Samsung Galaxy S II

Find "Set up screen lock"

Press Applications.

Find "Set up screen lock"

Press Settings.

Find "Set up screen lock"

Press Location and security.

Find "Set up screen lock"

Press Set up screen lock.

Choose option

Choose one of the following options:
Create phone lock code using a pattern, go to 2a.
Create phone lock code using a PIN, go to 2b.
Create phone lock code using a password, go to 2c.
Turn off use of phone lock code, go to 2d.

2a - Create phone lock code using a pattern

Press Pattern.

2a - Create phone lock code using a pattern

Press Next twice.

2a - Create phone lock code using a pattern

Press and drag a point to connect at least four points.

2a - Create phone lock code using a pattern

Press Continue.
Repeat the selected phone lock code to confirm.

2a - Create phone lock code using a pattern

Press Confirm.

2b - Create phone lock code using a PIN

Press PIN.

2b - Create phone lock code using a PIN

Key in the required phone lock code and press Continue.

2b - Create phone lock code using a PIN

Key in the phone lock code again and press OK.

2c - Create phone lock code using a password

Press Password.

2c - Create phone lock code using a password

Key in the required phone lock code and press Continue.

2c - Create phone lock code using a password

Key in the phone lock code again and press OK.

2d - Turn off phone lock code

Press None.

Exit

Press the Home key to return to standby mode.