Lock or unlock your display, set a screen security lock type (pin, password, or pattern), get your PUK code, or request your device be unlocked from the AT&T network.
INSTRUCTIONS & INFO
SET A SECURITY LOCK: Swipe down from the Notification bar, then select the Settings icon.
Select Screen lock.
Select the desired screen lock type. Note: If you choose Pattern lock, you will have to reset your device if and you forget your Pattern lock. See the Reset Device tutorial for alternate reset instructions.
To require a security pattern to start the device, select Require pattern to start device. Select No thanks to continue.
Enter the desired pattern, then select CONTINUE. Note: Enter the desired pattern again to confirm, then select CONFIRM.
Select the desired notification preferences, then select DONE.
CHANGE LOCK TYPE: From the Security screen, select Screen lock > desired screen lock type > follow the prompts to complete set up.
CHANGE LOCK SCREEN TIMEOUT: From the Security screen, select the Settings icon next to Screen lock.
Select Automatically lock, then select the desired option.