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<task xml:lang="en" id="GUID-F85B6D62-AD3B-5D18-990C-0884BF834EA1"><title>Phone Power Status Tutorial</title><shortdesc>This section describes how to retrieve the power status using multimode phone sub-sessions. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody> <steps-unordered> <step id="GUID-7E06F97A-E255-5F62-9A96-B024F0E11D5F"><cmd>Test if the power information can be obtained using <xref href="GUID-AA81AFA4-6FAC-3B0D-A082-BE0AEC58CCA8.dita"><apiname>RMobilePhone::GetBatteryCaps()</apiname></xref>. </cmd> <info>Power information capabilities are described in an <xref href="GUID-AA81AFA4-6FAC-3B0D-A082-BE0AEC58CCA8.dita"><apiname>RMobilePhone::TMobilePhoneBatteryCaps</apiname></xref>. </info> </step> <step id="GUID-CED8552A-A83D-5428-BFAE-970FC87E7AFD"><cmd>Get the power information using <xref href="GUID-AA81AFA4-6FAC-3B0D-A082-BE0AEC58CCA8.dita"><apiname>RMobilePhone::GetBatteryInfo()</apiname></xref>. </cmd> <info>Power status and charge level is returned in an <xref href="GUID-AA81AFA4-6FAC-3B0D-A082-BE0AEC58CCA8.dita"><apiname>RMobilePhone::TMobilePhoneBatteryInfoV1</apiname></xref> object. </info> </step> <step id="GUID-FB157958-4AA5-5910-ABBD-65B6895F75E9"><cmd>Use <xref href="GUID-AA81AFA4-6FAC-3B0D-A082-BE0AEC58CCA8.dita"><apiname>RMobilePhone::NotifyBatteryInfoChange()</apiname></xref> to get the notification of any changes to the power information. </cmd> </step> </steps-unordered> <result><p>The function should return the battery power level status. </p> </result> <example><title>Power status example</title> <p>The following code checks if the power information can be obtained, and if so, gets the charge level in a percentage value of the battery, if the phone is currently being powered by batteries. </p> <p>The code assumes <codeph>iMobilePhone</codeph> is an <xref href="GUID-AA81AFA4-6FAC-3B0D-A082-BE0AEC58CCA8.dita"><apiname>RMobilePhone</apiname></xref> object. </p> <codeblock id="GUID-6F62BDEB-25AC-5CF8-8222-A3618A6E681C" xml:space="preserve">TUint32 batteryCaps;

User::LeaveIfError(iMobilePhone.GetBatteryCaps(batteryCaps));

TInt charge = -1;

if (batteryCaps & RMobilePhone::KCapsGetBatteryInfo)

    {

    RMobilePhone::TMobilePhoneBatteryInfoV1 mobilePhoneBatteryInfo;

    TRequestStatus status;

    iMobilePhone.GetBatteryInfo(status, mobilePhoneBatteryInfo);

    User::WaitForRequest(status);

    User::LeaveIfError(status.Int());

    if (mobilePhoneBatteryInfo.iStatus == RMobilePhone::EPoweredByBattery)

        charge = mobilePhoneBatteryInfo.iChargeLevel;

    }

</codeblock> </example> </taskbody></task>