Find "Screen lock & passwords"

Press Screen lock & passwords.

Create phone lock code using a pattern

Press Password.

Create phone lock code using a pattern

Press Pattern and drag your finger across the screen to connect at least four points. Repeat the selected phone lock code.

Create phone lock code using a pattern

Press Done.

Turn off use of phone lock code

Press Password and key in the current phone lock code.

Turn off use of phone lock code

Press None.

Turn off use of phone lock code

Press REMOVE.

Return to the home screen

Press the Home key to return to the home screen.