1. Find "Device unlock"
Slide two fingers downwards starting from the top of the screen.
Press Security and privacy.
2. Create phone lock code using a fingerprint
Press Face and Fingerprint Unlock.
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 Fingerprint Unlock.
Follow the instructions on the screen to create the phone lock code using your fingerprint.
3. Turn off use of phone lock code
Press Screen lock and key in the additional phone lock code you created earlier.
4. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.