Document:

<PAGE>

                                                                 EXHIBIT 10.15.3

                                AMENDMENT NO. 3
                                       TO
                 AMENDED AND RESTATED SYSTEM EQUIPMENT PURCHASE
                                    AGREEMENT

        THIS AMENDMENT NO. 3 (this "Amendment") to the Contract (as defined
below) between CRICKET COMMUNICATIONS, INC., a Delaware corporation (the "Owner"
or "Cricket") and LUCENT TECHNOLOGIES INC., a Delaware corporation (the "Vendor"
or "Lucent"), is made effective as of this March 22, 2002 ("Effective Date").

                                    RECITALS

WHEREAS, the Owner and Vendor entered into that certain Amended and Restated
System Equipment Purchase Agreement, dated as of June 30, 2000, as amended by
Amendment No. 1 effective March 22, 2002, and Amendment No. 2 effective March
22, 2002 ("Amendment No. 2"), collectively (the "Contract"); and

WHEREAS, in Section 18 of Amendment No. 2, the Owner and Vendor contemplated
this Amendment to document the transition of certain management Services
heretofor provided by Vendor pursuant to the Contract, with Owner assuming
responsibility therefor pursuant to this Amendment; and

WHEREAS, the Owner and Vendor desire to clarify in more detail the transition of
such management Services to Owner as set forth in this Amendment; and

WHEREAS, the Owner and Vendor desire to update other Contract Exhibits to more
accurately reflect the Work actually being performed as of the Services
Transition Date (as hereinafter defined) for each Transition Site (as
hereinafter defined); and

WHEREAS, the Owner and Vendor desire to amend the Contract as set forth herein.

                                    AGREEMENT

         NOW, THEREFORE, in consideration of the mutual promises and covenants
set forth in this Amendment, the Owner and Vendor hereby agree as follows:

1.   Interpretation:

     Capitalized terms not otherwise defined herein, including those used in all
     attachments hereto, shall have the same meanings as set forth in the
     Contract. In the event of any conflict between the terms of this Amendment
     and the Contract or any other written agreements between the parties, the
     terms of this Amendment shall prevail with respect to the subject matter
     herein, except that if the conflict is between this Amendment and Amendment
     No. 2, then Amendment No. 2 shall prevail.

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>

2.   Additional Terms:

     "Services Transition Date" or "STD" shall be that effective date specified
     individually for each Transition Site on which Owner hereby assumes
     responsibility for performing the Transition Services for such Transition
     Site, all as set forth in the "Cricket Site Transition Summary" attached
     hereto and incorporated into the Contract as Exhibit V.

     "Transition Services" shall be only those construction management Services
     heretofor provided by Vendor pursuant to Contract Exhibit E2-B, and those
     overall program/project management Services heretofor provided by Vendor
     pursuant to Contract Exhibit E-7, as both Exhibits are amended by Exhibit
     E-7 Supplement No. 1 Post Transition Program/Construction Management
     attached hereto, as such supplement relates to Exhibit E-5 Supplement No. 1
     - Post Transition Site Acquisition; Exhibit E-4 Supplement No. 1 - Post
     Transition Architectural and Engineering, and Exhibit E-3 Supplement No. 1
     - Post Transition Construction Services, also attached hereto.

     "Transition Sites" shall be those Sites identified on Exhibit V attached
     hereto.

3.   Applicability of Amendment:

     This Amendment shall apply as of the Effective Date, except as expressly
     indicated otherwise herein. This Amendment shall apply only to the
     Transition Sites, all of which are BTS Sites.

4.   Assumption of Transition Services:

     Cricket hereby assumes responsibility for the Transition Services not yet
     performed on each Transition Site effective as of the applicable STD, and
     Vendor hereby assigns its obligation to perform such Transition Services to
     Cricket and shall not charge Cricket for the performance of any such
     Transition Services. Further, to the extent such Transition Services were
     previously ordered by Cricket in a Purchase Order, Lucent acknowledges and
     agrees that such Transition Services shall be performed by Cricket as of
     the applicable STD for the Transition Sites, and Cricket shall not be
     invoiced by Lucent for such Transition Services. Except for (i) Vendor's
     warranty obligations for Services provided prior to the applicable STD, and
     (ii) those Project Controls Tasks and other Lucent obligations described in
     Exhibit E-7 Supplement No. 1 Post Transition Program/Construction
     Management, attached hereto, Vendor shall not be responsible to perform the
     Transition Services on the Transition Sites post-STD. Cricket shall
     generally perform the Transition Services in conformity with the scope of
     work contained in Exhibit E-7 Supplement No. 1 Post Transition
     Program/Construction Services, attached hereto.

     Exhibit E-7 Supplement No. 1 Post Transition Program/Construction Services,
     attached hereto, shall upon the applicable STD, replace the following
     Exhibits with respect to the Transition Sites:

                                  Page 2 of 6
<PAGE>

          -  Exhibit E-2B Construction Management Cell Sites

          -  Exhibit E-2B Site Construction Management Responsibility Matrix

          -  Exhibit E-7 Overall Program/Project Management.

     Because Vendor is hereby assigning its obligation to perform the post-STD
     Transition Services at the Transition Sites to Cricket, and as a result,
     Vendor will no longer have direct field management for the Vendor
     Subcontractors' Work, the provisions of Contract Section 18 Warranties of
     the Contract shall not apply to Services provided on the Transition Sites
     after the applicable STD where the pertinent warranty claim is caused by
     the act or omission of a Vendor Subcontractor under the Program Management
     or Construction Management control of the Owner. Lucent hereby agrees to
     pass through and assign to Cricket all of Lucent's rights under warranties
     given by or through the Vendor Subcontractors. Lucent shall further provide
     reasonable and prompt assistance to Cricket in making and enforcing any
     warranty claim against a Vendor Subcontractor.

     Vendor shall have no liability to Owner, and Owner shall look only to the
     applicable Vendor Subcontractor(s), to enforce any Claims of Owner under
     the provisions of Contract Section 15 Intellectual Property and Contract
     Section 20 Indemnification and Limitations of Liability of the Contract for
     any infringement of any third party patent, copyright, trademark or trade
     secret right, or other intellectual property right, that occurs as a result
     of Services performed by a Vendor Subcontractor under Cricket's Program
     Management or Construction Management control, except in any case where the
     alleged infringement is due to information, Products or instructions
     provided by Lucent or a Vendor Subcontractor not under Cricket's Program
     Management or Construction Management control. Nothing in this Amendment
     shall affect Lucent's obligations or Cricket's rights as they pertain to
     either (i) Services performed for the Transition Sites to the extent they
     were performed prior to the applicable STD, or (ii) Lucent's obligations
     under contracts entered into between Lucent and any Vendor Subcontractor.
     Lucent hereby agrees to pass through, and assign to Cricket, Lucent's
     rights under indemnification obligations of Vendor Subcontractors as they
     pertain to any infringement of intellectual property rights.

     Owner shall periodically report to Vendor any quality issues Owner may have
     with the performance of Vendor Subcontractors pertaining to Transition
     Sites post STD. In such reports, Owner shall inform Vendor of any material
     discrepancies in the quality of Work performed by such Vendor
     Subcontractors. Vendor shall provide reasonable assistance to Owner to
     resolve such discrepancies and when required by Owner, authorize another
     Vendor Subcontractor to complete the Work. Owner shall timely approve in
     writing all Work satisfactorily performed by the Vendor Subcontractors on
     the Transition Sites post-STD. The approval process shall be as described
     in Exhibit E-10, Post Transition Invoice Approval Process (including the
     Approval Form), attached hereto.

                                  Page 3 of 6
<PAGE>

5.   Services Statements of Work Updated to Reflect Current Conditions
     Post-Transition:

     Owner and Vendor agree, that as of the Effective Date of this Amendment,
     the Services specified in this Section 5 are hereby updated to more closely
     reflect the current Work as being performed in relation to those Transition
     Sites for which the STD has occurred. Vendor will use Vendor Subcontractors
     to perform the Work described below, except as otherwise agreed between the
     parties. For the completion of the Transition Sites, Owner shall issue a
     single master Purchase Order to Vendor. Owner shall then issue separate
     Change Orders specific to and referencing a Transition Site detailing the
     Products and Services required to complete that Transition Site and achieve
     Final Acceptance thereof. All Change Orders shall be subject to the
     Contract and the current change order procedures established by Cricket,
     subject to Vendor's right to charge Owner under the Change Orders  [***].
     For each Change Order, Cricket shall negotiate the terms and conditions or
     Site-specific statements of work regarding the Vendor Subcontractor's
     expected performance, and such terms shall serve as the basis for Vendor's
     purchase order to such Vendor Subcontractor to provide the required
     Products and Services to Owner under the Contract. Vendor Subcontractor
     invoice approval shall be as described in Exhibit E-10 Vendor Subcontractor
     Invoice Approval Process for Transition of SACS Management Services to
     Cricket (including the SACS - Acceptance Form), attached hereto.

     a)  Site Acquisition and Zoning Services -- With respect to the Transition
         Sites, Exhibits E-5B; E-5C and E-5D for Site Acquisition Services shall
         be substituted in their entirety with Exhibit E-5 Supplement No. 1 Site
         Acquisition and Zoning Services, attached hereto.

     b)  Architectural and Engineering Services - With respect to the Transition
         Sites, Exhibits E-4A, E-4B and E4C for Architectural and Engineering
         Services shall be substituted in their entirety with Exhibit E-4
         Supplement No. 1 Architectural and Engineering Services, attached
         hereto.

     c)  Construction Services - With respect to the Transition Sites, Exhibits
         E-3A and E-3B for Construction Services shall be substituted in their
         entirety with Exhibit E-3 Supplement No. 1 Construction Services,
         attached hereto.

     d)  BTS Installation Services - With respect to the Transition Sites,
         Exhibits F for Installation Services (including Exhibit F2 the
         Installation Services Matrix) shall be substituted in their entirety
         with Exhibit F Supplement No. 1 (together with the attached
         responsibility matrix) plus Exhibit F Supplement No. 2 the notice to
         proceed checklist (the "NTP Checklist"), attached hereto. Vendor shall
         not be required to commence Installation and Integration of the BTS
         prior to all items in Exhibit U, Lucent Technologies Inc. Site
         Preparation Checklist, and the NTP Checklist being completed.

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

                                  Page 4 of 6
<PAGE>

     e)  Cluster Optimization -- With respect to the Transition Sites, Exhibit G
         of the Contract as it pertains to cluster optimization shall be amended
         by Exhibit G Supplement No. 1 -- Individual Cluster Optimization,
         attached hereto.

6.   Full Force and Effect. Except as expressly modified in this Amendment, the
     Contract, shall remain unmodified and in full force and effect.

7.   Entirety of Amendment. This Amendment, together with the Contract
     constitute the entire agreement between the parties with respect to the
     subject matter thereof. No modifications, alterations or waivers of any
     provision contained herein shall be binding on the parties hereto unless
     executed after the date hereof and evidenced in writing signed by duly
     authorized representatives of both parties.

         IN WITNESS WHEREOF, the parties hereto have caused this Amendment No. 3
to be executed by their duly authorized representatives effective as of the date
first set forth above.

"VENDOR" OR "LUCENT"                        "OWNER" OR "CRICKET"
LUCENT TECHNOLOGIES INC.,                   CRICKET COMMUNICATIONS, INC.,
a Delaware corporation                      a Delaware corporation

By: /s/ STEVE MARINO                        By:  /s/ S. G. SWENSON
    -------------------------                  ------------------------------
Name: Steve Marino                          Name:  Sue Swenson
    -------------------------                     ---------------------------
Title: CTVP                                 Title: President and COO
       ----------------------                      --------------------------
Date:  9/5/02                               Date:  August 23, 2002
     ------------------------                     ---------------------------

<PAGE>

                                    EXHIBITS

Exhibit E-3 Supplement No.1 - Construction Services

Exhibit E-4 Supplement No. 1 - Architectural and Engineering Services

Exhibit E-5 Supplement No. 1 - Site Acquisition and Zoning Services

Exhibit E-7 Supplement No. 1 - Post Transition Program/Construction Management

Exhibit E-10 - Post Service Transition Approval Process/Flowchart/Approval Form

Exhibit F Supplement No. 1 - BTS Installation Services/Matrix

Exhibit F Supplement No. 2 - NTP Checklist

Exhibit G Supplement No. 1 - Individual Cluster Optimization

Exhibit V - Cricket Site Transition Summary

                                  Page 6 of 6
<PAGE>
                           [LUCENT TECHNOLOGIES LOGO]

                EXHIBIT E-3 SUPPLEMENT NO.1 CONSTRUCTION SERVICES
--------------------------------------------------------------------------------

SCOPE OF WORK -  CONSTRUCTION SERVICES

[THREE PAGES OF PROPRIETARY INFORMATION DELETED PURSUANT TO CONFIDENTIAL
TREATMENT REQUEST]

                         LUCENT TECHNOLOGIES PROPRIETARY
                                   Page 1 of 3

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>

                           [LUCENT TECHNOLOGIES LOGO]

       EXHIBIT E-4 SUPPLEMENT NO. 1 ARCHITECTURAL AND ENGINEERING SERVICES
--------------------------------------------------------------------------------
                         LUCENT TECHNOLOGIES PROPRIETARY

SCOPE OF WORK - ARCHITECTURAL & ENGINEERING SERVICES

[THREE PAGES OF PROPRIETARY INFORMATION DELETED PURSUANT TO CONFIDENTIAL
TREATMENT REQUEST]

                         LUCENT TECHNOLOGIES PROPRIETARY
                                   Page 1 of 3

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>

        EXHIBIT E-5 SUPPLEMENT NO. 1 SITE ACQUISITION AND ZONING SERVICES

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

SCOPE OF WORK  - SITE ACQUISITION AND ZONING SERVICES

[THREE PAGES OF PROPRIETARY INFORMATION DELETED PURSUANT TO CONFIDENTIAL
TREATMENT REQUEST]

                         LUCENT TECHNOLOGIES PROPRIETARY
                                   Page 1 of 3

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>

                           [LUCENT TECHNOLOGIES LOGO]

EXHIBIT E-7 SUPPLEMENT NO. 1 POST TRANSITION PROGRAM/CONSTRUCTION MANAGEMENT
--------------------------------------------------------------------------------

SCOPE OF WORK  - POST TRANSITION -PROGRAM/CONSTRUCTION MANAGEMENT

[TWO PAGES OF PROPRIETARY INFORMATION DELETED PURSUANT TO CONFIDENTIAL TREATMENT
REQUEST]

                         LUCENT TECHNOLOGIES PROPRIETARY
                                   Page 1 of 2

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>

        Vendor Subcontractor Invoice Approval Process for Transition of
                       SACS Management Services to Cricket

                                                                   Exhibit E-10

OVERVIEW

Prior to invoice submittal to Lucent (or "Vendor" per the Contract), Lucent's
vendor ("Vendor Subcontractor" per the Contract) will be required to submit and
gain Cricket ("Owner" per the Contract) approval of the Work along with a
statement of all charges that represent the Work performed. The statement of
charges is to be presented to Owner on the SACS Acceptance Form, attached hereto
(the "Acceptance Form"), and once approved will represent the Vendor
Subcontractor's authorization to present an invoice to Vendor.

Upon receipt of the Acceptance Form from Vendor Subcontractor, Cricket has 5
business days to either approve or reject Vendor Subcontractor's statement of
charges. Acceptance Forms not properly filled out or supported by appropriate
documentation will be rejected and sent back to the Vendor Subcontractor for
re-submittal. A checklist of reasons for rejection will accompany rejected
Acceptance Forms. Acceptance Forms, which are properly filled out and that
attach sufficient supporting documentation for Work satisfactorily performed
will be approved and sent back to the Vendor Subcontractor for invoice
preparation to be sent to Vendor.

Approval criteria for the Acceptance Form must include the following:

        1.      All fields required must be completed

        2.      If Work is subject to a Change Order or SAWO, the Change Order
                or SAWO number must appear on Acceptance form and must be
                approved in writing by Owner,

        3.      The master Purchase Order from Owner to Vendor for Transition
                Site completion must have a positive balance remaining to cover
                the invoiced amount. Any Vendor Subcontractor invoice dollar
                amount, (representing the Work together with the statement of
                charges, approved by Owner [***]), that is above the current
                Purchase Order funding level authorized to Vendor by Owner, will
                not be paid even if Owner approves such Work represented by
                Vendor Subcontractor's invoice. Vendor will not be liable for
                payments to Vendor Subcontractors in excess of Owner's
                authorized Purchase Order amount, which is directly tied to a
                specific scope of Work ("SOW").

* If the above items are not properly followed, Vendor reserves the right to
withhold payment to Vendor Subcontractors, subject to Vendor's obligations under
SEPA Section 2.8. Vendor Program Management will track Purchase Order funding
levels in conjunction with the burn rates and will provide weekly reports to
both the Owner and Vendor Subcontractors. Vendor Program Manager will 1) notify
Owner in writing officially requesting additional Purchase Order funding as
appropriate and 2) work with Vendor's Supply Chain Networks (SCN) Group to
ensure payments to Vendor Subcontractor does not exceed the amounts authorized
under Owner's Purchase Order to Vendor.

If Owner approves the Work along with the statement of charges, Owner will
deliver the approved Acceptance Form to the following parties:

        1.      Vendor Subcontractor - to trigger invoicing

        2.      Vendor Program Manager - for tracking purposes

Vendor Program Manager will forward to Vendor Controls in Alpharetta a copy of
the approved Acceptance Form to match against the Vendor Subcontractor invoice.

Once Vendor Subcontractor has secured Owner's approval on Acceptance Form,
Vendor Subcontractor is now authorized to submit it's invoice to Vendor's
Alpharetta, Georgia Controls via Vendor's SORVIVE processing system and also
forward a copy of the Owner approved Acceptance Form to Vendor Controls in
Alpharetta. Upon receipt of the invoice within SORVIVE, Vendor's Alpharetta
Controls matches the invoice in SORVIVE with the approved Owner Acceptance Form.
If documents match and funds are available per Owner's Purchase Order to Vendor,
the invoice is sent on to Vendor Accounts Payable for payment to the Vendor
Subcontractor.

                         Lucent Technologies Proprietary
                                   Page 1 of 2

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>

         Vendor Subcontractor Invoice Approval Process for Transition of
                       SACS Management Services to Cricket

                                                                   Exhibit E-10

If the Acceptance From has been approved by Owner, but does not furnish adequate
information for Vendor's Alpharetta controls to match and pay then the invoice
will be rejected and sent back to the Vendor Subcontractor with a copy to Vendor
Program Management and Owner. Such rejection will include a checklist detailing
the reason for non-payment. Owner and Vendor Program Management will be copied
on rejection documentation.

If Vendor Subcontractor Purchase Order funds are not sufficient to cover
approved invoices, such invoices that exceed the total value of the Vendor
Subcontractor Purchase Order, will not be accepted for payment and will be
rejected and returned to the Vendor Subcontractor.

If invoices are submitted through SORVIVE and the accompanying Acceptance Form
is not received at Vendor's Alpharetta Controls within five business days, the
invoice will be rejected.

Charges for Change Orders require a valid Change Order log number to be
documented on the Acceptance Form. If the Acceptance Form for a Change Order is
presented to Cricket without a Change Order log number, Owner will reject the
Acceptance Form. If the Acceptance Form is approved by Owner for Work pursuant
to a Change Order without the valid Change Order number that was provided,
Vendor's Alpharetta Controls will reject the invoice.

Vendor Subcontractors will be required to utilize SORVIVE as the vehicle for
submitting electronic invoices. Vendor's Accounts Payable will not process paper
invoices as of April 1, 2002.

ELECTRONIC APPROVAL
Acceptance Forms can be electronically submitted from Vendor Subcontractor to
Owner for approval. If an Acceptance Form is deemed acceptable and Owner
approves the charges, Owner's approver will forward his/her approval e-mail,
with a copy of the original e-mail request from the Vendor Subcontractor to 1)
Vendor Subcontractor and, 2) Vendor Program Manager Vendor Program Manager will
then forward the Owner approved Acceptance Form to Vendor Controls in
Alpharetta.

                         Lucent Technologies Proprietary
                                   Page 2 of 2

<PAGE>

                [CRICKET TRANSITION VENDOR INVOICING FLOW CHART]

<PAGE>

                                                       Exhibit F Supp 1 (Matrix)

<TABLE>
<CAPTION>
RESPONSIBILITY MATRIX

                                                                            --------------------------------------------------------
                           BTS INSTALLATION                                 CRICKET         LUCENT INST'N         LUCENT CONTR
                                                                            --------------------------------------------------------
<S>                                                                        <C>                 <C>                  <C>
                                                                            Activity            Activity             Activity
NO.                                                                         Resp.               Resp.                Resp
                                                                            --------------------------------------------------------

   [ONE PAGE OF PROPRIETARY AND TECHNICAL INFORMATION DELETED PURSUANT TO
   CONFIDENTIAL TREATMENT REQUEST]

</TABLE>

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

                        Lucent Technologies Proprietary
                                     1 of 1

<PAGE>

                                                                Exhibit F Supp 2

<TABLE>
<CAPTION>
Responsibility Matrix         Installation NTP

                                                                            --------------------------------------------------------
BTS NTP FOR INSTALLATION                                                     CRICKET         LUCENT INST'N         LUCENT CONTR
                                                                            --------------------------------------------------------
<S>                                                                        <C>                 <C>                  <C>
                                                                            Activity            Activity             Activity
NO.                                                                         Resp.               Resp.                Resp
                                                                            --------------------------------------------------------

   [ONE PAGE OF PROPRIETARY AND TECHNICAL INFORMATION DELETED PURSUANT TO
   CONFIDENTIAL TREATMENT REQUEST]

</TABLE>

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

                        Lucent Technologies Proprietary
                                     1 of 1

<PAGE>

                                                               Exhibit G Supp 1

                         INDIVIDUAL CLUSTER OPTIMIZATION

1.0 INDIVIDUAL CLUSTER OPTIMIZATION

[THREE PAGES OF PROPRIETARY INFORMATION DELETED PURSUANT TO CONFIDENTIAL
TREATMENT REQUEST]

                         Lucent Technologies Proprietary
                                   Page 1 of 3

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>

                                                         CRICKET AMENDMENT NO. 3
                                          EXHIBIT V- SERVICES TRANSITION SUMMARY

                            CRICKET TRANSITION SITES
                               LUCENT %S PERFORMED

<TABLE>
<CAPTION>
                                                                         LUCENT PERFORMED %
                     ---------------------------------------------------------------------------------------------------------------
                              SITE                   SITE                                                                 TRANSITION
MARKET                       NUMBER                  TYPE         CONSTRUCTION     SA           A&E          CM              DATES
------               -----------------------    --------------    ------------    ----         -----        ----          ----------
<S>                 <C>                        <C>                     <C>        <C>          <C>          <C>           <C>
Fayetteville         xna002                     Non-MLA CoLoc           0%         100%         100%         100%
Fayetteville         xna011c                    Non-MLA CoLoc           0%          30%         100%         100%
Fayetteville         xna24b                     MLA CoLoc               0%          30%          10%          50%
Fayetteville         xna26a                     Non-MLA CoLoc           0%          30%          10%          50%
Lincoln              LIN-008 B                  Rooftop                 0%          30%           0%           0%         1/31/2002
Lincoln              LIN-009 B                  Non-MLA CoLoc           0%          30%           0%          55%         1/31/2002
Lincoln              LIN-019                    Raw Land                0%          30%          95%          55%         1/31/2002
Lincoln              LIN-023 A                  Non-MLA CoLoc           0%         100%          95%          55%         1/31/2002
Little Rock          LIT-001                    Non-MLA Coloc           0%         100%         100%          50%         5/18/2001
Little Rock          LIT-010                    Rooftop                 0%         100%         100%          50%         5/18/2001
Little Rock          LIT-018                    Rooftop                 0%         100%         100%          50%         5/18/2001
Little Rock          LIT-034                    MLA Coloc               0%           0%           0%           0%         5/18/2001
Little Rock          LIT-050                    Non-MLA Coloc           0%         100%         100%         100%         5/18/2001
Little Rock          LIT-056                    Raw Land                0%           0%         100%           0%         5/18/2001
Memphis              MEM-026C                   Raw Land                0%         100%         100%         100%         4/30/2001
Memphis              MEM-038B                   Water Tower             0%         100%         100%           0%         4/30/2001
Memphis              MEM-039A                   Non-MLA CoLoc           0%         100%         100%          50%         4/30/2001
Memphis              MEM-041C                   Raw Land                0%         100%           0%           0%         4/30/2001
Omaha                OMA-012 A                  Non-MLA CoLoc           0%          30%          95%          50%          1/2/2002
Omaha                OMA-020 A                  Non-MLA CoLoc           0%          30%          95%          50%          1/2/2002
Omaha                OMA-024 A                  MLA CoLoc               0%          30%          95%          50%          1/2/2002
Omaha                OMA-033 A                  Raw Land                0%          30%          95%          50%          1/2/2002
Omaha                OMA-038 C                  Non-MLA CoLoc           0%          30%          95%          50%          1/2/2002
Omaha                OMA-048                    Raw Land                0%          30%          95%          50%          1/2/2002
Omaha                OMA-057 C                  Raw Land                0%          30%          95%          50%          1/2/2002
Omaha                OMA-061 D                  Raw Land                0%          30%          95%          50%          1/2/2002
Tulsa                TUL-021                    Raw Land                0%           0%           0%           0%         4/30/2001
Tulsa                TUL-023 E                  Non-MLA CoLoc           0%           0%         100%          50%         4/30/2001
Tulsa                TUL-033 A                  Non-MLA CoLoc           0%           0%         100%         100%         4/30/2001
Tulsa                TUL-034 E                  Raw Land                0%           0%         100%         100%         4/30/2001
Tulsa                TUL-050 E                  MLA CoLoc               0%         100%         100%         100%         4/30/2001
Tulsa                TUL-052 A                  Raw Land                0%          20%         100%           0%         4/30/2001
Tulsa                TUL-053 A                  Rooftop                 0%          20%         100%           0%         4/30/2001
Wichita              ICT-009A                   Non-MLA CoLoc           0%         100%         100%         100%         4/30/2001
Wichita              ICT-016F                   MLA CoLoc               0%         100%         100%         100%         4/30/2001
Wichita              ICT-033E                   Non-MLA CoLoc           0%         100%         100%           0%         4/30/2001
Alburquerque         ABQ-016                    MLA CoLoc               0%         100%         100%         100%         4/27/2001
Alburquerque         ABQ-019                    MLA CoLoc               0%         100%         100%         100%         4/27/2001
Alburquerque         ABQ-024                    MLA CoLoc               0%         100%         100%         100%         4/27/2001
Alburquerque         ABQ-038                    Rooftop                 0%         100%         100%         100%         4/27/2001
Alburquerque         ABQ-042                    Rooftop                 0%         100%         100%         100%         4/27/2001
Denver               Den-006                    Rooftop                 0%          30%         100%          50%          9-Nov-01
Denver               Den-014                    Rooftop                 0%         100%           0%          50%          9-Nov-01
Denver               Den-016                    Rooftop                 0%         100%         100%          50%          9-Nov-01
Denver               Den-020                    Rooftop                 0%         100%         100%          50%          9-Nov-01
Denver               Den-021                    Rooftop                 0%         100%         100%          50%          9-Nov-01
Denver               Den-032                    Rooftop                 0%         100%           0%           0%          9-Nov-01
Denver               Den-039                    Rooftop                 0%           0%           0%           0%          9-Nov-01
Denver               Den-047                    Co-Locate               0%           0%           0%           0%          9-Nov-01
Denver               Den-055                    Rooftop                 0%         100%         100%          50%          9-Nov-01
Denver               Den-063                    Rooftop                 0%         100%         100%          50%          9-Nov-01
</TABLE>

                       Lucent Technologies - Proprietary

                                     1 of 8

<PAGE>

                                                         CRICKET AMENDMENT NO. 3
                                          EXHIBIT V- SERVICES TRANSITION SUMMARY

                            CRICKET TRANSITION SITES
                               LUCENT %S PERFORMED

<TABLE>
<CAPTION>
                                                                         LUCENT PERFORMED %
                     ---------------------------------------------------------------------------------------------------------------
                              SITE                   SITE                                                                 TRANSITION
MARKET                       NUMBER                  TYPE         CONSTRUCTION     SA           A&E          CM              DATES
------               -----------------------    --------------    ------------    ----         -----        ----          ----------
<S>                 <C>                        <C>                     <C>        <C>          <C>          <C>           <C>
Denver               Den-076                    Rooftop                 0%         100%           0%          50%          9-Nov-01
Denver               Den-082                    Rooftop                 0%         100%         100%         100%          9-Nov-01
Denver               Den-085                    Rawland                 0%          30%         100%           0%          9-Nov-01
Denver               Den-089                    Rooftop                 0%         100%         100%         100%          9-Nov-01
Denver               Den-099                    Rooftop                 0%         100%           0%           0%          9-Nov-01
Denver               Den-104                    Co-Locate               0%          60%         100%          50%          9-Nov-01
Denver               Den-105                    Rawland                 0%         100%           0%          50%          9-Nov-01
Denver               Den-109                    Rooftop                 0%         100%         100%          50%          9-Nov-01
Denver               Den-142                    Rawland                 0%         100%         100%          50%          9-Nov-01
Denver               Den-143                    Co-Locate               0%         100%         100%          50%          9-Nov-01
Denver               Den-147                    Rooftop                 0%         100%         100%          50%          9-Nov-01
Denver               Den-166                    Rooftop                 0%         100%         100%          50%          9-Nov-01
Denver               Den-167                    Rawland                 0%         100%         100%          50%          9-Nov-01
Denver               Den-171                    Co-Locate               0%         100%         100%          50%          9-Nov-01
Denver               Den-173                    Rooftop                 0%           0%         100%           0%          9-Nov-01
Denver               Den-179                    Co-Locate               0%           0%           0%          50%          9-Nov-01
Fort Collins         fnl014c                    CoLoc                   0%           0%           0%         100%
Fort Collins         fnl023a                    Raw Land                0%         100%         100%         100%
Fort Collins         fnl025b                    Rooftop                 0%         100%         100%         100%
Greeley              gxy024e                    Raw Land                0%          30%         100%         100%
Greeley              gxy041c                    MLA-Coloc               0%          30%         100%         100%
Phoenix              PHX-003A                   Colocation              0%          65%          50%          50%          4-Jun-02
Phoenix              PHX-004C                   Colocation              0%          65%          50%          50%          4-Jun-02
Phoenix              PHX-006B                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-007C                   Raw Land                0%          65%          50%          50%          4-Jun-02
Phoenix              PHX-008B                   Colocation              0%         100%         100%           0%          4-Jun-02
Phoenix              PHX-018B                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-019D                   Raw Land                0%           0%           0%           0%          4-Jun-02
Phoenix              PHX-033A                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-035C                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-037D                   Colocation              0%          65%          50%          50%          4-Jun-02
Phoenix              PHX-045B                   Colocation              0%          65%          50%          50%          4-Jun-02
Phoenix              PHX-051A                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-058B                   Colocation              0%          30%           0%          25%          4-Jun-02
Phoenix              PHX-074D                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-075B                   Raw Land                0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-079C                   Colocation              0%          30%           0%          25%          4-Jun-02
Phoenix              PHX-092A                   Colocation              0%           0%           0%           0%          4-Jun-02
Phoenix              PHX-093A                   Rooftop                 0%          65%          50%          50%          4-Jun-02
Phoenix              PHX-098A                   Colocation              0%           0%           0%           0%          4-Jun-02
Phoenix              PHX-100C                   Rooftop                 0%           0%           0%           0%          4-Jun-02
Phoenix              PHX-109A                   Rooftop                 0%           0%           0%           0%          4-Jun-02
Phoenix              PHX-116A                   Colocation              0%          65%         100%          50%          4-Jun-02
Phoenix              PHX-137A                   Colocation              0%           0%           0%           0%          4-Jun-02
Phoenix              PHX-142C                   Colocation              0%          65%         100%          50%          4-Jun-02
Phoenix              PHX-160G                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-163C                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-168A                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-173C                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-205B                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-221A                   Raw Land                0%         100%         100%          25%          4-Jun-02
</TABLE>

                       Lucent Technologies - Proprietary

                                     2 of 8

<PAGE>

                                                         CRICKET AMENDMENT NO. 3
                                          EXHIBIT V- SERVICES TRANSITION SUMMARY

                            CRICKET TRANSITION SITES
                               LUCENT %S PERFORMED

<TABLE>
<CAPTION>
                                                                         LUCENT PERFORMED %
                     ---------------------------------------------------------------------------------------------------------------
                              SITE                   SITE                                                                 TRANSITION
MARKET                       NUMBER                  TYPE         CONSTRUCTION     SA           A&E          CM              DATES
------               -----------------------    --------------    ------------    ----         -----        ----          ----------
<S>                 <C>                        <C>                     <C>        <C>          <C>          <C>           <C>
Phoenix              PHX-222A                   Colocation              0%          65%         100%          50%          4-Jun-02
Phoenix              PHX-223B                   Colocation              0%         100%           0%          25%          4-Jun-02
Phoenix              PHX-233A                   Colocation              0%         100%           0%          25%          4-Jun-02
Phoenix              PHX-235C                   Colocation              0%         100%         100%          50%          4-Jun-02
Phoenix              PHX-237C                   Raw Land                0%         100%           0%          25%          4-Jun-02
Provo                PVU-002                    Raw Land                0%         100%         100%         100%          4-Jun-02
Pueblo               PUB-005                    Raw Land                0%         100%         100%         100%         5/15/2001
Salt Lake            SLC-051                    MLA CoLoc               0%         100%         100%          50%         4/18/2001
Salt Lake            SLC-058                    Non-MLA CoLoc           0%         100%         100%          50%         4/18/2001
Salt Lake            SLC-071B                   Rooftop                 0%         100%         100%          50%         4/18/2001
Salt Lake            SLC-077                    Rooftop                 0%         100%         100%          50%         4/18/2001
Santa Fe             SAF-005                    MLA CoLoc               0%         100%         100%         100%         4/27/2001
Tuscon               TUS-002                    Raw Land                0%          30%           0%           0%          5/4/2001
Tuscon               TUS-005                    MLA CoLoc               0%         100%         100%         100%          5/4/2001
Tuscon               TUS-011                    Rooftop                 0%          30%           0%           0%          5/4/2001
Tuscon               TUS-020                    Rooftop                 0%         100%         100%         100%          5/4/2001
Tuscon               TUS-038                    Rooftop                 0%         100%         100%         100%          5/4/2001
Charlotte            CLT-038                    MLA CoLoc               0%          65%          95%          55%
Charlotte            CLT-039                    MLA CoLoc               0%         100%         100%         100%
Charlotte            CLT-040                    Raw Land                0%         100%         100%         100%
Charlotte            CLT-048                    Rooftop                 0%          50%          60%          15%
Charlotte            CLT-063                    MLA CoLoc               0%          65%          95%          55%
Charlotte            CLT-083                    MLA CoLoc               0%          60%           0%           0%
Charlotte            CLT-091                    MLA CoLoc               0%          30%           0%           0%
Charlotte            CLT-097                    Colocation              0%          65%          95%          55%
Charlotte            CLT-102                    MLA CoLoc               0%         100%         100%         100%
Charlotte            CLT-103                    Raw Land                0%         100%         100%         100%
Charlotte            CLT-104                    MLA CoLoc               0%          30%          10%          15%
Charlotte            CLT-105                    Rooftop                 0%          30%          10%          15%
Charlotte            CLT-106                    Rooftop                 0%          60%          10%          15%
Macon                MCN-005                                            0%          50%          50%          80%
Columbus             CSG-008C                                           0%          30%          35%          15%
Columbus             CSG-010A                                           0%          95%          95%          30%
Columbus             CSG-014                                            0%         100%         100%         100%
Columbus             CSG-022B                                           0%          30%          35%          15%
Columbus             CSG-023C                                           0%          80%          60%          15%
Columbus             CSG-028                                            0%          30%           0%           0%
Columbus             CSG-029A                                           0%          50%           0%          15%
Columbus             CSG-032A                                           0%          30%           0%          15%
Columbus             CSG-037A                                           0%          80%          35%          15%
Columbus             CSG-038                                            0%          95%          35%          15%
Columbus             CSG-041                                            0%          95%          95%          15%
Columbus             CSG-051                                            0%          80%          60%          15%
Greensboro           GSO-003                    MLA CoLoc               0%         100%         100%         100%         3/14/2001
Greensboro           GSO-010                    Raw Land                0%         100%         100%         100%         3/14/2001
Greensboro           GSO-012                    Raw Land                0%           0%           0%           0%         3/14/2001
Greensboro           GSO-018                    Water Tower             0%         100%          95%          55%         3/14/2001
Greensboro           GSO-050                    Raw Land                0%           0%           0%           0%         3/14/2001
Greensboro           GSO-054                    Raw Land                0%         100%           0%           0%         3/14/2001
Greensboro           GSO-073                    MLA CoLoc               0%         100%          95%          55%         3/14/2001
Hickory              HKY-011                    Transition Site         0%         100%          95%          90%
</TABLE>

                       Lucent Technologies - Proprietary

                                     3 of 8

<PAGE>

                                                         CRICKET AMENDMENT NO. 3
                                          EXHIBIT V- SERVICES TRANSITION SUMMARY

                            CRICKET TRANSITION SITES
                               LUCENT %S PERFORMED

<TABLE>
<CAPTION>
                                                                         LUCENT PERFORMED %
                     ---------------------------------------------------------------------------------------------------------------
                              SITE                   SITE                                                                 TRANSITION
MARKET                       NUMBER                  TYPE         CONSTRUCTION     SA           A&E          CM              DATES
------               -----------------------    --------------    ------------    ----         -----        ----          ----------
<S>                 <C>                        <C>                <C>             <C>          <C>          <C>           <C>
Knoxville            TYS-005                    Non-MLA CoLoc           0%         100%          60%           0%         2/14/2001
Knoxville            TYS-006C                   MLA CoLoc               0%         100%         100%         100%         2/14/2001
Knoxville            TYS-013                    Rooftop                 0%          30%          70%         100%         2/14/2001
Knoxville            TYS-014                    MLA CoLoc               0%          65%          70%         100%         2/14/2001
Knoxville            TYS-034                    MLA CoLoc               0%         100%         100%         100%         2/14/2001
Knoxville            TYS-053C                   Non-MLA CoLoc           0%           0%           0%           0%         2/14/2001
Knoxville            TYS-057                    MLA CoLoc               0%           0%           0%           0%         2/14/2001
Knoxville            TYS-058D                   MLA CoLoc               0%           0%           0%           0%         2/14/2001
Knoxville            TYS-061                    MLA CoLoc               0%           0%           0%           0%         2/14/2001
Knoxville            TYS-065A                   MLA CoLoc               0%           0%           0%           0%         2/14/2001
Knoxville            TYS-074                    Rooftop                 0%          30%          30%         100%         2/14/2001
Knoxville            TYS-076                    Rooftop                 0%          50%          70%         100%         2/14/2001
Knoxville            TYS-077                    Rooftop                 0%          30%          30%         100%         2/14/2001
Knoxville            TYS-078                    Rooftop                 0%          30%          30%         100%         2/14/2001
Knoxville            TYS-079                    Rooftop                 0%          30%          30%         100%         2/14/2001
Jackson              JXN-020                                            0%          25%           0%           0%          2/1/2002
Flint                FNT-005                                            0%          25%          30%          50%          2/1/2002
Flint                FNT-006                                            0%          25%          30%          50%          2/1/2002
Flint                FNT-010                                            0%         100%         100%          80%          2/1/2002
Flint                FNT-013                                            0%          25%          90%          50%          2/1/2002
Flint                FNT-014                                            0%          25%          30%          50%          2/1/2002
Flint                FNT-023                                            0%          25%          30%          50%          2/1/2002
Flint                FNT-032                                            0%          25%          30%          50%          2/1/2002
Flint                FNT-035                                            0%          25%          30%          25%          2/1/2002
Flint                FNT-038                                            0%          25%          50%          50%          2/1/2002
Battle Creek         BTL-008                                            0%          50%         100%          50%          2/1/2002
Kalamazoo            AZO-010                                            0%          25%         100%         100%          2/1/2002
Kalamazoo            AZO-011                                            0%          25%          25%          40%          2/1/2002
Kalamazoo            AZO-024                                            0%         100%         100%          50%          2/1/2002
Kalamazoo            AZO-026                                            0%          25%          25%          25%          2/1/2002
Kalamazoo            AZO-028                                            0%          25%         100%          50%          2/1/2002
Kalamazoo            AZO-030                                            0%          25%           0%          50%          2/1/2002
Kalamazoo            AZO-034                                            0%          25%         100%          50%          2/1/2002
Saginaw              mbs002a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs005a                    Rooftop                 0%         100%         100%          90%          2/1/2002
Saginaw              mbs006a                    MLA CoLoc             100%         100%         100%          90%          2/1/2002
Saginaw              mbs007a                    Water Tower             0%         100%         100%          90%          2/1/2002
Saginaw              mbs008a                    Raw land                0%         100%          95%          90%          2/1/2002
Saginaw              mbs009b                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs010a                    MLA CoLoc               0%         100%          95%          90%          2/1/2002
Saginaw              mbs011a                    MLA CoLoc               0%          25%          25%           0%          2/1/2002
Saginaw              mbs012a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs013a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs014a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs015a                    Rooftop                 0%         100%         100%          90%          2/1/2002
Saginaw              mbs016a                    Rooftop                 0%         100%          95%          90%          2/1/2002
Saginaw              mbs017a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs018b                    Rooftop                 0%         100%          95%          90%          2/1/2002
Saginaw              mbs019a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs020a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs021a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
</TABLE>

                       Lucent Technologies - Proprietary

                                     4 of 8

<PAGE>

                                                         CRICKET AMENDMENT NO. 3
                                          EXHIBIT V- SERVICES TRANSITION SUMMARY

                            CRICKET TRANSITION SITES
                               LUCENT %S PERFORMED

<TABLE>
<CAPTION>
                                                                         LUCENT PERFORMED %
                     ---------------------------------------------------------------------------------------------------------------
                              SITE                   SITE                                                                 TRANSITION
MARKET                       NUMBER                  TYPE         CONSTRUCTION     SA           A&E          CM              DATES
------               -----------------------    --------------    ------------    ----         -----        ----          ----------
<S>                 <C>                        <C>                <C>             <C>          <C>          <C>           <C>
Saginaw              mbs023b                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs024a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs025a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs027a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs029a                    Raw land                0%         100%          25%           0%          2/1/2002
Saginaw              mbs030b                    Raw Land                0%         100%           0%           0%          2/1/2002
Saginaw              mbs031a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs032a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs033b                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs034a                    Water Tower             0%          25%          30%           0%          2/1/2002
Saginaw              mbs035a                    MLA CoLoc               0%          25%           0%           0%          2/1/2002
Saginaw              mbs036d                    MLA CoLoc               0%         100%          75%          90%          2/1/2002
Saginaw              mbs037a                    MLA CoLoc               0%         100%          30%          90%          2/1/2002
Saginaw              mbs038a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs039a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Saginaw              mbs040c                    Raw land                0%          25%          30%           0%          2/1/2002
Saginaw              mbs042d                    MLA CoLoc               0%          25%         100%          90%          2/1/2002
Lansing              lan001d                    Rooftop                 0%         100%         100%          90%          2/1/2002
Lansing              lan002a                    MLA CoLoc             100%         100%         100%          90%          2/1/2002
Lansing              lan003a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan004a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan005a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan006b                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan007e                    Raw Land                0%         100%         100%          90%          2/1/2002
Lansing              lan008a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan009b                    Non-MLA CoLoc           0%         100%         100%          90%          2/1/2002
Lansing              lan010e                    Rooftop                 0%         100%         100%          90%          2/1/2002
Lansing              lan011a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan012a                    Non-MLA CoLoc           0%         100%         100%          90%          2/1/2002
Lansing              lan013a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan014d                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan015a                    Rooftop                 0%         100%         100%          90%          2/1/2002
Lansing              lan016d                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan017b                    Non-MLA CoLoc           0%         100%         100%          90%          2/1/2002
Lansing              lan018a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan019a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan020d                    Non-MLA CoLoc           0%         100%         100%          90%          2/1/2002
Lansing              lan022b                    Rooftop                 0%         100%         100%          90%          2/1/2002
Lansing              lan023a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan024b                    Non-MLA CoLoc           0%         100%         100%          90%          2/1/2002
Lansing              lan025a                    Water Tower             0%         100%         100%          90%          2/1/2002
Lansing              lan026d                    Rooftop                 0%         100%         100%          90%          2/1/2002
Lansing              lan027a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan028a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan029a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan030b                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan031a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan032b                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan033a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan034a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan035a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
</TABLE>

                       Lucent Technologies - Proprietary

                                     5 of 8

<PAGE>

                                                         CRICKET AMENDMENT NO. 3
                                          EXHIBIT V- SERVICES TRANSITION SUMMARY

                            CRICKET TRANSITION SITES
                               LUCENT %S PERFORMED

<TABLE>
<CAPTION>
                                                                         LUCENT PERFORMED %
                     ---------------------------------------------------------------------------------------------------------------
                              SITE                   SITE                                                                 TRANSITION
MARKET                       NUMBER                  TYPE         CONSTRUCTION     SA           A&E          CM              DATES
------               -----------------------    --------------    ------------    ----         -----        ----          ----------
<S>                 <C>                        <C>                     <C>        <C>          <C>          <C>           <C>
Lansing              lan036a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan038d                    Raw Land                0%         100%         100%          90%          2/1/2002
Lansing              lan039a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan040a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan041a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan042a                    Non-MLA CoLoc           0%         100%         100%          90%          2/1/2002
Lansing              lan043e                    Raw Land                0%         100%         100%          90%          2/1/2002
Lansing              lan044a                    Water Tower             0%         100%         100%          90%          2/1/2002
Lansing              lan046a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan047a                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Lansing              lan048a                    Non-MLA CoLoc           0%         100%         100%          90%          2/1/2002
Lansing              lan049b                    MLA CoLoc               0%         100%         100%          90%          2/1/2002
Muskegon             mkg001a                    Raw Land                0%         100%          80%          90%          2/1/2002
Muskegon             mkg002a                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg003d                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg004a                    Co-lo                   0%         100%          80%          90%          2/1/2002
Muskegon             mkg005a                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg006c                    Raw Land                0%         100%          80%          90%          2/1/2002
Muskegon             mkg007b                    Raw Land                0%         100%          80%          90%          2/1/2002
Muskegon             mkg008a                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg009a                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg010a                    WT                      0%         100%         100%          90%          2/1/2002
Muskegon             mkg011a                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg012a                    Rooftop                 0%         100%         100%          90%          2/1/2002
Muskegon             mkg013a                    Rooftop                 0%         100%         100%          90%          2/1/2002
Muskegon             mkg015b                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg016a                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg017a                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg018a                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg019a                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg020b                    Raw Land                0%         100%          80%          90%          2/1/2002
Muskegon             mkg021a                    Raw Land                0%         100%          80%          90%          2/1/2002
Muskegon             mkg022a                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg023b                    Co-lo                   0%         100%         100%          90%          2/1/2002
Muskegon             mkg024a                    WT                      0%         100%         100%          90%          2/1/2002
Muskegon             mkg028c                                            0%           0%          10%           0%          2/1/2002
Muskegon             mkg050a                                            0%           0%          10%           0%          2/1/2002
Grand Rapids         grr001a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr002b                    COLO                    0%          40%         100%         100%          2/1/2002
Grand Rapids         grr003a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr004b                    WT                      0%          40%         100%         100%          2/1/2002
Grand Rapids         grr006a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr007a                    WT                      0%         100%         100%         100%          2/1/2002
Grand Rapids         grr008c                    COLO                    0%          60%         100%         100%          2/1/2002
Grand Rapids         grr010b                    RT                      0%         100%          80%           0%          2/1/2002
Grand Rapids         grr011b                    RAW LAND                0%         100%         100%         100%          2/1/2002
Grand Rapids         grr012c                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr013a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr014a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr015a                    WT                      0%         100%         100%         100%          2/1/2002
Grand Rapids         grr016a                    COLO                    0%         100%          20%           0%          2/1/2002
</TABLE>

                       Lucent Technologies - Proprietary

                                     6 of 8
<PAGE>

                                                         CRICKET AMENDMENT NO. 3
                                          EXHIBIT V- SERVICES TRANSITION SUMMARY

                            CRICKET TRANSITION SITES
                               LUCENT %S PERFORMED

<TABLE>
<CAPTION>
                                                                         LUCENT PERFORMED %
                     ---------------------------------------------------------------------------------------------------------------
                              SITE                   SITE                                                                 TRANSITION
MARKET                       NUMBER                  TYPE         CONSTRUCTION     SA           A&E          CM              DATES
------               -----------------------    --------------    ------------    ----         -----        ----          ----------
<S>                 <C>                        <C>                     <C>        <C>          <C>          <C>           <C>
Grand Rapids         grr017a                    WT                      0%          60%         100%           0%          2/1/2002
Grand Rapids         grr018a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr019a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr020a                    COLO                  100%         100%         100%         100%          2/1/2002
Grand Rapids         grr021a                    COLO                    0%          40%         100%         100%          2/1/2002
Grand Rapids         grr022a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr023a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr024a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr025a                    COLO                    0%         100%         100%           0%          2/1/2002
Grand Rapids         grr026a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr027d                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr028c                    RAW LAND                0%         100%         100%         100%          2/1/2002
Grand Rapids         grr029a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr030a                    WT                      0%         100%         100%         100%          2/1/2002
Grand Rapids         grr031a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr032a                    Raw Land                0%          40%           0%           0%          2/1/2002
Grand Rapids         grr033c                    WT                      0%         100%         100%         100%          2/1/2002
Grand Rapids         grr034a                    WT                      0%         100%         100%         100%          2/1/2002
Grand Rapids         grr035a                    WT                      0%         100%         100%         100%          2/1/2002
Grand Rapids         grr036b                    COLO                    0%          40%         100%         100%          2/1/2002
Grand Rapids         grr038a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr040a                    Rooftop                 0%          40%          20%           0%          2/1/2002
Grand Rapids         grr041b                    COLO                    0%          60%          60%         100%          2/1/2002
Grand Rapids         grr042a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr043a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr044a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr045a                    COLO                    0%         100%         100%           0%          2/1/2002
Grand Rapids         grr046b                    WT                      0%          60%         100%         100%          2/1/2002
Grand Rapids         grr048a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr049a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr050a                    RAW LAND                0%         100%         100%         100%          2/1/2002
Grand Rapids         grr051a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr052b                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr053a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr055a                    COLO                  100%         100%         100%         100%          2/1/2002
Grand Rapids         grr057a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr058a                    COLO                    0%         100%           0%         100%          2/1/2002
Grand Rapids         grr059a                    COLO                    0%          40%           0%           0%          2/1/2002
Grand Rapids         grr060a                    COLO                    0%          40%           0%         100%          2/1/2002
Grand Rapids         grr061a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr062a                    WT                      0%         100%         100%         100%          2/1/2002
Grand Rapids         grr063a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr064a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr065b                    Rooftop                 0%         100%         100%         100%          2/1/2002
Grand Rapids         grr066b                    COLO                    0%          60%         100%           0%          2/1/2002
Grand Rapids         grr067a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr068b                    COLO                    0%          60%         100%         100%          2/1/2002
Grand Rapids         grr069b                    Rooftop                 0%          60%         100%         100%          2/1/2002
Grand Rapids         grr070a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr071a                    COLO                    0%         100%         100%         100%          2/1/2002
Grand Rapids         grr072a                    COLO                  100%         100%         100%         100%          2/1/2002
</TABLE>

                       Lucent Technologies - Proprietary

                                     7 of 8

<PAGE>

                                                         CRICKET AMENDMENT NO. 3
                                          EXHIBIT V- SERVICES TRANSITION SUMMARY

                            CRICKET TRANSITION SITES
                               LUCENT %S PERFORMED

<TABLE>
<CAPTION>
                                                                         LUCENT PERFORMED %
                     ---------------------------------------------------------------------------------------------------------------
                              SITE                   SITE                                                                 TRANSITION
MARKET                       NUMBER                  TYPE         CONSTRUCTION     SA           A&E          CM              DATES
------               -----------------------    --------------    ------------    ----         -----        ----          ----------
<S>                 <C>                        <C>                     <C>        <C>          <C>          <C>           <C>

</TABLE>

----------

* does not include Annex, Save or Evansville

                       Lucent Technologies - Proprietary

                                     8 of 8<PAGE>

                                                                 EXHIBIT 10.15.4

                  AMENDMENT NO. 4 TO THE AMENDED AND RESTATED
                   SYSTEM EQUIPMENT PURCHASE AGREEMENT BETWEEN
            LUCENT TECHNOLOGIES INC. AND CRICKET COMMUNICATIONS, INC.

        THIS AMENDMENT NO. 4 (this "Amendment" or "Amendment No. 4") to the
Contract (as defined below) between CRICKET COMMUNICATIONS, INC., a Delaware
corporation (the "Owner" or "Cricket") and LUCENT TECHNOLOGIES INC., a Delaware
corporation (the "Vendor" or "Lucent"), is made effective as of this 10th day of
September, 2002 ("Effective Date").

                                    RECITALS

        WHEREAS, the Owner and Vendor entered into that certain Amended and
Restated System Equipment Purchase Agreement, dated as of June 30, 2000, as
amended by Amendment No. 1, effective March 22, 2002 ("Amendment No. 1"), and
Amendment No. 2, effective March 22, 2002 ("Amendment No. 2"), and Amendment No.
3, effective March 22, 2002 ("Amendment No. 3"); collectively (the "Contract");
and

        WHEREAS, in Amendment No. 1, the Owner and Vendor modified certain
provisions of Section 24.7 of the Contract to provide for certain rights of
Vendor upon the occurrence of certain events; and

        WHEREAS, the Owner and Vendor desire to provide for additional rights of
Vendor with respect to the fulfillment of existing Purchase Orders, and to amend
the provisions of the Contract as they pertain to the acceptance of future
Purchase Orders, as set forth in more detail in this Amendment; and

        WHEREAS, the Owner and Vendor desire to amend the Contract as set forth
herein.

                                   AGREEMENT

        NOW, THEREFORE, in consideration of the mutual promises and covenants
set forth in this Amendment, the Owner and Vendor hereby agree as follows:

A.  AMENDMENTS TO CONTRACT

        1.     Section 3 of the Contract, titled "Purchase Orders and
Schedules," is deleted in its entirety and replaced by the following:

                      3.1 Purchase Orders. (a) The Owner may deliver Purchase
               Orders to the Vendor at any time and from time to time during the
               Contract Term for Products, Services, Software or other items of
               Work to be provided by the Vendor. Such Purchase Orders shall be
               sent to the Vendor either by certified mail, electronic
               transmission or another mutually acceptable manner to the address
               specified in Exhibit L of the Contract. All Purchase Orders shall
               be governed by the terms and conditions of the Contract, unless
               otherwise agreed by the parties in writing. Each Purchase Order
               shall specify, in reasonable detail, the Products, Services,
               Software or other items of Work to be performed by the Vendor.

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

                                   Page 1 of 5
<PAGE>

                      (b) Every Purchase Order tendered to Vendor by Owner must
               be accompanied by full payment of the prices, fees and charges
               for the Products, Services, Software or Work referenced in such
               Purchase Order, including all such charges and fees as
               transportation charges, taxes, duties and travel and living
               expenses, etc. Owner may request Vendor to quote such prices,
               fees and charges in advance of Owner's submission of the Purchase
               Order, however, tender of such a quote by Vendor shall not
               constitute the advance acceptance of the Purchase Order by
               Vendor. If the price of any of the ordered Products, Services,
               Software or Work or other charges or fees (such as transportation
               charges or travel and living expenses, etc.) cannot be determined
               at the time that Owner submits its Purchase Order to Vendor, or
               at such time that Vendor accepts such Purchase Order as provided
               in Section 3.3(a) below, Vendor shall invoice Owner for such
               items in accordance with the provisions of Section 5.3 of the
               Contract.

                      3.2 Delivery under the Contract. The Vendor shall complete
               the Work specified in each Purchase Order in accordance with the
               terms and conditions of this Contract.

                      3.3 Order Acceptance. (a) All Purchase Orders submitted by
               Owner shall be subject to the written acceptance by Vendor, in
               each instance. Vendor shall acknowledge the date of the order
               receipt either in writing or electronic data interface format,
               and list its committed ship dates by Products, Services, Software
               or Work. The acknowledged date of Purchase Order receipt by
               Vendor is the price-effective date for the Product, Services,
               Software or Work. In the absence of Vendor's written or
               electronic acceptance as provided herein within fourteen (14)
               days of Owner's tender of each Purchase Order, the Purchase
               Order(s) shall be deemed rejected.

                      (b) No provision or data on any Purchase Order or
               contained in any documents attached to or referenced in any
               Purchase Order, or any subordinate document (such as shipping
               releases), which is inconsistent with the terms of this Contract
               shall be binding, except data necessary for Vendor to fill the
               Purchase Order. All such other data and provisions are hereby
               rejected. Electronic Purchase Orders tendered by Owner, and
               subsequently accepted by Vendor as provided in Section 3.3(a)
               above, shall be binding on Owner notwithstanding the absence of a
               signature.

                      (c) Changes made by Owner to a Purchase Order accepted by
               Vendor as provided in Section 3.3(a) above shall be treated as a
               separate Purchase Order subject to Vendor's acceptance unless the
               parties expressly agree otherwise in writing. If any such change
               affects Vendor's ability to meet its obligations under the
               original Purchase Order, any price, shipment date, or completion
               date quoted by Vendor with respect to such original order is
               subject to change and shall be addressed pursuant to the Change
               Order provisions below in Section 11.

                      3.4 Forecasts. Owner shall provide to Vendor regular
               forecasts of Owner's annual Product and Services needs. If the
               quantities ordered are more than 25% greater

                                   Page 2 of 5
<PAGE>

               than forecast quantities, Vendor shall be permitted a reasonable
               extension of time to fulfill such orders and achieve the
               Milestones required of Vendor hereunder.

                      3.5 Deployment Plans and Milestones. The deployment plans
               and intervals, together with the key Milestones, order intervals,
               in respect of each System, are set forth in Exhibit L and in
               Exhibit S.

                      3.6 Inventory Control and Bar-coding. Vendor shall, at no
               additional charge, pack and mark shipping containers in
               accordance with its standard practices for domestic shipments.
               Where in order to meet Owner's requests, Vendor packs and/or is
               required to mark shipping cartons in accordance with Owner's
               specifications, Vendor shall invoice Owner additional charges for
               such packing and/or marking. Vendor shall (a) enclose a packing
               memorandum with each shipment and, if the shipment contains more
               than one package, identify the package containing the memorandum,
               and (b) mark Products as applicable for identification in
               accordance with Vendor's marking specifications (for example,
               model/serial number and month, year of manufacture).

        2.     Section 5.3 of the Contract, titled "Invoicing and Payment," is
deleted in its entirety and replaced by the following:

                      5.3 Invoicing and Payment: (a) Vendor may invoice Owner
               the applicable price(s), charge(s) and fee(s) for any of the
               Products, Services, Software or Work which cannot be determined
               at the time that Owner submits its Purchase Order to Vendor, or
               at the time Vendor accepts such Purchase Order, according to the
               following schedules or as otherwise mutually agreed to in writing
               by Owner and Vendor:

                      (a) one hundred percent (100%) of the applicable price(s),
                      charge(s) and fee(s) for engineering Services which cannot
                      be determined in advance may be invoiced upon completion
                      of such Services;

                      (b) one hundred percent (100%) of the applicable price(s),
                      charge(s) and fee(s) for other Services which cannot be
                      determined in advance may be invoiced monthly in respect
                      of Services rendered during the prior month; and

                      (c) one hundred percent (100%) of the applicable Price(s),
                      charge(s) and fee(s) for any other charges which cannot be
                      determined in advance may be invoiced following the time
                      that they are determined.

                      (b) Vendor invoices shall be issued on a line item basis
               to approximate Owner's Purchase Orders. Such Vendor invoices
               shall also indicate the relevant Owner Purchase Order number.
               Owner shall pay Vendor all invoiced amounts, plus taxes, less any
               disputed items, within thirty (30) days from the date of Vendor's
               invoice. Delinquent payments are subject to a late payment charge
               at an annual rate of [***] per year, or portion thereof, of the
               amount due. However, such late payment charge shall not exceed
               any maximum lawful charges.

[*] CERTAIN MATERIAL (INDICATED BY AN ASTERISK) HAS BEEN OMITTED FROM THIS
DOCUMENT PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL
HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

                                   Page 3 of 5
<PAGE>

                      (c) Owner shall notify Vendor of any disputed invoice
               amounts in writing within thirty (30) days from the date of the
               invoice. Any disputed amounts which are subsequently determined
               to be valid are due for payment based upon the original invoice
               date and shall be subject to a retroactive late payment charge
               based upon such original invoice due date.

        3.     The unnumbered paragraph which follows Section 24.7(d) of the
Contract (which is the subject of Section 4 of Amendment No. 1) is deleted in
its entirety and replaced by the following new subparagraph 24.7(e):

                      (e) Notwithstanding the existence or absence of any one or
               more of the events described in subsections 24.7(a) through (d)
               above, Vendor, at its sole option, may at any time during the
               Contract Term, take any or all of the following actions with
               respect to any and all Purchase Orders or other contracts for
               Products, Services, Software or Work which have not been
               submitted by Owner and thereafter accepted by Vendor as provided
               by Section 3 (as amended by Amendment No. 4) of this Contract:
               (i) suspend all performance upon any pending Purchase Order; (ii)
               suspend shipment of all Products and Software; (iii) suspend
               performance of all Services and Work; (iv) require revised
               payment terms for the continued provision by Vendor of Products,
               Services, Software and Work; and (v) cancel any outstanding
               Purchase Orders for Products, Services, Software and Work.
               Nothing in this subparagraph (e) shall allow Vendor to suspend
               its performance obligations under Sections 2.8, 12, 13, 14, 15,
               16.3, 18, 19, 20, 23, 24 or 26 of this Contract.

B.      GENERAL TERMS GOVERNING THIS AMENDMENT

        1.     Interpretation: Capitalized terms not otherwise defined herein,
including those used in any attachments hereto, shall have the same meanings as
set forth in the Contract. In the event of any conflict between the terms of
this Amendment and the Contract or any other written agreements between the
parties, the terms of this Amendment shall prevail.

        2.     Full Force and Effect: This Amendment shall become effective as
of the Effective Date, and except as expressly modified in this Amendment, the
Contract, shall remain unmodified and in full force and effect.

        3.     Entire Agreement: This Amendment, together with the Contract,
constitutes the entire agreement between the parties with respect to the subject
matter thereof. No modifications, alterations or waivers of any provision
contained herein shall be binding on the parties hereto unless executed after
the date hereof and evidenced in writing signed by duly authorized
representatives of both parties.

        IN WITNESS WHEREOF, the parties hereto have caused this Amendment No. 4
to be executed by their duly authorized representatives effective as of the date
first set forth above.

                                   Page 4 of 5
<PAGE>

"VENDOR" OR "LUCENT"                          "OWNER" OR "CRICKET"
LUCENT TECHNOLOGIES INC.,                     CRICKET COMMUNICATIONS, INC.,
a Delaware corporation                        a Delaware corporation

By: /s/ FRANK A. DELCORE                      By: /s/ S.D. HUTCHESON
    ----------------------------------            -----------------------------

Name: Frank A. DelCore                        Name: S.D. Hutcheson
      --------------------------------

Title: Director                               Title: Senior Vice President and
       -------------------------------                Chief Financial Officer

Date: 9/13/02                                 Date: September 13, 2002
      --------------------------------

                                   Page 5 of 5

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00044-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00044-of-00352.parquet"}]]