Document:

<PAGE>

                                                                  EXHIBIT 10.1.1

CONFIDENTIAL TREATMENT HAS BEEN REQUESTED FOR CERTAIN REDACTED PROVISIONS OF
THIS AGREEMENT. THE REDACTED PROVISIONS ARE IDENTIFIED BY AN ASTERISK AND
ENCLOSED BY BRACKETS. THE CONFIDENTIAL PORTIONS HAVE BEEN FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION.

________________________________________________________________________________

         Amendment of Master Software License and Distribution Agreement
                           (Contract No. 220-00-0134)

               between Cellco Partnership (d/b/a Verizon Wireless)

                                       and
                           Smith Micro Software, Inc.

________________________________________________________________________________

<PAGE>

                                                     CONTRACT NO. 750-33576-2001

                                  AMENDMENT OF
               MASTER SOFTWARE LICENSE AND DISTRIBUTION AGREEMENT
                    APPENDIX A TO AGREEMENT DATED 12-01-2000
                           (CONTRACT NO. 220-00-0134)

THIS AMENDMENT of the Master Software License and Distribution Agreement
("Agreement") is made between the Cellco Partnership, a Delaware general
partnership d/b/a Verizon Wireless and Smith Micro Software, Inc. ("Smith
Micro"), for purposes of amending the Agreement.

WHEREAS, Verizon Wireless and Smith Micro entered into a Master Software License
and Distribution Agreement dated December 1, 2000; and

WHEREAS, Verizon Wireless and Smith Micro now desire to amend the Agreement to
include additional project(s) as set forth herein.

NOW, THEREFORE, in consideration of the foregoing promises, and for other good
and valuable consideration the receipt and sufficiency of which is hereby
acknowledged, Smith Micro agrees [*] to add support and functionality for 1xRTT
hardware and 1xRTT networks in accordance with the specifications as proposed by
Smith Micro in the Proposal Dated September 10, 2001 a copy of which is attached
hereto and incorporated herein as Exhibit "A"

                                       [*]

3.       Except as specifically provided hereunder, the terms and conditions
         of the Agreement shall remain in full force and effect as set forth
         therein.

         IN WITNESS WHEREOF, the Parties hereto have caused this Agreement to be
executed by their duly authorized officers or representatives.

CELLCO PARTNERSHIP                                   Smith Micro Software, Inc.
d/b/a Verizon Wireless

By:  /s/ James Straight                              By: /s/ R. W. Scheussler

Name:  James Straight                                Name: R. W. Scheussler

Title:  VP Data & Internet Services                  Title: Sr. VP & COO
Date:  11/15/01                                      Date:  11/13/01

--------------
* Confidential Treatment has been requested for certain redacted provisions of
this agreement. The redacted provisions are identified by an asterisk and
enclosed by brackets. The confidential portions have been filed separately with
the Securities and Exchange Commission.

<PAGE>

                           [SMITHMICRO SOFTWARE LOGO]

                                    Exhibit A

                            [QUICKLINK MOBILE LOGO]

                                      1xRTT

                           Smith Micro Software, Inc.
                                    9-10-2001

[*]

--------------
* Confidential Treatment has been requested for certain redacted provisions of
this agreement. The redacted provisions are identified by an asterisk and
enclosed by brackets. The confidential portions have been filed separately with
the Securities and Exchange Commission.<PAGE>

                                                                  EXHIBIT 10.1.2

CONFIDENTIAL TREATMENT HAS BEEN REQUESTED FOR CERTAIN REDACTED PROVISIONS OF
THIS AGREEMENT. THE REDACTED PROVISIONS ARE IDENTIFIED BY AN ASTERISK AND
ENCLOSED BY BRACKETS. THE CONFIDENTIAL PORTIONS HAVE BEEN FILED SEPARATELY WITH
THE SECURITIES AND EXCHANGE COMMISSION.

________________________________________________________________________________

    Amendment No. 2 to the Master Software License and Distribution Agreement
                           (Contract No. 220-00-0134)

               between Cellco Partnership (d/b/a Verizon Wireless)

                                       and

                           Smith Micro Software, Inc.

________________________________________________________________________________

<PAGE>

                                                     CONTRACT NO. 750-33576-2001

                             AMENDMENT NO. 2 TO THE
               MASTER SOFTWARE LICENSE AND DISTRIBUTION AGREEMENT
                       (CONTRACT NO. 220-00-0134) BETWEEN
    CELLCO PARTNERSHIP, A DELAWARE GENERAL PARTNERSHIP D/B/A VERIZON WIRELESS
                                       AND
                           SMITH MICRO SOFTWARE, INC.

THIS AMENDMENT NO. 2 ("AMENDMENT") amends the Master Software License and
Distribution Agreement ("Agreement") between Cellco Partnership, a Delaware
general partnership d/b/a Verizon Wireless ("Verizon Wireless") on behalf of
itself and for the benefit of its Affiliates and Smith Micro Software, Inc.
("SMSI"). This Amendment shall be effective on March 31, 2003 (the "Effective
Date"), unless terminated in accordance with the Agreement (Termination).

WHEREAS, Verizon Wireless and SMSI entered into a Master Software License and
Distribution Agreement dated December 1,2000; and

WHEREAS, Verizon Wireless and SMSI now desire to amend the Agreement to include
additional project(s) as set forth herein.

NOW, THEREFORE, in consideration of the foregoing promises, and for other good
and valuable consideration the receipt and sufficiency of which is hereby
acknowledged, SMSI agrees [*] to add 1xRTT/802.11(WiFi) combination
functionality in accordance with the provisions set forth herein and on Schedule
A1, attached hereto and incorporated herein. The work to be performed hereunder
is within SMSI's planned development of the Software under Section 2.2 of the
Agreement. In addition, SMSI shall license to Verizon Wireless, QuickLink(R)
Mobile Phonebook software in accordance with the provisions set forth on
Schedule A-2, attached hereto and incorporated herein.

     1.       This Amendment is an integral part of the Agreement. The terms
              used herein which are defined or specified in the Agreement shall
              have the meanings set forth in the Agreement. If there are any
              inconsistencies between the provisions of this Amendment and the
              provisions of the Agreement, the provisions of this Amendment
              shall control.

     2.       Section 1.1, Definitions, shall be deleted in its entirety and
              replaced with the following:

             "1.1          Definitions

                           a.     "Affiliate" means any entity that controls, is
                           controlled by, or is under common control with
                           Verizon Wireless.

-----------
* Confidential Treatment has been requested for certain redacted provisions of
this agreement. The redacted provisions are identified by an asterisk and
enclosed by brackets. The confidential portions have been filed separately with
the Securities and Exchange Commission.

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                           b.     "Agreement" refers to this Master Software
                           License and Maintenance Agreement.

                           c.     "Combination Client" means the software
                           product which shall enable Verizon Wireless end-users
                           to access both the Verizon Wireless 1xRTT and Verizon
                           Wireless WiFi networks. Such Combination Client shall
                           also contain the Hot Spot Directory and shall support
                           any 1xRTT or 802.11 capable hardware device supported
                           by Verizon Wireless.

                           d.     "Distributed" shall mean copies of the
                           software shipped or downloaded.

                           e.     "Final Software" shall mean, for purposes of
                           sections 3.3 and 3.4 of the Agreement, the software
                           product which exists at the moment or time of
                           expiration or termination of this Agreement.

                           f.     "Hot Spot Directory" means the listing of all
                           WiFi access points available for access by all
                           Verizon Wireless subscribers.

                           g.     "Order" refers to a written order from Verizon
                           Wireless for the license from SMSI of the Single
                           Client or the Combination Client and/or purchase of
                           Related Services.

                           h.     "Outstanding Order" refers to an Order for
                           which license to the Single Client or the Combination
                           Client described therein or for which any Related
                           Service described therein has not been accepted.

                           i.     "Party" refers to either Verizon Wireless or
                           SMSI, as the context requires; both Verizon Wireless
                           and SMSI may be collectively referred to as the
                           "Parties."

                           j.     "QuickLink Phone Book refers to SMSI's
                           QuickLink Phone Book software program.

                           k.     "Related Services" means those services such
                           as technical support, training, and [*] which SMSI
                           will provide to Verizon Wireless hereunder. Those
                           Related Services which will be provided by SMSI and
                           the charges therefore, if any, are set forth on
                           Schedules A, A-1, A-2 and B, attached hereto and
                           incorporated herein by reference.

                           l.     "Single Client" refers to the previously
                           developed software product which enables Verizon
                           Wireless subscribers to access the Verizon Wireless
                           1xRTT

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* Confidential Treatment has been requested for certain redacted provisions of
this agreement. The redacted provisions are identified by an asterisk and
enclosed by brackets. The confidential portions have been filed separately with
the Securities and Exchange Commission.

                                       2
<PAGE>

                           network.

                           m.     "Software" refers to the computer program and
                           applications, available hereunder as described in
                           Schedules A, A-1 and A-2, and includes all related
                           documentation and manuals.

                           n.     "1xRTT" means Single Carrier (lx) Radio
                           Transmission Technology. It is a Third Generation
                           (3G) wireless technology for the CDMA platform that
                           has the capability of speeds up to one hundred
                           forty-four (144) kbps. For terms of this Agreement,
                           1xRTT may also be referred to as "Wireless Wide Area
                           Network (WWAN)" or "Express Network."

                           o.     "802.1l/WiFi" means Wireless Fidelity and
                           generically applies to all 802.11 networks, 802.11
                           networks provide high speed access to subscribers in
                           specific HotSpot locations (Access Points). The terms
                           802.11 and WiFi are synonymous.

         [*]

         4.   The following shall be added as Section 3.3 of the Agreement:

              3.3  In the event the Agreement is terminated as a result of:
                   (1) a material default of SMSI which has not been cured: or;
                   (2) because SMSJ unilaterally chooses not to renew this
                   Agreement:

                   3.3.1   SMSI shall grant to Verizon Wireless, subject to the
                           terms and conditions of this Agreement, for the
                           balance of the then current term and, at Verizon
                           Wireless' option, for one (1) additional one (1) year
                           term beyond termination or expiration of the
                           Agreement, an irrevocable, non-exclusive,
                           non-transferable (except to a parent or Affiliate of
                           Verizon Wireless), limited license to use all
                           previously licensed copies of the Final Software
                           acquired under this Agreement.

                   3.3.2   Provided Verizon Wireless continues to pay the
                           license fees to acquire new licenses to use the
                           Combination Client and the QuickLink(R) Mobile
                           Phonebook software, SMSI shall grant to Verizon
                           Wireless, subject to the terms and conditions of this
                           Agreement, at Verizon Wireless' option, for five (5)
                           years, the irrevocable, non-exclusive,
                           non-transferable (except to a parent or Affiliate of
                           Verizon Wireless), limited right to manufacture or
                           have manufactured, enhance or have enhanced, market
                           and distribute the Final Software, and the
                           QuickLink(R) Mobile Phonebook software to
                           distributors, re-sellers, OEM customers of Verizon
                           Wireless, subscribers of Verizon Wireless and
                           end-users.

-----------
* Confidential Treatment has been requested for certain redacted provisions of
this agreement. The redacted provisions are identified by an asterisk and
enclosed by brackets. The confidential portions have been filed separately with
the Securities and Exchange Commission.

                                       3
<PAGE>

                           [*]

         5.   The following shall be added as Section 3.4 of the Agreement:

              3.4  In the event Verizon Wireless chooses not to renew the
                   Agreement and therefore causes the Agreement to terminate:

                   3.4.1   SMSI shall grant to Verizon Wireless, subject to the
                           terms and conditions of this Agreement, for one (1)
                           additional one (1) year term, an irrevocable,
                           non-exclusive, non-transferable (except to a parent
                           or Affiliate of Verizon Wireless), limited license to
                           use all previously licensed copies of the Final
                           Software acquired under this Agreement.

                   3.4.2   Provided Verizon Wireless continues to pay the
                           license fees to acquire new licenses to use the Final
                           Software and the QuickLink(R) Mobile Phonebook
                           software, SMSI shall grant to Verizon Wireless,
                           subject to the terms and conditions of this
                           Agreement, for one (1) additional one (1) year term,
                           the irrevocable, non-exclusive, non-transferable
                           (except to a parent or Affiliate of Verizon
                           Wireless), limited right to manufacture or have
                           manufactured, market and distribute the Final
                           Software, and the QuickLink(R) Mobile Phonebook
                           software to distributors, re-sellers, OEM customers
                           of Verizon Wireless, subscribers of Verizon Wireless
                           and end-users.

         6.   Section 5.1 License Fees, shall be deleted in its entirety and
         replaced with the following:

              "5.1 License Fees.

              [*]

              c.  SMSI may suspend its performance under this Agreement if any
                  payment by Verizon Wireless [*] is past due, sixty (60) days
                  from receipt of written notice to Verizon Wireless that such
                  payment is past due.

         7.   Survival. Obligations and rights in connection with this Agreement
         which by their nature would continue beyond the Termination or
         expiration of this Agreement, including, without limitation, those in
         Sections II, 3.2, 3.3, 3.4, 5.1, VIII, IX, X and XIII will survive the
         Termination or expiration of this Agreement.

     8.  Schedule A, Software and Related Services - Description and Price List
         shall be renamed to

-----------
* Confidential Treatment has been requested for certain redacted provisions of
this agreement. The redacted provisions are identified by an asterisk and
enclosed by brackets. The confidential portions have been filed separately with
the Securities and Exchange Commission.

                                       4
<PAGE>

         "Schedule A, Single Client and Related Services -- Description and
         Pricing."

     9.  Schedule A-1, Combination Client and Related Services - Description
         and Pricing, shall be added to the Agreement in the form attached
         hereto.

     10. Schedule A-2, QuickLink(R) Mobile Phonebook software and Related
         Services --Description and Pricing, shall be added to the Agreement in
         the form attached hereto.

     11. Except as specifically provided hereunder, the terms and conditions of
         the Agreement shall remain in full force and effect as set forth
         therein.

         IN WITNESS WHEREOF, the Parties hereto have caused this Amendment to
         be executed by their duly authorized officers or representatives.

CELLCO PARTNERSHIP                                 Smith Micro Software, Inc
d/b/a Verizon Wireless

By:  /s/ Ted L. Hoffman                            By:  /s/ William W. Smith Jr.

Name: Ted L. Hoffman                               Name:  William W. Smith Jr.

Title:  Staff VP - Technical Development           Title: CEO/President

Date: 6/24/03                                      Date: June 19, 2003

                                       5
<PAGE>

                                  SCHEDULE A-1

         COMBINATION CLIENT AND RELATED SERVICES - DESCRIPTION AND PRICING

1.       SOFTWARE DESCRIPTION

2.       SOFTWARE DESCRIPTION: Verizon Wireless currently offers 1xRTT
         (Express Network) service access through the Single Client which is
         available on a CD and included in the QuickLink Mobile Office data kit.
         The Combination Client being developed under this Amendment will
         enhance the Single Client to provide access to the 802.11 (WiFi)
         network. WiFi is synonymous with 802.11.

         The Combination Client will search for and display available 1xRTT
         (Express Network) or 802.11 (WiFi) networks and provide a "user
         friendly" method to access those networks. The Combination Client can
         be enabled with access to both the 1xRTT and 802.11 (WiFi) networks or
         enabled for access to "1xRTT only" or "WiFi only". Both 1xRTT and
         802.11 (WiFi) are industry standard high speed networks.

         This enhancement will provide the end user easy access to the 802.11
         (WiFi) network through a client.

 [*]

-----------
* Confidential Treatment has been requested for certain redacted provisions of
this agreement. The redacted provisions are identified by an asterisk and
enclosed by brackets. The confidential portions have been filed separately with
the Securities and Exchange Commission.

                                       6
<PAGE>

                                  SCHEDULE A-2

QUICKLINK(R) MOBILE PHONEBOOK SOFTWARE AND RELATED SERVICES - DESCRIPTION AND
PRICING

1.       SOFTWARE NAME: QuickLink(R) Mobile Phonebook

2.       SOFTWARE DESCRIPTION: This software will provide advanced phone book
         capabilities to Verizon Wireless end-users. QuickLink(R) Mobile
         Phonebook is an easy to use application that lets the user manage their
         wireless handset's phone book on their computer. Users can edit, delete
         and add new entries using a PC keyboard. When the user is done they can
         update their cell phone with the new information. It also allows
         importing of entries from Outlook, Outlook Express, ACT, Goldmine and
         any other csv format text file. Users can also export their phonebook
         directly to Outlook or to a csv format text file. The phonebook can
         also be saved as a file on the PC for backup or distribution purposes.
         In order to ease the management and organization of entries in the cell
         phone, the application also provides features like sorting and moving
         of entries from one location to another through simple drag and drop
         techniques.

[*]

-----------
* Confidential Treatment has been requested for certain redacted provisions of
this agreement. The redacted provisions are identified by an asterisk and
enclosed by brackets. The confidential portions have been filed separately with
the Securities and Exchange Commission.

                                       7
]

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