Find "Device Password"
Slide your finger downwards starting from the top edge of the display.
Press Settings.
Press Settings.
Press Security and Privacy.
Press Device Password.
Select option
Select one of the following options:
Turn on use of phone lock code, go to 2a.
Turn off use of phone lock code, go to 2b.
Turn on use of phone lock code, go to 2a.
Turn off use of phone lock code, go to 2b.
2a - Turn on use of phone lock code
Press the indicator next to "Device Password" until the function is turned on.
Key in the required phone lock code.
Key in the required phone lock code.
Press Confirm password and key in the phone lock code again.
Press OK to confirm.
2b - Turn off use of phone lock code
Press the indicator next to "Device Password" until the function is turned off.
Key in the phone lock code and press OK.
Return to the home screen
Slide your finger upwards starting from the bottom edge of the display to return to the home screen.