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    About this User guide

    This is the Xperia™ Z Ultra User guide for the Android™ 5.1 software version. If you're not sure which software version your device is running, you can check it via the Settings menu. For more information about software updates, see Updating your device .

    To check the current software version of your device

    1. From your Home screen, tap Icn sony home apptray normal.
    2. Find and tap Settings > About phone > Android™ version.
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    On your Xperia™ device, go to Settings > About phone/tablet > Model number
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    On your Xperia™ device, go to Settings > About phone/tablet > Model number