1. SET OR CHANGE A SECURITY LOCK: Swipe down from the Notification bar, then select the Settings icon.
    device 5163/9007010_01.jpg
  2. Select Security.
    device 5163/9007010_02.jpg
  3. Select Screen lock, then select the desired screen lock type and follow the prompts to complete setup.
    device 5163/9007010_03.jpg
  4. CHANGE LOCK SCREEN TIMEOUT: From the Security screen, select the Settings icon.
    device 5163/9007010_04.jpg
  5. Select Automatically lock, then select the desired option.
    device 5163/9007010_05.jpg
  6. LOCK THE DEVICE: Press the Power/Lock button on the side of the device.
    Note: 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. If your device is locked and is requesting a "PUK" code, click here for instructions on how to obtain your PUK or PUK2 code to unlock your SIM card.
    device 5163/9007010_06.jpg