EXHIBIT 31.1

CERTIFICATION PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
(18 U.S.C. SECTION 1350)

I, William W. Smith, Jr., certify that:

1.	I have reviewed this annual report on Form 10-K /A of Smith Micro Software, Inc.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Date: April 29, 2009	/s/ William W. Smith, Jr.
	William W. Smith Jr.
	President and Chief Executive Officer (Principal Executive Officer)