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    <periodOfReport>2018-08-20</periodOfReport>

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    <issuer>
        <issuerCik>0001312073</issuerCik>
        <issuerName>VERIFONE SYSTEMS, INC.</issuerName>
        <issuerTradingSymbol>PAY</issuerTradingSymbol>
    </issuer>

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            <rptOwnerCik>0001270939</rptOwnerCik>
            <rptOwnerName>AUSTIN KAREN A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O VERIFONE SYSTEMS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>88 WEST PLUMERIA DRIVE</rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
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    <footnotes>
        <footnote id="F1">At the effective time of the merger contemplated by the Agreement and Plan of Merger, dated as of April 9, 2018, by and among VeriFone Systems, Inc. (the &quot;Company&quot;), Vertex Holdco LLC, and Vertex Merger Sub LLC (the &quot;Effective Time&quot;), each issued and outstanding share of common stock of the Company (each, a &quot;Share&quot;) held by Ms. Austin was converted into the right to receive $23.04 in cash, without interest.</footnote>
        <footnote id="F2">Represents restricted stock units subject only to service-based vesting conditions (a &quot;Company RSU&quot;) under the Company's stock plans.</footnote>
        <footnote id="F3">At the Effective Time, each outstanding Company RSU under the Company's stock plans was converted into the right to receive an amount in cash (without interest) equal to the product obtained by multiplying (i) the total number of Shares subject to such Company RSU immediately prior to the Effective Time by (ii) $23.04, and otherwise remains subject to the same vesting schedule that applied immediately prior to the Effective Time.</footnote>
        <footnote id="F4">Represents deferred stock units of the Company (a &quot;Company DSU&quot;) under the Company's Director Deferred Compensation Plan.</footnote>
        <footnote id="F5">At the Effective Time, each outstanding Company DSU was converted into the right to receive (without interest), no later than three business days after the Effective Time, an amount in cash equal to the product obtained by multiplying (i) the total number of Shares subject to such Company DSU immediately prior to the Effective Time by (ii) $23.04.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Karen Austin, by Vik Varma, her Attorney-in-Fact</signatureName>
        <signatureDate>2018-08-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
