1 Press "Screen lock & passwords"
Press Settings.
Press Screen lock & passwords.
2 Create phone lock code using a pattern
Press Password.
Press Pattern, slide your finger across the screen to connect at least four points and repeat the selected phone lock code.
3 Select PIN
Key in a four-digit PIN and press Confirm PIN.
Key in the PIN again and press Done.
4 Turn off use of phone lock code
Press Password.
Key in the current phone lock code and press None.
Press Remove.
5 Return to the home screen
Press the Home key to return to the home screen.