Exhibit 99.8

NOTICE OF GUARANTEED DELIVERY

FOR

SUBSCRIPTION RIGHTS CERTIFICATES ISSUED

BY MOTRICITY, INC.

This form, or one substantially equivalent hereto, must be used to exercise subscription rights (the “Rights”) pursuant to the rights offering described in the Prospectus, dated                     , (the “Prospectus”) of Motricity, Inc., a Delaware corporation (“Motricity”), if a holder of Rights cannot deliver the certificate(s) evidencing the Rights (the “Subscription Rights Certificates(s)”) to the Subscription Agent listed below (the “Subscription Agent”) at or prior to 5:00 p.m., New York City time, on                     , 2012, unless such time is further extended by Motricity as described in the Prospectus (as it may be extended, the “Expiration Date”). Such form must be delivered by hand or sent by fax transmission, first class mail or overnight courier to the Subscription Agent, and must be received by the Subscription Agent on or prior to the Expiration Date.

Payment of the Subscription Price of $0.65 for each unit consisting of 0.02599 shares of Motricity’s 13% Redeemable Preferred Stock and 0.21987 warrants to purchase Motricity’s common stock subscribed for upon exercise of such Rights must be received by the Subscription Agent in the manner specified in the Prospectus at or prior to 5:00 p.m., New York City time, on the Expiration Date even if the Subscription Rights Certificate(s) evidencing such Rights is(are) being delivered pursuant to the Guaranteed Delivery Procedures thereof.

The Subscription Agent is: American Stock Transfer & Trust Company

Fax Transmission: 718-234-5001

Telephone number for Confirmation (Toll Free): 877-248-6417 or 718-921-8317

DELIVERY OR TRANSMISSION OF THIS INSTRUMENT OTHER THAN AS SET FORTH ABOVE DOES NOT CONSTITUTE A VALID DELIVERY.

For questions regarding the Rights Offering, assistance regarding the method of exercising subscription rights or for additional copies of relevant documents and instructions, please contact the Information Agent by mail or telephone:

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Ladies and Gentlemen:

The undersigned hereby represents that the undersigned is the holder of Subscription Rights Certificate(s) representing [•] Rights and that such Subscription Rights Certificate(s) cannot be delivered to the Subscription Agent at or before 5:00 p.m., New York City time, on the Expiration Date. Upon terms and subject to the conditions set forth in the Prospectus, receipt of which is hereby acknowledged, the undersigned hereby elects to exercise the Subscription Privilege to subscribe for shares of common stock with respect to the Rights represented by such Subscription Rights Certificates(s).

The undersigned understands that payment of the Subscription Price of $0.65 per unit consisting of 0.02599 shares of Motricity’s 13% Redeemable Preferred Stock and 0.21987 warrants to purchase Motricity’s common stock subscribed for must be received by the Subscription Agent at or before 5:00 p.m., New York City time, on the Expiration Date and represents that such payment, in the aggregate amount of $[•] either (check appropriate box):

Subscription Rights Certificates (No(s). (if available)                                                                                  

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GUARANTEE OF DELIVERY

(Not to Be Used For Subscription Rights Certificate Signature Guarantee)

The undersigned, a member firm of a registered national securities exchange or of the National Association of Securities dealers, Inc., or a commercial bank or trust company having an office or correspondent in the United States, or a bank, stockbroker, savings and loan association or credit union with membership in an approved signature guarantee medallion program, pursuant to Rule 17Ad-15 of the Securities Exchange Act of 1934, as amended, guarantees that the undersigned will deliver to the Subscription Agent the certificates representing the Rights being exercised hereby, with any required signature guarantee and any other required documents, all within three (3) business days after the Expiration Date.

The institution that completes this form must communicate the guarantee to the Subscription Agent and must deliver the Subscription Rights Certificate(s) to the Subscription Agent within the time period shown in the Prospectus, dated                             , of Motricity, Inc. Failure to do so could result in a financial loss to such institution.

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