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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 wDrQlS6M6xyyX/YfpppTng==

<SEC-DOCUMENT>0001209191-10-011623.txt : 20100223
<SEC-HEADER>0001209191-10-011623.hdr.sgml : 20100223
<ACCEPTANCE-DATETIME>20100223204212
ACCESSION NUMBER:		0001209191-10-011623
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100219
FILED AS OF DATE:		20100223
DATE AS OF CHANGE:		20100223

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Kahn Jonathan
		CENTRAL INDEX KEY:			0001336100

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26536
		FILM NUMBER:		10628074

	MAIL ADDRESS:	
		STREET 1:		51 COLUMBIA
		STREET 2:		SUITE 200
		CITY:			ALISO VIEJO
		STATE:			CA
		ZIP:			92656

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SMITH MICRO SOFTWARE INC
		CENTRAL INDEX KEY:			0000948708
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				330029027
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		51 COLUMBIA
		STREET 2:		STE 200
		CITY:			ALISO VIEJO
		STATE:			CA
		ZIP:			92656
		BUSINESS PHONE:		9493625800

	MAIL ADDRESS:	
		STREET 1:		51 COLUMBIA
		STREET 2:		STE 200
		CITY:			ALISO VIEJO
		STATE:			CA
		ZIP:			92656
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-02-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000948708</issuerCik>
        <issuerName>SMITH MICRO SOFTWARE INC</issuerName>
        <issuerTradingSymbol>SMSI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001336100</rptOwnerCik>
            <rptOwnerName>Kahn Jonathan</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>51 COLUMBIA</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>ALISO VIEJO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92656</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP - Productivity &amp; Graphics</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2010-02-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>50000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>195000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Restricted shares vest over 48 months. 50% are based on 2009 performance and vest evenly, monthly, over 48 months. 50% of shares are based on 2010 performance and vest over 48 months with the first vesting period beginning February 2011 with monthly vesting after February 2011.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Diane Gulling, Attorney in Fact for Jonathan Kahn</signatureName>
        <signatureDate>2010-02-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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