Sony Xperia 10
Turning use of phone lock code on or off
The phone lock code prevents others from accessing the contents of your phone (such as pictures and messages). When the phone lock code is turned on, it needs to be used every time you turn on your phone and when it has been in sleep mode.
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Lock screen & security.
Press Fingerprint Manager.
Press NEXT.
Press the required phone lock code and follow the instructions on the screen to create an additional phone lock code.
Press the required setting.
Press DONE.
Follow the instructions on the screen to add your fingerprint.
Press DONE.
Press Screen lock and key in the current phone lock code.
Press None.
Press YES, REMOVE.
Press the Home key to return to the home screen.