POWER OF ATTORNEY

KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and appoints
Debra Koehler, Steven Yasbek, William W. Smith, Jr., and Allen Sussman and
certain other members or persons associated with Loeb & Loeb LLP, and each of
them with full authority to act without the others, as the undersigned's true
and lawful attorneys-in-fact to:

(1)	execute for and on behalf of the undersigned, in the undersigned's capacity
as a reporting person pursuant to Section 16 of the Securities Exchange Act of
1934, as amended (the "Exchange Act"), and the rules thereunder of Smith Micro
Corporation (the "Company"), Forms 3, 4 and 5 in accordance with Section 16(a)
of the Exchange Act;

(2)	do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form 3, 4 or 5
and timely file such form with the United States Securities and Exchange
Commission and stock exchange or similar authority; and

(3)	take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of any of such attorneys-in- fact, may be of
benefit to, in the best interest of, or legally required by, the undersigned, it
being understood that the documents executed by any of such attorneys-in-fact on
behalf of the undersigned pursuant to this Power of Attorney shall be in such
form and shall contain such terms and conditions as any of such
attorneys-in-fact may approve in the discretion of any of such
attorneys-in-fact.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that any of such attorneys-in-fact, or the
substitute or substitutes of any of such attorneys-in-fact, shall lawfully do or
cause to be done by virtue of this Power of Attorney and the rights and powers
herein granted. The undersigned acknowledges that the foregoing
attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Exchange Act.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys- in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 16th day of July, 2015.

Signature: /s/William W. Smith, Jr.
Name:  William W. Smith, Jr.