1 Find "Passcode Lock"
Press Settings.
Press General.
Press Passcode Lock.
2 Select option
Select one of the following options:
Turn on lock code, go to 2a.
Turn off lock code, go to 2b.
Turn on lock code, go to 2a.
Turn off lock code, go to 2b.
3 2a - Turn on lock code
Press Turn Passcode On.
Key in a lock code of your own choice.
Key in the same lock code again.
Key in a lock code of your own choice.
Key in the same lock code again.
Press Require Passcode.
Press Immediately or the required interval.
4 2b - Turn off lock code
Press Turn Passcode Off.
Key in the lock code.
Key in the lock code.
5 Exit
Press the Home key to return to standby mode.