Document:

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CINGULAR WIRELESS LLC
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EXHIBITS - Work Order No. 03027350 Between Cingular Wireless and SBC
           Services, Inc.

                                                                   EXHIBIT 10.63

                                   Work Order

                                  No. 03027350

                                     Between

                             Cingular Wireless, LLC

                                       And

                               SBC Services, Inc.

<PAGE>
CINGULAR WIRELESS LLC
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EXHIBITS - Work Order No. 03027350 Between Cingular Wireless and SBC
           Services, Inc.

                                                                   EXHIBIT 10.63

                                                       Agreement Number 03027350

                                   WORK ORDER

This Work Order, effective on the date when signed by the last party ("Effective
Date"), is by and between Cingular Wireless, LLC ("Cingular"), a Delaware
limited liability company, and SBC Services, Inc. ("SBC"), a Delaware
corporation, and shall be governed pursuant to the terms and conditions of
General Agreement Number 01018518 (the "General Agreement"). Any terms and
conditions in this Work Order that modify or change the terms and conditions of
Agreement Number 01018518 shall apply to this Work Order only.

1.       DESCRIPTION OF MATERIAL AND/OR SERVICES:

         Cingular will provide wireless voice Services, Material for wireless
         voice Services, and the logistical Services for maintaining inventory,
         shipping, provisioning, receiving, and billing for the wireless voice
         Services and Material. These Services and Materials will be provided
         for the SBC Midwest region in Ohio, Indiana, and Illinois. The Service
         and Materials are specified in Appendix A.

2.       ENTIRE AGREEMENT

         The terms contained in the General Agreement, this Work Order and in
         any other Work Orders, including all appendices and subordinate
         documents attached to or referenced in the General Agreement, this Work
         Order or in any other Work Orders, constitute the entire integrated
         agreement between Cingular and SBC with regard to the subject matter
         contained herein. This Work Order supersedes all prior oral and written
         communications, agreements, and understandings of the parties, if any,
         with respect hereto. This includes but is not limited to the Agreement
         by and between "Southwestern Bell Mobile Systems, LLC, d/b/a Cingular
         Wireless" and "Illinois Bell Telephone Company" which became effective
         on 16 October, 2001, and the Agreement by and between "Ameritech
         Network Services" and "Ameritech Mobile Communications, Inc. on behalf
         of the Cincinnati SMSA Limited Partnership" which became effective on 1
         May, 1998. Acceptance of Material or Services, payment or any inaction
         by SBC, shall not constitute SBC's consent to or acceptance of any
         additional or different terms from those stated in this Work Order.
         Estimates furnished by SBC shall not constitute commitments.

         No oral promises or statement induced either party to enter into this
         Work Order and the parties agree that the only modification or
         amendment of the Work Order's express language is through a subsequent
         written document signed by the parties.

3.       TERM OF AGREEMENT:

    a.   This Work Order is effective on the date when signed by the last party
         ("Effective Date") and, unless Terminated or Canceled as provided
         pursuant to the terms and conditions of General Agreement Number
         01018518, shall remain in effect for a term ending on August 31, 2006
         (the "Initial Term"). The Parties may extend the term of this Work
         Order by mutual agreement in writing.

                             PROPRIETARY INFORMATION

THE INFORMATION CONTAINED IN THIS AGREEMENT IS NOT FOR USE OR DISCLOSURE OUTSIDE
  SBC, CINGULAR, THEIR AFFILIATES AND THEIR THIRD PARTY REPRESENTATIVES, EXCEPT
               UNDER WRITTEN AGREEMENT BY THE CONTRACTING PARTIES.

                                        2
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CINGULAR WIRELESS LLC
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EXHIBITS - Work Order No. 03027350 Between Cingular Wireless and SBC
           Services, Inc.

                                                                   EXHIBIT 10.63

                                                       Agreement Number 03027350

    b.   The Termination, Cancellation or expiration of this Work Order shall
         not affect the obligations of either Party to the other Party pursuant
         to any Order previously executed hereunder, and the terms and
         conditions of this Work Order shall continue to apply to such Order as
         if this Work Order were still in effect.

4.       PERSONNEL TO PERFORM THE SERVICES:

         Cingular will provide adequate personnel to provide logistical Services
         for maintaining inventory, shipping, provisioning, and receiving for
         the wireless voice Services and Material.

5.       LOCATION:

         Cingular personnel who provide the Services and Material will be
         located in Cingular locations in Ohio, Indiana, or Illinois or as
         selected by Cingular.

6.       PRICES:

         Cingular will charge SBC for the wireless Services and Material as
         detailed in Appendix B.

7.       PAYMENT:

         SBC will make payment in accordance with the General Agreement.

8.       INVOICES/BILLING INFORMATION:

         Invoices and billing information are to be sent:

         SBC Midwest
         2000 West Ameritech Center Drive
         Location #4E 14
         Hoffman Estates, IL 60196
         Attn: Assoc Dir - Ntwk Svcs Regulatory Supt
         Phone: (847)248-1404

9.       PROJECT MANAGER/POINT OF CONTACT:

         The project manager and/or point of contact shall be:

         SBC Midwest
         2000 West Ameritech Center Drive
         Location # 4E14
         Hoffman Estates, IL 60196
         Attn: Assoc Dir - Ntwk Svcs Regulatory Supt
         Phone: (847)248-1404

10.      NOTICES:

                             PROPRIETARY INFORMATION

THE INFORMATION CONTAINED IN THIS AGREEMENT IS NOT FOR USE OR DISCLOSURE OUTSIDE
  SBC, CINGULAR, THEIR AFFILIATES AND THEIR THIRD PARTY REPRESENTATIVES, EXCEPT
               UNDER WRITTEN AGREEMENT BY THE CONTRACTING PARTIES.

                                        3
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CINGULAR WIRELESS LLC
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EXHIBITS - Work Order No. 03027350 Between Cingular Wireless and SBC
           Services, Inc.

                                                                   EXHIBIT 10.63

                                                       Agreement Number 03027350

         Except as otherwise provided in this Work Order, all notices or other
         communications hereunder shall be deemed to have been duly given when
         made in writing and either 1) delivered in person, or 2) when received,
         if provided by an overnight or similar delivery Service, or 3) when
         received, if deposited in the United States Mail, postage prepaid,
         return receipt requested, and addressed as follows:

         IF TO CINGULAR:

                           Cingular Wireless, LLC
                           7330 San Pedro Plaza
                           9th Floor
                           San Antonio, TX 78216
                           Attn: Key Account Manager
                           Phone: (214)478-4733

                  WITH A COPY TO:

                           Cingular Wireless, LLC
                           5565 Glenridge Connector
                           Atlanta, Georgia 30342-4756
                           Attn: General Counsel

         IF TO SBC:

                           SBC Services, Inc.
                           2000 W. Ameritech Center Drive
                           Location # 3A09B
                           Hoffman Estates, IL 60196
                           Attn: SCM - IT Hardware/Office Technology
                           Phone: (847)248-8334

                  WITH A COPY TO:

                           SBC Midwest
                           2000 West Ameritech Center Drive
                           Location #4E 14
                           Hoffman Estates, IL 60196
                           Attn: Assoc Director - Network Services Regulatory
                           Support
                           Phone: (847)248-1404

The address to which notices or communications may be given by either party may
be changed by written notice given by such party to the other pursuant to this
paragraph entitled "Notices".

                             PROPRIETARY INFORMATION

THE INFORMATION CONTAINED IN THIS AGREEMENT IS NOT FOR USE OR DISCLOSURE OUTSIDE
  SBC, CINGULAR, THEIR AFFILIATES AND THEIR THIRD PARTY REPRESENTATIVES, EXCEPT
               UNDER WRITTEN AGREEMENT BY THE CONTRACTING PARTIES.

                                        4
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CINGULAR WIRELESS LLC
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EXHIBITS - Work Order No. 03027350 Between Cingular Wireless and SBC
           Services, Inc.

                                                                   EXHIBIT 10.63

                                                       Agreement Number 03027350

IN WITNESS WHEREOF, the Parties have caused this Agreement to be executed, which
may be in duplicate counterparts, each of which will be deemed to be an original
instrument, as of the date the last Party signs.

CINGULAR WIRELESS, LLC               SBC SERVICES, INC.

By:__________________________        By:_________________________________

Printed Name:                        Printed Name: Ronald P. Watt

Title:                               Title: Executive Director - I/T Contracting

Date:___________                     Date:_______________

                             PROPRIETARY INFORMATION

THE INFORMATION CONTAINED IN THIS AGREEMENT IS NOT FOR USE OR DISCLOSURE OUTSIDE
  SBC, CINGULAR, THEIR AFFILIATES AND THEIR THIRD PARTY REPRESENTATIVES, EXCEPT
               UNDER WRITTEN AGREEMENT BY THE CONTRACTING PARTIES.

                                        5
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CINGULAR WIRELESS LLC
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EXHIBITS - Work Order No. 03027350 Between Cingular Wireless and SBC
           Services, Inc.

                                                                   EXHIBIT 10.63

                                                       Agreement Number 03027350

                       APPENDIX A - MATERIAL AND SERVICES

1.       CINGULAR PROVIDED MATERIALS:

         Cingular shall provide only the following Materials: digital/analog
         wireless handset, battery for wireless handset, A/C power charger,
         pre-paid return shipping label, and letter summarizing Services
         provided, Material return instructions, and Cingular customer care
         contacts. Pricing for digital/analog handset, battery for wireless
         handset, and A/C power charge is detailed in Appendix B.

2.       CINGULAR PROVIDED SERVICES:

         Cingular shall provide only the following Services: storage of
         digital/analog wireless devices, batteries for wireless handsets, A/C
         power chargers, and summarizing letters; shipping of wireless Material
         to include receiving SBC orders for delivery, overnight delivery,
         tracking of deliveries; provisioning of wireless Services to include
         activations, suspensions, and cancellations; receiving of wireless
         Services to include receiving SBC order for recovery, standard United
         States Postal Service (USPS) recovery, tracking of recoveries.

3.       STORAGE OF MATERIAL

         Cingular wall provide storage of Material at a Cingular location. The
         storage of this devices will include an inventory log to track location
         of Material. Cingular will also track the dates that the Material was
         either stored in inventory or removed from inventory. Cingular will
         utilize a first-in-first-out rotation process when managing the
         inventory of Material that Cingular is storing as part of this
         Agreement.

4.       SHIPPING OF MATERIAL

         Cingular will provide overnight delivery of Material to the SBC ordered
         location. Cingular will ship, via over night delivery, SBC orders that
         are received by 2:00 PM Central Time. The overnight delivery will be
         for the next business day morning. The cost of this overnight delivery
         will be incurred by Cingular based on the Services provided and priced
         in Appendix B. Cingular will track the delivery locations and dates of
         delivery.

5.       PROVISIONING OF WIRELESS SERVICES

         Cingular will keep the wireless Services suspended while the Material
         is in storage. Upon receiving a SBC order to ship Material to a
         location, Cingular will activate the wireless Service. The wireless
         Service will remain active until Cingular receives an SBC order to
         recover Material. At that time, Cingular will suspend Service. In the
         event SBC needs to add or reduce the quantity of Material in storage,
         Cingular will activate or cancel wireless Service as requested by SBC.
         The minimum number of wireless Service to remain active for the
         application is detailed in Appendix B.

6.       RECOVERING OF MATERIAL

         Cingular will track the recovery of Material after receipt of an order
         placed by SBC for the Material to be returned to Cingular. A Letter of
         Summary will provide directions to the SBC customer on when to return
         Material to Cingular. Cingular will notify SBC, at e-mail address
         "cell_opt_exclude@msg.ameritech.com" if Cingular has not received the
         Material with

                             PROPRIETARY INFORMATION

THE INFORMATION CONTAINED IN THIS AGREEMENT IS NOT FOR USE OR DISCLOSURE OUTSIDE
  SBC, CINGULAR, THEIR AFFILIATES AND THEIR THIRD PARTY REPRESENTATIVES, EXCEPT
               UNDER WRITTEN AGREEMENT BY THE CONTRACTING PARTIES.

                                        6
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CINGULAR WIRELESS LLC
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EXHIBITS - Work Order No. 03027350 Between Cingular Wireless and SBC
           Services, Inc.

                                                                   EXHIBIT 10.63

                                                       Agreement Number 03027350

         fourteen (14) days after the receipt of the SBC order to recover the
         Material. If Cingular has not received the Material after thirty (30)
         days from the receipt of the SBC order to recover the Material,
         Cingular will replace the Material and will charge SBC the cost of new
         Material based on the pricing in Appendix B.

7.       LETTER OF SUMMARY

         Cingular will provide a letter with each shipment to an SBC customer
         that summaries the use of the Material and wireless Service. The
         content of the letter will be jointly agreed to by both Parties but
         will include at a minimum the directions on when to return Material to
         Cingular.

8.       CUSTOMER CARE

         Cingular will provide access to Cingular's consumer customer care for
         the SBC customer receiving the Material and wireless Service. The
         contact number for this customer care is 1-866-CINGULAR. Cingular will
         work in good faith to provide the SBC customer with technical
         troubleshooting support and wireless Material operational support.
         Cingular will use commercially reasonable efforts to identify and
         remove any features that have been added to the wireless Service by the
         SBC customer so that no additional charges will be incurred by SBC.
         This-does not release SBC from liability for such additional charges if
         they are added to the wireless Service by the SBC customer.

9.       SBC ORDERS

         SBC will provide orders for wireless Material and Services to Cingular
         via email. These orders shall include shipping, and recovery of
         Material from SBC customers. The following email addresses will be used
         for receiving orders from SBC:

         1. Ameritechrecoveryprogram-il@Cingular.com

         2. Ameritechrecoveryprogram-indy/oh@Cingular.com

         The order to ship Material must include the following information:

         1. SBC Customer Name

         2. SBC Customer Address (no PO Boxes allowed)

         3. SBC Customer Phone Number

         The order to recover Material must include the following information:

         1. SBC Customer Name

         2. SBC Customer Address (no PO Boxes allowed)

         3. SBC Customer Phone Number

                             PROPRIETARY INFORMATION

THE INFORMATION CONTAINED IN THIS AGREEMENT IS NOT FOR USE OR DISCLOSURE OUTSIDE
  SBC, CINGULAR, THEIR AFFILIATES AND THEIR THIRD PARTY REPRESENTATIVES, EXCEPT
               UNDER WRITTEN AGREEMENT BY THE CONTRACTING PARTIES.

                                        7
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CINGULAR WIRELESS LLC
--------------------------------------------------------------------------------
EXHIBITS - Work Order No. 03027350 Between Cingular Wireless and SBC
           Services, Inc.

                                                                   EXHIBIT 10.63

                                                       Agreement Number 03027350

                              APPENDIX B - PRICING

1.       MATERIAL

         Currently, there are five hundred (500) handsets being held in storage
         by Cingular for SBC. The following pricing for Material will be for new
         activations and upgrades associated with increasing the quantity of
         Material in storage beyond the current five hundred (500) handsets
         being held in storage by Cingular for SBC. New activations are
         considered new mobile numbers that are activated by Cingular through an
         order placed by SBC. Upgrades are considered replacing wireless
         handsets for an existing mobile number that has completed 12-months of
         wireless Service from date of activation or has completed 12-months of
         wireless Service from date of a previous upgrade as part of this Work
         Order. It is agreed by the parties that handsets will consist of the
         lowest cost handset, associated battery, and A/C charger that Cingular
         has available for sale at that time, and within that Cingular market
         area.

<TABLE>
<CAPTION>
MATERIAL                DESCRIPTION                PRICE
--------                -----------                -----
<S>             <C>                                <C>
Handset           Analog/Digital Handset           $19.99
Battery                NiMH Battery                  Free
A/C Charger     Standard Travel A/C Charger          Free
</TABLE>

         The following pricing will be for replacement of existing Material for
         an already existing mobile number that is not considered an upgrade.

<TABLE>
<CAPTION>
MATERIAL                DESCRIPTION                PRICE
--------                -----------                -----
<S>             <C>                                <C>
Handset           Analog/Digital Handset           $100
Battery                NiMH Battery                $ 40
A/C Charger     Standard Travel A/C Charger        $ 15
</TABLE>

2.       SERVICES

         The following prices are for Services provided to an SBC customer
         covered under this Work Order. The SBC discount provided under terms of
         Agreement Number # 01020972 will be applied to individual rate plans
         for Services. The SBC discount provided under terms of Agreement Number
         # 01020972 is not available on Pooled rate plans. In the event that new
         Service is ordered by SBC and then the Service is deactivated,
         applicable termination fees will be applied by Cingular pursuant to
         Agreement Number # 01020972.

<TABLE>
<CAPTION>
                                                                               COST PER     COST PER       COST FOR
                                                                  COST PER      MINUTE       MINUTE         POOLED
       RATE PLAN                      DESCRIPTION                   USER       OVERAGE      ROAMING        MINUTES
       ---------                      -----------                 --------     -------      -------        --------
<S>                         <C>                                   <C>          <C>          <C>            <C>
Preferred Nation Pooled     5,000 minute of use per month. No     $10 per       $0.35        $0.69         $400 per
                            long distance fees.                    month                                     month
Preferred Nation Pooled     11,000 minutes of use per month.      $10 per       $0.35        $0.69         $880 per
                            No long distance fees.                 month                                     month
Preferred Nation Pooled     17,500 minutes of use per month.      $10 per       $0.25        $0.69         $1,400 per
                            No long distance fees.                 month                                      month
</TABLE>

                             PROPRIETARY INFORMATION

THE INFORMATION CONTAINED IN THIS AGREEMENT IS NOT FOR USE OR DISCLOSURE OUTSIDE
  SBC, CINGULAR, THEIR AFFILIATES AND THEIR THIRD PARTY REPRESENTATIVES, EXCEPT
               UNDER WRITTEN AGREEMENT BY THE CONTRACTING PARTIES.

                                        8
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CINGULAR WIRELESS LLC
--------------------------------------------------------------------------------
EXHIBITS - Work Order No. 03027350 Between Cingular Wireless and SBC
           Services, Inc.

                                                                   EXHIBIT 10.63

                                                       Agreement Number 03027350

<TABLE>
<S>                  <C>                              <C>         <C>       <C>     <C>
Preferred Nation     25,000 minutes of use per        $10 per     $0.25     $0.69   $2,000 per
     Pooled          month. No long distance fees,     month                          month
</TABLE>

The following features will be provided at no additional cost:

-        Detailed billing

-        Caller ID (only available in digital market areas)

The following pricing is for Service associated with the logistics for storage,
shipping, provisioning, and receiving.

<TABLE>
<CAPTION>
 SERVICE                       DESCRIPTION                              PRICE
 -------                       -----------                              -----
<S>               <C>                                                 <C>
Logistics         Storage, shipping, provisioning, and                $60.00 per
                  receiving as detailed in Appendix A. The             shipment
                  price is based on Service being active
                  during the month whether for a partial
                  month or a full month. For example, if a
                  handset gets sent out twice in a on month
                  period, it will be subject to two (2)
                  $60.00 shipment fees.

Logistics         Storage, shipping, provisioning, and                $3.00 per
                  receiving as detailed in Appendix A. The            unit per
                  price is based on a minimum of 500                   month
                  handsets ("units") per month. If the
                  number of units is less than 500 units,
                  500 units will be charged. If there are
                  more than 500 units, each additional unit
                  will add $3.00 per month to the price per
                  month.
</TABLE>

                            PROPRIETARY INFORMATION

THE INFORMATION CONTAINED IN THIS AGREEMENT IS NOT FOR USE OR DISCLOSURE OUTSIDE
  SBC, CINGULAR, THEIR AFFILIATES AND THEIR THIRD PARTY REPRESENTATIVES, EXCEPT
               UNDER WRITTEN AGREEMENT BY THE CONTRACTING PARTIES.

                                        9<PAGE>
CINGULAR WIRELESS LLC
EXHIBITS - Investment Agreement, dated as of February 17, 2004, between
           BellSouth Corporation and SBC Communications Inc.
--------------------------------------------------------------------------------

                                                                   EXHIBIT 10.64

                              INVESTMENT AGREEMENT

         INVESTMENT AGREEMENT (this "Agreement"), dated as of February 17, 2004,
between BellSouth Corporation, a Georgia corporation ("BellSouth"), and SBC
Communications Inc., a Delaware corporation ("SBC").

                              W I T N E S S E T H:

         WHEREAS, BellSouth and SBC are the sole owners of Cingular Wireless
Corporation, a Delaware corporation ("Cingular"), and BellSouth or an Affiliate
of BellSouth, SBC or an Affiliate of SBC and Cingular are the sole owners of,
and Cingular is the sole manager of, Cingular Wireless LLC, a Delaware liability
limited company ("Cingular LLC");

         WHEREAS, simultaneously with the execution of this Agreement, Cingular,
Links I Corporation, a Delaware corporation and wholly-owned subsidiary of
Cingular ("Merger Sub"), Cingular LLC and AT&T Wireless, Inc., a Delaware
corporation ("AWE") (and solely with respect to specific provisions, SBC and
BellSouth) have entered into an Agreement and Plan of Merger, dated as of
February 17, 2004 (the "Merger Agreement"), pursuant to which Merger Sub will be
merged with and into AWE (the "Merger");

         WHEREAS, BellSouth and SBC have agreed that upon the Closing they will
make investments in Cingular sufficient for Cingular to pay the Merger
Consideration;

         WHEREAS, in addition to making investments in Cingular, each of
BellSouth and SBC wish to enter into certain transactions with Cingular LLC; and

         WHEREAS, following the Merger, BellSouth and SBC, desire to take
certain actions, and to cause Cingular and Cingular LLC to take certain actions,
in order to structure Cingular's ownership of AWE and its Subsidiaries and
BellSouth's and SBC's ownership in Cingular and Cingular LLC.

         NOW, THEREFORE, in consideration of the promises and representations
and warranties set forth herein, the parties hereto agree as follows:

         1.       BellSouth agrees that it will, or will cause one or more of
its wholly-owned Subsidiaries to, provide to Cingular, at or prior to the
Effective Time, 40% of the aggregate amount of the Merger Consideration and will
cause Cingular to use such amount toward payment of the Merger Consideration;
and SBC agrees that it will, or will cause one or more of its wholly-owned
Subsidiaries to, provide to Cingular, at or prior to the Effective Time, 60% of
the aggregate amount of the Merger Consideration and will cause Cingular to use
such amount toward payment of the Merger Consideration. Such cash amounts will
be provided to Cingular as loans to, and cash contributions in exchange for
non-voting equity securities of, Cingular, or a combination thereof;

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CINGULAR WIRELESS LLC
EXHIBITS - Investment Agreement, dated as of February 17, 2004, between
           BellSouth Corporation and SBC Communications Inc.
--------------------------------------------------------------------------------

                                                                   EXHIBIT 10.64

provided, however, that the principal amounts of such loans to Cingular shall be
Proportionate as between BellSouth and SBC (the term "Proportionate" means 40%
with respect to BellSouth and 60% with respect to SBC unless otherwise agreed or
as otherwise adjusted by future changes in their respective effective ownership
interests in Cingular and Cingular LLC) and the number of non-voting equity
securities of Cingular issued shall be Proportionate as between SBC and
BellSouth unless otherwise agreed, and provided further that the terms and
conditions of such loans and such securities shall be identical as between those
loans from and securities issued to BellSouth and comparable loans from and
securities issued to SBC. BellSouth and SBC agree to negotiate in good faith the
terms under which such cash amounts will be provided to Cingular (including the
allocation of such amounts between loans, cash equity contributions or an agreed
on combination thereof, and the terms of loans and the non-voting equity
securities), and to determine such terms no later than the Effective Time.

         2.       Each of BellSouth and SBC hereby represent and warrant to the
other as follows:

         (a)      It is a corporation duly organized, validly existing and in
good standing under the laws of its respective jurisdiction of organization and
has all requisite corporate power and authority to own and operate its
properties and assets and to carry on its business in all material respects as
it is currently conducted.

         (b)      Other than the filings and/or notices required to effect the
Merger, no notices, reports or other filings are required to be made by it or
its Subsidiaries with, nor are any consents, registrations, approvals, permits
or authorizations required to be obtained by it or its Subsidiaries from, any
Governmental Entity, in connection with the execution and delivery of this
Agreement by it and the consummation by it of the transactions contemplated
hereby, except those that the failure to make or obtain would not, individually
or in the aggregate, be reasonably likely to prevent, materially delay or
materially impair its ability to consummate the transactions contemplated by
this Agreement.

         (c)      The execution, delivery and performance of this Agreement by
it do not, and the consummation by it of the transactions contemplated hereby
will not, constitute or result in (A) a breach or violation of, or a default
under, its certificate of incorporation or by-laws, (B) a breach or violation
of, or a default under, the acceleration of any obligations or the creation of a
lien, pledge, security interest or other Encumbrance on its assets or the assets
of any of its Subsidiaries (with or without notice, lapse of time or both)
pursuant to any Contract binding upon it or any of its Subsidiaries or any Law
or governmental or non-governmental permit or license to which it or any of its
Subsidiaries is subject or (C) any change in the rights or obligations of any
party under any of its or its Subsidiaries' Contracts, except, in the case of
clause (B) or (C) above, for any breach, violation, default, acceleration,
creation or change that, individually or in the aggregate, would not be
reasonably likely to prevent, materially delay or materially impair its ability
to consummate the transactions contemplated by this Agreement.

                                       2
<PAGE>
CINGULAR WIRELESS LLC
EXHIBITS - Investment Agreement, dated as of February 17, 2004, between
           BellSouth Corporation and SBC Communications Inc.
--------------------------------------------------------------------------------

                                                                   EXHIBIT 10.64

         (d)      It has all requisite corporate power and authority and has
taken all corporate action necessary in order to execute, deliver and perform
its obligations under this Agreement. This Agreement is a legal, valid and
binding agreement of it enforceable against it in accordance with its terms,
subject to bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium and similar laws of general applicability relating to or affecting
creditors' rights and to general equity principles.

         3.       Any provision of this Agreement may be amended or waived if,
and only if, such amendment or waiver is in writing and signed, in the case of
an amendment, by the parties hereto, or in the case of a waiver, by the party
against whom the waiver is to be effective. No failure or delay by any party in
exercising any right, power or privilege hereunder shall operate as a waiver
thereof nor shall any single or partial exercise thereof preclude any other or
further exercise thereof or the exercise of any other right, power or privilege.

         4.       Neither party hereto may assign any of its rights or
obligations under this Agreement without the prior written consent of the other
party hereto and any such purported assignment shall be null and void.

         5.       This Agreement and any amendments hereto may be executed in
one or more counterparts, each of which shall be deemed to be an original by the
parties executing such counterpart, but all of which shall be considered one and
the same instrument.

         6.       THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF DELAWARE WITHOUT REFERENCE TO THE
CHOICE OF LAW PRINCIPLES THEREOF. EACH PARTY HERETO AGREES THAT IT SHALL BRING
ANY ACTION OR PROCEEDING IN RESPECT OF ANY CLAIM ARISING OUT OF OR RELATED TO
THIS AGREEMENT OR THE TRANSACTIONS CONTAINED IN OR CONTEMPLATED BY THIS
AGREEMENT, WHETHER IN TORT OR CONTRACT OR AT LAW OR IN EQUITY, EXCLUSIVELY IN
THE COURTS OF THE STATE OF DELAWARE AND THE FEDERAL COURTS OF THE UNITED STATES
OF AMERICA LOCATED IN THE STATE OF DELAWARE.

         7.       Capitalized terms used, but not defined herein shall have the
meanings ascribed to such terms in the Merger Agreement.

         8.       This Agreement will terminate and be of no further force and
effect upon a termination of the Merger Agreement prior to the Effective Time,
but no such termination shall relieve any party hereto for liability for any
breach of this Agreement prior to the time of termination.

                                       3
<PAGE>
CINGULAR WIRELESS LLC
EXHIBITS - Investment Agreement, dated as of February 17, 2004, between
           BellSouth Corporation and SBC Communications Inc.
--------------------------------------------------------------------------------

                                                                   EXHIBIT 10.64

                  IN WITNESS WHEREOF, this Agreement has been duly executed and
delivered by the duly authorized officers of the parties hereto as of the date
first written above.

                                        SBC COMMUNICATIONS INC.

                                        By:      /s/ Rick Moore
                                           ----------------------------------
                                           Name:    Rick Moore
                                           Title:

                                        BELLSOUTH CORPORATION

                                        By:      /s/ Barry L. Boniface
                                           ----------------------------------
                                           Name:    Barry L. Boniface
                                           Title:   Vice President-Planning and
                                                    Development

                                       4

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