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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 "Passwords & security"
Press Passwords & security.
2. Create phone lock code using a fingerprint
Press Fingerprint unlock.
Press the required phone lock code and follow the instructions on the screen to create an additional phone lock code.
Press Got it.
Follow the instructions on the screen to create the phone lock code using your fingerprint.
Press the indicators next to the required settings to turn them on or off.
Press the Return key.
3. Turn off use of phone lock code
Press Screen lock.
Key in the current phone lock code and press Turn off screen lock.
4. Return to the home screen
Press the Home key to return to the home screen.