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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.
1. Find "Security"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
2. Create phone lock code using a fingerprint
Press Fingerprint sensor.
Press Manage fingerprints.
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 GOT IT.
Follow the instructions on the screen to create the phone lock code using your fingerprint.
Press the Return key twice.
3. Turn off use of phone lock code
Press Screen lock and key in the additional phone lock code you created earlier.
Press YES, REMOVE.
4. Return to the home screen
Press the Home key to return to the home screen.