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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-09-08</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001831819</rptOwnerCik>
            <rptOwnerName>Chuang Peiyen</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE SANSOME STREET, 40TH 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>Vice President of Operations</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <value>Class A Common Stock</value>
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            </transactionTimeliness>
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                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>163483</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
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                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
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    <derivativeTable>
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                </underlyingSecurityTitle>
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                </underlyingSecurityShares>
            </underlyingSecurity>
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                <value></value>
            </transactionTimeliness>
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                <transactionShares>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                <footnoteId id="F2"/>
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                <value>2024-08-11</value>
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                    <value>Class B Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>184000</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
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                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>5000</value>
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                <transactionPricePerShare>
                    <value>0.00</value>
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                    <value>A</value>
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            <expirationDate>
                <footnoteId id="F3"/>
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                <underlyingSecurityShares>
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                </underlyingSecurityShares>
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                <sharesOwnedFollowingTransaction>
                    <value>5000</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        <derivativeTransaction>
            <securityTitle>
                <value>Class B Common Stock</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
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                <footnoteId id="F1"/>
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                <value></value>
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                <transactionShares>
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                <transactionPricePerShare>
                    <value>0.00</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                <footnoteId id="F3"/>
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                <footnoteId id="F3"/>
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                    <value>0</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
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    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents the conversion of Class B Common Stock, issued upon exercise of options granted under the ContextLogic, Inc. 2010 Stock Plan, into Class A Common Stock held of record by the Reporting Person.</footnote>
        <footnote id="F2">Options granted under the ContextLogic, Inc. 2010 Stock Plan. The option shares vest and become exercisable with respect to 20% of the total shares on July 1, 2015, and with respect to 1/48th of the remaining shares each month thereafter.</footnote>
        <footnote id="F3">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="F4">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>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Renee Jackson, Attorney-in-Fact</signatureName>
        <signatureDate>2021-09-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
