<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-12-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001822250</issuerCik>
        <issuerName>ContextLogic Inc.</issuerName>
        <issuerTradingSymbol>WISH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001833840</rptOwnerCik>
            <rptOwnerName>Just Brett</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE SANSOME STREET, 33RD FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94104</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Accounting Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-12-15</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3514</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>68983</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
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            <securityTitle>
                <value>Restricted Stock Unit</value>
            </securityTitle>
            <conversionOrExercisePrice>
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            </conversionOrExercisePrice>
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            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
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                <transactionCode>M</transactionCode>
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            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
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                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
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                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2024-10-23</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class B Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
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                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
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                </directOrIndirectOwnership>
            </ownershipNature>
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            <securityTitle>
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            </securityTitle>
            <conversionOrExercisePrice>
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                <footnoteId id="F5"/>
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            <deemedExecutionDate></deemedExecutionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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                </transactionShares>
                <transactionPricePerShare>
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                </underlyingSecurityTitle>
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            </underlyingSecurity>
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            </transactionCoding>
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                </transactionShares>
                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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                <footnoteId id="F6"/>
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            <expirationDate>
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            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
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                </underlyingSecurityShares>
            </underlyingSecurity>
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                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
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                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
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            </securityTitle>
            <conversionOrExercisePrice>
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                <footnoteId id="F5"/>
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            <transactionDate>
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            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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                <transactionFormType>4</transactionFormType>
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            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
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                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
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                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
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                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
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                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
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            </securityTitle>
            <conversionOrExercisePrice>
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            <transactionDate>
                <value>2021-12-15</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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                <transactionFormType>4</transactionFormType>
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            <transactionTimeliness>
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            <transactionAmounts>
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                </transactionShares>
                <transactionPricePerShare>
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            </underlyingSecurity>
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                <footnoteId id="F5"/>
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            <transactionTimeliness>
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                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents the conversion of Class B Common Stock, issued upon settlement of vested Restricted Stock Units (&quot;RSUs&quot;), into Class A common Stock held of record by the Reporting Person.</footnote>
        <footnote id="F2">Each RSU represents a contingent right to receive one share of Issuer's Class B Common Stock. Subject to the reporting person's continued service, 20% of the RSUs vested on September 5, 2018, and an additional 1/60th of the remaining RSUs vest monthly thereafter for a period of 5 years.</footnote>
        <footnote id="F3">This reported transaction represents the settlement of RSUs vested as of December 15, 2021.</footnote>
        <footnote id="F4">All shares of Class B Common Stock will automatically convert, on a one-for-one basis, into shares of Class A Common Stock on the earliest of (i) any transfer of the Class B Common Stock by the holder, whether or not for value, subject to certain exceptions, (ii) the 7-year anniversary of the closing date of the issuer's initial public offering, (iii) the date on which the number of outstanding shares of Class B Common Stock represents less than 5% of the aggregate combined number of outstanding shares of Class A Common Stock and Class B Common Stock, (iv) the date specified by a vote of the holders of a majority of the then outstanding shares of Class B common stock, or (v) a date that is between 90 and 270 days, as determined by the board of directors, after the death or permanent incapacity of the issuer's founder, CEO, and Chairperson.</footnote>
        <footnote id="F5">Each share of Class B Common Stock is convertible at any time at the option of the holder into one share of Class A Common Stock. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon any transfer, whether or not for value, except certain permitted transfers.</footnote>
        <footnote id="F6">Each RSU represents a contingent right to receive one share of Issuer's Class B Common Stock.  Subject to the reporting person's continued service, 20% of the RSUs vested on May 1, 2019, and an additional 1/60th of the remaining RSUs vest monthly thereafter for a period of 5 years.</footnote>
        <footnote id="F7">Each RSU represents a contingent right to receive one share of Issuer's Class B Common Stock. Subject to the reporting person's continued service, 25% of the RSUs vested on January 1, 2020, and 1/36th of the RSUs vest monthly thereafter for a period of 3 years.</footnote>
        <footnote id="F8">Each RSU represents a contingent right to receive one share of Issuer's Class B Common Stock. Subject to the reporting person's continued service, 1/48th of the RSUs vest monthly for a period of 4 years beginning on May 1, 2019.</footnote>
        <footnote id="F9">Each RSU represents a contingent right to receive one share of Issuer's Class B Common Stock. Subject to the reporting person's continued service, 1/48th of the RSUs vest monthly for a period of 4 years beginning on September 1, 2019.</footnote>
        <footnote id="F10">Each RSU represents a contingent right to receive one share of Issuer's Class B Common Stock. Subject to the reporting person's continued service, 1/48th of the RSUs vest monthly for a period of 4 years beginning on October 1, 2020.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Renee Jackson, Attorney-in-Fact</signatureName>
        <signatureDate>2021-12-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
