseller subscriber's handset.

      7. FUTURE SERVICES. If Sprint PCS elects to enter into resale arrangement
with any then existing resellers or new resellers for any services other than
those services described in the current Attachments to this Program Requirement
3.5.2 ("FUTURE SERVICES"), Manager is not required to activate subscribers for
the Future Services with an NPA-NXX of Manager until the next available opt out
date. If Manager does not elect to opt out of a Future Services at the first opt
out date following the date that Manager is notified in writing of the resale
arrangement for Future Services, Manager must allow the then existing resellers
of the Future Services and all future resellers of the Future Services to
activate subscribers with an NPA-NXX of Manager and Manager must support those
resellers of Future Services throughout the term of their resale arrangements
with Sprint PCS, including any renewal or phase out periods. Sprint PCS will
compensate Manager for the resale of Future Services at rates to be established
in future Attachments to Program Requirement 3.5.2, as amended from time to time
in accordance with the Management Agreement, which rates will be communicated in
writing to Manager in advance.

                 ATTACHMENT NO. 1.0 TO PROGRAM REQUIREMENT 3.5.2

                                 RESALE PROGRAM

This Attachment No. 1.0 to Program Requirement 3.5.2 contains the list of
resellers included in the Resale Program as of April 1, 2004.

RESELLERS

                                                         Effective
                                                         Renewal          Renewal
                                                         Date             Date
                                                         ----             ----
                                                         Period *
                                                         --------

Vartec Telecom, Inc. (Excel)                             9/15/2000        12/15/2003    3 Years
ZefCom, L.L.C. (Telespire)                               11/17/2000       11/17/2003   3/31/2006
Working Assets Funding Service, Inc.(Working Assets)     12/1/2001        12/31/2003    3 Years
Wherify Wireless, Inc. (Wherify Wireless)                1/7/2002         1/7/2005
QUALCOMM Incorporated (Qualcomm / GlobalTracs)           1/8/2002         1/8/2005
Star Number, Inc. (Liberty Wireless)                     8/2/2002         8/2/2005
Telco Group, Inc. (STI Mobile)                           2/25/2003        2/25/2006
TRANZACT (Sears Connect)                                 3/21/2003        3/21/2006
Hal Inc. (U-Mobile PCS)                                  6/12/2003        6/12/2006
Wireless Retail Inc. (Airlink Mobile)                    6/17/2003        6/17/2006
Phonetec, L.P. (PhoneTec)                                6/26/2003        6/26/2006
Qwest Wireless, LLC (Qwest)                              8/3/2003         3/3/2009
TracFone Wireless, Inc. (TracFone)                       1/22/2004        1/22/2007

* If applicable.  Not including phase out periods.

Attachment No. 1.0 to Program Requirement 3.5.2 will be updated as new resellers
enter into a resale arrangement with Sprint PCS.

                 ATTACHMENT NO. 1.1 TO PROGRAM REQUIREMENT 3.5.2

                         SPRINT 3G DATA SERVICE PRICING

A)    QWEST WIRELESS

Listed below are the Qwest monthly recurring charges ("MRC") and Adjustment
Rates for Sprint 3G Data Service. Qwest will be billed the following MRC and
Adjustment Rate for each subscriber that uses any Qwest service enabled by
Sprint 3G Data Service.

HANDSET DATA SERVICE

Data Transport/Web Browsing/Third Party Instant Messaging

      o    MRC                                    $8.10 (unlimited)

      o    Adjustment Rate                        $0.002 per Kb

ADJUSTMENT RATE:

On a monthly basis, Sprint will calculate (as described below) the Sprint
average kilobytes per retail handset subscriber ("SAKPS") and the Qwest average
kilobytes per handset subscriber ("QAKPS"). If the QAKPS exceeds the SAKPS,
Sprint will charge Qwest an amount equal to the difference between the SAKPS and
the QAKPS multiplied by the total number of End users, multiplied by the
Adjustment Rate detailed above.

Sprint will calculate SAKPS by using the total number of kilobytes generated by
Sprint retail handset end users divided by the average number of Sprint retail
handset end users for the previous fiscal quarter. For example, the SAKPS for
May will be divided by the average number of Sprint retail handset end users for
the 1st fiscal quarter (January-March).

Average number of Sprint retail handset end users for the quarter is equal to
the beginning number of Sprint retail handset end users plus the ending number
of Sprint retail handset end users, divided by two.

QAKPS is equal to the total number of kilobytes generated by Qwest handset End
Users divided by the average number of Qwest handset End Users for the previous
fiscal quarter.

AVERAGE NUMBER OF QWEST HANDSET END USERS FOR THE QUARTER IS EQUAL TO THE
BEGINNING NUMBER OF QWEST HANDSET END USERS PLUS THE ENDING NUMBER OF QWEST
HANDSET END USERS, DIVIDED BY TWO.

In making the calculations described in this section, PDAs, "smart phones" and
other similar devices along with air cards will not be considered "handsets" as
that term is used therein.

THE PRICING IN THIS ATTACHMENT NO. 1.1 TO PROGRAM 3.5.2 IS SUBJECT TO CHANGE AS
SPRINT RETAIL PRICES OR INCLUDED SERVICES CHANGE.

                 ATTACHMENT NO. 1.2 TO PROGRAM REQUIREMENT 3.5.2

                          SHORT MESSAGE SERVICE PRICING

Unless otherwise specified in this Attachment 1.2 to Program Requirement 3.5.2,
Manager will be compensated at the rates listed below by Voluntary Reseller.

Short Message Service Rate:     $0.0246 per SMS message

Qwest SMS Rate:                 $0.0110 per SMS message

                                  EXHIBIT 10.3
                                  ------------

100% AFFILIATE RETAINED AMOUNTS

         Roaming Revenue
         International Roaming Credits
         Affiliate Equip Sale On Acct

100% SPRINT PCS RETAINED AMOUNTS

         Accrued Sales Taxes
         Accrued Federal Excise Taxes
         Collected Insurance

                                    EXHIBIT 1
                                    ---------

                  ILLUSTRATIVE CALCULATION FOR CASH SETTLEMENT
                  --------------------------------------------

CASH SIMPLIFICATION
ILLUSTRATIVE ONLY

                                                    --------------------------
                                                             MONTHLY
                                                    --------------------------
WRITE-OFFS                                              $ 1,235

BILLED REVENUE                                          $10,350
CUSTOMER CREDITS                                           (970)
                                                    ---------------
NET BILLED REVENUE                                      $ 9,380         82.5%
CUSTOMER EQUIPMENT CREDITS                                  (66)        -0.6%
100% AFFILIATE RETAINED AMOUNTS                             235          2.1%
100% SPRINT PCS RETAINED AMOUNTS                          1,479         13.0%
CUSTOMER EQUIPMENT CHARGES                                  175          1.5%
E911 SURCHARGES                                              65          0.6%
WIRELESS LOCAL NUMBER PORTABILITY CHARGES                    26          0.2%
USF CHARGES                                                  74          0.7%
                                                    --------------- ----------
AMOUNT BILLED (NET OF CUSTOMER CREDITS)                 $11,368        100.0%

FEE CALCULATION

NET BILLED REVENUE                                      $ 9,380
ALLOCATED WRITE-OFF                                      (1,019)
                                                    ---------------
                                                        $ 8,361
                                                             92%
                                                    ---------------
FEE BASED ON BILLED REVENUE                             $ 7,692

100% AFFILIATE RETAINED AMOUNTS                         $   235
    ALLOCATED WRITE-OFF                                     (26)
PHASE II E911 SURCHARGES                                     53
    ALLOCATED WRITE-OFF                                      (6)
WIRELESS LOCAL NUMBER PORTABILITY CHARGES                     2
    ALLOCATED WRITE-OFF                                      (0)
CUSTOMER EQUIPMENT CREDITS                                  (66)
    ALLOCATED WRITE-OFF                                       7
WRITE-OFF FOR CUSTOMER EQUIPMENT CHARGES                    (19)
                                                    ---------------
                                                        $   180

TOTAL                                                   $ 7,872
                                                    --------------------------

                                                                  SCHEDULE 2.1.1

                                  -SECTION A-

PRESENTLY OFFERED CCPU SERVICES - Activity Applied as % to Sprint PCS reported
CCPU

3G Fees
A/P Backhaul/Facility Disputes
Affiliate Utilities
ATM Soft Hand Off Bank Fees
BI Performance Services - Initiation
BI Performance Services - Maintenance
Bid Cost
Billing
Check Free
Clarify Maintenance Fee
CO Usage
Collection Agency Fees
Directory Assistance
E - Commerce PT
Enhanced Voicemail
Entrance Facility Expenses (Includes Terminating/Trunking Charge)
Ford Telematics
Gift Card Payable
Gift Card Receivable
Hal Riney Ad Kit
ICS Clearing House Costs (Includes Illuminet, Roaming Clearing House, and TSI)
LD Verification
LIDB / CNAM
Local Loop, COC, ACF, IXC, etc. (National Platform Expense - Local Loop Cost,
    Central Office Connection (COC), access Coordination Fee (ACF), Co-Location
    Charges, and Inter Exchange Carrier (IXC) Charges)
Lockbox 261
MCI Disconnect Adjusted
National Platform - COA
National Platform Disputes
National Platform (2G) (Includes Voice Activated Dialing)

NATIONAL PLATFORM COMPONENT
FCAPS (FAULT, CONFIGURATION, ACCOUNTING, PERFORMANCE, SECURITY)
         Capital Projects
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

IN (INTELLIGENT NETWORK)
         Capital Expense
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

OSSN
         Capital Expense
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

3G
         Capital Projects
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

OPERATOR SERVICE
         Vendor Fee

WIRELESS WEB
         Capital Projects
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

MESSAGING
         Capital Projects
         Expense Projects
         Circuit Expense
         CLOH
         Labor

         Forecasts

VAD
         Capital Projects
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

VOICE MAIL
         Capital
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

SOFTWARE MAINTENANCE
         Openwave
         Hewlett Packard
         Comverse
         Marconi
         Lucent
         Commworks
         Four Corners
         Other Vendors (39)

Northwest Frequent Flyer
Premium Vision Services
PreNet
Pricing
Pro Text Messaging Plan
Ringers & More (Includes SBF and PT fees)
Telecheck Charge
Telematics
Text Messaging Plan
TSC Usage
Type 1 Affiliate Long Distance
Voice Command Web
Wireless Web

                                   -SECTION B-

PRESENTLY OFFERED CPGA SERVICES - Activity Applied as % to Sprint PCS reported
CPGA

500 Minute Promotion Credit

Activations - Customer Solutions
Activations - E-Commerce (Includes On Line (Web) Activations)
Activations - Telesales
Credit Check Fee
Customer Solutions - Early Life
Demo Phones
EarthLink
Hal Riney Service
Handset Logistics
Handset Obsolesence Fee and Carrying Costs
Local/Indirect Commission
Marketing Collateral Destruction
NAM/CAM
One Sprint Telesales
PGA Expenses
PLS Commission
SmartWorks Printing

                                   -SECTION C-

PRESENTLY OFFERED CCPU SERVICES - Activity Settled Separately

Affiliate Project Authorizations
Long Distance
E911 Phase I Revenue
Microwave Clearing
Roaming
Software Fees
Sprint Local Telephone Usage
Taxes Paid on Behalf of Type III Affiliates
Tower Lease
Travel Revenue and Expense
Upgrade Commission - 2 Step Channel
Vendor Usage-Based Charges on New Products
Wholesale Revenue and Expense

                                   -SECTION D-

PRESENTLY OFFERED CPGA SERVICES -Activity Settled Separately

3G Device Logistics Fee
3rd Party Spiffs
Accessory Margin
Commissions - National 3rd Party
Commissions - Other 3rd Party
Coop Advertising - Local 3rd Party
Coop Advertising - National 3rd Party
Handset returns
Handset subsidies
Handsets

Marketing Collateral (excluding destruction)
Meeting Competition Fund
RadioShack Promos (Includes RadioShack Golden Quarter, Jumpstart, Relaunch,
     Sprint to Vegas, and Break the Bank)
Rebate Administrative Expense
Rebates
Reciprocal Retail Store Cost Recovery
Sprint LDD Commission Third Party
Promotions Upgrade Commission - RadioShackADDENDUM XII
                                       TO
                       SPRINT PCS MANAGEMENT AGREEMENT AND
                          SPRINT PCS SERVICES AGREEMENT

             AMENDING THESE AGREEMENTS FURTHER AND RESTATING CERTAIN
                       PARAGRAPHS IN ADDENDA I THROUGH XI

                               DATED JUNE 14, 2004

MANAGER:          ALAMOSA MISSOURI, LLC (formerly known as Roberts Wireless
                  Communications, LLC)

SERVICE AREA BTAS:

Missouri          Cape Girardeau # 66
                  Columbia # 90
                  Jefferson City # 217
                  Joplin # 220
                  Kirksville # 230
                  Poplar Bluff # 355
                  Rolla # 383
                  St. Joseph # 393
                  Sedalia # 414
                  Springfield # 428
                  West Plains # 470

Kansas            Pittsburg # 349
                  Kansas City # 226
                           (Atchison County, KS only)

Illinois          Carbondale # 67
                  Quincy    # 367

                  This Addendum XII (this "ADDENDUM") contains amendments to the
Sprint PCS Management Agreement, the Sprint PCS Services Agreement, the Sprint
Trademark and Service Mark License Agreement and the Sprint Spectrum Trademark
and Service Mark License Agreement, each of which was entered into on June 8,
1998 by the same parties to this Addendum.

                  The Management Agreement, Services Agreement and Trademark
License Agreements were amended by:

                  (1)      Addendum I dated June 8, 1998,
                  (2)      Addendum II dated October 6, 1998,
                  (3)      Addendum III dated January 21, 1999,

                                       1

                  (4)      Addendum IV dated September 8, 1999,
                  (5)      Addendum V dated February 22, 2000,
                  (6)      Addendum VI dated May 5, 2000,
                  (7)      Addendum VII dated July 27, 2000,
                  (8)      Addendum VIII dated February 14, 2001,
                  (9)      Addendum IX dated November 29, 2002,
                  (10)     Addendum X dated September 12, 2003, and
                  (11)     Addendum XI dated March 26, 2004.

                  The purposes of this Addendum are to (1) amend the Management
Agreement, the Services Agreement, the Trademark License Agreements and the
Schedule of Definitions and restate those paragraphs in the addenda executed
previously that amend the Management Agreement, the Services Agreement, the
Trademark License Agreements and the Schedule of Definitions (see section A
below), and (2) provide cross-references to those paragraphs in addenda executed
previously that are not restated in this Addendum (see section B below).

                  The terms and provisions of this Addendum control over any
conflicting terms and provisions contained in the Management Agreement, the
Services Agreement, the Trademark License Agreements and the Schedule of
Definitions. The Management Agreement, the Services Agreement, the Trademark
Licenses Agreements, the Schedule of Definitions and all prior addenda continue
in full force and effect, except for express modifications made in this
Addendum. This Addendum does not change the effective date of any prior
amendment made to the Management Agreement, the Services Agreement, the
Trademark License Agreements or the Schedule of Definitions through previously
executed addenda.

                  Capitalized terms used and not otherwise defined in this
Addendum have the meaning ascribed to them in the Schedule of Definitions or in
prior addenda. Section and Exhibit references are to sections and Exhibits of
the Management Agreement unless otherwise noted.

                  The parties entered into Addendum XI dated March 26, 2004, but
the parties acknowledge that Addendum XI is superseded in its entirety by this
Addendum. The parties are executing this Addendum as of the date noted above,
but this Addendum becomes effective on (the "EFFECTIVE DATE") either (1) March
1, 2004, if the Parties execute all of the following addenda by June 14, 2004:

     o    Alamosa Missouri, LLC Addendum XII,

     o    Alamosa Wisconsin Limited Partnership Addendum XI,

     o    Southwest PCS, L.P. Addendum VII,

     o    Texas Telecommunications, LP Addendum XII, and

                                       2

     o    Washington Oregon Wireless LLC Addendum VIII.

(2) the first calendar day of the first calendar month after the above addenda
are executed if the Parties execute the above addenda after June 14, 2004.

                  On the Effective Date the Management Agreement, the Services
Agreement, the Trademark License Agreements and the Schedule of Definitions are
amended and restated as follows:

A. NEW AMENDMENTS AND RESTATEMENT OF PREVIOUS AMENDMENTS TO SPRINT PCS
AGREEMENTS.

                              MANAGEMENT AGREEMENT

     1. UPDATED SPRINT PARTIES [ADDM XI,SS.1]. Recital A is amended to read as
follows:

          A. Sprint Spectrum L.P., a Delaware limited partnership, WirelessCo,
     L.P., a Delaware limited partnership, SprintCom, Inc., a Kansas
     corporation, American PCS Communications, LLC, a Delaware limited liability
     company, APC PCS, LLC, a Delaware limited liability company, PhillieCo
     Partners I, L.P., a Delaware limited partnership, PhillieCo, L.P., a
     Delaware limited partnership, Sprint Telephony PCS, L.P., a Delaware
     limited partnership, and Sprint PCS License, L.L.C., a Delaware limited
     liability company, hold and exercise, directly or indirectly, control over
     licenses to operate wireless services networks.

     2. EXPANDED SERVICE AREA [ADDM VI,SS.1]. The Manager's Service Area
includes the Kansas City BTA (Atchison County, KS only) BTA No. 226.

     3. VENDOR PURCHASE AGREEMENT - SOFTWARE FEES [ADDM XI,SS.2; REVISED BY THIS
ADDENDUM]. Section 1.3 is amended to read as follows:

          Insert: "1.3.1 DISCOUNTED VOLUME-BASED PRICING." before the first
     paragraph.

          Insert: "1.3.2 SUBSCRIBER AND INFRASTRUCTURE EQUIPMENT." before the
     second paragraph.

          Insert: "1.3.3 EXCLUSIVE USE." before the third paragraph.

          Add a new section 1.3.4 as follows:

     1.3.4 SOFTWARE FEES.

                                       3

          (a) Manager acknowledges that Sprint PCS administers the testing and
     implementation of the Software (i.e., pushing of the Software) into the
     Service Area Network.

          (b) Sprint PCS, when obtaining software for its own use that is
     identical to the Software, will use commercially reasonable efforts to
     obtain a license from vendors providing for the right of Manager to use the
     Software in connection with telecommunications equipment manufactured by
     the vendor (collectively the software obtained by Sprint PCS for its own
     use and the Software that operates on telecommunications equipment
     manufactured by the vendor are for purposes of this section 1.3.4, the
     "VENDOR SOFTWARE"; when the term "Vendor Software" is used with respect to
     Manager, it means only the Software, and not the software used only by
     Sprint PCS).

          (c) Manager will arrange independently with the vendor to obtain a
     license if Sprint PCS cannot reasonably obtain a license for Manager. Any
     license that Manager obtains from a vendor must require the Vendor Software
     to be tested in Sprint PCS test beds by Sprint PCS and require Sprint PCS,
     not the vendor or Manager, to push the Vendor Software to the Service Area
     Network unless Sprint PCS otherwise consents in advance in writing. Sprint
     PCS agrees to test the Vendor Software in Sprint PCS test beds within a
     reasonable period after Manager reasonably requests the tests in writing.

          (d) Sprint PCS will:

                    (i) notify Manager in writing at least 60 days before the
               date of an automatic renewal of, or Sprint PCS' unilateral act to
               renew or extend, an agreement that provides Sprint PCS the right
               to use the Vendor Software, or

                    (ii) use reasonable efforts to notify Manager in writing
               before the date Sprint PCS intends to start negotiations with a
               vendor regarding extension, renewal, pricing or other material
               terms relating to Sprint PCS' and Manager's right to use the
               Vendor Software (whether for new Software or renewal of an
               existing license), and at least 60 days before the date Sprint
               PCS executes an agreement, extension or renewal.

          The notice by Sprint PCS will include the material terms and
     conditions of any such agreement or negotiations to the extent known at the
     time of the notice, including the network elements to be covered by the
     right to use the Vendor Software. Manager must notify Sprint PCS in writing
     within 30 days after receiving the notice described in the first sentence
     of this section 1.3.4(d) if Manager wants Sprint PCS to attempt to obtain
     or continue the right for Manager

                                       4

     to use the Vendor Software. Sprint PCS will renew or negotiate the
     agreement as if Manager will not be a user of the Vendor Software if
     Manager does not provide notice to Sprint PCS within the 30-day period.
     However, Sprint PCS may obtain pricing from the vendor for the Vendor
     Software that includes Manager as a user if obtaining the pricing does not
     obligate Manager to be a user.

          Sprint PCS will advise Manager upon Manager's reasonable request of
     the status of the Software negotiations if Manager requested Sprint PCS to
     obtain or continue the right for Manager to use the Vendor Software under
     Sprint PCS' agreement with the vendor. Sprint PCS will use commercially
     reasonable efforts to give Manager notice of the final pricing for the
     right to use the Vendor Software no less than 20 days before the expected
     execution or renewal of the agreement; provided that, in any event, Sprint
     PCS will give Manager notice of the final pricing no less than 3 Business
     Days before the expected execution or renewal of the agreement. If
     necessary, Manager agrees to use commercially reasonable efforts to enter
     into a nondisclosure agreement with the vendor to facilitate providing such
     final pricing to Manager.

          Manager may give Sprint PCS notice by the time set forth in Sprint
     PCS' notice to Manager (which time will not be less than 10 Business Days)
     that Manager does not intend to use the Vendor Software through the
     agreement between Sprint PCS and the vendor. If Manager does not give this
     final notice to Sprint PCS, Manager is deemed to agree to be a user of the
     Vendor Software through the agreement between Sprint PCS and the vendor and
     will pay the Allocable Software Fee (as defined below). Within 15 Business
     Days after execution of an agreement between Sprint PCS and the vendor,
     Sprint PCS will provide to Manager a forecast of Manager's Allocable
     Software Fee, the estimated payment due dates relating to the Allocable
     Software Fee, and the proportion of Manager's Allocable Software Fee
     forecast to be due on each payment due date.

          Sprint PCS does not have to obtain a license for Vendor Software for
     Manager, even if Manager requests Sprint PCS to obtain such license, if at
     any time before execution of the agreements granting the license Sprint PCS
     reasonably believes that Manager is more likely than not to unreasonably
     refuse to pay the Allocable Software Fee or Sprint PCS reasonably believes
     that the Manager is in such financial condition that Manager is more likely
     than not to be unable to pay the Allocable Software Fee.

          If Manager accepts the Vendor Software, Sprint will give Manager,
     Manager's proportional share of (i) any cash benefits relating specifically
     to the Vendor Software that Sprint PCS obtains from the vendor, and (ii) to
     the extent reasonably able to be made available to Manager, other benefits,
     including training, relating specifically to the Vendor Software.

                                       5

          (e) Sprint PCS will pay all Software Fees relating to the Vendor
     Software to the vendor if Sprint PCS obtains a license from the vendor that
     provides Manager the right to use the Vendor Software and Manager agrees to
     pay any applicable Allocable Software Fee in accordance with this section
     1.3.4(e). Manager will be deemed to agree to pay any applicable Allocable
     Software Fee if both:

                    (i) Manager has not taken the action described in paragraph
               (d) above to decline obtaining the right to use the Vendor
               Software through the agreement between Sprint PCS and the vendor,
               and

                    (ii) Sprint PCS obtains a license providing for the right of
               Manager to use the Vendor Software.

          Manager will pay Sprint PCS the Allocable Software Fee within 30 days
     after receipt of an invoice. Sprint PCS will invoice Manager only after
     Sprint PCS pays the underlying Software Fee to the vendor. The Allocable
     Software Fee will not include any amount for Software that is the same as
     or functionally equivalent to any Software (y) that is a component of any
     service for which a fee is charged under the Services Agreement or (z) for
     which Sprint PCS otherwise charges Manager under this agreement.

          Sprint PCS will calculate the "ALLOCABLE SOFTWARE FEE" as follows:

               For each vendor, multiply:

                    (i) the Total Software Cost of the Software Fees
               attributable to the Vendor Software for which Sprint PCS has
               obtained for itself, Manager and Other Managers a license or
               other right to use, by

                    (ii) the quotient of:

                         (A) the number of Customers and Reseller Customers with
                    an NPA-NXX assigned to the Service Area that are assigned to
                    a system using the Vendor Software, as reported in the most
                    recent monthly report that Sprint PCS issues before the date
                    that Sprint PCS prepares an Allocable Software Fee invoice,
                    divided by:

                         (B) the number of Customers and Reseller Customers that
                    are assigned to all systems using the Vendor Software, as
                    reported in the most recent monthly report that Sprint PCS
                    issues before

                                       6

                    the date that Sprint PCS prepares an Allocable Software Fee
                    invoice.

          (f) Sprint PCS will include with the invoice for the Allocable
     Software Fee a list of the component charges, if available from the Vendor.
     The Software Fees that Sprint PCS pays to the vendor will reflect rates no
     greater than commercial rates negotiated at arms' length. For purposes of
     clarification, the parties acknowledge the vendor may insist on a
     comprehensive fee without listing each component, but rather asserting that
     the fee covers all software necessary to operate the equipment. But Sprint
     PCS will provide to Manager a description of all the features and
     functionality in reasonable detail for all Software for which Manager is to
     pay an Allocable Software Fee.

          (g) Manager will not be charged the Allocable Software Fee for the
     Vendor Software after Manager:

                    (i) notifies Sprint PCS in writing within the periods
               allowed in section 1.3.4(d) that Manager declines to have Sprint
               PCS obtain a right for Manager to use the Vendor Software or that
               it does not intend to use the Vendor Software,

                    (ii) obtains its own license providing for Manager's right
               to use the Vendor Software, and

                    (iii) complies with the requirements of section 1.3.4(h).

          (h) Manager will obtain its own license providing for Manager's right
     to use the Vendor Software from the vendor if Manager elects not to have
     Sprint PCS attempt to obtain a right for Manager to use the Vendor Software
     under section 1.3.4(d). Manager will notify Sprint PCS in writing and
     deliver to Sprint PCS within 10 Business Days after Manager's execution of
     Manager's separate license, a signed document from the vendor confirming
     that:

                    (i) the vendor has provided Manager a separate license for
               the necessary software and the term of that license, which term
               with appropriate renewal rights, must be at least as long as the
               license Sprint PCS has from the vendor,

                    (ii) the fees paid by Manager to the vendor reflect
               commercial rates negotiated at arms' length,

                    (iii) the Vendor Software covered by Manager's license
               provides the usage and functionality necessary for

                                       7

               Manager to operate the Service Area Network in compliance with
               the Sprint PCS Technical Program Requirements, and

                    (iv) the Vendor Software may be tested in Sprint PCS test
               beds by Sprint PCS and will be pushed to the Service Area Network
               by Sprint PCS, not the vendor or Manager, unless Sprint PCS
               otherwise consents in advance in writing. Sprint PCS agrees to
               test the Vendor Software in Sprint PCS test beds within a
               reasonable period after Manager reasonably requests in writing.

     4. INTERCONNECTION [ADDM XI,SS.4]. Section 1.4 is amended and restated in
its entirety to read as follows:

          If Manager desires to interconnect a portion of the Service Area
     Network with another carrier and Sprint PCS can interconnect with that
     carrier at a lower rate, then to the extent that applicable laws, tariffs
     and agreements permit, Sprint PCS will use commercially reasonable efforts
     to arrange for the interconnection under its agreements with the carrier
     within a commercially reasonable period. Sprint PCS will bill the
     interconnection fees to Manager at actual cost.

     5. FORECASTING [ADDM XI,SS.5]. Section 1.6 is amended and restated in its
entirety to read as follows:

          1.6 FORECASTING. Manager and Sprint PCS will work cooperatively to
     generate mutually acceptable forecasts of important business metrics that
     they agree upon. The forecasts are for planning purposes only and do not
     constitute either party's obligation to meet the quantities forecast.

     6. REVISED FINANCING PLAN [ADDM XI, SS.6; REVISED BY THIS ADDENDUM].
Exhibit 1.7 attached to Addendum XI supersedes and replaces Exhibit 1.7 attached
to Addendum IX to the Management Agreement.

     7. INFORMATION [ADDM XI,SS.7]. A new section 1.9 is added to the Management
Agreement.

          1.9 ACCESS TO INFORMATION.

               1.9.1 NETWORK OPERATIONS.Manager and Sprint PCS will have access
          to, and may monitor, record or otherwise receive, information
          processed through equipment, including switches, packet data switching
          nodes and cell site equipment, that relates to the provision of Sprint
          PCS Products and Services or to the provision of telecommunications
          services

                                       8

          to Reseller Customers in the Service Area Network, if the access,
          monitoring, recording or receipt of the information is accomplished in
          a manner that:

                    (i) Does not unreasonably impede Manager or Sprint PCS from
               accessing, monitoring, recording or receiving the information,

                    (ii) Does not unreasonably encumber Manager's or Sprint PCS'
               operations (including, without limitation, Sprint PCS' real-time
               monitoring of the Sprint PCS Network status, including the
               Service Area Network),

                    (iii) Does not unreasonably threaten the security of the
               Sprint PCS Network,

                    (iv) Does not violate any law regarding the information,

                    (v) Complies with technical requirements applicable to the
               Service Area Network,

                    (vi) Does not adversely affect any warranty benefiting
               Manager or Sprint PCS (e.g., software warranties), and

                    (vii) With respect to the information processed through
               Manager's equipment, including its switches, does not result in a
               material breach of any agreement regarding the information (e.g.,
               national security agreements).

               Sprint PCS and Manager will immediately notify the other party
          and reasonably cooperate to establish new procedures for allowing both
          Manager and Sprint PCS to access, monitor, record and receive the
          information in a manner that meets the criteria in clauses (i) through
          (vii) above if either Manager or Sprint PCS reasonably determines that
          the other party is accessing, monitoring, recording or receiving the
          information described in this section 1.9.1 in a manner that does not
          meet the criteria in clauses (i) through (vii) above.

               Manager owns the information regarding the performance of its
          equipment. Each of Manager and Sprint PCS may use the information
          obtained under this section 1.9.1 for any reasonable internal business
          purpose, during the term of and after termination of this agreement,
          the Services Agreement and the Trademark License

                                       9

          Agreements, so long as the use would be in accordance with those
          agreements if those agreements were still in effect.

               1.9.2 CUSTOMER INFORMATION. Manager is entitled to receive
          information Sprint PCS accesses, monitors, records or receives
          concerning the Service Area Network or the Customers with NPA-NXXs
          assigned to Manager's Service Area, subject to the terms of this
          section 1.9.2 and section 1.9.3 and Manager's compliance with CPNI
          requirements and any other legal requirements applicable to the
          information.

               Sprint PCS will provide the information in the format that
          Manager requests at no additional charge to Manager if Sprint PCS
          accesses, monitors, records, receives or reports for its own use the
          information specific to Manager that Manager requests in the same
          format as Manager requests. Sprint PCS will use commercially
          reasonable efforts to provide the information within 5 Business Days.

               Sprint PCS will provide the information in the format that
          Manager requests if Sprint PCS accesses, monitors, records, receives
          or reports for its own use the information that Manager requests, but
          not in the same format that Manager requests, if Manager agrees to pay
          or reimburse Sprint PCS for the costs Sprint PCS reasonably incurs.
          Sprint PCS will use commercially reasonable efforts to provide the
          requested information within 15 Business Days.

               If Sprint PCS accesses, monitors, records or receives the
          information requested by Manager, but not in the same format that
          Manager requests, then Sprint PCS will provide the requested
          information as raw data, if:

                    (i) Sprint PCS chooses not to provide the information as
               described in the preceding paragraph, and

                    (ii) Manager agrees to pay or reimburse Sprint PCS for the
               costs Sprint PCS reasonably incurs.

          Sprint PCS will use commercially reasonable efforts to provide the raw
          data within 15 Business Days.

               Sprint PCS owns the information regarding the Customers. Each of
          Manager and Sprint PCS may use the information obtained under this
          section 1.9.2 during the term of and after termination of this
          agreement, the Services Agreement and the Trademark License Agreements
          so long as the use would be in accordance with those agreements if
          those agreements were still in effect.

                                       10

               1.9.3 LIMITATIONS AND OBLIGATIONS. Sprint PCS does not have to
          provide any information that Manager reasonably requests under this
          agreement or the Services Agreement that:

                    (i) Manager can obtain itself in accordance with section
               1.9.1 (if Sprint PCS has provided Manager with any necessary
               specifications requested by Manager as to how to obtain the
               information), unless Sprint PCS already has the information in
               its possession and has not previously delivered it to Manager,

                    (ii) Sprint PCS no longer maintains,

                    (iii) Manager has already received from Sprint PCS or its
               Related Parties,

                    (iv) Sprint PCS does not access, monitor, record, receive or
               report, or

                    (v) Sprint PCS must make system modifications to provide the
               raw data, including without limitation modifying or adding data
               fields or modifying code.

               Sprint PCS will provide Manager a copy of the then-current Sprint
          PCS document retention policy from time to time upon reasonable
          request.

               1.9.4 CONTRACTS. Sprint PCS will disclose to Manager the relevant
          terms and conditions of any agreement between Sprint PCS and any third
          party:

                    (i) with which Manager must comply, directly or indirectly,
               under the Management Agreement, the Services Agreement or any
               Program Requirement,

                    (ii) from which Manager is entitled to any benefit, or

                    (iii) that relate to any pass-through amounts that Sprint
               PCS charges Manager under this agreement or Settled-Separately
               Manager Expenses under the Services Agreement.

          In each case Sprint PCS' disclosure will be in sufficient detail to
          enable Manager to determine the obligations or benefits with which
          Manager must comply or benefit or the charges or expenses to be paid
          by Manager. Sprint PCS may provide to Manager copies of the agreements
          or the relevant terms and conditions of such agreements in electronic
          format

                                       11

          upon notice to Manager, including by posting the copies or relevant
          terms and conditions to a secure website to which Manager has access.
          Once each calendar year and from time to time when a change is
          effected to any relevant term or condition, Manager may request copies
          of the agreements that are not posted to the secure website or whose
          relevant terms and conditions are not posted to the secure website.

               Sprint PCS will provide a copy of the agreement to Manager to the
          extent permissible by the terms of the agreement. Sprint PCS will
          allow Manager or its representatives to review a copy of the agreement
          to the extent permissible by the agreement if the agreement prohibits
          Sprint PCS from providing Manager a copy. Sprint PCS will satisfy the
          requirements of this section 1.9.4 if it chooses to provide a copy of
          the agreement in electronic form on a server that Sprint PCS
          designates. Sprint PCS will use commercially reasonable efforts to
          obtain the right from the third party, if required, to provide a
          complete copy to Manager of any agreement between Sprint PCS and any
          third party of the type described in this section 1.9.4.

     8. MOST FAVORED NATION [ADDM XI,SS.8; REVISED BY THIS ADDENDUM]. A new
section 1.10 is added to the Management Agreement:

          1.10 SUBSEQUENT AMENDMENTS TO OTHER MANAGERS' MANAGEMENT AGREEMENTS
     AND SERVICES AGREEMENTS. Manager has the right to amend the terms in its
     Management Agreement and Services Agreement as described in this section
     1.10 if during the period beginning on the date of this Addendum and ending
     December 31, 2006, any of the terms of a 3M-pops Manager's Management
     Agreement or Services Agreement are amended in any manner for any reason to
     be more favorable to the 3M-pops Manager than the terms of Manager's
     Management Agreement or Services Agreement are to Manager, subject to the
     following:

               (a) All of the Alamosa Managers must elect to accept all, but not
          less than all, of the terms of the 3M-pops Manager's Management
          Agreement and Services Agreement agreed to since the Effective Date
          (including accepting existing terms that relate to the changes or
          terms that were previously changed and not previously accepted by
          Manager but that remain a part of the latest version of the 3M-pops
          Manager's agreement) (collectively, but excluding the changes
          described in paragraphs (b) and (c) below, the "OVERALL CHANGES"),

               (b) Manager will not be required to accept any changes involving
          payment of specific disputed amounts arising under the

                                       12

          Management Agreement or Services Agreement of the 3M-pops Manager, and

               (c) No amendments in Manager's Management Agreement and Services
          Agreement will be made to reflect changes made in a 3M-pops Manager's
          Management Agreement and Services Agreement if such changes are:

                    (i) made solely because the 3M-pops Manager owns spectrum on
               which all or a portion of its network operates, unless the
               3M-pops Manager acquired this spectrum from Sprint PCS or its
               Related Parties after the Effective Date, or

                    (ii) compelled by a law, rule or regulation that applies to
               the 3M-pops Manager, but not to Manager, or

                    (iii) made solely to modify the build-out plan.

               Sprint PCS will prepare and deliver to Manager either an addendum
          containing the Overall Changes that have been made to the 3M-pops
          Manager's agreements in all of its addenda or copies of the 3M-pops
          Manager's amended and restated Management Agreement, Services
          Agreement and Trademark License Agreements (in each case redacted to
          protect the identity of the 3M-pops Manager) within 10 Business Days
          after the later of the effective date expressly stated in the addendum
          or other instrument containing these changes and the date of the
          addendum or other instrument. Manager then has 30 days to notify
          Sprint PCS that Manager wants the Overall Changes.

               If Manager does not notify Sprint PCS in this 30-day time period
          in writing that it wants the Overall Changes, no changes will be made
          in the agreements between Manager and Sprint PCS and Manager will be
          deemed to have waived its rights under this section 1.10 with respect
          to the Overall Changes.

               If Manager notifies Sprint PCS within the 30-day period in
          writing that it wants the Overall Changes, Sprint PCS will prepare,
          execute and deliver to Manager an addendum reflecting the Overall
          Changes. The new addendum will have the same effective date as the
          addendum or the restated Management Agreement, Services Agreement and
          Trademark License Agreements between Sprint PCS and the 3M-pops
          Manager that gave rise to the new addendum. For purposes of
          clarification, if the addendum or other instrument between Sprint PCS
          and the 3M-pops Manager provides or defines a specific date that is
          the effective date of that addendum or other instrument then the
          effective date of the new addendum will be the same as that specific
          date. Manager will have 15 days to review the new

                                       13

          addendum and notify Sprint PCS if Manager determines any inaccuracies
          are reflected in the new addendum. Sprint will correct those
          inaccuracies and provide a corrected new addendum to Manager within 10
          Business Days after Manager's notification.

               No changes will be made in the agreements between Manager and
          Sprint PCS if all the Alamosa Managers do not execute and return their
          respective signed addenda within 30 days after receipt of the signed
          addenda (or the corrected signed addenda, if applicable, pursuant to
          the previous paragraph), in which case Manager will be deemed to have
          waived its rights under this section 1.10 with respect to the Overall
          Changes contained in the addendum presented.

               If Manager and Sprint PCS disagree as to whether the terms of the
          signed addendum accurately reflect the Overall Changes, then the
          parties will submit to binding arbitration in accordance with section
          14.2, excluding the escalation process set forth in section 14.1. If
          the arbiter rules in favor of Manager, then Sprint PCS will make
          changes to the signed addendum that are necessary to reflect the
          arbiter's ruling and submit the revised signed addendum to Manager
          within 10 days after receipt of the arbiter's ruling. If the arbiter
          rules in favor of Sprint PCS, then Manager will execute the signed
          addendum as proffered to Manager within 10 days after Manager's
          receipt of the arbiter's ruling.

               The parties acknowledge that Sprint PCS can disclose to Manager
          who the 3M-pops Manager is that gave rise to the proposed addendum
          only if the 3M-pops Manager agrees to the disclosure.

     9. REVISED BUILDOUT PLAN [ADDM VII,SS.1]. Section 2.1 is supplemented with
the following language:

          (a) REVISED EXHIBITS. Exhibit 2.1 attached to Addendum VII supersedes
     and replaces Exhibit 2.1 attached to Addendum V. Exhibit 2.1 includes:

               (i)  Buildout Plan Map which distinguishes between the Minimum
                    Launch Footprint (as defined below) and Full Buildout
                    Coverage;

               (ii) Buildout Plan Table which distinguishes between the Minimum
                    Launch Footprint (as defined below) and the Full Buildout
                    Coverage and sets forth the Contractual Launch Date and Full
                    Buildout Date for each A Market and B Market; and

                                       14

               (iii) Buildout Plan Description.

          (b) PENALTY, HARD LAUNCH

          Each penalty described in this subsection will begin accruing at 12:01
     am (Kansas City time) on the date six calendar days after the Contractual
     Launch Date set forth in Exhibit 2.1 for that respective market (each a
     "PENALTY DATE").

          The A Markets Penalty Amount equals the amount set forth on the
     following Penalty Table opposite the appropriate range of number of days
     from and including the Contractual Launch Date to and including the date of
     the latest A Market to achieve Hard Launch.

          The B Markets Penalty Amount equals the amounts set forth on the
     following Penalty Table opposite the appropriate range of number of days
     from and including the Full Buildout Date to and including the date of each
     B Market to achieve Hard Launch. The B Markets Penalty Amount is the sum of
     each individual B Market that launches past the respective Contractual
     Launch Date; each individual B Market has a separate penalty amount.

                            HARD LAUNCH PENALTY TABLE

------------------------------------ ------------------------------------ -----------------------------------
          Penalty Period                  A Markets Penalty Amount            B Markets Penalty Amounts
------------------------------------ ------------------------------------ -----------------------------------

6-60 days past the Contractual       3% of Available EBV                  1% of Available EBV multiplied by
Launch Date                                                               the Proration Factor for each B
                                                                          market
------------------------------------ ------------------------------------ -----------------------------------
61-90 days past the Contractual      5% of Available EBV                  1.5% of Available EBV multiplied
Launch Date                                                               by the Proration Factor for each
                                                                          B market
------------------------------------ ------------------------------------ -----------------------------------
91-120 days past the Contractual     6% of Available EBV                  2% of Available EBV multiplied by
Launch Date                                                               the Proration Factor for each B
                                                                          market
------------------------------------ ------------------------------------ -----------------------------------
121-150 days past the Contractual    9% of Available EBV                  3% of Available EBV multiplied by
Launch Date                                                               the Proration Factor for each B
                                                                          market
------------------------------------ ------------------------------------ -----------------------------------
151-180 days past the Contractual    12% of Available EBV                 4% of Available EBV multiplied by
Launch Date                                                               the Proration Factor for each B
                                                                          market
------------------------------------ ------------------------------------ -----------------------------------

          (c) PENALTY, FULL BUILDOUT.

          Each penalty described in this subsection will begin accruing at 12:01
     am (Kansas City time) on the date six calendar days after the Full Buildout
     Date set forth in Exhibit 2.1 for that respective market (each also a
     "PENALTY DATE").

          The A Markets Penalty Amount equals the amount set forth on the
     following Penalty Table opposite the appropriate range of number of days
     from

                                       15

     and including the Full Buildout Date to and including the date of the
     latest A Market to achieve Full Buildout Coverage.

          The B Markets Penalty Amount equals the amounts set forth on the
     following Penalty Table opposite the appropriate range of number of days
     from and including the Full Buildout Date to and including the date of each
     B Market to achieve Full Buildout Coverage. The B Markets Penalty Amount is
     the sum of each individual B Market in which Full Buildout Coverage occurs
     past the respective Full Buildout Date; each individual B Market has a
     separate penalty amount.

                           FULL BUILDOUT PENALTY TABLE

------------------------------------ ------------------------------------ -----------------------------------
          Penalty Period                  A Markets Penalty Amount            B Markets Penalty Amounts
------------------------------------ ------------------------------------ -----------------------------------

6-60 days past the Contractual       1.5% of Available EBV                .5% of Available EBV multiplied
Launch Date                                                               by the Proration Factor for each
                                                                          B market
------------------------------------ ------------------------------------ -----------------------------------
61-90 days past the Contractual      2.5% of Available EBV                .75% of Available EBV multiplied
Launch Date                                                               by the Proration Factor for each
                                                                          B market
------------------------------------ ------------------------------------ -----------------------------------
91-120 days past the Contractual     3% of Available EBV                  1% of Available EBV multiplied by
Launch Date                                                               the Proration Factor for each B
                                                                          market
------------------------------------ ------------------------------------ -----------------------------------
121-150 days past the Contractual    4.5% of Available EBV                1.5% of Available EBV multiplied
Launch Date                                                               by the Proration Factor for each
                                                                          B market
------------------------------------ ------------------------------------ -----------------------------------
151-180 days past the Contractual    6% of Available EBV                  2% of Available EBV multiplied by
Launch Date                                                               the Proration Factor for each B
                                                                          market
------------------------------------ ------------------------------------ -----------------------------------

          (d) PAYMENT OF PENALTY AMOUNTS.

              (i)    Manager will pay the aggregate penalty amounts on or before
                     the date five business days after the date the last A
                     Market or B Market achieves Full Buildout Coverage (the
                     "ASSESSMENT DATE").

              (ii)   If the Assessment Date occurs prior to both March 31, 2001
                     and the closing of a Change of Control Transaction, the
                     Assessment Date will be extended to the earlier of (a) the
                     date that a Change of Control Transaction closes or (b)
                     five business days after the Entire Business Value of
                     Manager, as determined in accordance with the Management
                     Agreement, is determined (which earlier date is the
                     "PAYMENT DATE").

                                       16

              (iii)  Manager will also owe Additional Interest on the individual
                     penalty amounts, which Additional Interest is payable in
                     the same manner as the penalty amounts (e.g., timing and
                     form of payment).

              (iv)   Manager will pay the aggregate penalty amounts in cash or
                     in Manager Shares, at Sprint PCS's election. Payments of
                     cash will be made via wire transfer instruction provided to
                     Manager by Sprint PCS.

              (v)    If the Assessment Date has not occurred as of the date of
                     the closing of a Change of Control Transaction, Manager
                     will place Manager Shares in escrow for the benefit of
                     Sprint PCS in an amount sufficient to cover the penalty
                     amounts.

          (e) WAIVER OF CURE RIGHTS.

              (i)    If Manager does not achieve Hard Launch or Full Buildout
                     Coverage, as applicable, in a market by midnight on the
                     90-Day Threshold, Manager will be in breach of a material
                     term of the Management Agreement. Accordingly, Sprint PCS
                     may declare an Event of Termination under the Management
                     Agreement, and Manager waives any right to a cure period
                     set forth in section 11.3.3.

              (ii)   If Sprint PCS does not declare in writing an Event of
                     Termination within ten business days after the 90-Day
                     Threshold, Sprint PCS waives its right to declare an Event
                     of Termination based on Manager's failure to meet a
                     Contractual Launch Date or Full Buildout Date, as
                     applicable, until the 180-Day Threshold. If Manager does
                     not achieve Hard Launch or Full Buildout Coverage, as
                     applicable, in a market by the 180-Day Threshold, Manager
                     will be in breach of a material term of the Management
                     Agreement. Accordingly, Sprint PCS may declare an Event of
                     Termination under the Management Agreement, and Manager
                     waives any right to a cure period set forth in section
                     11.3.3.

          (f) DEFINITIONS.

                                       17

          "90-DAY THRESHOLD" means the date 90 calendar days after the
     Contractual Launch Date or the Full Buildout Date, as applicable, for a
     respective A Market or B Market.

          "180-DAY THRESHOLD" means the date 180 calendar days after the
     Contractual Launch Date or the Full Buildout Date, as applicable, for a
     respective A Market or B Market.

          "A MARKETS" means Springfield (BTA #428), Joplin (BTA #220) and Cape
     Girardeau (BTA #66).

          "ADDITIONAL INTEREST" means the sum of the products of (a) each
     individual penalty amount, multiplied by (b) 14% per annum, multiplied by
     (c) the number of calendar days from the respective Penalty Date to the
     Payment Date, inclusive, divided by 365.

          "AVAILABLE EBV" means either:

              (i)    if no Change of Control Transaction has closed by March 31,
                     2001, 80% of Entire Business Value of Manager, as
                     determined in accordance with the Management Agreement,
                     except that the Manager will pay all of the costs of
                     determining Entire Business Value, which includes, but is
                     not limited to, the cost of all parties' appraisers
                     (Available EBV will be determined as of a date, no later
                     than April 12, 2001 and completed by May 30, 2001); or

              (ii)   if a Change of Control Transaction closes on or before
                     March 31, 2001, 80% of the product of (a) 13,500,000
                     multiplied by (b) the closing share price of publicly
                     issued equity of Alamosa Holdings, Inc. on the date of the
                     closing of the Change of Control Transaction.

          "B MARKETS" means Rolla (BTA #383), Poplar Bluff (BTA #355),
     Carbondale (BTA #67), Quincy/Hannibal (BTA #367), and Kirksville (BTA
     #230).

          "CHANGE OF CONTROL TRANSACTION" means a transaction that results in a
     Change of Control, as defined in the Management Agreement, of Manager.

          "CHIEF FINANCIAL OFFICER OF SPRINT PCS", "SPRINT PCS CHIEF FINANCIAL
     OFFICER" and other references to the Chief Financial Officer of Sprint PCS
     mean the Senior Vice President - Finance of Sprint Corporation designated
     to serve as

                                       18

     the chief financial officer of Sprint PCS or if none, the individual
     serving in that capacity.

          "CONTRACTUAL LAUNCH DATE" means the date set forth on the Buildout
     Plan Table portion of Exhibit 2.1.

          "FULL BUILDOUT COVERAGE" means network coverage of the geographic area
     described in Exhibit 2.1 in which commercial Sprint PCS service is offered,
     consistent with Sprint PCS standards and Program Requirements.

          "FULL BUILDOUT DATE" means the date set forth on the Buildout Plan
     Table portion of Exhibit 2.1.

          "HARD LAUNCH" means, for each market, that (i) Manager has met all
     Sprint PCS standards and Program Requirements for operational and network
     readiness (which includes but is not limited to completion of the OPAC
     checklist, OPAC process, test plans, coverage definition, assessment of
     site readiness, network optimization, operational and systems readiness
     assessment by the Sprint PCS Operational Readiness Team); (ii) Manager has
     handset inventory, training completed and point-of-sale materials for
     Sprint PCS, Sprint PCS National Third Party and local third party retail
     outlets in the Minimum Launch Footprint to meet reasonably expected
     subscriber demand; (iii) Manager markets and sells Sprint PCS Products and
     Services through mass advertising (i.e., print, radio and television
     media); (iv) the Minimum Launch Footprint is complete; and (v) Manager has
     met all Sprint PCS soft launch criteria which means (a) systems are up and
     functioning, stores are operational (and open), and activations can occur,
     (b) soft launch typically occurs one week after network ready date, and one
     week before Hard Launch, (c) activations of friendly accounts may occur,
     but any store traffic is strictly unsolicited; (d) launch-related hiring
     and training should be completed prior to soft launch.

          "MANAGER SHARES" are defined as the number of shares calculated by
     multiplying (i) the percentage of Manager's told equity equivalent to the
     penalty amount (i.e., the percentage calculated by dividing the dollar
     amount of the penalty by the dollar amount of Manager's total equity) by
     (ii) either (a) the membership interests of Manager, of no Change of
     Control Transaction has closed by March 31, 2001, or (b) the number of
     shares granted to Manager's members as consideration for their interests in
     Manager as a result of such change of control, if a Change of Control
     Transaction closes on or before March 31, 2001.

          "MINIMUM LAUNCH FOOTPRINT" means the geographic area described in
     Exhibit 2.1 in which commercial Sprint PCS service is offered, consistent
     with Sprint PCS standards and Program Requirements.

                                       19

          "PRORATION FACTOR" means a number between 0 and 1 that is calculated
     by dividing the covered pops of an individual B Market by the total covered
     pops of all B Markets, and then multiplying this amount by the Priority
     Factor, Proration Factors are set forth in Exhibit 2.1.

          "PRIORITY FACTOR" is a number between 0 and 2. Priority Factors are
     set forth in Exhibit 2.1.

     10. EXCLUSIVITY OF SERVICE AREA [ADDM VIII,SS.5]. In section 2.3 and the
Schedule of Definitions, the phrase "wireless mobility communications network"
is replaced by the phrase "Wireless Mobility Communications Network".

     11. COVERAGE ENHANCEMENT [ADDM XI,SS.11]. Section 2.5 is replaced by the
following language:

          2.5 MANAGER'S RIGHT OF FIRST REFUSAL FOR NEW COVERAGE BUILD-OUT.
     Sprint PCS grants to Manager the right of first refusal to build-out New
     Coverage. Sprint PCS will give to Manager a written notice of a New
     Coverage within the Service Area that Sprint PCS decides should be
     built-out. Manager must communicate to Sprint PCS within 90 days after
     receipt of the notice whether it will build-out the New Coverage.

          If Manager decides to build-out the New Coverage then Manager and
     Sprint PCS will diligently negotiate and execute an amendment to the
     Build-out Plan and proceed as set forth in sections 2.1 and 2.2. The
     amended Build-out Plan will contain critical milestones that provide
     Manager a commercially reasonable period in which to implement coverage in
     the New Coverage. In determining what constitutes a "commercially
     reasonable period" as used in this paragraph, the parties will consider
     several factors, including local zoning processes and other legal
     requirements, weather conditions, equipment delivery schedules, the need to
     arrange additional financing, and other construction already in progress by
     Manager. Manager will construct and operate the network in the New Coverage
     in accordance with the terms of this agreement.

          If Manager (i) does not communicate to Sprint PCS within such 90-day
     period that it will build out the New Coverage, (ii) fails to agree with
     Sprint PCS upon the amended Build-Out Plan, or (iii) fails to build-out the
     New Coverage in accordance with the amended Build-Out Plan, then Sprint PCS
     shall be entitled to (A) build-out the New Coverage itself or allow a
     Sprint PCS Related Party to do so, or (B) offer third parties (including
     Other Managers) the right to build-out the New Coverage on terms and
     conditions that are no more favorable than those that were offered to and
     rejected by Manager. If (x) neither Sprint PCS, a Sprint PCS Related Party,
     nor any third party (with respect to such third party, on terms and
     conditions that are no more favorable than those that were offered to and
     rejected by Manager) commits to build-out such New Coverage within 150 days
     of the original communication to Manager with respect thereto, or (y) more
     favorable

                                       20

     terms and conditions than those that were offered to and rejected by
     Manager are offered to any third party to build-out the New Coverage, then
     any build-out of such New Coverage shall again be subject to Manager's
     right of first refusal (and, if applicable, on such more favorable terms
     and conditions).

          Sprint PCS has the right, in a New Coverage that it constructs or that
     is constructed by a third party, to manage the network, allow a Sprint PCS
     Related Party to manage the network, or hire a manager to operate the
     network in the New Coverage. Any New Coverage that Sprint PCS or a third
     party builds out is deemed removed from the Service Area and the Service
     Area Exhibit is deemed amended to reflect the change in the Service Area.
     If Manager does not exercise its right of first refusal with respect to a
     New Coverage, Manager's right of first refusal does not terminate with
     respect to the remainder of the Service Area.

     12. LONG DISTANCE PRICING [ADDM XI,SS.12]. Section 3.4 of the Management
Agreement is amended and restated in its entirety to read as follows:

          3.4 IXC SERVICES.

          3.4.1. CUSTOMER LONG DISTANCE. Sprint PCS and Manager will from time
     to time mutually define local calling areas in the Service Areas of Manager
     that Sprint PCS and Manager will use to determine when a customer will be
     billed for a "long distance call" under the applicable rate plan of the
     Customer. The parties acknowledge that these local calling areas (i) may
     change in geographic scope in response to competitive pressures or
     perceived market opportunities, and (ii) may not be able to be changed
     because of regulatory, industry, or system limitations. The parties will
     not use local calling areas to determine "long distance telephony services"
     under section 3.4.2. If the parties cannot agree on the extent of the local
     calling area they will resolve the matter through the dispute resolution
     process in section 14.

          3.4.2. LONG DISTANCE SERVICES

          (a) Required purchase. Manager must obtain (i) long-distance telephony
     services through Sprint PCS or its Related Parties to provide long-distance
     service to users of the Sprint PCS Network and (ii) telephony services
     through Sprint PCS or its Related Parties to connect the Service Area
     Network with the national platforms that Sprint PCS uses to provide
     services to Manager under this agreement or the Services Agreement. The
     term "long distance telephony service" means any inter-LATA call for
     purposes of this section 3.4.2 as it relates to long-distance telephony
     services provided to users of the Sprint PCS Network.

                                       21

          (b) Pricing and procedure. Sprint PCS will purchase for Sprint PCS,
     Manager and Other Managers long-distance telephony services used in the
     Sprint PCS Network from Sprint Communications Company L.P. or its Related
     Parties ("SCCLP"). Sprint PCS will purchase these long-distance telephony
     services at a price and terms at least as favorable to Sprint PCS, Manager
     and the Other Managers (considering Sprint PCS, Manager and the Other
     Managers as a single purchaser) as the best prices and terms SCCLP offers
     to any wholesale customer of SCCLP in similar situations when taking into
     account all relevant factors (e.g., volume, peak/off-peak usage, length of
     commitment). Sprint PCS will pay the invoice from SCCLP, except for items
     that SCCLP directly bills under section 3.4.2(c). Sprint PCS will bill to
     Manager as an activity settled separately under the Services Agreement the
     portion of the fees billed to Sprint PCS that relate to Manager's
     operations and the activity of all Customers and Reseller Customers in the
     Service Area, except for items SCCLP directly bills under section 3.4.2(c).

          If Sprint Corporation no longer has its "PCS" tracking stock, Sprint
     PCS will include the volume of long-distance telephony services of Manager
     and Other Managers with the volume of Sprint PCS when negotiating the
     Sprint PCS rate with the long distance division of Sprint Corporation
     (currently SCCLP). The long distance division will continue to provide
     long-distance telephony services to Sprint PCS for a price and upon terms
     based on the same relevant factors described in the preceding paragraph and
     in the same manner that it has under the present tracking stock policy.

          (c) Call routing. Manager, acting as a single purchaser, may purchase
     private line capacity (or other forms of capacity) from SCCLP for
     inter-LATA calls to the extent that this capacity can be obtained on terms
     more favorable to Manager (acting as a single purchaser). SCCLP will sell
     that capacity to Manager at the best price that SCCLP offers to third
     parties in similar situations when taking into account all relevant
     factors. SCCLP will directly bill Manager for any purchase of capacity
     under this section 3.4.2(c). The terms of section 1.3 do not apply to
     purchases of capacity in this section 3.4.2(c).

          (d) Pre-existing agreement. If before the date Addendum X to this
     agreement is signed, Manager is bound by an agreement for long distance
     services or an agreement for private line service and the agreement was not
     made in anticipation of this agreement or Addendum X, then the requirements
     of this section 3.4.2 do not apply during the term of the other agreement.
     If the other agreement terminates for any reason, then the requirements of
     this section 3.4.2 do apply from and after the termination.

                                       22

          (e) Resale. Manager may not resell the long-distance telephony
     services acquired under this section 3.4.2. For purposes of clarification,
     resale under this section 3.4.2(e) includes Manager selling minutes to
     carriers for ultimate resale to end users under a brand other than "Sprint"
     or selling minutes to end users under a brand other than "Sprint". Manager
     may engage in the following activities (i.e., these activities are not
     treated as resale of long-distance telephony services):

               (1) the transport of long-distance calls for Customers under
          section 3.4.2(a),

               (2) the transport of long-distance calls for resellers under
          section 3.5, and

               (3) the transport of long-distance calls for roaming under
          section 4.3.

     13. VOLUNTARY RESALE OF PRODUCTS AND SERVICES [NEW]. Schedule 1 attached to
this Addendum replaces and supersedes the heading, preamble, general terms and
all attachments to the Program Requirement 3.5.2 dated August 13, 2002, which is
labeled "Exhibit 3.5.2 Program Requirement for Voluntary Resale of Products and
Services By Voluntary Resellers Under the Private Label Solutions Program".
Program Requirement 3.5.2 - VMU which is labeled "Exhibit 3.5.2 - VMU Program
Requirements for Voluntary Resale of Products and Services by Virgin Mobile USA,
LLC (version 7/07/02)" continues in effect, as amended from time to time, except
its label is amended to read "Program Requirement 3.5.2 - VMU Program
Requirements for Resale of Products and Services By Virgin Mobile USA, LLC
(version 7/07/02)".

     Section 3.5.2 to the Management Agreement is amended and restated in its
entirety to read as follows:

          3.5.2 RESALE OF PRODUCTS AND SERVICES. Sprint PCS may choose to offer
     a resale product under which resellers will resell Sprint PCS Products and
     Services under brand names other than the Brands, except Sprint PCS may
     permit the resellers to use the Brands for limited purposes related to the
     resale of Sprint PCS Products and Services (e.g., to notify people that the
     handsets of the resellers will operate on the Sprint PCS Network). The
     resellers may also provide their own support services (e.g., customer care
     and billing) or may purchase the support services from Sprint PCS. Other
     terms of the resale program are governed by Program Requirement 3.5.2.

          Manager will continue to participate in any resale arrangements that,
     before April 1, 2004, Manager had opted into under the Program Requirement
     3.5.2, effective as of January 1, 2004, and before the amendment to the
     Program Requirement 3.5.2 by this Addendum, except that those resale
     arrangements will be governed by Program Requirement 3.5.2 as amended by
     this Addendum.

                                       23

     Compensation for Manager's participation in these resale arrangements will
     be paid to Manager in accordance with section 10.4.1.1(a)(i) of this
     agreement, unless compensation was otherwise negotiated between Manager and
     Sprint PCS (e.g., Virgin Mobile USA).

          Manager will participate in all resale arrangements entered into,
     renewed or extended during the Required Resale Participation Period
     (regardless of whether Manager was participating in the resale arrangement
     on or before April 1, 2004) in all cases with compensation being paid to
     Manager as set forth in section 10.4.1.1(a)(ii) or (iii), whichever is
     applicable. Additionally, Manager will continue to support resale
     arrangements entered into, renewed or extended during the Required Resale
     Participation Period to the end of their respective terms. Sprint PCS
     agrees that the compensation, payment and other terms and conditions under
     each resale arrangement entered into, renewed or extended during the
     Required Resale Participation Period will be the same as the compensation,
     payment and other terms and conditions applicable to Sprint PCS and each
     Other Manager with respect to such reseller.

          The resale arrangement between Sprint PCS and Virgin Mobile USA will
     be treated as a new resale arrangement and subject to the compensation set
     forth in section 10.4.1.1(a)(ii) or (iii), whichever is applicable, if
     continued after the expiration of the initial term of the arrangement.

          Except as required under the regulations and rules concerning
     mandatory resale, Manager may not sell Sprint PCS Products and Services for
     resale unless Sprint PCS consents to such sales in advance in writing.

     14. INTRA-LATA CALLS AND BACKHAUL SERVICES [ADDM XI,SS.14]. Section 3.7 is
amended and restated in its entirety to read as follows:

          3.7 INTRA-LATA CALLS AND BACKHAUL SERVICES. Manager, acting as a
     single purchaser, may purchase capacity (including private line capacity)
     from SCCLP for intra-LATA calls and backhaul services. SCCLP will sell that
     capacity to Manager at the best price that SCCLP offers to third parties in
     similar situations when taking into account all relevant factors.

          Manager will offer to Sprint PCS or one of its Related Parties the
     right to make to Manager the last offer to provide capacity for intra-LATA
     calls and backhaul services for the Service Area Network if:

               (i) Manager decides to use third parties for intra-LATA calls and
          backhaul services rather than self-provisioning the capacity or
          purchasing the capacity from Related Parties of Manager, and

                                       24

               (ii) Sprint PCS or one of its Related Parties has provided
          evidence to Manager that SCCLP or one of its Related Parties has
          facilities to provide the capacity requested.

          Manager will deliver to Sprint PCS the terms under which the third
     party will provide the capacity. Sprint PCS or one of its Related Parties
     will have a reasonable time to respond to Manager's request for last offer
     to provide pricing for capacity for intra-LATA calls and backhaul, which
     will be no greater than 5 Business Days after receipt of the request for
     the pricing and the third party's terms from Manager. Manager will acquire
     capacity for intra-LATA calls and backhaul services from Sprint PCS or one
     of its Related Parties if Sprint PCS or one of its Related Parties offers
     Manager pricing and other terms for intra-LATA calls and backhaul services
     for the Service Area Network that matches the terms, including pricing, or
     is better than the terms and lower than the pricing offered by the third
     party. For purposes of this section 3.7, the term "backhaul" means the
     provision of services from a cell site of Manager to the corresponding
     switch associated with the cell site.

          If Manager has an agreement for these services in effect as of the
     date Addendum X is signed and the agreement was not made in anticipation of
     this agreement or Addendum X, then the requirements of this section 3.7 do
     not apply during the term of the other agreement. If the other agreement
     terminates for any reason, then the requirements of this section 3.7 do
     apply from and after the termination.

     15. SPRINT PCS ROAMING AND INTER SERVICE AREA PROGRAM REQUIREMENTS [ADDM
XI,SS.14]. The second paragraph of section 4.3 is amended to read as follows:

          Section 10.4.1 sets forth the settlement process that distributes
     between the members making up the Sprint PCS Network (i.e., Sprint PCS,
     Manager and all Other Managers) a fee for use of the Sprint PCS Network and
     the Service Area Network (the "INTER SERVICE AREA FEE").

     16. CHANGES TO PROGRAM REQUIREMENTS [ADDM XI, SS.15].

     (a) The first sentence of section 9.2(e) is amended to read as follows:

          Manager must implement any changes in the Program Requirements within
     a commercially reasonable period of time unless otherwise consented to by
     Sprint PCS, subject to the terms of section 9.3.

     (b) Section 9.3 is amended to read as follows:

                                       25

          9.3 MANAGER'S RIGHTS REGARDING CHANGES TO PROGRAM REQUIREMENTS.

          9.3.1 PARAMETERS FOR REQUIRED PROGRAM REQUIREMENT IMPLEMENTATION.
     Manager has the right to decline to implement any new Program Requirement
     or any change to any existing Program Requirement (a "PROGRAM REQUIREMENT
     CHANGE") if Manager determines that any such Program Requirement Change,
     other than a change involving Sprint PCS National or Regional Distribution
     Program Requirements, will have an adverse impact on Manager that meets or
     exceeds the parameters set forth below in subparagraphs (a) through (d).
     For purposes of this section 9.3 a Program Requirement Change will include
     any change in any "guidelines," "policies," "standards" or "specifications"
     proposed by Sprint PCS under this agreement, the Services Agreement or
     either of the Trademark License Agreements, and the exercise by Sprint PCS
     of any unilateral right under those agreements, except changes to the
     Trademark Usage Guidelines, the Marketing Communications Guidelines, or the
     definition of Sprint PCS Products and Services (other than the pricing of
     those products and services, i.e. pricing is a Program Requirement Change).
     If Manager determines to decline to implement any Program Requirement
     Change, other than a change involving a national distribution program, then
     Manager must, within 10 days after Sprint PCS provides Manager with notice
     of the Program Requirement Change, give Sprint PCS (i) a written assessment
     of the impact of the Program Requirement Change on Manager using the
     parameters set forth in subparagraphs (a) through (d) below, and (ii)
     written notice that Manager declines to implement the Program Requirement
     Change. Manager may, without being deemed in default of this agreement,
     decline to implement any Program Requirement Change that will:

          (a) individually cause the combined peak negative cash flow of the
     Alamosa Managers to be an amount greater than 3% of Alamosa Holdings,
     Inc.'s Enterprise Value; or

          (b) when combined with the original assessments made in accordance
     with section 9.3.1(a) of all other Program Requirement Changes that Sprint
     PCS announced and the Alamosa Managers agreed to implement, both within the
     preceding 12 calendar months, cause the combined cumulative peak negative
     cash flow of the Alamosa Managers to be an amount greater than 5% of
     Alamosa Holdings, Inc.'s Enterprise Value; or

          (c) individually cause a decrease in the forecasted 5-year discounted
     cash flow of the Alamosa Managers (at the Alamosa Managers'

                                       26

     appropriate discount rate) of more than 3% on a combined net present value
     basis; or

          (d) when combined with the original assessments made in accordance
     with section 9.3.1(c) of all other Program Requirement Changes that Sprint
     PCS announced and Manager agreed to implement, both within the preceding 12
     calendar months, cause a decrease in the forecasted 5-year discounted cash
     flow of the Alamosa Managers (at the Alamosa Managers' appropriate discount
     rate) of more than 5% on a combined net present value basis.

          Manager may discuss with Sprint PCS in the manner described in section
     9.7(c) any change that does not meet or exceed the parameters set forth in
     this section 9.3.1, except any change involving Sprint PCS National or
     Regional Distribution Program Requirements.

          9.3.2. DISAGREEMENT WITH ASSUMPTIONS OR METHODOLOGY. Sprint PCS must
     notify Manager of any disagreement with Manager's assumptions or
     methodology within 10 days after its receipt of Manager's assessment under
     section 9.3.1. Manager will not be required to implement the Program
     Requirement Change if Sprint PCS fails to notify Manager of any
     disagreement within such 10-day period unless Sprint PCS elects to require
     such compliance under section 9.3.3 below. Either party may escalate the
     review of the assumptions and methodology underlying the assessment to the
     parties' respective Chief Financial Officers if Sprint PCS disagrees with
     Manager's assessment and the parties are unable to agree on the assumptions
     and methodology within 20 days after Sprint PCS notifies Manager of the
     disagreement.

          The parties will mutually select an independent investment banker in
     the wireless telecommunications industry ("INVESTMENT BANKER") to determine
     whether the implementation of the Program Requirement Change will exceed
     one of the parameters if Sprint PCS and Manager are unable to agree on the
     assumptions and methodology to perform the calculations within 30 days
     after Sprint PCS notifies Manager of the disagreement. The American
     Arbitration Association will select the Investment Banker if the parties do
     not select the Investment Banker within 50 days after Sprint PCS notifies
     Manager of the disagreement. Sprint PCS and Manager will cooperate fully
     and provide all information reasonably requested by the Investment Banker;
     except that any Investment Banker selected by the American Arbitration
     Association, and its investment bank, must have no current engagement with
     either Manager or Sprint PCS and must not have been engaged by either such
     party within the 12 calendar months preceding the engagement under this
     section. A business relationship between Manager or Sprint PCS and a

                                       27

     commercial bank or other organization affiliated with an investment bank
     will not disqualify the investment bank. Sprint PCS and Manager will
     cooperate fully and provide all information reasonably requested by the
     Investment Banker. The Investment Banker will have 20 days from the date of
     engagement to make its decision.

          Manager will pay any Investment Banker's fees and implement the
     Program Requirement Change if the parties agree or the Investment Banker
     determines that implementing the Program Requirement Change will not exceed
     any of the parameters described in section 9.3.1.

          9.3.3 ONE OR MORE PARAMETERS EXCEEDED. Sprint PCS will pay the
     Investment Banker's fees if the parties agree or the Investment Banker
     determines that implementing the Program Requirement Change will exceed at
     least one of the parameters described in section 9.3.1. Sprint PCS may
     require Manager to implement the Program Requirement Change whether the
     parties agree or disagree or the Investment Banker determines that
     implementing the Program Requirement Change will exceed at least one of the
     parameters described in section 9.3.1, if Sprint PCS agrees to compensate
     Manager the amount necessary to prevent Manager from exceeding the
     parameters set forth in section 9.3.1.

          9.3.4 CHANGES WITH RESPECT TO PRICING PLANS AND ROAMING PROGRAM
     REQUIREMENTS. Manager will implement a Program Requirement Change in the
     manner requested by Sprint PCS that

               (i) relates to a pricing plan under section 4.4 or roaming
          program and

               (ii) Sprint PCS reasonably determines must be implemented on an
          immediate or expedited basis to respond to competitive market forces,

     notwithstanding Manager's determination that implementation of the Program
     Requirement Change will have an adverse impact on Manager that meets or
     exceeds the parameters set forth in section 9.3.1. Manager's implementation
     of the Program Requirement Change will not adversely affect Manager's right
     to object to the implementation of the Program Requirement Change. Manager
     will continue to comply with the Program Requirement Change if the parties
     agree or the Investment Banker determines that implementing the Program
     Requirement Change will not exceed any of the parameters described in
     section 9.3.1. If Sprint PCS does not successfully challenge Manager's
     assessment of the adverse impact of the Program Requirement Change on
     Manager in accordance with section 9.3.2, Sprint PCS can require Manager
     either to (i) continue

                                       28

     to comply with the Program Requirement Change and compensate Manager in the
     amount necessary to reimburse Manager for any reasonable costs, expenses or
     losses that Manager incurred as a result of its implementation of the
     Program Requirement Change net of any benefit received by Manager, to the
     extent the costs, expenses and losses net of the benefits exceed the
     parameters set forth in section 9.3.1 or (ii) terminate its continued
     compliance with the Program Requirement Change and compensate Manager in
     the amount necessary to reimburse Manager for any reasonable costs,
     expenses or losses that Manager incurred as a result of its implementation
     of the Program Requirement Change net of any benefit received by Manager.
     Manager cannot terminate its continued compliance if Sprint PCS elects to
     require Manager's continued compliance with the Program Requirement Change
     under section 9.3.3 above.

     (c) A new section 9.7 is added to the Management Agreement:

          9.7 MANDATORY REQUIREMENTS; UNILATERAL CHANGES.

          (a) Any "guidelines," "policies," "standards" or "specifications"
     previously issued by Sprint PCS are mandatory requirements with which
     Manager, the Other Managers and Sprint PCS must comply (subject to Sprint
     PCS' right to grant waivers as provided in Article 9 of this agreement),
     unless otherwise identified by Sprint PCS within 120 days after the date of
     Addendum X.

          (b) Any changes to or new "guidelines," "policies," "standards" or
     "specifications" proposed by Sprint PCS under this agreement, the Services
     Agreement or either of the Trademark License Agreements are mandatory
     requirements with which Manager, the Other Managers and Sprint PCS must
     comply (subject to Sprint PCS' right to grant waivers as provided in
     Article 9 of this agreement). Sprint PCS will when issuing them reference
     the applicable section of this agreement, the Services Agreement, the
     Trademark License Agreements and if applicable, the Program Requirement to
     which they relate.

          (c) Sprint PCS and Manager will in good faith attempt to mutually
     agree on how to mitigate the adverse economic impact on Manager of the
     exercise of any unilateral right of Sprint PCS under this agreement, the
     Services Agreement and either Trademark License Agreement to the extent
     Manager believes such change will have a significant adverse economic
     impact on Manager's operations, except with respect to changes involving
     Sprint PCS National or Regional Distribution Program Requirements. For
     purposes of clarification, the parties intend the preceding sentence to
     obligate them to a robust discussion and open

                                       29

     dialogue but understand the discussion and dialogue may not lead to any
     particular solution of the issues raised by Manager or Sprint PCS. By way
     of illustration, under the second preceding sentence if Manager believed
     that the exercise of the unilateral right to change the Trademark Usage
     Guidelines or the designation of Sprint PCS Products and Services had an
     adverse economic impact on Manager, then Manager and Sprint PCS will in
     good faith attempt to mutually agree on how to mitigate the adverse impact
     on Manager.

     (d) A new section 9.8 is added to the Management Agreement.

          9.8 BREACH FOR FAILURE TO IMPLEMENT PROGRAM REQUIREMENT.

          Manager will be in material breach of a material term and Sprint PCS
     may exercise its rights under section 11 if Manager declines to implement a
     Program Requirement when required to do so under this agreement.

     17. FEES [ADDM XI,SS.16; REVISED BY THIS ADDENDUM]. (a) Article 10 of the
Management Agreement is amended and restated in its entirety to read as follows:

                                    10. FEES

          10.1 GENERAL. Sprint PCS and Manager will pay to each other the fees
     and apply the credits in the manner described in this section 10. The
     amounts that Sprint PCS is paid or retains are for all obligations of
     Manager under this agreement. Many of the definitions for the fees in
     section 10.2 are found in section 10.3.

          10.2 FEES.

               10.2.1 FEE BASED ON BILLED REVENUE. Sprint PCS will pay to
     Manager the Fee Based on Billed Revenue as determined in this section
     10.2.1.

               "BILLED REVENUE" is all customer account activity (e.g., all
     activity billed, attributed or otherwise reflected in the customer account
     but not including Customer Credits) during the calendar month for which the
     fees and payments are being calculated (the "BILLED MONTH") for Sprint PCS
     Products and Services related to all Customer accounts within a customer
     service area ("CSA") assigned to the Service Area, except (i) Outbound
     Roaming Fees, (ii) amounts handled separately in this section 10 (including
     the amounts in sections 10.2.3 through 10.2.6, 10.4 and 10.8), (iii)
     amounts collected from Customers and paid to governmental or regulatory
     authorities (e.g., Customer Taxes and USF Charges), and (iv)

                                       30

     other amounts identified in this agreement as not included in Billed
     Revenue (these Customer accounts being "MANAGER ACCOUNTS").

               Billed Revenue does not include new activity billed to the
     Customer solely to recover costs incurred by Sprint PCS, Manager or both
     related solely to such new activity. Manager and Sprint PCS will share the
     revenues from this billing in proportion to the costs they incur.

               For purposes of clarification, the parties have in place
     procedures to assign Customers to CSAs and expect those procedures to
     remain in place after the Effective Date.

               If Sprint PCS or Manager develops products or services that
     bundle Sprint PCS Products and Services with other products or services
     (e.g., local service or broadband wireline service), then Sprint PCS and
     Manager will use commercially reasonable efforts to agree on the proper
     allocation of revenue, bad debt expenses, credits and promotions for the
     bundled products and services.

               Sprint PCS will reasonably determine the amount of credits
     applied to Manager Accounts during the Billed Month ("CUSTOMER CREDITS").

               "NET BILLED REVENUE" for a Billed Month is the amount of the
     Billed Revenue less the Customer Credits.

               The "FEE BASED ON BILLED REVENUE" for a Billed Month is equal to
     92% of (a) Net Billed Revenue, less (b) the Allocated Write-offs for Net
     Billed Revenue.

               10.2.2 OUTBOUND ROAMING FEE. Sprint PCS will pay to Manager a fee
     equal to the amount of Outbound Roaming Fees that Sprint PCS or its Related
     Parties bills to Manager Accounts, less the Allocated Write-offs for
     Outbound Roaming Fees. For purposes of clarification, Sprint PCS will
     settle separately with Manager the direct cost of providing the capability
     for the Outbound Roaming, including any amounts payable to the carrier that
     handled the roaming call and the clearinghouse operator for Outbound
     Roaming.

               10.2.3 PHASE II E911 SURCHARGES. Sprint PCS will pay to Manager a
     fee equal to a portion of the E911 Phase II Surcharges (attributable to
     incremental costs for Phase II E911, including but not limited to related
     handset costs, routing costs, implementation costs, trunks and testing
     costs, and anticipated write-offs for bad debt) billed during the Billed
     Month to Customers with an NPA-NXX assigned to the Service Area, less the
     Allocated Write-offs for that portion of E911 Phase

                                       31

     II Surcharges in the Billed Month. The portion of the billed amount
     attributed to Manager will be based on Manager's proportional cost (as
     compared to Sprint PCS' proportional cost) to comply with Phase II of the
     E911 requirements. Sprint PCS will determine from time to time the rate
     billed to Customers related to Phase II E911 and the portion payable to
     Manager.

               10.2.4 WIRELESS LOCAL NUMBER PORTABILITY SURCHARGES. Sprint PCS
     will pay to Manager a fee equal to a portion of the Wireless Local Number
     Portability Surcharges ("WLNP SURCHARGES") billed during the Billed Month
     to Customers with an NPA-NXX assigned to the Service Area, less the
     Allocated Write-offs for that portion of the WLNP Surcharges in the Billed
     Month. The portion of the billed amount attributed to Manager will be based
     on Manager's proportional cost (as compared to Sprint PCS' proportional
     cost) to comply with Wireless Local Number Portability requirements. Sprint
     PCS will determine from time to time the rate billed to Customers related
     to WLNP Surcharges and the portion payable to Manager.

               10.2.5 CUSTOMER EQUIPMENT CREDITS. Sprint PCS will apply as a
     credit to any other fees under this section 10.2 owing by Sprint PCS to
     Manager an amount equal to the amount of the Customer Equipment Credits
     less the Allocated Write-offs for Customer Equipment Credits.

               10.2.6 WRITE-OFFS FOR CUSTOMER EQUIPMENT CHARGES. Sprint PCS will
     apply as a credit to any other fees under this section 10.2 owing by Sprint
     PCS to Manager an amount equal to the amount of the Allocated Write-offs
     for Customer Equipment Charges.

          10.3 DEFINITIONS USED IN FEE CALCULATIONS

               10.3.1 WRITE-OFFS. Sprint PCS will determine the amounts written
     off net of deposits applied (the "WRITE-OFFS") in the Sprint PCS billing
     system during the Billed Month relating to Manager Accounts.

               10.3.2 BILLED COMPONENTS. Each of the following amounts is
     referred to as a "BILLED COMPONENT" and collectively they are referred to
     as the "BILLED COMPONENTS".

                    10.3.2.1 Net Billed Revenue. The amount determined as
     described in section 10.2.1.

                    10.3.2.2 Customer Equipment Credits. The reductions of
     amounts billed to Manager Accounts related to the sale of

                                       32

     handsets and handset accessories from Sprint PCS inventory are referred to
     as "CUSTOMER EQUIPMENT CREDITS". This is a negative amount that reduces the
     Amount Billed (Net of Customer Credits).

                    10.3.2.3 100% Affiliate Retained Amounts. The amounts
     referred to as "100% Affiliate Retained Amounts" on Exhibit 10.3, to which
     Manager is entitled to 100% of the amounts that Customers are billed for
     such items.

                    10.3.2.4 100% Sprint PCS Retained Amounts. The amounts
     referred to as "100% Sprint PCS Retained Amounts" on Exhibit 10.3, to which
     Sprint PCS is entitled to 100% of the amounts that Customers are billed for
     such items.

                    10.3.2.5 Customer Equipment Charges. The amounts that Sprint
     PCS bills to Manager Accounts for subscriber equipment and accessories sold
     or leased are referred to as "CUSTOMER EQUIPMENT CHARGES".

                    10.3.2.6 E911 Phase II Surcharges. The amounts that Sprint
     PCS bills to Manager Accounts to recover all costs related to Phase II E911
     functionality are referred to as "E911 PHASE II SURCHARGES".

                    10.3.2.7 USF Charges. The amounts that Sprint PCS bills to
     Manager Accounts relating to Universal Service Funds are referred to as
     "USF CHARGES".

                    10.3.2.8 WLNP Surcharges. The amounts that Sprint PCS bills
     to Manager Accounts to recover costs related to WLNP activities.

               10.3.3 AMOUNT BILLED (NET OF CUSTOMER CREDITS). The "AMOUNT
     BILLED (NET OF CUSTOMER CREDITS)" for a Billed Month is equal to the sum of
     the Billed Components.

               10.3.4 THE ALLOCATED WRITE-OFFS. The "ALLOCATED WRITE-OFFS" for
     all or a portion of a Billed Component in a Billed Month is the Write-offs
     for the Billed Month times the amount of the Billed Component (or portion
     thereof) divided by the Amount Billed (Net of Customer Credits).

          10.4 OTHER FEES AND PAYMENTS. Sprint PCS and Manager will pay to each
     other the fees and payments described below:

               10.4.1 INTER SERVICE AREA FEES AND RESELLER CUSTOMER FEES.

                                       33

                    10.4.1.1 Inter Service Area Fee and Reseller Customer Fee
     Paid. Manager will pay to Sprint PCS an Inter Service Area Fee as set forth
     in this section 10.4.1 for each billed minute or kilobyte of use that a
     Customer with an NPA-NXX assigned to the Service Area uses a portion of the
     Sprint PCS Network other than the Service Area Network. Sprint PCS will pay
     to Manager an Inter Service Area Fee for each billed minute or kilobyte of
     use that a Customer whose NPA-NXX is not assigned to the Service Area
     Network uses the Service Area Network.

               (a) Sprint PCS will pay to Manager the fees set forth in this
          Section 10.4.1 for each billed minute or kilobyte of use that a
          Reseller Customer uses the Service Area Network unless otherwise
          negotiated (such fees are referred to in this agreement as "RESELLER
          CUSTOMER FEES"):

                    (i) with respect to arrangements between Sprint PCS and
               resellers in existence as of April 1, 2004, that Manager has
               opted into other than Virgin Mobile USA, the amount of fees set
               forth in subsections 10.4.1.2 and 10.4.1.3, and with respect to
               Virgin Mobile USA, the amount of fees set forth in Program
               Requirement 3.5.2 - VMU; except, that the resale arrangement
               between Sprint PCS and Virgin Mobile USA will each be treated as
               a new resale arrangement and subject to the compensation set
               forth in section 10.4.1.1(a)(ii) or (iii), whichever is
               applicable, if continued after the expiration of the initial term
               of the arrangement;

                    (ii) with respect to arrangements between Sprint PCS and
               resellers that are entered into after April 1, 2004 and before
               January 1, 2007, or that are renewed or extended during that
               period, the amount of fees collected by Sprint PCS from the
               resellers as payment for the Reseller Customer's use of the
               Service Area Network; and

                    (iii) with respect to arrangements between Sprint PCS and
               resellers that are entered into, renewed or extended during the
               three-year period beginning on January 1, 2007, or a subsequent
               three-year period beginning on the third anniversary of the
               beginning of the previous three-year period, the amount of fees
               determined as described in section 10.4.1.1(c).

               (b) With respect to resale arrangements described in section
          10.4.1.1(a)(ii), Sprint PCS will give Manager Manager's proportional
          share of (i) any cash payments, in addition to the

                                       34

          reseller rate, relating specifically to the resale arrangements (other
          than those cash payments for reimbursement of expenses incurred to
          implement the resale arrangement), and (ii) to the extent reasonably
          able to be made available to Manager, non-cash payments relating
          specifically to the resale arrangements. For purposes of
          clarification, payments made to Sprint PCS by the other party to a
          resale arrangement to reimburse Sprint PCS for actual costs incurred
          to implement some aspect of the resale arrangement are not cash or
          non-cash payments subject to this section. Each resale arrangement
          will provide that the other party to the resale arrangement will
          reimburse Manager for Manager's actual costs incurred to implement the
          resale arrangement if (A) Sprint PCS obtains from the other party to
          the resale arrangement a commitment for that party to reimburse Sprint
          PCS for Sprint PCS' actual costs of implementing the resale
          arrangement and (B) Sprint PCS reasonably expects Manager to incur
          actual costs in implementing the resale arrangement for the reseller.

               If the reseller is a Related Party of Sprint PCS, then Sprint
          PCS, Manager and all Other Managers must agree on the Reseller
          Customer Fee to be paid by Sprint PCS to Manager and all Other
          Managers and any proportional sharing of any other cash and non-cash
          payments. If Manager does not so agree in writing with any such
          reseller arrangement with a Related Party of Sprint PCS, then Manager
          will have no obligation to opt into or support such reseller
          arrangement.

               (c) For each three-year period described in section
          10.4.1.1(a)(iii):

                    (i) Sprint PCS will give Manager proposed terms, fees and
               conditions applicable to Manager's participation in resale
               arrangements by October 31 of the calendar year before the
               calendar year in which the then current reseller period ends
               (e.g., the initial reseller period ends on December 31, 2006 so
               the amount has to be presented by October 31, 2005). Manager's
               representative and the Sprint PCS representative will begin
               discussions regarding the proposed terms, fees and conditions
               applicable to Manager's participation in resale arrangements
               within 20 days after Manager receives the proposed terms, fees
               and conditions applicable to Manager's participation in resale
               arrangements from Sprint PCS.

                    (ii) If the parties do not agree on the new terms, fees and
               conditions applicable to Manager's participation in

                                       35

               resale arrangements within 30 days after the discussions begin,
               then Manager may escalate the discussion to the Sprint PCS Chief
               Financial Officer or Sprint Spectrum may escalate the discussion
               to Manager's Chief Executive Officer or Chief Financial Officer.

                    (iii) If the parties cannot agree on the new terms, fees and
               conditions applicable to Manager's participation in resale
               arrangements through the escalation process within 20 days after
               the escalation process begins, then without Manager's prior
               written consent, Manager will not be required to participate in
               any resale arrangement that is entered into by Sprint PCS, or
               renewed or extended, after the Required Resale Participation
               Period. Manager will, however, continue to allow resellers with
               executed contracts under resale arrangements existing prior to or
               entered into, renewed or extended during the Required Resale
               Participation Period, with which Manager opted into or was
               required to participate under this Agreement, to activate
               subscribers with an NPA-NXX assigned to Manager's Service Area
               and support such resellers throughout the then remaining term of
               their resale arrangement with Sprint PCS, including any
               applicable renewal terms and phase out periods. Manager will
               continue to receive Reseller Customer Fees with respect to such
               resale arrangements at the same rates in effect at the end of the
               Required Resale Participation Period.

               Sprint PCS may not amend, modify or change in any manner the
          Inter Service Area Fees between Sprint PCS and Manager or Reseller
          Customer Fees and other matters set forth in this section 10.4.1
          without Manager's prior written consent, except as expressly provided
          in this section. For purposes of clarification, the parties do not
          intend the above sentence to limit Sprint PCS' ability to negotiate
          fees with resellers.

               Sprint PCS will not be obligated to pay Manager those Inter
          Service Area Fees not received by Sprint PCS from an Other Manager who
          is a debtor in a bankruptcy proceeding with respect to Inter Service
          Area Fees that Sprint PCS owes Manager because of CSAs assigned to
          such Other Manager's Service Area traveling in the Service Area. For
          clarification purposes, Sprint PCS does not have to advance the Inter
          Service Area Fees for the Other Manager who is involved in the
          bankruptcy proceeding to Manager, to the extent that the Other Manager
          fails to pay the Inter Service Area Fees. Manager bears the risk of
          loss of the Other Manager who is involved in the bankruptcy proceeding
          not paying the Inter Service Area Fees to Sprint PCS.

                                       36

               If relief is ordered under title 11 of the United States Code for
          an Other Manager or an Other Manager files a voluntary petition for
          relief under title 11 of the United States Code and such Other Manager
          fails to pay to Sprint PCS amounts that such Other Manager owes to
          Sprint PCS with respect to the Inter Service Area Fees for travel into
          Manager's Service Area, Sprint PCS will immediately assign to Manager
          all of its claims and rights as a creditor of such Other Manager for
          those amounts owed with respect to Inter Service Area Fees for travel
          in Manager's Service Area. Sprint PCS agrees to take all actions
          necessary to effect this assignment of rights to Manager, and further
          agrees that Manager will not be responsible for any expenses related
          to such assignment. If Sprint PCS receives any amounts from an Other
          Manager involved in a bankruptcy proceeding with respect to Inter
          Service Area Fees for travel into the Service Area, Sprint PCS will
          immediately remit those amounts to Manager. If relief is ordered under
          title 11 of the United States Code for Sprint PCS or Sprint PCS files
          a voluntary petition for relief under title 11 of the United States
          Code, then Sprint PCS will be deemed a trustee for Manager's benefit
          with respect to any Inter Service Area Fees that Sprint PCS collects
          from Other Managers for travel into Manager's Service Area, and Sprint
          PCS has no rights to Manager's portion of such Inter Service Area
          Fees.

               Manager acknowledges that if the manner in which the CSAs are
          assigned changes because of changes in the manner in which the NPA-NXX
          is utilized, the manner in which the Inter Service Area Fees and
          Reseller Customer Fees, if any, will be calculated might be changed
          accordingly.

                    10.4.1.2 Voice and 2G Data Rate. The amount of the Inter
          Service Area Voice and 2G Data Fee and Reseller Customer Voice and 2G
          Data Fee for arrangements between Sprint PCS and resellers in
          existence as of April 1, 2004, will be as follows:

                    (a) The Inter Service Area Voice and 2G Data Fee for each
               billed minute of use that a Customer uses an Away Network and the
               Reseller Customer Fee for each billed minute of use that a
               Reseller Customer uses the Service Area Network, will be $0.058
               from the Effective Date to December 31, 2006.

                    (b) For each calendar year during the Term of this agreement
               beginning January 1, 2007, the Inter Service Area Voice and 2G
               Data Fee for each billed minute of use that a Customer uses an
               Away Network and the Reseller Customer Fee for each billed minute
               of use that a Reseller Customer uses the Service Area Network,
               will be an amount equal to 90% of Sprint PCS' Retail Yield for
               Voice and 2G Data Usage for the previous calendar year;

                                       37

               provided that such amount for any period will not be less than
               Manager's network costs (including a reasonable return using
               Manager's weighted average cost of capital applied against
               Manager's net investment in the Service Area Network) to provide
               the services that are subject to the Inter Service Area Voice and
               2G Data Fee. If the parties have a dispute relating to the
               determination of the foregoing fees for any period, then the
               parties will submit the dispute to binding arbitration as set
               forth in section 10.4.1.3(b).

                    10.4.1.3 3G Data Rate. The amount of the Inter Service Area
     3G Data Fee and Reseller Customer 3G Data Fee for arrangements between
     Sprint PCS and resellers in existence as of April 1, 2004, will be as
     follows:

                    (a) From the Effective Date to December 31, 2006 ("INITIAL
               3G DATA FEE PERIOD"), the Inter Service Area 3G Data Fee for each
               kilobyte of use that a Customer uses an Away Network and the
               Reseller Customer 3G Data Fee for each kilobyte of use that a
               Reseller Customer uses the Service Area Network, will be $0.0020;
               except with respect to Sprint 3G Data Service as defined and set
               out in the Program Requirement 3.5.2.

                    (b) The parties will reset the Inter Service Area 3G Data
               Fee and the Reseller Customer 3G Data Fee after the Initial 3G
               Data Fee Period ends. The Inter Service Area 3G Data Fee and the
               Reseller Customer 3G Data Fee will be based on an appropriate
               discount from the Sprint PCS Retail Yield for 3G Data Usage for
               the previous calendar year to be negotiated before December 31,
               2006. Each subsequent fee period will last three years with, for
               example, the second pricing period beginning on January 1, 2007
               and ending on December 31, 2009.

                    The process for resetting the fees is as follows:

                         (i) Sprint PCS will give Manager a proposal for the
                    appropriate discount from the Sprint PCS Retail Yield for 3G
                    Data Usage by March 31 of the final year of the then current
                    pricing period. Manager's representative and the Sprint PCS
                    representative will begin discussions regarding the proposed
                    schedule of fees within 20 days after Manager receives the
                    proposed schedule of fees from Sprint PCS.

                         (ii) Manager may escalate the discussion to the Chief
                    Financial Officer of Sprint PCS or Sprint PCS may escalate
                    the discussion to Manager's Chief Executive

                                       38

                    Officer or Chief Financial Officer if the parties do not
                    agree on a new schedule of fees within 30 days after the
                    discussions begin.

                         (iii) If the parties cannot agree on a new schedule of
                    fees within 20 days after a party escalates the discussion,
                    then Manager may either agree to the fees set forth in the
                    Inter Service Area 3G Data Fee and Reseller Customer 3G Data
                    Fee proposal or submit the determination of the Inter
                    Service Area 3G Data Fee and Reseller Customer 3G Data Fee
                    to binding arbitration based on a market-rate determination
                    of an appropriate Inter Service Area 3G Data Fee and
                    Reseller Customer 3G Data Fee in accordance with section
                    14.2, excluding the escalation process set forth in section
                    14.1.

                         (iv) If Manager submits the matter to arbitration the
                    fees that Sprint PCS proposed will apply starting after
                    December 31 of the first year of the appropriate period as
                    described in section 10.4.1.4 and will continue in effect
                    unless modified by the final decision of the arbitrator. If
                    the arbitrator imposes a fee different than the ones in
                    effect the new fees will be applied as if in effect after
                    December 31 of the first year of the appropriate period as
                    described in section 10.4.1.4 and if on application of the
                    new fees one party owes the other party any amount after
                    taking into account payments the parties have already made
                    then the owing party will pay the other party within 30 days
                    of the date of the final arbitration order.

                    10.4.1.4 Rate Changes - Effective Date. All rate changes
     related to Inter Service Area Fees and Reseller Customer Fees will be
     applied to all activity in a bill cycle regardless of when the activity
     occurred, if the bill cycle ends after the effective date of the rate
     change.

                    10.4.1.5 Long Distance. The long distance rates associated
     with the Inter Service Area and Reseller Customer usage will be equal to
     the actual wholesale transport and terminating costs associated with the
     originating and terminating locations. The rates are then applied to
     cumulative usage at a BID level for settlement purposes.

               10.4.2 INTERCONNECT FEES. Manager will pay to Sprint PCS (or to
     other carriers as appropriate) monthly the interconnect fees, if any, as
     provided under section 1.4.

                                       39

               10.4.3 TERMINATING AND ORIGINATING ACCESS FEE. Sprint PCS will
     pay Manager 92% of any terminating or originating access fees Sprint PCS
     collects from an IXC that are not subject to refund or dispute (but it will
     not be Billed Revenue). For purposes of clarification, Sprint Corporation's
     Related Parties are obligated to pay terminating access to Sprint PCS only
     if MCI and AT&T pay terminating or originating access to Sprint PCS. At the
     Effective Date of Addendum X, neither MCI nor AT&T pays terminating access
     to Sprint PCS. The ability of wireless carriers to collect access fees is
     currently subject to legal challenge. The parties acknowledge that Sprint
     PCS has limited ability to require IXCs to pay access fees.

               10.4.4 REIMBURSEMENTS FOR MISTAKEN PAYMENTS. If one party
     mistakenly pays an amount that the other party is obligated to pay then the
     other party will reimburse the paying party, if the paying party identifies
     the mistake and notifies the receiving party within 9 calendar months after
     the date on which the paying party makes the mistaken payment.

          10.5 TAXES AND PAYMENTS TO THE GOVERNMENT. Manager will pay or
     reimburse Sprint PCS for any sales, use, gross receipts or similar tax,
     administrative fee, telecommunications fee or surcharge for taxes or fees
     that a governmental authority levies on the fees and charges payable by
     Sprint PCS to Manager.

          Manager will report all taxable property to the appropriate taxing
     authority for ad valorem tax purposes. Manager will pay as and when due all
     taxes, assessments, liens, encumbrances, levies and other charges against
     the real estate and personal property that Manager owns or uses in
     fulfilling its obligations under this agreement.

          Manager is responsible for paying all sales, use or similar taxes on
     the purchase and use of its equipment, advertising and other goods or
     services in connection with this agreement.

          Sprint PCS will be solely responsible for remitting to government
     agencies or their designees any and all fees or other amounts owed as a
     result of the services provided to the Customers under the Management
     Agreement. As a consequence of this responsibility, Sprint PCS is entitled
     to 100% of any amounts that Manager, Sprint PCS or their Related Parties
     receives from Customers (including Customers whose NPA-NXX is assigned to
     the Service Area) relating to these fees or other amounts.

          10.6 UNIVERSAL SERVICE FUNDS.

                                       40

                    10.6.1 PAID BY GOVERNMENT. Manager is entitled to 100% of
     any federal and state subsidy funds (the "SUBSIDY FUNDS"), including
     Universal Service Funds, that Manager or Sprint PCS receives from
     government disbursements based on customers with mailing addresses located
     in the Service Area and with NPA-NXXs assigned to the Service Area, or such
     other method then in effect under the rules of the FCC, Universal Service
     Administrative Company or other federal or state administrator. For
     purposes of clarity, Universal Service Funds provide support payments to
     Eligible Telecommunications Carriers ("ETC") serving in high cost areas or
     providing services to low income individuals. Sprint PCS will file on
     behalf of itself or Manager appropriate ETC documentation in those
     jurisdictions in which Sprint PCS determines to make the filing.

          If Manager asks Sprint PCS to make a filing in a jurisdiction and
     Sprint PCS reasonably determines not to make the filing because making the
     filing is detrimental to Sprint's best interests, then Sprint does not have
     to make the filing. If Manager disagrees with the reasonableness of Sprint
     PCS' determination not to make the filing, then the parties will submit to
     binding arbitration in accordance with section 14.2, excluding the
     escalation process set forth in section 14.1.

          If the process set forth in the previous paragraph results in Sprint
     PCS making a filing, Manager will pay all of Sprint PCS' reasonable
     out-of-pocket costs associated with the filing and any compliance
     obligations that arise from the filing or that are imposed by the
     jurisdiction in which the filing is made (e.g. filing fees, legal fees,
     expert witness retention, universal lifeline service, enhancing customer
     care quality, and including, without limitation, network upgrades). Sprint
     PCS will remit to Manager 50% of any Subsidy Funds that Sprint PCS receives
     from filings Sprint PCS is required to make under the preceding paragraph
     that are not payable to Manager under the first paragraph of this section
     10.6.1, until the aggregate amount of the payments to Manager under this
     sentence equals 50% of the amount Manager has paid Sprint PCS under the
     preceding sentence.

          All Subsidy Funds received must be used to support the provision,
     maintenance and upgrading of facilities and services for which the funds
     are intended. Sprint PCS will attempt to recover from the appropriate
     governmental authority Subsidy Funds and will remit the appropriate
     recoveries to Manager.

                    10.6.2 PAID BY CUSTOMERS. Sprint PCS will be solely
     responsible for remitting to government agencies or their designees,
     including but not limited to the Universal Service Administrative Company,
     all universal service fees. As a consequence of this

                                       41

     responsibility, Sprint PCS is entitled to 100% of any amounts that Manager,
     Sprint PCS or their Related Parties receives from Customers (including
     Customers whose NPA-NXX is assigned to the Service Area) relating to the
     Universal Service Funds.

          10.7 EQUIPMENT REPLACEMENT PROGRAM. Sprint PCS is entitled to 100% of
     the amounts that Customers pay for participating in any equipment
     replacement program billed on their Sprint PCS bills. Manager will not be
     responsible for or in any way billed for any costs or expenses that Sprint
     PCS or any Sprint PCS Related Party incurs in connection with any such
     equipment replacement program.

          10.8 CUSTOMER EQUIPMENT. Sprint PCS is entitled to 100% of the amounts
     that Customers pay for subscriber equipment and accessories sold or leased
     by Sprint PCS, and Manager is entitled to 100% of the amounts that
     Customers pay for subscriber equipment and accessories that Manager sold or
     leased, subject to the equipment settlement process in section 4.1.2.

          10.9 PHASE I E911. Sprint PCS is entitled to collect 100% of the E911
     Phase I Surcharges (e.g., for equipment other than handsets, such as
     platforms and networks). Sprint PCS will attempt to recover from the
     appropriate governmental authority Phase I E911 reimbursements and will
     remit the appropriate amounts to Manager.

          10.10 MANAGER DEPOSITS INTO RETAIL BANK ACCOUNTS. Each Business Day,
     Manager will deposit into bank accounts and authorize Sprint PCS or a
     Related Party that Sprint PCS designates to sweep from such accounts the
     amounts collected from Customers on behalf of Sprint PCS and its Related
     Parties for Sprint PCS Products and Services. Manager will allow the funds
     deposited in the bank accounts to be transferred daily to other accounts
     that Sprint PCS designates. Manager will also provide the daily reports of
     the amounts collected that Sprint PCS requires. Manager will not make any
     changes to the authorizations and designations Sprint PCS designates for
     the bank accounts without Sprint PCS' prior written consent.

          10.11 MONTHLY STATEMENTS.

               10.11.1 SECTION 10.2 STATEMENT. Each month Sprint PCS will
     determine the amount payable to or due from Manager for a Billed Month
     under section 10.2. Sprint PCS will deliver a monthly statement to Manager
     that reports the amount due to Manager, the manner in which the amount was
     calculated, the amount due to Sprint PCS and its Related Parties under this
     agreement and the Services Agreement, and the net amount payable to or due
     from Manager.

                                       42

                           10.11.2 OTHER STATEMENTS. Sprint PCS will deliver a
         monthly statement to Manager that reports amounts due to Manager or
         from Manager, other than amounts described in section 10.12.1, the
         manner in which the amounts were calculated, the amount due to Manager
         or to Sprint PCS and its Related Parties under this agreement and the
         Services Agreement, and the net amount payable to Manager.

                           10.11.3 THIRD PARTY CHARGES. Sprint PCS will include
         any third party charges on Manager's statements within three calendar
         months after the end of the calendar month during which Sprint PCS
         receives the third party charge. Sprint PCS' failure to include these
         charges on Manager's statements within the three calendar month-period
         will mean that Sprint PCS cannot collect those third party charges from
         Manager.

                  10.12    PAYMENTS.

                           10.12.1 WEEKLY PAYMENTS. Sprint PCS will pay the
         amount payable to Manager for a Billed Month under section 10.2 in
         equal weekly payments on consecutive Thursdays beginning the second
         Thursday of the calendar month following the Billed Month and ending on
         the first Thursday of the second calendar month after the Billed Month.
         If Sprint PCS is unable to determine the amount due to Manager in time
         to make the weekly payment on the second Thursday of a calendar month,
         then Sprint PCS will pay Manager for that week the same weekly amount
         it paid Manager for the previous week. Sprint PCS will true-up any
         difference between the actual amount due for the first weekly payment
         of the Billed Month and amounts paid for any estimated weekly payments
         after Sprint PCS determines what the weekly payment is for that month.
         Sprint PCS will use reasonable efforts to true-up within 10 Business
         Days after the date on which Sprint PCS made the estimated weekly
         payment.

                           10.12.2 MONTHLY PAYMENTS. The amounts payable to
         Manager and Sprint PCS and its Related Parties under this agreement and
         the Services Agreement, other than the payments described in section
         10.12.1, will be determined, billed and paid monthly in accordance with
         section 10.12.3.

                           10.12.3 TRANSITION OF PAYMENT METHODS. (a) Sprint PCS
         and Manager wish to conduct an orderly transition from making weekly
         payments to Manager based on Collected Revenues to weekly payments
         based on Billed Revenue. The method of calculating the weekly payments
         will change on the first day of the calendar month after the Effective
         Date of Addendum X (the "TRANSITION DATE"). The weekly amounts paid to
         Manager during the calendar month before the Transition Date and on the
         first Thursday after the Transition Date will be based on the Collected

                                       43

         Revenues method. The weekly amounts paid to Manager beginning on the
         second Thursday of the second calendar month after the Transition Date
         will be based on the Billed Revenue method described in this section
         10. To effect an orderly transition, Sprint PCS will pay Manager for
         the period beginning on the second Thursday after the Transition Date
         and ending on the first Thursday of the calendar month after the
         Transition Date an amount calculated as described below in section
         10.12.3(b).

                           (b) Sprint PCS will apply the estimated collection
         percentages that Sprint PCS uses before the Transition Date to the
         gross accounts receivable aging categories for Customers with an
         NPA-NXX assigned to the Service Area as of the close of business on the
         day before the Transition Date to calculate the amount Sprint PCS
         anticipates collecting on those accounts receivable. Sprint PCS will
         pay Manager the amount estimated to be collected in equal weekly
         payments on consecutive Thursdays beginning the second Thursday after
         the Transition Date and ending the first Thursday of the calendar month
         after the Transition Date. Sprint PCS will also pay to Manager no later
         than the second Thursday after the Transition Date any Collected
         Revenues received after the Saturday before the Transition Date and
         before the Transition Date.

                           (c) Sprint PCS will recalculate the estimated
         collection percentages and apply the recalculated estimated collection
         percentages to the gross accounts receivable aging categories described
         in the first sentence of section 10.12.3(b) when all applicable data is
         available. Sprint PCS will increase or decrease a weekly payment by the
         amount of the difference between the amount paid to Manager based on
         the initial estimated collection percentages and the amount that would
         have been paid to Manager using the newer estimated collection
         percentages.

                  10.13 DISPUTE OR CORRECTION OF STATEMENT AMOUNT. A party can
         only dispute or correct an amount on a statement in good faith. If a
         party disputes or corrects an amount on a statement, the disputing or
         correcting party must give the other party written notice of the
         specific item disputed or corrected, the disputed or corrected amount
         with respect to that item and the reason for the dispute or correction
         within three calendar months after the end of the calendar month during
         which the disputed or erroneous statement was delivered.

                  Any dispute regarding a statement will be submitted for
         resolution under the dispute resolution process in section 14. The
         parties must continue to pay to the other party all amounts, except
         disputed amounts (subject to the next paragraph), owed under this
         agreement and the Services Agreement during the dispute resolution
         process. If the aggregate disputed amount, combined with any aggregate
         disputed amount

                                       44

         under section 10.14, exceeds $1,000,000, and upon the written request
         of the other party, the party disputing the amount (the "DISPUTING
         PARTY") will deposit the portion of the disputed amount in excess of
         $1,000,000 into an escrow account that will be governed by an escrow
         agreement in a form to be mutually agreed upon by the parties. The
         Disputing Party will deposit the amount into the escrow account within
         10 Business Days after its receipt of the written request from the
         other party in accordance with the foregoing. If the Disputing Party
         complies with the requirements of this paragraph, then the other party
         or its Related Parties may not declare the Disputing Party in breach
         of this agreement or the Services Agreement because of nonpayment of
         the disputed amount, pending completion of the dispute resolution
         process.

                  The escrow agent will be an unrelated third party that is in
         the business of serving as an escrow agent for or on behalf of
         financial institutions. The parties will share evenly the escrow
         agent's fees. The escrow agent will invest and reinvest the escrowed
         funds in interest-bearing money market accounts or as the parties
         otherwise agree. The escrow agent will disburse the escrowed funds in
         the following manner based on the determination made in the dispute
         resolution process:

                                    (a) If the Disputing Party does not owe any
                  of the disputed amounts, then the escrow agent will return all
                  of the escrowed funds to the Disputing Party with the interest
                  earned on the escrowed funds.

                                    (b) If the Disputing Party owes all of the
                  disputed amounts, then the escrow agent will disburse all of
                  the escrowed funds with the interest earned on the escrowed
                  funds to the non-disputing party. If the interest earned is
                  less than the amount owed based on the Default Rate, then the
                  Disputing Party will pay the non-disputing party the
                  difference between those amounts.

                                    (c) If the Disputing Party owes a portion of
                  the disputed amounts, then the escrow agent will disburse to
                  the non-disputing party the amount owed with interest at the
                  Default Rate from the escrowed funds and disburse the balance
                  of the escrowed funds to the Disputing Party. The Disputing
                  Party will pay the non-disputing party the amount owed for
                  interest at the Default Rate if the amount of the escrowed
                  funds is insufficient.

                  Manager and Sprint PCS will take all reasonable actions
         necessary to allow the Disputing Party to continue to reflect the
         amounts deposited into the escrow account by the Disputing Party as
         assets in the Disputing Party's financial statements.

                                       45

                  The parties will use the dispute resolution process under
         section 14.2 of this agreement, excluding the escalation process set
         forth in section 14.1, if they cannot agree on the form of escrow
         agreement.

                  The parties agree that, despite this section 10.13, Manager
         will pay all disputed amounts due to Sprint PCS or any Related Party
         for fees for CCPU Services and CPGA Services payable under the Services
         Agreement for periods ending on or before December 31, 2006, subject to
         any other rights and remedies that Manager has under this agreement and
         the Services Agreement.

                  The dispute of an item in a statement does not stay or
         diminish a party's other rights and remedies under this agreement,
         except that a party must complete the dispute resolution process in
         section 14 before taking any legal or equitable action against the
         other party.

                  10.14 DISPUTE OR CORRECTION OF A THIRD PARTY INVOICE AMOUNT.
         Sprint PCS will include the applicable portion of any amount based on a
         third party invoice in a statement to Manager within three calendar
         months after Sprint PCS' receipt of the third party invoice. Sprint
         PCS' failure to include the amount in a statement to Manager within the
         three calendar month-period will mean that the third party charges will
         not be collectible from Manager.

                  A party can dispute or correct an amount based on a third
         party invoice only in good faith. Modified invoices received by Sprint
         PCS from a third party vendor and then sent by Sprint PCS to Manager
         will be treated as a new statement for purposes of this section, so
         long as the modified statement was revised in good faith and not simply
         to provide Sprint PCS additional time to resubmit a previous invoice.

                  If a party disputes or corrects an amount on a third party
         invoice or the amount Sprint PCS attributed to Manager, the disputing
         party must give the other party written notice of the specific item
         disputed or corrected, the disputed or corrected amount with respect to
         that item and the reason for the dispute or correction within three
         calendar months after the end of the calendar month during which the
         disputed or erroneous statement was delivered. Sprint PCS and Manager
         will cooperate with each other to obtain the information needed to
         determine if the amounts billed by the third party and allocated to
         Manager were correct.

                  Any dispute regarding the amount of the third party invoice
         Sprint PCS attributed to Manager will be submitted for resolution under
         the dispute resolution process in section 14. Manager must continue to
         pay to Sprint PCS all amounts, except disputed amounts, owed under this
         agreement and the Services Agreement during the information gathering

                                       46

         and dispute resolution process. If the aggregate disputed amount,
         combined with any aggregate disputed amount under section 10.13,
         exceeds $1,000,000, and upon the written request of Sprint PCS, Manager
         will deposit the portion of the disputed amount in excess of $1,000,000
         into an escrow account that will be governed by an escrow agreement
         containing terms similar to the general terms described in section
         10.13 and in a form to be mutually agreed upon by the parties. Manager
         will deposit the amount into the escrow account within 10 Business Days
         after its receipt of the written request from Sprint PCS in accordance
         with the foregoing. If Manager complies with the requirements of this
         paragraph, then none of Sprint PCS or its Related Parties may declare
         Manager in breach of this agreement or the Services Agreement because
         of nonpayment of the disputed amount, pending completion of the dispute
         resolution process.

                  The dispute of an item in a statement does not stay or
         diminish a party's other rights and remedies under this agreement,
         except that the parties must complete the dispute resolution process in
         section 14 before taking any legal or equitable action against each
         other.

                  10.15 LATE PAYMENTS. Any amount due under this agreement or
         the Services Agreement without a specified due date will be due 20 days
         after Manager receives an invoice. Any amount due under this agreement
         and the Services Agreement (including without limitation any amounts
         disputed under those agreements that are ultimately determined to be
         due) that is not paid by one party to the other party in accordance
         with the terms of the applicable agreement will bear interest at the
         Default Rate beginning (and including) the 6th day after the invoice or
         settlement due date until (and including) the date paid.

                  10.16 SETOFF RIGHT IF FAILURE TO PAY AMOUNTS DUE. If Manager
         fails to pay any undisputed amount due Sprint PCS or a Related Party of
         Sprint PCS under this agreement, any undisputed amount due Sprint PCS
         or a Related Party of Sprint PCS under the Services Agreement or any
         other agreement with Sprint PCS or a Related Party of Sprint PCS, or
         any disputed amount due to Sprint PCS or a Related Party for fees for
         CCPU Services or CPGA Services payable under the Services Agreement,
         then 5 days after the payment due date Sprint PCS may setoff against
         its payments to Manager under this section 10 any such undisputed
         amount that Manager owes to Sprint PCS or a Related Party of Sprint
         PCS. This right of setoff is in addition to any other right that Sprint
         PCS or a Related Party of Sprint PCS might have under this agreement,
         the Services Agreement or any other agreements with Sprint PCS or a
         Related Party of Sprint PCS.

                                       47

     18. TERMINATION RIGHTS [ADDM XI,SS.17]. Section 11.3.7 is deleted, and all
references in the agreement to section 11.3.7 are also deleted.

     19. BUSINESS VALUATION [ADDM VIII,SS.4]. A new subsection 11.7.4(f) is
added:

                           (f) In the event the Entire Business Value of the
                  Manager is being determined, the entire value of any Operating
                  Asset may be allocated among the Manager and one or more of
                  the Other Affiliates, where appropriate, but the sum of the
                  values attributed to such Operating Asset in determining the
                  Entire Business Value of the Manager and the Other Affiliates
                  shall not exceed the value of such Operating Asset if it were
                  used to calculate only the Manager's Entire Business Value
                  (i.e. "double counting" is prohibited).

     20. AUDIT [ADDM XI,SS.19]. Section 12.1.2 is amended and restated in its
entirety to read as follows:

                  12.1.2 AUDITS. On reasonable advance notice by one party, the
         other party must provide its independent or internal auditors access to
         its appropriate financial and operating records, including, without
         limitation, vendor and distribution agreements, for purposes of
         auditing the amount of fees (including the appropriateness of items
         excluded from the Fee Based on Billed Revenue), costs, expenses
         (including operating metrics referred to in this agreement and the
         Services Agreement relating to or used in the determination of Inter
         Service Area Fees, Reseller Customer Fees, CCPU Services or CPGA
         Services) or other charges payable in connection with the Service Area
         for the period audited. The party that requested the audit may decide
         if the audit is conducted by the other party's independent or internal
         auditors. Manager and Sprint PCS may each request no more than one
         audit per year.

                           (a) If the audit shows that Sprint PCS was underpaid
                  then, unless the amount is contested, Manager will pay to
                  Sprint PCS the amount of the underpayment within 10 Business
                  Days after Sprint PCS gives Manager written notice of the
                  underpayment determination.

                           (b) If the audit determines that Sprint PCS was
                  overpaid then, unless the amount is contested, Sprint PCS will
                  pay to Manager the amount of the overpayment within 10
                  Business Days after Manager gives Sprint PCS written notice of
                  the overpayment determination.

                  The auditing party will pay all costs and expenses related to
         the audit unless the amount owed to the audited party is reduced by
         more than

                                       48

         10% or the amount owed by the audited party is increased by more than
         10%, in which case the audited party will pay the costs and expenses
         related to the audit.

                  Sprint PCS will provide a report issued in conformity with
         Statement of Auditing Standard No. 70 "Reports on the Processing of
         Transactions by Service Organizations" ("TYPE II REPORT" or "MANAGER
         MANAGEMENT REPORT") to Manager annually. If Manager, on the advice of
         its independent auditors or its legal counsel, determines that a
         statute, regulation, rule, judicial decision or interpretation, or
         audit or accounting rule, policy or literature published by the
         accounting or auditing profession or other authoritative rule making
         body (such as the Securities and Exchange Commission, the Public
         Company Accounting Oversight Board or the Financial Accounting
         Standards Board) requires additional assurances beyond SAS 70, then
         Sprint PCS will cooperate with Manager to provide the additional
         assurances. Sprint PCS' independent auditors will prepare any Type II
         Report or Manager Management Report provided under this section 12.1.2
         and will provide an opinion on the controls placed in operation and
         tests of operating effectiveness of those controls in effect at Sprint
         PCS over Manager Management Processes. "Manager Management Processes"
         include those services generally provided within this agreement,
         primarily billing and collection of revenues.

     21. NOTICES [ADDM IV,SS.5 AND ADDM XI,SS.20]. (a) Section 17.1 is amended
and restated in its entirety to read as follows:

                  17.1 NOTICES. (a) Any notice, payment, invoice, demand or
         communication required or permitted to be given by any provision of
         this agreement must be in writing and mailed (certified or registered
         mail, postage prepaid, return receipt requested), sent by hand or
         overnight courier, charges prepaid or sent by facsimile or email (in
         either instance with acknowledgement or read receipt received), and
         addressed as described below, or to any other address or number as the
         person or entity may from time to time specify by written notice to the
         other parties. Sprint PCS may give notice of changes to a Program
         Requirement by sending an email that directs Manager to the changed
         Program Requirement on the affiliate intranet website.

                  The subject line of any email notice that purports to amend
         any Program Requirement must read "Program Requirement Change" and the
         first paragraph must indicate (i) which Program Requirement is being
         modified, (ii) what is being modified in the Program Requirement, and
         (iii) when the Program Requirement will take effect. The email must
         also include either a detailed summary of the Program Requirement
         Change or a redline comparison between the old Program Requirement and
         the new Program Requirement.

                                       49

                  Any notice, demand or communication intended to be notice of a
         breach of an agreement or notice of an Event of Termination must:

                           (A) clearly indicate that intent,

                           (B) state the section(s) of the agreements allegedly
                  breached, and

                           (C) be mailed or sent by overnight courier in the
                  manner described in the first paragraph in this section 17.1.

                  Manager will promptly give Sprint PCS a copy of any notice
         Manager receives from the Administrative Agent or any Lender, and a
         copy of any notice Manager gives to the Administrative Agent or any
         Lender. Sprint PCS will promptly give Manager a copy of any notice that
         Sprint PCS receives from the Administrative Agent or any Lender and a
         copy of any notice that Sprint PCS gives to the Administrative Agent or
         any Lender.

                  All notices and other communications given to a party in
         accordance with the provisions of this agreement will be deemed to have
         been given when received.

         (b)  The parties' notice addresses are as follows:

         For all entities comprising Sprint PCS:

                           Sprint PCS
                           KSOPHJ0212-2A101
                           6130 Sprint Parkway
                           Overland Park, KS 66251
                           Telephone: 913-762-7929
                           Telecopier: 913-523-0539
                           Email: dbotto01@sprintspectrum.com
                           Attention: Vice President - Finance

                  with a copy to:

                           Sprint Law Department
                           KSOPHT0101-Z2020
                           6391 Sprint Parkway
                           Overland Park, KS 66251
                           Telephone: 913-315-9315
                           Telecopier: 913-523-9823
                           Email: john.w.chapman@mail.sprint.com
                           Attention: John Chapman

                                       50

         For Manager:

                           Alamosa Missouri, LLC
                           5225 S. Loop 289
                           Suite 120
                           Lubbock, TX 79424
                           Telephone: 806-722-1100
                           Telecopier: 806-722-1127
                           Email: dsharbutt@alamosapcs.com
                           Attention: David Sharbutt, President

                  with a copy to:

                           Crenshaw, Dupree & Milam, L.L.P.
                           Wells Fargo Center
                           1500 Broadway, 8th Floor
                           Lubbock, Texas 79401
                           Telephone: 806-762-5281
                           Telecopier: 806-762-3510
                           Email: JMcCutchin@cdmlaw.com
                           Attention: Jack McCutchin, Jr.

                  and with copies to the following individuals' email addresses
         if a notice of a Program Requirement Change is sent by email:

                           Kendall W. Cowan, Chief Financial Officer
                           Email: kcowan@alamosapcs.com

                           Stephen A. Richardson, Chief Operating Officer
                           Email: srichardson@alamosapcs.com

                           Loyd I. Rinehart, Senior Vice President of Corporate
                           Finance
                           Email: lrinehart@alamosapcs.com

     22. FORCE MAJEURE [ADDM XI,SS.21]. The second paragraph of section 17.9.3
is amended and restated in its entirety to read as follows:

                  Neither Manager nor Sprint PCS, as the case may be, is in
         breach of any covenant in this agreement, and no Event of Termination
         will occur as a result of the failure of such party to comply with any
         covenant, if the party's non-compliance with the covenant results
         primarily from:

                                       51

                                    (i) any FCC order or any other injunction
                           that any governmental authority issues that impedes
                           the party's ability to comply with the covenant,

                                    (ii) the failure of any governmental
                           authority to grant any consent, approval, waiver or
                           authorization or any delay on the part of any
                           governmental authority in granting any consent,
                           approval, waiver or authorization,

                                    (iii) the failure of any vendor to deliver
                           in a timely manner any equipment or service, or

                                    (iv) any act of God, act of war or
                           insurrection, riot, fire, accident, explosion, labor
                           unrest, strike, civil unrest, work stoppage,
                           condemnation or any similar cause or event not
                           reasonably within the control of the party.

     23. GOVERNING LAW, JURISDICTION AND CONSENT TO SERVICE OF PROCESS [ADDM
XI,SS.22]. Section 17.12 of the Management Agreement is replaced with the
following language:

                  17.12    GOVERNING LAW, JURISDICTION AND CONSENT TO SERVICE
         OF PROCESS.

                           17.12.1 GOVERNING LAW. The internal laws of the State
         of Kansas (without regard to principles of conflicts of law) govern the
         validity of this agreement, the construction of its terms, and the
         interpretation of the rights and duties of the parties.

                           17.12.2  JURISDICTION; CONSENT TO SERVICE OF PROCESS.

                           (a) Each party hereby irrevocably and unconditionally
                  submits, for itself and its property, to the nonexclusive
                  jurisdiction of any Kansas State court sitting in the County
                  of Johnson or any Federal court of the United States of
                  America sitting in the District of Kansas, and any appellate
                  court from any such court, in any suit action or proceeding
                  arising out of or relating to this agreement, or for
                  recognition or enforcement of any judgment, and each party
                  hereby irrevocably and unconditionally agrees that all claims
                  in respect of any such suit, action or proceeding may be heard
                  and determined in such Kansas State Court or, to the extent
                  permitted by law, in such Federal court.

                           (b) Each party hereby irrevocably and unconditionally
                  waives, to the fullest extent it may legally do so, any
                  objection which it may now or hereafter have to the laying of
                  venue of any suit, action or proceeding arising out of or
                  relating to this agreement in Kansas State court sitting in

                                       52

                  the County of Johnson or any Federal court sitting in the
                  District of Kansas. Each party hereby irrevocably waives, to
                  the fullest extent permitted by law, the defense of an
                  inconvenient forum to the maintenance of such suit, action or
                  proceeding in any such court and further waives the right to
                  object, with respect to such suit, action or proceeding, that
                  such court does not have jurisdiction over such party.

                           (c) Each party irrevocably consents to service of
                  process in the manner provided for the giving of notices
                  pursuant to this agreement, provided that such service shall
                  be deemed to have been given only when actually received by
                  such party. Nothing in this agreement shall affect the right
                  of a party to serve process in another manner permitted by
                  law.

     24. TRANSFER OF SPRINT PCS NETWORK [ADDM VIII,SS.9]. The first sentence of
section 17.15.5 is replaced with the following sentence:

                  In conjunction with the sale of the Sprint PCS Network, Sprint
         PCS may sell, transfer or assign the Sprint PCS Network and any of the
         Licenses, including its rights and obligations under this agreement,
         the Services Agreement and any related agreements, to a third party
         without Manager's consent so long as the third party assumes the rights
         and obligations under this agreement and the Services Agreement.

     25. CROSS-DEFAULT [ADDM VIII,SS.2 AND ADDM IX,SS.2]. A new section 17.26 is
added to the Management Agreement:

                  17.26 CROSS-DEFAULT. A breach or Event of Termination under
         any of the Sprint Agreements (as that term is defined in the Consent
         and Agreement) by Texas Telecommunications, L.P., a Texas limited
         partnership, Alamosa Wisconsin Limited Partnership, a Wisconsin limited
         partnership, Southwest PCS, L.P., an Oklahoma limited partnership, or
         Washington Oregon Wireless LLC, a Delaware limited liability company,
         or their respective successors or assigns (collectively the "OTHER
         AFFILIATES") also constitutes a breach or Event of Termination, as the
         case may be, by Manager of the same provision of the applicable Sprint
         Agreement to which Manager is a party, and the Sprint Parties (as that
         term is defined in the Consent and Agreement) shall have the same
         rights under the Sprint Agreements and the Consent and Agreement to
         which Manager is a party as if the same breach or Event of Termination
         had occurred under such Sprint Agreement. Manager has no right to cure
         any breach or Event of Termination with respect to an Other Affiliate.
         Such breach or Event of Termination by an Other Affiliate shall not
         qualify as a force majeure under the Sprint Agreements or the Consent
         and Agreement.

     26. PERFORMANCE/PAYMENT OF OTHER AFFILIATES' OBLIGATIONS [ADDM VIII,SS.3].
A new section 17.27 is added to the Management Agreement:

                                       53

                  17.27 PERFORMANCE/PAYMENT OF OTHER AFFILIATES' OBLIGATIONS. To
         induce the Sprint Parties to enter into the Consent and Agreement with
         Citicorp, Manager absolutely and unconditionally guarantees the prompt
         and punctual performance and payment of the Obligations (as that term
         is defined in the Consent and Agreement) of the Other Affiliates and
         their respective successors or assigns when due and payable pursuant to
         the terms of the Other Affiliates' Sprint Agreements as they may be
         amended and modified. Manager agrees that the Sprint Parties shall not
         be required first to collect from any other guarantor of any such
         obligation or to proceed against or exhaust any collateral or security
         for any obligation before requiring Manager to perform or pay the
         obligation guaranteed under this section. Any Sprint Party may bring
         suit against Manager without joining the Other Affiliates or any other
         guarantor. Manager agrees that notice given by a Sprint Party to any
         Other Affiliate under such Other Affiliate's Sprint Agreements or the
         Consent and Agreement constitutes notice to the Manager.

     27. FEDERAL CONTRACTOR COMPLIANCE [ADDM XI, SS.26; REVISED BY THIS
ADDENDUM]. A new section 17.28, the text of which is attached as Exhibit A to
Addendum X, is added and incorporated by this reference. When and to the extent
required by applicable law, Manager will comply with the requirement of this
section 17.28.

     28. FINANCIAL INFORMATION [ADDM XI,SS.27; REVISED BY THIS ADDENDUM]. A new
section 17.29 is added to the Management Agreement:

                           17.29 COPIES OF FINANCIAL INFORMATION. Manager agrees
                  to give Sprint PCS a copy of all financial information it
                  gives the Administrative Agent or any Lender (as such parties
                  are defined in the Consent and Agreement).

                               SERVICES AGREEMENT

     29. NON-EXCLUSIVE SERVICE [ADDM XI,SS.28]. Section 1.3 of the Services
Agreement is amended and restated in its entirety to read as follows:

                  1.3 NON-EXCLUSIVE SERVICES. Nothing contained in this
         agreement confers upon Manager an exclusive right to any of the
         Services. Sprint Spectrum may contract with others to provide expertise
         and services identical or similar to those to be made available or
         provided to Manager under this agreement.

     30. CHANGES TO ARTICLE 2 [ADDM XI,SS.29; REVISED BY THIS ADDENDUM]. Article
2 of the Services Agreement is amended and restated in its entirety to read as
follows:

                                   2. SERVICES

                                       54

                  2.1      SERVICES.

                           2.1.1 SERVICES. Subject to the terms of this
         agreement, through December 31, 2006, Manager will obtain the services
         set forth on Schedule 2.1.1 attached to this agreement ("SERVICES")
         from Sprint Spectrum in accordance with this section 2.1, and Sprint
         Spectrum will provide all or none of the Services. For purposes of
         clarification, as of the Effective Date of Addendum X through December
         31, 2006, Sprint Spectrum is providing all of the Services to Manager
         and Sprint Spectrum will not provide individual Services.

                           The fees charged for the Services and the process for
         setting the fees charged for the Services are set forth in section 3.2.
         Sprint Spectrum may designate additional Services upon at least 60
         days' prior written notice to Manager by providing an amended Schedule
         2.1.1 to Manager in accordance with the provisions of section 9.1.

                           Without Manager's prior written consent, neither
         Sprint Spectrum nor any of its Related Parties will require Manager to
         pay for:

                           (A) any of those additional CCPU Services or CPGA
         Services to the extent that they are the same as or functionally
         equivalent to any service or benefit that Manager currently receives
         from Sprint Spectrum or its Related Parties or Sprint PCS or its
         Related Parties but for which Manager does not pay a separate fee
         immediately after the Effective Date, or

                           (B) any other additional CCPU Services or CPGA
         Services through December 31, 2006. After that date the fee for those
         other additional Services will be included in the fees for CCPU
         Services and CPGA Services.

                           2.1.2 DISCONTINUANCE OF SERVICES. If Sprint Spectrum
         determines to no longer offer a Service, then Sprint Spectrum must

                                    (i) notify Manager in writing a reasonable
                           time before discontinuing the Service, except Sprint
                           will notify Manager at least 9 months before Sprint
                           plans to discontinue a significant Service (e.g.,
                           billing, collection and customer care).

                                    (ii) discontinue the Service to all Other
                           Managers.

                                       55

         If Manager determines within 90 days after receipt of notice of
         discontinuance that it wants to continue to receive the Service, Sprint
         Spectrum will use commercially reasonable efforts to:

                                    (a) help Manager provide the Service itself
                           or find another vendor to provide the Service, and

                                    (b) facilitate Manager's transition to the
                           new Service provider.

                           The fees charged by Sprint Spectrum for the CCPU
         Services and CPGA Services will be reduced by any fees payable by
         Manager to a vendor or new Service provider in respect of discontinued
         CCPU Services and CPGA Services, if (x) Sprint Spectrum procures such
         CCPU Services or CPGA Services from a vendor or a new Service provider
         and bills those items as Settled-Separately Manager Expenses (as
         defined in subsection 3.2.5 of this agreement), or (y) Manager procures
         such CCPU Services or CPGA Services from a vendor or a new provider of
         Services, or (z) Manager self-provisions the Service. No adjustment to
         the fees will be made if Sprint Spectrum discontinues a CCPU Service or
         CPGA Service and Sprint Spectrum does not provide the CCPU Service or
         CPGA Service to end users.

                           2.1.3 PERFORMANCE OF SERVICES. Sprint Spectrum may
         select the method, location and means of providing the Services. If
         Sprint Spectrum wishes to use Manager's facilities to provide the
         Services, Sprint Spectrum must obtain Manager's prior written consent.

                  2.2 THIRD PARTY VENDORS. Some of the Services might be
         provided by third party vendors under arrangements between Sprint
         Spectrum and the third party vendors. In some instances, Manager may
         receive Services from a third party vendor under the same terms and
         conditions that Sprint Spectrum receives those services. In other
         instances, Manager may receive Services under the terms and conditions
         set forth in an agreement between Manager and the third party vendor.

     31. CHANGES TO ARTICLE 3 [ADDM XI,SS.30; REVISED BY THIS ADDENDUM]. (a)
Article 3 of the Services Agreement is amended and restated in its entirety to
read as follows:

                              3. FEES FOR SERVICES

                  3.1 SERVICES. Manager will pay Sprint Spectrum a fee for the
         Services provided by or on behalf of Sprint Spectrum now or in the
         future, subject to Section 2.1.1. Manager may not obtain these Services
         from other sources, except as provided in this agreement.

                                       56

                           If an accounting classification change has the effect
         of moving a Service from a CCPU Service or CPGA Service to a
         Settled-Separately Manager Expense, the fees for the CCPU Services or
         CPGA Services, as applicable, charged by Sprint Spectrum will be
         reduced by the fees payable by Manager for the new Settled-Separately
         Manager Expense.

                  3.2      FEES FOR SERVICES.

                           3.2.1 INITIAL PRICING PERIOD. The fees Manager will
         pay Sprint Spectrum for the CCPU Services and CPGA Services provided to
         Manager by or on behalf of Sprint Spectrum each month from the
         Effective Date of Addendum XII until December 31, 2006 ("INITIAL
         PRICING PERIOD"), will be:

                           (a) for the CCPU Services: $7.00 per subscriber
         multiplied by the Number of Customers in Manager's Service Area, and

                           (b) for the CPGA Services: $23.00 per Gross Customer
         Addition in Manager's Service Area multiplied by the Gross Customer
         Additions in Manager's Service Area.

                           The fees will be paid as set forth in section 10 of
         the Management Agreement.

                           3.2.2 PRICING PROCESS. The parties will reset the
         CCPU and CPGA amounts to be applied in each pricing period after the
         Initial Pricing Period ends. Each subsequent pricing period will last
         three years (if Manager continues to use Sprint Spectrum or a Related
         Party to provide these Services) with, for example, the second pricing
         period beginning on January 1, 2007 and ending on December 31, 2009.

                           The process for resetting the amounts is as follows:

                           (a) Sprint Spectrum will give Manager proposed CCPU
         and CPGA amounts by October 31 of the calendar year before the calendar
         year in which the then current pricing period ends (e.g. if the pricing
         period ends on December 31, 2006 then the amounts have to be presented
         by October 31, 2005). The proposed amounts will be based on the amount
         necessary to recover Sprint PCS' reasonable costs for providing the
         CCPU Services and CPGA Services to Manager and the Other Managers.
         Manager's representative and the Sprint PCS representative will begin
         discussions regarding the proposed CCPU and CPGA amounts within 20 days
         after Manager receives the proposed CCPU and CPGA amounts from Sprint
         Spectrum.

                                       57

                           (b) The fee Manager will pay Sprint Spectrum for the
         CCPU Services provided to Manager by or on behalf of Sprint Spectrum
         each month beginning on January 1, 2007 until December 31, 2008 under
         the pricing process described in this section 3.2.2 will not exceed
         $8.50 per subscriber multiplied by the Number of Customers in Manager's
         Service Area.

                           (c) If the parties do not agree on new CCPU and CPGA
         amounts within 30 days after the discussions begin, then Manager may
         escalate the discussion to the Sprint PCS Chief Financial Officer or
         Sprint Spectrum may escalate the discussion to Manager's Chief
         Executive Officer or Chief Financial Officer.

                           (d) If the parties cannot agree on the new CCPU and
         CPGA amounts through the escalation process within 20 days after the
         escalation process begins, then Manager may either

                                    (i) submit the determination of the CCPU and
                           CPGA amounts to binding arbitration under section
                           14.2 of this agreement, excluding the escalation
                           process set forth in section 14.1 and continue
                           obtaining all of the CCPU Services and CPGA Services
                           from Sprint Spectrum at the CCPU and CPGA amounts the
                           arbitrator determines, or

                                    (ii) procure from a vendor other than Sprint
                           Spectrum or self-provision all of the Services.

                  By December 1, 2006, the parties will agree on a service level
agreement for customer care services and collection services ("CUSTOMER-RELATED
SERVICES") that will apply to Customer-Related Services delivered by Sprint
Spectrum starting on January 1, 2007. If the parties cannot agree on a service
level agreement by December 1, 2006, either party may submit a proposed service
level agreement to binding arbitration under section 14.2 of the Management
Agreement, excluding the escalation process set forth in section 14.1. If the
arbitration concludes after January 1, 2007 the service level agreement, as
agreed upon through the arbitration process, will be effective as of January 1,
2007. The agreement will set forth 5 metrics for Customer-Related Services and
will provide that Sprint Spectrum will use commercially reasonable efforts to
meet the industry averages for those metrics as in effect on December 1, 2006.
The 5 metrics are:

     (a)  Service Grade Rate defined as percentage of calls answered in 60
          seconds or less after the customer enters the call queue.

     (b)  Average Hold Time defined as average time a customer waits to talk to
          a customer service representative once the customer enters the call
          queue.

                                       58

     (c)  Abandoned Call Rate defined as the percentage of calls that disconnect
          prior to talking to a customer service representative after the
          customer enters the call queue.

     (d)  Net Write-Offs Rate defined as monthly write-offs of accounts
          receivable, net of customer deposits, divided by monthly subscriber
          revenue.

     (e)  Past-Due Accounts Receivable Aging Rates defined as percentage of
          accounts receivable greater than 60 days from due date.

                  The service level agreement will provide that Sprint Spectrum
will give Manager a quarterly report on the above metrics. Beginning in 2008,
Manager will have the right to opt out of Sprint Spectrum providing the Customer
Related Services if the average of the metrics reflected in the four quarterly
reports for the prior calendar year indicate that Sprint Spectrum is not in
compliance with any 2 of the 5 metrics. To exercise the opt-out right, Manager
must give its opt-out notice to Sprint Spectrum during the first quarter of any
calendar year that Manager has an opt-out right. Upon receipt of an opt-out
notice, Manager and Sprint Spectrum will use commercially reasonable efforts to
transition the Customer-Related Services to Manager or a third party vendor
within 9 months after the opt-out notice date. Upon the parties' completion of
the transition, the parties will agree to an adjustment to the CCPU Service Fee
being charged by Sprint Spectrum to Manager. If the parties cannot agree to an
adjustment, Manager has the right to submit the determination to binding
arbitration under section 14.2 of the Management Agreement, excluding the
escalation process set forth in section 14.1, and continue obtaining all the
CPGA Services and remaining CCPU services from Sprint Spectrum. Manager will
reimburse Sprint Spectrum for transition and continuing operation costs in
accordance with Section 3.2.4.

                  Manager's opt-out right described above is its sole remedy if
Sprint Spectrum is not in compliance with the metrics; Sprint Spectrum's
non-compliance with the metrics does not constitute a breach of this agreement
or any other agreement between the parties.

                  Manager has the right to propose to Sprint Spectrum that
Manager self-provision or procure from a vendor some, but not all, of the
Services. Sprint Spectrum will discuss the proposal with Manager, but Manager
can only self-provision or procure from a vendor some of the Services if Sprint
Spectrum agrees.

                  Manager will begin paying Sprint Spectrum under the CCPU and
CPGA amounts that Sprint Spectrum presents for discussion at the beginning of
the new pricing period until the date on which the parties agree or until the
arbitrator determines the new CCPU and CPGA amounts, whichever occurs first.
Within 30 days after the amounts are determined (either by agreement or by
arbitration), Sprint PCS will recalculate the fees from the beginning of the new
pricing period and give notice to Manager of what the fees are and the amount of
any adjusting payments required. If Sprint PCS owes Manager a

                                       59

refund of fees already paid, Sprint PCS may pay the amount to Manager or Sprint
PCS, in its sole discretion, may credit the amount of the refund against any
amounts Manager then owes to Sprint PCS. If Sprint PCS chooses to pay the
refund, it will make the payment at the time it sends the notice to Manager; If
Sprint PCS chooses to credit the refund, it will in the notice indicate the
amounts owing to which the credit will be applied. If Manager owes Sprint PCS
additional fees Manager will pay those fees to Sprint PCS within 10 days after
receipt of the notice.

                           3.2.3 SPRINT SPECTRUM FIRST RIGHT OF REFUSAL. Manager
         must give Sprint Spectrum written notice of Manager's decision to
         procure the Services from a third party vendor the Services at least
         120 days before the end of the Initial Pricing Period or any subsequent
         three-year pricing period and provide the third party vendor terms to
         Sprint Spectrum. Sprint Spectrum will have 30 days from the date it
         receives the third party vendor's terms to decide if it will provide
         those Services to Manager under those terms.

                           Manager must agree to receive the Services from
         Sprint Spectrum if Sprint Spectrum gives notice to Manager that it will
         provide the Services to Manager on the third party vendor terms. If
         Sprint Spectrum does not exercise its first right of refusal, Manager
         must sign the agreement with the third party vendor on the same terms
         and conditions as presented to Sprint Spectrum within 10 Business Days
         after Sprint Spectrum notifies Manager of its decision not to exercise
         the first right of refusal or the expiration of the 30-day period,
         whichever occurs first. The procedure set forth in this section 3.2.3
         will begin again if Manager does not sign the agreement with the third
         party vendor as required in the preceding sentence.

                           3.2.4 TRANSITION AND CONTINUING OPERATING COSTS.
         Sprint Spectrum will cooperate with Manager and work diligently and in
         good faith to implement the transition to another service provider
         (including Manager, if applicable), in a reasonably efficient and
         expeditious manner.

                           Manager will pay for all reasonable out-of-pocket
         costs that Sprint Spectrum and its Related Parties actually incur to
         (i) transfer any Service(s) provided to Manager to a third party vendor
         or to enable Manager to self-provide any Service(s), and (ii) operate
         and maintain systems, processes, licenses and equipment to support
         those Services. Sprint Spectrum will bill Manager monthly for these
         costs.

                           3.2.5 SETTLED-SEPARATELY MANAGER EXPENSES. Manager
         will pay to or reimburse Sprint Spectrum for any amounts that Sprint
         Spectrum or its Related Parties pays for Settled-Separately Manager
         Expenses. "SETTLED-SEPARATELY MANAGER EXPENSES" means those items the
         parties choose to settle separately between themselves (e.g. accessory

                                       60

         margins, reciprocal retail store cost recovery) that are listed in
         sections C and D of Schedule 2.1.1.

                           Sprint Spectrum will give Manager at least 60 days'
         prior written notice by providing an amended Schedule 2.1.1 to Manager
         in accordance with the provisions of section 9.1 of any additional
         Services added to sections C and D of Schedule 2.1.1, but no additional
         service may be added to the extent it is the same as, or functionally
         equivalent to, either:

                                    (a) any service that Sprint Spectrum or any
                  of its Related Parties currently provides to Manager as a CCPU
                  Service or a CPGA Service (unless the fees payable by Manager
                  to Sprint Spectrum hereunder are correspondingly reduced) or

                                    (b) any service or benefit that Manager
                  currently receives from Sprint Spectrum or its Related Parties
                  but for which Manager does not pay a separate fee before the
                  Effective Date.

                  For each Settled-Separately Manager Expense, Sprint Spectrum
         will provide sufficient detail to enable Manager to determine how the
         expense was calculated, including the unit of measurement (e.g., per
         subscriber per month or per call) and the record of the occurrences
         generating the expense (e.g., the number of calls attributable to the
         expense). If an expense is not reasonably subject to occurrence level
         detail, Sprint Spectrum will provide reasonable detail on the process
         used to calculate the fee and the process must be reasonable. A detail
         or process is reasonable if it is substantially in the form as is
         customarily used in the wireless industry. The Settled-Separately
         Manager Expenses will be paid as set forth in section 10 of the
         Management Agreement. Sprint Spectrum and its Related Parties may
         arrange for Manager to pay any of the Settled-Separately Manager
         Expenses directly to the vendor after giving Manager reasonable notice.

                           Unless Manager specifically agrees otherwise, any
         Settled-Separately Manager Expense that Sprint Spectrum or any of its
         Related Parties is entitled to charge or pass through to Manager under
         this agreement or the Management Agreement will reflect solely
         out-of-pocket costs and expenses that Sprint Spectrum or its Related
         Parties actually incur, will be usage-based or directly related to
         revenue-generating products and services, and will not include any
         allocation of Sprint PCS' or its Related Parties' internal costs or
         expenses (including, but not limited to, allocations of general and
         administrative expenses or allocations of employee compensation or
         related expenses). For clarity, Sprint Spectrum's or its Related
         Parties' out-of-pocket costs for handset and

                                       61

         accessory inventory consist of actual inventory invoice costs less any
         volume incentive rebates and price protection credits that Sprint
         Spectrum or its Related Parties receive from a vendor.

                  3.3 LATE PAYMENTS. Any payment due under this section 3 that
         Manager fails to pay to Sprint Spectrum in accordance with this
         agreement will bear interest at the Default Rate beginning (and
         including) the 6th day after the due date stated on the invoice until
         (and including) the date on which the payment is made.

                  3.4 TAXES. Manager will pay or reimburse Sprint Spectrum for
         any sales, use, gross receipts or similar tax, administrative fee,
         telecommunications fee or surcharge for taxes or fees that a
         governmental authority levies on the fees and charges that Manager pays
         to Sprint Spectrum or a Related Party.

     32. AUDIT [ADDM XI,SS.31]. Section 5.1.2 of the Services Agreement is
amended and restated in its entirety to read as follows:

                  5.1.2 AUDITS. On reasonable advance notice by one party, the
         other party must provide its independent or internal auditors access to
         its appropriate financial and operating records, including, without
         limitation, vendor and distribution agreements, for purposes of
         auditing the amount of fees (including the appropriateness of items
         included in Settled-Separately Manager Expenses), costs, expenses
         (including operating metrics referred to in this agreement and the
         Services Agreement relating to or used in the determination of Inter
         Service Area Fees, Reseller Customer Fees, CCPU Services or CPGA
         Services) or other charges payable in connection with the Service Area
         for the period audited. The party that requested the audit may decide
         if the audit is conducted by the other party's independent or internal
         auditors. Manager and Sprint Spectrum may each request no more than one
         audit per year.

                           (a) If the audit shows that Sprint Spectrum was
                  underpaid then, unless the amount is contested, Manager will
                  pay to Sprint Spectrum the amount of the underpayment within
                  10 Business Days after Sprint Spectrum gives Manager written
                  notice of the underpayment determination.

                           (b) If the audit determines that Sprint Spectrum was
                  overpaid then, unless the amount is contested, Sprint Spectrum
                  will pay to Manager the amount of the overpayment within 10
                  Business Days after Manager gives Sprint Spectrum written
                  notice of the overpayment determination.

                                       62

                  The auditing party will pay all costs and expenses related to
         the audit unless the amount owed to the audited party is reduced by
         more than 10% or the amount owed by the audited party is increased by
         more than 10%, in which case the audited party will pay the costs and
         expenses related to the audit.

                  If either party disputes the auditor's conclusion then the
         dispute will be submitted to binding arbitration in accordance with
         section 14.2 of the Management Agreement, excluding the escalation
         process set forth in section 14.1 of the Management Agreement.

                  Sprint PCS will provide a Type II Report to Manager annually.
         If Manager, on the advice of its independent auditors or its legal
         counsel, determines that a statute, regulation, rule, judicial decision
         or interpretation, or audit or accounting rule, policy or literature
         published by the accounting or auditing profession or other
         authoritative rule making body (such as the Securities and Exchange
         Commission, the Public Company Accounting Oversight Board or the
         Financial Accounting Standards Board) requires additional assurances
         beyond SAS 70, then Sprint Spectrum will cooperate with Manager to
         provide the additional assurances. Sprint Spectrum's independent
         auditors will prepare any Type II Report or Manager Management Report
         provided under this section 5.1.2 and will provide an opinion on the
         controls placed in operation and tests of operating effectiveness of
         those controls in effect at Sprint PCS over Manager Management
         Processes.

     33. NOTICES [ADDM XI,SS.32]. Section 9.1 of the Services Agreement is
amended and restated in its entirety to read as follows:

                  9.1 NOTICES. Any notice, payment, invoice, demand or
         communication required or permitted to be given by any provision of
         this agreement must be in writing and mailed (certified or registered
         mail, postage prepaid, return receipt requested), sent by hand or
         overnight courier, charges prepaid or sent by facsimile or email (in
         either instance with acknowledgement or read receipt received), and
         addressed as described in section 17.1(b) of the Management Agreement,
         or to any other address or number as the person or entity may from time
         to time specify by written notice to the other parties.

                  The subject line of any email notice that purports to add any
         additional service to Schedule 2.1.1 must read "Additional Service to
         Schedule 2.1.1". The new Schedule 2.1.1 must also be attached to the
         email, and notice will also be provided to those individuals listed for
         notices for Manager regarding Program Requirement Changes set forth in
         section 17.1(b) of the Management Agreement.

                                       63

                  Any notice, demand or communication intended to be notice of a
         breach of an agreement or notice of an Event of Termination must
         clearly indicate that intent, state the section(s) of the agreements
         allegedly breached, and in addition to any other form of notice it must
         be mailed or sent by overnight courier in the manner described in the
         first paragraph of this section 9.1.

                  Manager will promptly give Sprint Spectrum a copy of any
         notice Manager receives from the Administrative Agent or any Lender,
         and a copy of any notice Manager gives to the Administrative Agent or
         any Lender. Sprint Spectrum will promptly give Manager a copy of any
         notice that Sprint Spectrum receives from the Administrative Agent or
         any Lender and a copy of any notice that Sprint Spectrum gives to the
         Administrative Agent or any Lender.

                  All notices and other communications given to a party in
         accordance with the provisions of this agreement will be deemed to have
         been given when received.

     34. ENTIRE AGREEMENT; AMENDMENTS [ADDM XI,SS.33]. Section 9.6 of the
Services Agreement is amended and restated in its entirety to read as follows:

                  9.6 ENTIRE AGREEMENT; AMENDMENTS. The provisions of this
         agreement and the Management Agreement including the exhibits to those
         agreements set forth the entire agreement and understanding between the
         parties as to the subject matter of this agreement and supersede all
         prior agreements, oral or written, and other communications between the
         parties relating to the subject matter of this agreement. Except for
         Sprint Spectrum's right to add additional Services to Schedule 2.1.1
         subject to the provisions of section 2.1.1 and section 3.2.5, this
         agreement may be modified or amended only by a written amendment signed
         by the persons or entities authorized to bind each party.

     35. FORCE MAJEURE [ADDM XI,SS.34]. The second paragraph of section 9.8 of
the Services Agreement is amended and restated in its entirety to read as
follows: Neither Manager nor Sprint Spectrum, as the case may be, is in breach
of any covenant in this agreement and no Event of Termination will occur as a
result of the failure of such party to comply with any covenant, if the party's
non-compliance with the covenant results primarily from:

                         (i) any FCC order or any other injunction that any
                    governmental authority issues that impedes the party's
                    ability to comply with the covenant,

                         (ii) the failure of any governmental authority to grant
                    any consent, approval, waiver or authorization or any

                                       64

                    delay on the part of any governmental authority in granting
                    any consent, approval, waiver or authorization,

                         (iii) the failure of any vendor to deliver in a timely
                    manner any equipment or service, or

                         (iv) any act of God, act of war or insurrection, riot,
                    fire, accident, explosion, labor unrest, strike, civil
                    unrest, work stoppage, condemnation or any similar cause or
                    event not reasonably within the control of the party.

     36. GOVERNING LAW, JURISDICTION AND CONSENT TO SERVICE OF PROCESS [ADDM
XI,SS.35]. Section 9.11 of the Services Agreement is replaced with the following
language:

                  9.11     GOVERNING LAW, JURISDICTION AND SERVICE OF PROCESS.

                           9.11.1 GOVERNING LAW. The internal laws of the State
                  of Kansas (without regard to principles of conflicts of law)
                  govern the validity of this agreement, the construction of its
                  terms, and the interpretation of the rights and duties of the
                  parties.

                           9.11.2   JURISDICTION; CONSENT TO SERVICE OF PROCESS.

                           (a) Each party hereby irrevocably and unconditionally
                  submits, for itself and its property, to the nonexclusive
                  jurisdiction of any Kansas State court sitting in the County
                  of Johnson or any Federal court of the United States of
                  America sitting in the District of Kansas, and any appellate
                  court from any such court, in any suit action or proceeding
                  arising out of or relating to this agreement, or for
                  recognition or enforcement of any judgment, and each party
                  hereby irrevocably and unconditionally agrees that all claims
                  in respect of any such suit, action or proceeding may be heard
                  and determined in such Kansas State Court or, to the extent
                  permitted by law, in such Federal court.

                           (b) Each party hereby irrevocably and unconditionally
                  waives, to the fullest extent it may legally do so, any
                  objection which it may now or hereafter have to the laying of
                  venue of any suit, action or proceeding arising out of or
                  relating to this agreement in Kansas State court sitting in
                  the County of Johnson or any Federal court sitting in the
                  District of Kansas. Each party hereby irrevocably waives, to
                  the fullest extent permitted by law, the defense of an
                  inconvenient forum to the maintenance of such suit, action or
                  proceeding in any such court and further waives the right to
                  object, with respect to such suit, action or proceeding, that
                  such court does not have jurisdiction over such party.

                                       65

                           (c) Each party irrevocably consents to service of
                  process in the manner provided for the giving of notices
                  pursuant to this agreement, provided that such service shall
                  be deemed to have been given only when actually received by
                  such party. Nothing in this agreement shall affect the right
                  of a party to serve process in another manner permitted by
                  law.

                          TRADEMARK LICENSE AGREEMENTS

     37. NOTICES [ADDM XI,SS.36]. Section 15.1 of each of the Trademark License
Agreements is amended and restated in its entirety to read as follows:

                  Section 15.1. Notices. Any notice, payment, invoice, demand or
         communication required or permitted to be given by any provision of
         this agreement must be in writing and mailed (certified or registered
         mail, postage prepaid, return receipt requested), sent by hand or
         overnight courier, or sent by facsimile (with acknowledgment received),
         charges prepaid and addressed as described in section 17.1(b) of the
         Management Agreement, or to any other address or number as the person
         or entity may from time to time specify by written notice to the other
         parties.

                  Any notice, demand or communication intended to be notice of a
         breach of an agreement or notice of an Event of Termination must
         clearly indicate that intent, state the section(s) of the agreements
         allegedly breached, and be mailed or sent by overnight courier in the
         manner described in the preceding paragraph.

                  Licensee will promptly give Licensor a copy of any notice
         Licensee receives from any Administrative Agent or any Lender, and a
         copy of any notice Licensee gives to any Administrative Agent or any
         Lender. Licensor will promptly give Licensee a copy of any notice that
         Licensor receives from the Administrative Agent or any Lender and a
         copy of any notice that Licensor gives to the Administrative Agent or
         any Lender.

                  All notices and other communications given to a party in
         accordance with the provisions of this agreement will be deemed to have
         been given when received.

     38. GOVERNING LAW [ADDM XI,SS.37]. Section 15.8 of each of the Trademark
License Agreements is replaced by the following language:

          15.8 Governing Law. The internal laws of the State of Kansas (without
     regard to principles of conflicts of law) govern the validity of this
     agreement, the construction of its terms, and the interpretation of the
     rights and duties of the parties.

                                       66

     39. JURISDICTION [ADDM XI,SS.38]. Section 15.13 of each of the Trademark
License Agreements is replaced by the following language:

                  15.13    Jurisdiction; Consent to Service of Process.

                           (a) Each party hereby irrevocably and unconditionally
         submits, for itself and its property, to the nonexclusive jurisdiction
         of any Kansas State court sitting in the County of Johnson or any
         Federal court of the United States of America sitting in the District
         of Kansas, and any appellate court from any such court, in any suit
         action or proceeding arising out of or relating to this agreement, or
         for recognition or enforcement of any judgment, and each party hereby
         irrevocably and unconditionally agrees that all claims in respect of
         any such suit, action or proceeding may be heard and determined in such
         Kansas State Court or, to the extent permitted by law, in such Federal
         court.

                           (b) Each party hereby irrevocably and unconditionally
         waives, to the fullest extent it may legally do so, any objection which
         it may now or hereafter have to the laying of venue of any suit, action
         or proceeding arising out of or relating to this agreement in Kansas
         State court sitting in the County of Johnson or any Federal court
         sitting in the District of Kansas. Each party hereby irrevocably
         waives, to the fullest extent permitted by law, the defense of an
         inconvenient forum to the maintenance of such suit, action or
         proceeding in any such court and further waives the right to object,
         with respect to such suit, action or proceeding, that such court does
         not have jurisdiction over such party.

                           (c) Each party irrevocably consents to service of
         process in the manner provided for the giving of notices pursuant to
         this agreement, provided that such service shall be deemed to have been
         given only when actually received by such party. Nothing in this
         agreement shall affect the right of a party to serve process in another
         manner permitted by law.

                             SCHEDULE OF DEFINITIONS

     40. DELETED DEFINITION [ADDM XI,SS.39]. The definition of "Available
Services" is deleted.

     41. ADDITIONAL, AMENDED OR SUPPLEMENTED DEFINITIONS [ADDM XI,SS.40; REVISED
BY THIS ADDENDUM]. The following are new or amended definitions, unless
otherwise indicated:

          "ADDITIONAL INTEREST" [ADDM VII, SS.1] has the meaning set forth in
     section 2.1 of the Management Agreement.

          "ALAMOSA MANAGERS" means Manager and the Other Managers controlled by
     Alamosa Holdings, Inc.

                                       67

          "ALLOCABLE SOFTWARE FEE" has the meaning set forth in section 1.3.4(e)
     of the Management Agreement.

          "ALLOCATED WRITE-OFFS" has the meaning set forth in section 10.3.4 of
     the Management Agreement.

          "A MARKETS" [ADDM VII, SS.1] has the meaning set forth in section 2.1
     of the Management Agreement.

          "AMOUNT BILLED (NET OF CUSTOMER CREDITS)" has the meaning set forth in
     section 10.3.3 of the Management Agreement.

          "ASSESSMENT DATE" [ADDM VII, SS.1] has the meaning set forth in
     section 2.1 of the Management Agreement.

          "AVAILABLE EBV" [ADDM VII, SS.1] has the meaning set forth in section
     2.1 of the Management Agreement.

          "AWAY NETWORK" means:

                    (i) any portion of the Sprint PCS Network other than
               Manager's Service Area Network, in the case of Customers with an
               NPA-NXX assigned to the Service Area (or any other such
               designation in accordance with section 17.17 of the Management
               Agreement), and

                    (ii) Manager's Service Area Network, in the case of
               Customers with an NPA-NXX assigned to an area outside the Service
               Area (or any other such designation in accordance with section
               17.17 of the Management Agreement).

          "BILLED COMPONENT(S)" has the meaning set forth in section 10.3.2 of
     the Management Agreement.

          "BILLED MONTH" has the meaning set forth in section 10.2.1 of the
     Management Agreement.

          "BILLED REVENUE" has the meaning set forth in section 10.2.1 of the
     Management Agreement.

          "B MARKET" [ADDM VII, SS.1] has the meaning set forth in section 2.1
     of the Management Agreement.

          "CCPU SERVICES" means those Services listed in section A of Schedule
     2.1.1 to the Services Agreement.

                                       68

          "CHANGE OF CONTROL TRANSACTION" [ADDM VII, SS.1] has the meaning set
     forth in section 2.1 of the Management Agreement.

          "CHIEF FINANCIAL OFFICER OF SPRINT PCS", "SPRINT PCS CHIEF FINANCIAL
     OFFICER" and other references to the Chief Financial Officer of Sprint PCS
     mean the Senior Vice President - Finance of Sprint Corporation designated
     to serve as the chief financial officer of Sprint PCS or if none, the
     individual serving in that capacity.

          "CONTRACTUAL LAUNCH DATE" [ADDM VII, SS.1] has the meaning set forth
     in section 2.1 of the Management Agreement.

          "CPGA SERVICES" means those Services listed in section B of Schedule
     2.1.1 to the Services Agreement.

          "CSA" has the meaning set forth in section 10.2.1 of the Management
     Agreement.

          "CUSTOMER" means any customer, except Reseller Customers or customers
     of third parties for which Manager provides solely switching services, who
     purchases Sprint PCS Products and Services, regardless of where their
     NPA-NXX is assigned.

          "CUSTOMER CREDITS" has the meaning set forth in section 10.2.1 of the
     Management Agreement.

          "CUSTOMER EQUIPMENT CHARGES" has the meaning set forth in section
     10.3.2.5 of the Management Agreement.

          "CUSTOMER EQUIPMENT CREDITS" has the meaning set forth in section
     10.3.2.2 of the Management Agreement.

          "CUSTOMER-RELATED SERVICES" has the meaning set forth in section 3.2.2
     of the Services Agreement.

          "CUSTOMER TAXES" means the amounts that Sprint PCS bills to Manager
     Accounts for taxes, including, without limitation, federal, state, and
     local sales, use, gross and excise tax.

          "EFFECTIVE DATE" has the meaning set forth in the preamble of this
     Addendum.

          "ENTERPRISE VALUE" means either:

               (i) if the entity has issued publicly-traded equity, the combined
          book value of the entity's outstanding debt and preferred stock less
          cash plus the fair market value of each class of its publicly-traded
          equity other

                                       69

          than any publicly-traded preferred stock. For the purposes of this
          definition, the fair market value of a class of the entity's
          publicly-traded equity (other than publicly-traded preferred stock) is
          equal to the product of:

                    (A) the number of issued and outstanding shares of the class
               of publicly-traded equity as of the date of determination, times

                    (B) the applicable average closing price (or average closing
               bid, if traded on the over-the-counter market) per share of the
               class of publicly-traded equity over the 21 consecutive trading
               days immediately preceding the date of determination; or

               (ii) if the entity does not have issued publicly-traded equity,
          the combined book value of the entity's outstanding debt and equity
          less cash.

          "E911 PHASE I SURCHARGES" means all costs related to Phase I E911
     functionality.

          "E911 PHASE II SURCHARGES" has the meaning set forth in section
     10.3.2.6 of the Management Agreement.

          "ETC" has the meaning set forth in section 10.6.1 of the Management
     Agreement.

          "FEE BASED ON BILLED REVENUE" has the meaning set forth in section
     10.2.1 of the Management Agreement.

          "FULL BUILDOUT COVERAGE" [ADDM VII, SS.1] has the meaning set forth in
     section 2.1 of the Management Agreement.

          "FULL BUILDOUT DATE" [ADDM VII, SS.1] has the meaning set forth in
     section 2.1 of the Management Agreement.

          "GROSS CUSTOMER ADDITIONS IN MANAGER'S SERVICE AREA" means the average
     number of Customers activated (without taking into consideration the number
     of Customers lost) during the previous month with an NPA-NXX assigned to
     the Service Area as reported in Sprint PCS' most recent monthly KPI report.

          "HARD LAUNCH" [ADDM VII, SS.1] has the meaning set forth in section
     2.1 of the Management Agreement.

          "INITIAL 3G DATA FEE PERIOD" has the meaning set forth in section
     10.4.1.3(a) of the Management Agreement.

                                       70

          "INITIAL PRICING PERIOD" has the meaning set forth in section 3.2.1 of
     the Services Agreement.

          "INTER SERVICE AREA FEE" has the meaning set forth in section 4.3 of
     the Management Agreement.

          "INVESTMENT BANKER" has the meaning set forth in section 9.3.2 of the
     Management Agreement.

          "MANAGER ACCOUNTS" has the meaning set forth in section 10.2.1 of the
     Management Agreement.

          "MANAGER MANAGEMENT PROCESS" has the meaning set forth in section
     12.1.2 of the Management Agreement.

          "MANAGER MANAGEMENT REPORT" has the meaning set forth in section
     12.1.2 of the Management Agreement.

          "MANAGER SHARES" [ADDM VII, SS.1] has the meaning set forth in section
     2.1 of the Management Agreement.

          "MINIMUM LAUNCH FOOTPRINT" [ADDM VII, SS.1] has the meaning set forth
     in section 2.1 of the Management Agreement.

          "NET BILLED REVENUE" has the meaning set forth in section 10.2.1 of
     the Management Agreement.

          "NEW COVERAGE" means the build-out in the Service Area that is in
     addition to the build-out required under the then-existing Build-out Plan,
     which build-out Sprint PCS or Manager decides should be built-out.

          "90-DAY THRESHOLD" [ADDM VII, SS.1] has the meaning set forth in
     section 2.1 of the Management Agreement.

          "NPA-NXX" means NPA-NXX or an equivalent identifier, such as a network
     access identifier (NAI).

          "NUMBER OF CUSTOMERS IN MANAGER'S SERVICE AREA" means the average
     number of Customers with NPA-NXXs assigned to the Service Area reported in
     Sprint PCS' most recent monthly KPI report.

          "180-DAY THRESHOLD" [ADDM VII, SS.1] has the meaning set forth in
     section 2.1 of the Management Agreement.

          "OTHER AFFILIATES" [ADDM VIII, SS.2 AND ADDM IX, SS.2] has the meaning
     set forth in section 17.26 of the Management Agreement.

                                       71

          "OUTBOUND ROAMING FEES" means the amounts that Sprint PCS or its
     Related Parties bills to Manager Accounts for calls placed on a non-Sprint
     PCS Network.

          "OVERALL CHANGES" has the meaning set forth in section 1.10(a) of the
     Management Agreement.

          "PAYMENT DATE" [ADDM VII, SS.1] has the meaning set forth in section
     2.1 of the Management Agreement.

          "PENALTY DATE" [ADDM VII, SS.1] has the meaning set forth in section
     2.1 of the Management Agreement.

          "PRIORITY FACTOR" [ADDM VII, SS.1] has the meaning set forth in
     section 2.1 of the Management Agreement.

          "PROGRAM REQUIREMENT CHANGE" has the meaning set forth in section
     9.3.1 of the Management Agreement.

          "PRORATION FACTOR" [ADDM VII, SS.1] has the meaning set forth in
     section 2.1 of the Management Agreement.

          "REQUIRED RESALE PARTICIPATION PERIOD" means the period from April 1,
     2004, until the later of (1) December 31, 2006 and (2) the expiration of
     any three-year period beginning after December 31, 2006, for which Sprint
     PCS and Manager have reached agreement in accordance with section
     10.4.1.1(c) with respect to the terms, fees and conditions applicable to
     Manager's participation in resale arrangements entered into by Sprint PCS.

          "RESELLER CUSTOMER" means customers of companies or organizations with
     a Private Label PCS Services or similar resale agreement with Sprint PCS or
     Manager.

          "RESELLER CUSTOMER FEES" has the meaning set forth in section 10.4.1.1
     of the Management Agreement.

          "SCCLP" has the meaning set forth in section 3.4.2(b) of the
     Management Agreement.

          "SELECTED SERVICES" means Services.

          "SERVICE AREA NETWORK" means the network that is directly required for
     the provision of telecommunications services to Customers and is managed by
     Manager under the Management Agreement in the Service Area under the
     License.

                                       72

          "SERVICES" has the meaning set forth in section 2.1.1 of the Services
     Agreement.

          "SETTLED-SEPARATELY MANAGER EXPENSES" has the meaning set forth in
     section 3.2.5 of the Services Agreement.

          "SOFTWARE" means only that software and software features currently
     existing or developed in the future that are used in connection with
     telecommunications equipment owned or leased by Manager in Manager's
     provisioning of wireless services in the Service Area and includes, without
     limitation, software maintenance, updates, improvements, upgrades and
     modifications. "Software" expressly excludes:

                    (i) software "rights to use" licenses to the extent paid to
               the licensor directly by Manager, and

                    (ii) software operating Sprint PCS' national platforms,
               billing system platforms, customer service platforms and like
               applications.

          "SOFTWARE FEES" means costs associated (including applicable license
     fees) with procuring software, software maintenance, software upgrades and
     other software costs needed to provide uniform and consistent operation of
     the wireless systems within the Sprint PCS Network.

          "SPRINT PCS" means any or all of the following Related Parties who are
     License holders or signatories to the Management Agreement: Sprint Spectrum
     L.P., a Delaware limited partnership, WirelessCo, L.P., a Delaware limited
     partnership, SprintCom, Inc., a Kansas corporation, PhillieCo Partners I,
     L.P., a Delaware limited partnership, PhillieCo, L.P., a Delaware limited
     partnership, Sprint Telephony PCS, L.P., a Delaware limited partnership,
     Sprint PCS License, L.L.C., a Delaware limited liability company, American
     PCS Communications, LLC, a Delaware limited liability company, and APC PCS,
     LLC, a Delaware limited liability company. Any reference in the Management
     Agreement or Services Agreement to Cox Communications PCS, L.P., a Delaware
     limited partnership, or Cox PCS License, L.L.C., a Delaware limited
     liability company, is changed to Sprint Telephony PCS, L.P., a Delaware
     limited partnership, or Sprint PCS License, L.L.C., a Delaware limited
     liability company, respectively, to reflect name changes filed with the
     Delaware Secretary of State in 2002.

          "SPRINT PCS ARPU" means the average revenue per user publicly
     announced by Sprint PCS or its Related Parties for the most recent calendar
     year. Sprint PCS ARPU is generally calculated by dividing wireless service
     revenues by average wireless subscribers.

                                       73

          "SPRINT PCS RETAIL YIELD FOR VOICE AND 2G DATA USAGE" means the
     quotient calculated by dividing (a) Sprint PCS ARPU less the 3G data
     component in the Sprint PCS ARPU by (b) the reported minutes of use per
     subscriber for the calendar year for which the Sprint PCS ARPU was
     calculated.

          "SPRINT PCS RETAIL YIELD FOR 3G DATA USAGE" means the quotient
     calculated by dividing (a) the 3G data component in the Sprint PCS ARPU by
     (b) the kilobytes of use for 3G data usage per subscriber for the calendar
     year for which the Sprint PCS ARPU was calculated.

          "SUBSIDY FUNDS" has the meaning set forth in section 10.6.1 of the
     Management Agreement.

          "3M-POPS MANAGER" means any Other Manager whose ultimate parent entity
     (as defined by the Hart-Scott-Rodino Antitrust Improvements Act of 1976)
     controls entities with 3 million or more covered pops.

          "TOTAL SOFTWARE COST" means the amount paid by Sprint PCS to the
     vendor directly associated with the Software used by Sprint PCS, Manager
     and Other Managers (if and to the extent Manager and the Other Managers
     have agreed to pay any Allocable Software Fee) for the Sprint PCS Network
     for which Manager is not obligated to pay the Software vendor directly, net
     of any discounts or rebates and excluding any mark-up by Sprint PCS for
     administrative or other fees.

          "TRANSITION DATE" has the meaning set forth in section 10.12.3 of the
     Management Agreement.

          "TYPE II REPORT" has the meaning set forth in section 12.1.2 of the
     Management Agreement.

          "ULTIMATE PARENT" has the meaning set forth in the Hart-Scott-Rodino
     Antitrust Improvements Act of 1976.

          "USF CHARGES" has the meaning set forth in section 10.3.2.7 of the
     Management Agreement.

          "VENDOR SOFTWARE" has the meaning set forth in section 1.3.4(b) of the
     Management Agreement.

          "WIRELESS MOBILITY COMMUNICATIONS NETWORK" [ADDM VIII, SS.8] means a
     radio communications system operating in the 1900 MHz range under the rules
     designated as subpart E of Part 24 of the FCC's rules.

          "WLNP SURCHARGES" has the meaning set forth in section 10.2.4 of the
     Management Agreement.

                                       74

          "WRITE-OFFS" has the meaning set forth in section 10.3.1 of the
     Management Agreement.

B.   CROSS-REFERENCES TO OTHER PARAGRAPHS IN PREVIOUS ADDENDA.

                  Listed below are those paragraphs in the previous addenda that
are interpretations or applications of the Management Agreement, the Services
Agreement, the Trademark License Agreements or the Schedule of Definitions that
are not listed above. These serve as cross-references to facilitate finding
provisions in the previous addenda. The number shown at the beginning of each
item is the paragraph reference in the designated Addendum.

         Addendum I

                  1.       Potential Expansion of Service Area

         Addendum II

                  1.       Modification of Build-Out Plan
                  2.       Simultaneous Execution of Asset Sale Agreement
                  3.       Designation of Selected Services
                  4.       Completion of New BTA Builds
                  5.       Sprint LTD Coverage

         Addendum III

                  1.       Modification of Build-Out Plan
                  2.       Simultaneous Execution of Asset Sale Agreement
                  3.       Backhaul and Interconnection
                  4.       Designation of Selected Services
                  5.       Columbia, MO and Jefferson City, MO Build-Out
                  6.       Completion of Asset Transfer
                  7.       Right of Sprint PCS to Repurchase Transferred Assets
                  8.       Sprint LTD Coverage

         Addendum IV

                  1.       Modification of Build-Out Plan
                  2.       Backhaul and Interconnection
                  3.       Consent and Agreement ("C&A")-Related: Use of Loan
                           Proceeds
                  4.       C&A-Related: C&A Not Assignable
                  6.       Sale of Operating Assets or License
                  7.       C&A-Related: No Default under Credit Documents or
                           Sprint Agreements

                                       75

                  8.       Counterparts

         Addendum V

                  1.       Modification of Build-Out Plan
                  2.       Backhaul and Interconnection
                  3.       Designation of Selected Services

         Addendum VI

                  2.       Reaffirmation of Sprint Agreements
                  3.       Counterparts

         Addendum VII

                  2.       Reaffirmation of Sprint Agreements
                  3.       Counterparts

         Addendum VIII

                  1.       C&A-Related: Use of Loan Proceeds
                  6.       Expiration of Limited Remedies Period
                  7.       Revised Financing Plan
                  10.      Reaffirmation of Sprint Agreements
                  11.      Counterparts

         Addendum IX

                  1.       C&A-Related: Use of Loan Proceeds
                  3.       Financing Plan
                  4.       Reaffirmation of Sprint Agreements
                  5.       Counterparts

         Addendum X (initial simplified pricing addendum)
         ----------

                   None (all are superseded by Addendum XI).

         Addendum XI

                   None (all are superseded by this Addendum).

                                       76

C.   OTHER PROVISIONS.

     1. MANAGER AND SPRINT PCS' REPRESENTATIONS. Manager and Sprint PCS each
represents and warrants that its respective execution, delivery and performance
of its obligations described in this Addendum have been duly authorized by
proper action of its governing body and do not and will not violate any material
agreements to which it is a party. Each of Manager and Sprint PCS also
represents and warrants that there are no legal or other claims, actions,
counterclaims, proceedings or suits, at law or in arbitration or equity, pending
or, to its knowledge, threatened against it, its Related Parties, officers or
directors that question or may affect the validity of this Addendum, the
execution and performance of the transactions contemplated by this Addendum or
that party's right or obligation to consummate the transactions contemplated by
this Addendum.

     2. REAFFIRMATION OF SPRINT AGREEMENTS. Each of the undersigned reaffirms in
their entirety the Management Agreement, the Services Agreement and the
Trademark License Agreements, together with their respective rights and
obligations under those agreements.

     3. COUNTERPARTS. This Addendum may be executed in one or more counterparts,
including facsimile counterparts, and each counterpart will have the same force
and effect as an original instrument as if the parties to the aggregate
counterparts had signed the same instrument.

            [THE REMAINDER OF THIS PAGE IS LEFT BLANK INTENTIONALLY.]

                                       77

                  The parties have caused this Addendum XII to be executed as of
the date first above written.

                              SPRINT SPECTRUM L.P.

                              By: /s/ Steve Nielsen
                                 ---------------------------------------------
                                  Name:  Steve Nielsen
                                  Title: SVP Finance

                              WIRELESSCO, L.P.

                              By: /s/ Steve Nielsen
                                 ---------------------------------------------
                                  Name:  Steve Nielsen
                                  Title: SVP Finance

                              SPRINT COMMUNICATIONS COMPANY L.P.

                              By: /s/ Tom Murphy
                                 ---------------------------------------------
                                  Name: Tom Murphy
                                  Title: Senior Vice President - Corporate
                                            Communication & Brand Management

                              ALAMOSA MISSOURI, LLC
                              a Missouri limited liability company

                              By:  ALAMOSA HOLDINGS, LLC
                                   a Delaware limited liability company,
                                   as the sole equity holder

                                   By: /s/ David E. Sharbutt
                                      ----------------------------------------
                                      David E. Sharbutt
                                      President

                                       78

                                                                      SCHEDULE 1

Program Requirement 3.5.2 dated August 13, 2002, and labeled "Exhibit 3.5.2
Program Requirement for Voluntary Resale of Products and Services By Voluntary
Resellers Under the Private Label Solutions Program" is amended by replacing the
title, preamble and general terms with the following, and by deleting all
attachments:

             PROGRAM REQUIREMENT FOR RESALE OF PRODUCTS AND SERVICES
                                       BY
               RESELLERS UNDER THE PRIVATE LABEL SOLUTIONS PROGRAM

                                    (5/1/04)

                  Sprint PCS' Resale Program ("RESALE PROGRAM") is described in
Section 3.5.2 of the Sprint PCS Management or Affiliations Agreement and
consists of this Program Requirement 3.5.2 (the "PROGRAM REQUIREMENT 3.5.2") and
separate attachments to the Program Requirement 3.5.2 ("ATTACHMENT(S)"). Each
Attachment is a separate Resale Program and includes a specific list of
companies with which Sprint PCS contracts to sell Sprint PCS Products and
Services under brand names other than the Brands.

                  "Capitalized terms used and not otherwise defined in this
Program Requirement 3.5.2 have the meaning ascribed to them in the Schedule of
Definitions in the Management or Affiliations Agreement. Section and Exhibit
references are to Sections and Exhibits of the Management or Affiliations
Agreement unless otherwise noted.

                  "As used in this Program Requirement "NPA-NXX" of Manager or
Affiliate means a NPA-NXX in the Service Area of that Manager or Affiliate or an
equivalent identifier, such as a network access identifier (NAI).

GENERAL TERMS

Unless otherwise specified, the Program Requirements outlined below apply to the
resellers set forth in the Attachments.

         1. PRODUCTS AND SERVICES OFFERED. Sprint PCS may from time to time
limit the Sprint PCS Products and Services that are provided to resellers.
Manager will provide to resellers those Sprint PCS Products and Services that
Sprint PCS provides to the resellers, and Manager will support products and
services offered resellers in the same fashion that Manager supports similar
Sprint PCS Products and Services.

         2. INFORMATION AND MINS. Manager will allow Sprint PCS access to
information necessary to bill resellers, including Call Detail Records and basic
provisioning information. For purposes of clarification, all such information
will constitute "Confidential Information" for purposes of the Management
Agreement. Neither Sprint PCS nor Manager will have access to resellers'
end-users' personal information. Sprint PCS will administer NPA-NXXs available
for resellers in a manner substantially the same as the MIN allocation process
in place for Sprint PCS owned markets. Sprint PCS will provide resellers with an
unbranded coverage map and zip code information for the Manager's service
area(s) substantially the same as the coverage map and zip code information
provided for Sprint PCS owned service areas.

         3. CONTACTS AND DISPUTES. Manager will direct any questions or disputes
regarding a reseller or resale arrangement to the designated representative(s)
within the Management Agreement and will not contact the resellers directly. Any
disputes between Manager and Sprint PCS regarding a resale arrangement will be
resolved under the terms of the Management Agreement.

         4. PRICING: SIX-SECOND INCREMENT BILLING. For all QuickNet Connect
(QNC) data and other traffic on the Manager's Service Area Network for which
Sprint PCS bills a reseller in six-second increments or some other incremental
measurement other than one-minute ("OTHER INCREMENT"), Sprint PCS will settle
with Manager in six-second increments or such Other Increment, as applicable.
Billed charges (per call or event) that result in fractional cents may be
rounded up to the next whole cent.

         5. SPRINT 3G DATA SERVICE. In addition to reselling certain Sprint PCS
Products and Services under brand names other than the Brands, some resellers
are also permitted to sell Sprint's 1XRTT advanced multimedia data services and
premium services associated with the PCS Vision service ("SPRINT 3G DATA
SERVICE") using the Sprint and PCS Vision service marks. If Manager specifically
consented to a reseller's use of the Brands in selling Sprint 3G Data Service in
the Manager's Service Area, the Manager will be compensated for Sprint 3G Data
Service as follows:

         The revenue for Sprint 3G Data Service sold by resellers using the
         Brands to reseller subscribers having an NPA-NXX of Manager will be
         treated as Billed Revenue under the Management Agreement. Billed
         Revenue will be based on reseller specific Sprint 3G Data Service
         pricing set forth in Attachment 1.1 to Program Requirement 3.5.2. From
         time to time, Sprint may amend the rates charged to Voluntary Resellers
         for Sprint 3G Data Service.

         6. SHORT MESSAGE SERVICE (SMS). For SMS messages on the Manager's
network used by subscribers of Voluntary Resellers with an NPA-NXX of Manager,
Manager will be compensated at the rate set forth in Attachment 1.2 to Program
Requirement 3.5.2, which may be amended from time to time in accordance with the
Management Agreement. For SMS messages used by subscribers of Voluntary
Resellers

with an NPA-NXX of Manager, there will be no compensation either paid or owed
when such subscribers are traveling outside of the Manager's Service Area.

         SMS messages means circuit-switched short alphanumeric messages on a
Voluntary Reseller subscriber's handset.

         7. FUTURE SERVICES. If Sprint PCS elects to enter into resale
arrangement with any then existing resellers or new resellers for any services
other than those services described in the current Attachments to this Program
Requirement 3.5.2 ("FUTURE SERVICES"), Manager is not required to activate
subscribers for the Future Services with an NPA-NXX of Manager until the next
available opt out date. If Manager does not elect to opt out of a Future
Services at the first opt out date following the date that Manager is notified
in writing of the resale arrangement for Future Services, Manager must allow the
then existing resellers of the Future Services and all future resellers of the
Future Services to activate subscribers with an NPA-NXX of Manager and Manager
must support those resellers of Future Services throughout the term of their
resale arrangements with Sprint PCS, including any renewal or phase out periods.
Sprint PCS will compensate Manager for the resale of Future Services at rates to
be established in future Attachments to Program Requirement 3.5.2, as amended
from time to time in accordance with the Management Agreement, which rates will
be communicated in writing to Manager in advance.

                 ATTACHMENT NO. 1.0 TO PROGRAM REQUIREMENT 3.5.2

                                 RESALE PROGRAM

This Attachment No. 1.0 to Program Requirement 3.5.2 contains the list of
resellers included in the Resale Program as of April 1, 2004.

RESELLERS

                                                              Effective
                                                              Renewal         Renewal
                                                              Date             Date           Period *
                                                              ----             ----           --------

Vartec Telecom, Inc. (Excel)                                  9/15/2000        12/15/2003     3 Years
ZefCom, L.L.C. (Telespire)                                    11/17/2000       11/17/2003     3/31/2006
Working Assets Funding Service, Inc.(Working Assets)          12/1/2001        12/31/2003     3 Years
Wherify Wireless, Inc. (Wherify Wireless)                     1/7/2002         1/7/2005
QUALCOMM Incorporated (Qualcomm / GlobalTracs)                1/8/2002         1/8/2005
Star Number, Inc. (Liberty Wireless)                          8/2/2002         8/2/2005
Telco Group, Inc. (STI Mobile)                                2/25/2003        2/25/2006
TRANZACT (Sears Connect)                                      3/21/2003        3/21/2006
Hal Inc. (U-Mobile PCS)                                       6/12/2003        6/12/2006
Wireless Retail Inc. (Airlink Mobile)                         6/17/2003        6/17/2006
Phonetec, L.P. (PhoneTec)                                     6/26/2003        6/26/2006
Qwest Wireless, LLC (Qwest)                                   8/3/2003         3/3/2009
TracFone Wireless, Inc. (TracFone)                            1/22/2004        1/22/2007

* If applicable.  Not including phase out periods.

Attachment No. 1.0 to Program Requirement 3.5.2 will be updated as new resellers
enter into a resale arrangement with Sprint PCS.

                 ATTACHMENT NO. 1.1 TO PROGRAM REQUIREMENT 3.5.2

                         SPRINT 3G DATA SERVICE PRICING

A)       QWEST WIRELESS

Listed below are the Qwest monthly recurring charges ("MRC") and Adjustment
Rates for Sprint 3G Data Service. Qwest will be billed the following MRC and
Adjustment Rate for each subscriber that uses any Qwest service enabled by
Sprint 3G Data Service.

HANDSET DATA SERVICE

Data Transport/Web Browsing/Third Party Instant Messaging

     o    MRC                        $8.10 (unlimited)

     o    Adjustment Rate            $0.002 per Kb

ADJUSTMENT RATE:

On a monthly basis, Sprint will calculate (as described below) the Sprint
average kilobytes per retail handset subscriber ("SAKPS") and the Qwest average
kilobytes per handset subscriber ("QAKPS"). If the QAKPS exceeds the SAKPS,
Sprint will charge Qwest an amount equal to the difference between the SAKPS and
the QAKPS multiplied by the total number of End users, multiplied by the
Adjustment Rate detailed above.

Sprint will calculate SAKPS by using the total number of kilobytes generated by
Sprint retail handset end users divided by the average number of Sprint retail
handset end users for the previous fiscal quarter. For example, the SAKPS for
May will be divided by the average number of Sprint retail handset end users for
the 1st fiscal quarter (January-March).

Average number of Sprint retail handset end users for the quarter is equal to
the beginning number of Sprint retail handset end users plus the ending number
of Sprint retail handset end users, divided by two.

QAKPS is equal to the total number of kilobytes generated by Qwest handset End
Users divided by the average number of Qwest handset End Users for the previous
fiscal quarter.

AVERAGE NUMBER OF QWEST HANDSET END USERS FOR THE QUARTER IS EQUAL TO THE
BEGINNING NUMBER OF QWEST HANDSET END USERS PLUS THE ENDING NUMBER OF QWEST
HANDSET END USERS, DIVIDED BY TWO.

In making the calculations described in this section, PDAs, "smart phones" and
other similar devices along with air cards will not be considered "handsets" as
that term is used therein.

THE PRICING IN THIS ATTACHMENT NO. 1.1 TO PROGRAM 3.5.2 IS SUBJECT TO CHANGE AS
SPRINT RETAIL PRICES OR INCLUDED SERVICES CHANGE.

                 ATTACHMENT NO. 1.2 TO PROGRAM REQUIREMENT 3.5.2

                          SHORT MESSAGE SERVICE PRICING

Unless otherwise specified in this Attachment 1.2 to Program Requirement 3.5.2,
Manager will be compensated at the rates listed below by Voluntary Reseller.

Short Message Service Rate:    $0.0246 per SMS message

Qwest SMS Rate:                $0.0110 per SMS message

                                  EXHIBIT 10.3

100% AFFILIATE RETAINED AMOUNTS

         Roaming Revenue
         International Roaming Credits
         Affiliate Equip Sale On Acct

100% SPRINT PCS RETAINED AMOUNTS

         Accrued Sales Taxes
         Accrued Federal Excise Taxes
         Collected Insurance

                                    EXHIBIT 1

                  ILLUSTRATIVE CALCULATION FOR CASH SETTLEMENT

CASH SIMPLIFICATION

ILLUSTRATIVE ONLY

                                                              MONTH1Y
                                                     --------------------------
WRITE-OFFS                                               $ 1,235

BILLED REVENUE                                           $10,350
CUSTOMER CREDITS                                            (970)
                                                     ---------------
NET BILLED REVENUE                                       $ 9,380         82.5%
CUSTOMER EQUIPMENT CREDITS                                   (66)        -0.6%
100% AFFILIATE RETAINED AMOUNTS                              235          2.1%
100% SPRINT PCS RETAINED AMOUNTS                           1,479         13.0%
CUSTOMER EQUIPMENT CHARGES                                   175          1.5%
E911 SURCHARGES                                               65          0.6%
WIRELESS LOCAL NUMBER PORTABILITY CHARGES                     26          0.2%
USF CHARGES                                                   74          0.7%
                                                     --------------- ----------
AMOUNT BILLED (NET OF CUSTOMER CREDITS)                  $11,368        100.0%

FEE CALCULATION

NET BILLED REVENUE                                       $ 9,380
ALLOCATED WRITE-OFF                                       (1,019)
                                                     ---------------
                                                         $ 8,361
                                                              92%
                                                     ---------------
FEE BASED ON BILLED REVENUE                              $ 7,692

100% AFFILIATE RETAINED AMOUNTS                          $   235
    ALLOCATED WRITE-OFF                                      (26)
PHASE II E911 SURCHARGES                                      53
    ALLOCATED WRITE-OFF                                       (6)
WIRELESS LOCAL NUMBER PORTABILITY CHARGES                      2
    ALLOCATED WRITE-OFF                                       (0)
CUSTOMER EQUIPMENT CREDITS                                   (66)
    ALLOCATED WRITE-OFF                                        7
WRITE-OFF FOR CUSTOMER EQUIPMENT CHARGES                     (19)
                                                     ---------------
                                                         $   180

TOTAL                                                    $ 7,872

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

                                 SCHEDULE 2.1.1

                                   -SECTION A-

PRESENTLY OFFERED CCPU SERVICES - Activity Applied as % to Sprint PCS reported
CCPU

3G Fees
A/P Backhaul/Facility Disputes
Affiliate Utilities
ATM Soft Hand Off Bank Fees
BI Performance Services - Initiation
BI Performance Services - Maintenance
Bid Cost
Billing
Check Free
Clarify Maintenance Fee
CO Usage
Collection Agency Fees
Conferences
Costs associated with rollout of new products and services
Credit Card Processing/Fees
Customer Care
Customer Solutions - Mature Life
Directory Assistance
DS3
E - Commerce PT
Enhanced Voicemail
Entrance Facility Expenses (Includes Terminating/Trunking Charge)
Ford Revenue
Ford Telematics
Gift Card Payable
Gift Card Receivable
Hal Riney Ad Kit
High Speed Remote Access Server
ICS Clearing House Costs (Includes Illuminet, Roaming Clearing House, and TSI)
IMT Charges
Interconnection
Inter-Machine Trunk
IT (Includes E-Commerce)
LD Verification
LIDB/CNAM
Local Loop, COC, ACF, IXC, etc. (National Platform Expense - Local Loop Cost,
         Central Office Connection (COC), access Coordination Fee (ACF),
         Co-Location Charges, and Inter Exchange Carrier (IXC) Charges)
Lockbox 261
MCI Disconnect Adjusted
National Platform - COA

National Platform Disputes
National Platform (2G) (Includes Voice Activated Dialing)

NATIONAL PLATFORM COMPONENT
FCAPS (FAULT, CONFIGURATION, ACCOUNTING, PERFORMANCE, SECURITY)
         Capital Projects
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

IN (INTELLIGENT NETWORK)
         Capital Expense
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

OSSN
         Capital Expense
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

3G
         Capital Projects
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

OPERATOR SERVICE
         Vendor Fee

WIRELESS WEB
         Capital Projects
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

MESSAGING
         Capital Projects

         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

VAD
         Capital Projects
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

VOICE MAIL
         Capital
         Expense Projects
         Circuit Expense
         CLOH
         Labor
         Forecasts

SOFTWARE MAINTENANCE
         Openwave
         Hewlett Packard
         Comverse
         Marconi
         Lucent
         Commworks
         Four Corners
         Other Vendors (39)

Northwest Frequent Flyer
Premium Vision Services
PreNet
Pricing
Pro Text Messaging Plan
Ringers & More (Includes SBF and PT fees)
Roadside Rescue
Sprint Synch Services
Telecheck Charge
Telematics
Text Messaging Plan
TSC Usage
Type 1 Affiliate Long Distance
Voice Command Web
Wireless Web

                                   -SECTION B-

PRESENTLY OFFERED CPGA SERVICES - Activity Applied as % to Sprint PCS reported
CPGA

500 Minute Promotion Credit
Activations - Customer Solutions
Activations - E-Commerce (Includes On Line (Web) Activations)
Activations - Telesales
Credit Check Fee
Customer Solutions - Early Life
Demo Phones
EarthLink
Hal Riney Service
Handset Logistics
Handset Obsolesence Fee and Carrying Costs
Local/Indirect Commission
Marketing Collateral Destruction
NAM/CAM
One Sprint Telesales
PGA Expenses
PLS Commission
SmartWorks Printing

                                   -SECTION C-

PRESENTLY OFFERED CCPU SERVICES - Activity Settled Separately

Affiliate Project Authorizations
Long Distance
E911 Phase I Revenue
Microwave Clearing
Roaming
Software Fees
Sprint Local Telephone Usage
Taxes Paid on Behalf of Type III Affiliates
Tower Lease
Travel Revenue and Expense
Upgrade Commission - 2 Step Channel
Vendor Usage-Based Charges on New Products
Wholesale Revenue and Expense

                                   -SECTION D-

PRESENTLY OFFERED CPGA SERVICES -Activity Settled Separately

3G Device Logistics Fee
3rd Party Spiffs
Accessory Margin

Commissions - National 3rd Party
Commissions - Other 3rd Party
Coop Advertising - Local 3rd Party
Coop Advertising - National 3rd Party
Handset returns
Handset subsidies
Handsets
Marketing Collateral (excluding destruction)
Meeting Competition Fund
RadioShack Promos (Includes RadioShack Golden Quarter, Jumpstart, Relaunch,
   Sprint to Vegas, and Break the Bank)
Rebate Administrative Expense
Rebates
Reciprocal Retail Store Cost Recovery
Sprint LDD Commission
Third Party Promotions
Upgrade Commission - RadioShack

                                    EXHIBIT A

         SECTION 17.28. FEDERAL CONTRACTOR COMPLIANCE. (1) The Manager will not
discriminate against any employee or applicant for employment because of race,
color, religion, sex, or national origin. The Manager will take affirmative
action to ensure that applicants are employed, and that employees are treated
during employment without regard to their race, color, religion, sex, or
national origin. Such action shall include, but not be limited to the following:
Employment, upgrading, demotion, or transfer; recruitment or recruitment
advertising; layoff or termination; rates of pay or other forms of compensation;
and selection for training, including apprenticeship. The Manager agrees to post
in conspicuous places, available to employees and applicants for employment,
notices to be provided setting forth the provisions of this nondiscrimination
clause.

         (2) The Manager will, in all solicitations or advertisements for
employees placed by or on behalf of the Manager, state that all qualified
applicants will receive considerations for employment without regard to race,
color, religion, sex, or national origin.

         (3) The Manager will send to each labor union or representative of
workers with which he has a collective bargaining agreement or other contract or
understanding, a notice to be provided advising the said labor union or workers'
representatives of the Manager's commitments under this section, and shall post
copies of the notice in conspicuous places available to employees and applicants
for employment.

         (4) The Manager will comply with all provisions of Executive Order
11246 of September 24, 1965, and of the rules, regulations, and relevant orders
of the Secretary of Labor.

         (5) The Manager will furnish all information and reports required by
Executive Order 11246 of September 24, 1965, and by rules, regulations, and
orders of the Secretary of Labor, or pursuant thereto, and will permit access to
his books, records, and accounts by the administering agency and the Secretary
of Labor for purposes of investigation to ascertain compliance with such rules,
regulations, and orders.

         (6) In the event of the Manager's noncompliance with the
nondiscrimination clauses of this contract or with any of the said rules,
regulations, or orders, this contract may be canceled, terminated, or suspended
in whole or in part and the Manager may be declared ineligible for further
Government contracts or federally assisted construction contracts in accordance
with procedures authorized in Executive Order 11246 of September 24, 1965, and
such other sanctions may be imposed and remedies invoked as provided in
Executive Order 11246 of September 24, 1965, or by rule, regulation, or order of
the Secretary of Labor, or as otherwise provided by law.

         (7) The Manager will include the portion of the sentence immediately
preceding paragraph (1) and the provisions of paragraphs (1) through (7) in
every subcontract or purchase order unless exempted by rules, regulations, or
orders of the Secretary of Labor issued pursuant to section 204 of Executive
Order 11246 of September 24, 1965, so that such provisions will be binding upon
each subcontractor or vendor. The Manager will take such action with respect to
any subcontract or purchase order as the administering agency may direct as a
means of enforcing such provisions, including sanctions for noncompliance.
Provided, however, that in the event a Manager becomes involved in, or is
threatened with, litigation with a subcontractor or vendor as a

result of such direction by the administering agency the Manager may request the
United States to enter into such litigation to protect the interests of the
United States.

         (8) In consideration of contracts with Sprint PCS, the Manager agrees
to execute the Certificate of Compliance attached hereto as Attachment I and
further agrees that this certification shall be part of each contract between
Sprint PCS and Manager. The Manager will include Attachment I in every
subcontract or purchase order, so that such provisions will be binding upon each
subcontractor.

         Attachment I

                         CERTIFICATE OF COMPLIANCE WITH
                               FEDERAL REGULATIONS

In consideration of contracts with SPRINT SPECTRUM L.P., the undersigned
"contractor", "vendor" or "consultant" agrees to the following and further
agrees that this Certification shall be a part of each purchase order, supply
agreement, or contract between SPRINT SPECTRUM L.P. and the undersigned.

1.       Equal Opportunity
         Executive Order 11246 is herein incorporated by reference.

2.       Affirmative Action Compliance
         If undersigned Contractor has 50 or more employees and if this contract
         is for $50,000 or more, Contractor shall develop a written Affirmative
         Action Compliance Program for each of its establishments, as required
         by rules and regulations of the Secretary of Labor (41 CFR 60-1 and
         60-2).

3.       Affirmative Action for Special Disabled and Vietnam Era Veterans
         If this contract exceeds $10,000, the undersigned Contractor certifies
         that the Contractor does not discriminate against any employee or
         applicant because the person is a Special Disabled or Vietnam Veteran
         and complies with the rules, regulations and relevant orders of the
         Secretary of Labor issued pursuant to the Vietnam Veterans Readjustment
         Assistance Act of 1972, as amended.

         Contractor hereby represents that it has developed and has on file, at
         each establishment, affirmative action programs for Special Disabled
         and Vietnam Era Veterans required by the rules and regulations of the
         Secretary of Labor (41 CFR 60-250).

4.       Affirmative Action for Handicapped Workers
         If this contract exceeds $2,500, the undersigned Contractor certifies
         that the Contractor does not discriminate against any employee or
         applicant because of physical or mental handicap and complies with the
         rules, regulations and relevant orders of the Secretary of Labor issued
         under the Rehabilitation Act of 1973, as amended.

         Contractor hereby represents that it has developed and has on file, at
         each establishment, affirmative action programs for Handicapped Workers
         required by the rules and regulations of the Secretary of Labor (41 CFR
         60-741).

5.       Employer Information Report (EEO-1 Standard Form 100)
         If undersigned Contractor has 50 or more employees and if this contract
         is for $10,000 or more, Contractor shall complete and file government
         Standard Form 100, Equal Employment Opportunity Employer Information
         Report EEO-1, in accordance with instructions contained therein.

6.       Compliance Review
         The undersigned Contractor certifies that it has not been subject to a
         Government equal opportunity compliance review. If the Contractor has
         been reviewed, that review occurred on __________________ (date).

7.       Utilization of Small Businesses, Small Disadvantaged Businesses, and
         Women-Owned Small Business
         It is the policy of SPRINT SPECTRUM L.P., consistent with Federal
         Acquisition Regulations (FAR 52.219-8 and FAR 52.219-13), that small
         business concerns, small business concerns owned and controlled by
         socially and economically disadvantaged individuals, and women-owned
         businesses shall have the maximum practicable opportunity to
         participate in performing subcontracts under Government contracts for
         which SPRINT SPECTRUM L.P. is the Government's Prime Contractor. SPRINT
         SPECTRUM L.P. awards contracts to small businesses to the fullest
         extent consistent with efficient prime contract performance. The
         Contractor agrees to use its best efforts to carry out this policy in
         the award of its subcontract to the fullest extent consistent with the
         efficient performance of this contract.

         Contractor hereby represents that it ___ is ___ is not a small
         business, ___ is ___ is not a small business owned and controlled by
         socially and economically disadvantaged individuals, and ___ is ___ is
         not a small business controlled and operated as a women-owned small
         business as defined by the regulations implementing the Small Business
         Act.

         If the answer to any of the above is in the affirmative, Contractor
         will complete SPRINT SPECTRUM L.P. Small/Minority/Women Owned Business
         Self Certification Form. This form is available from Sprint
         Corporation's Human Resources Department..

8.       Certification of Nonsegregated Facilities
         If this contract is expected to exceed $10,000, the undersigned
         Contractor certifies as follows:

         The Contractor certifies that the Contractor does not or will not
         maintain or provide for its employees any segregated facilities at any
         of its establishments, and that it does not and will not permit its
         employees to perform services at any location, under its control, where
         segregated facilities are maintained. The Contractor agrees that a
         breach of this Certification is a violation of the Equal Opportunity
         provision of this contract. As used in this Certification, the term
         "segregated facilities" means any waiting rooms, work areas, rest rooms
         and wash rooms, restaurants and other eating areas, time clocks, locker
         rooms and other storage or dressing areas, parking lots, drinking
         fountains, recreation or entertainment areas, transportation, and
         housing facilities provided for employees that are segregated by
         explicit directive or are in fact segregated on the basis of race,
         color, religion, or national origin, because of habit, local custom, or
         otherwise. Contractor further agrees that (except where it has obtained
         identical certifications from proposed subcontracts for specific time
         periods) it will obtain identical certifications from proposed
         subcontractors prior to the award of subcontracts exceeding $10,000
         that are not exempt from the provisions of the Equal Opportunity
         Clause; and that it will retain such certification in its files.

9.       Clean Air and Water
         The undersigned Contractor certifies that any facility to be used in
         the performance of this contract ___ is ___ is not listed on the
         Environmental Protection Agency List of Violating Facilities.

         The undersigned Contractor agrees to immediately notify SPRINT SPECTRUM
         L.P., immediately upon the receipt of any communication from the
         Administrator or a designee of the Environmental Protection Agency
         indicating that any facility that the Contractor proposes to use for
         the performance of the contract is under consideration to be listed on
         the EPA List of Violating Facilities. SPRINT SPECTRUM L.P. includes
         this certification and agreement pursuant to FAR 52-223-1(c) which
         requires including such paragraph (c) in every nonexempt subcontract.

                                          CONTRACTOR:

                                          --------------------------------
                                          Company Name

                                          --------------------------------
                                          Address

                                          --------------------------------
                                          City           State         Zip

                                          By
                                             -----------------------------
                                             Name:
                                                  ------------------------
                                             Title:
                                                   -----------------------

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00068-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00068-of-00352.parquet"}]]