Lock or unlock your display, set a screen security lock type (pin, password, pattern or fingerprint), 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 Lock screen and Security, then select Screen lock type.
Select the desired screen lock type. Note: For this demonstration "Fingerprints" was selected. If you choose Pattern lock and do not set up a Fingerprint backup, you will have to reset your device if you forget your pattern. See the Reset Device tutorial for alternate reset instructions.
Select CONTINUE.
Select a Backup lock type, then follow the on-screen prompts to set up.
Place your finger on the Home button and then lift it off. Repeat the process until complete, moving the finger slightly each time.
Once you have finished registering your fingerprint, select the desired notification settings then select DONE.
ADD ADDITIONAL FINGERPRINTS: From Lock screen and security, select Fingerprints. Note: You will be prompted to enter your back up lock type.
Select Add fingerprint and follow the on-screen prompts.
REMOVE FINGERPRINTS: From the Fingerprints screen, select EDIT. Note: You will be prompted to select REMOVE again to confirm.
Select the desired fingerprint, then select REMOVE.
CHANGE LOCK SCREEN TIMEOUT: From the Lock screen and security screen, select Secure lock settings.
Select Secured lock time.
Select the desired option.
To learn more about requesting a device unlock for your AT&T mobile device so that it can operate on another compatible wireless network, visit www.att.com/deviceunlock.