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: For this demonstration, PIN was chosen. If you choose Pattern lock, you will have to reset your device if 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 PIN, then select CONTINUE. Note: Enter the desired PIN again to confirm, then select OK.
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.