Before you buy a new cell phone or new tablet, please try the following procedure to repair your device. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.!

    Sony Xperia P hard reset

    Xperia P reset via MENU

    Your device freezes or has fatal errors

    Press and hold  volume up key+ power button together until phone restart.

    If this does not solve the problem, perform a factory data reset. In Idle mode, open the application list and select Settings → Privacy → Factory data reset → Reset phone → Erase everything.

    Clear storage : Erase the credential contents from the device and reset the password

    Set an unlock pattern

    Once you set a screen lock, your device will require an unlock code each time you turn it on or unlock the touch screen

    Settings → Location and security → Set screen lock → Pattern

    If you forget your PIN or password, bring your • device to a Sony Service Centre to reset it.

    Set an unlock PIN code

    Settings → Location and security → Set screen lock → PIN

    Set an unlock password Sony Xperia P,

    Settings → Location and security → Set screen lock → Password.

    firmware update with PC companion software

    Download PC companion and install

    PC Companion software S firmware update

    Install PC companion on your PC computer. Follow instruction. For firmware update you need a micro USB cable. When the pc recognizing your XPERIA P it will install the necessary driver files.

    After your XPERIA P connected press Start / in Support Zone

    Xperia X10 firmware update

    You can also use Sony update service tool

    X1 update service tool

    PC Suite is out of date use PC companion software instead