Secure My Device

Secure My Device

Lock the device screen, set and change security lock, and locate device.

  1. SET UP A SECURE SCREEN LOCK: Select the Settings icon from the home screen.
    Note: To wake the device or put the screen to sleep, press the Power/Lock button. You can also use KnockON. When the device is locked and sleeping, double-tap the center of the screen quickly to wake up the screen. To lock the screen, double-tap an empty area on the Home screen or the status bar in any screen (except on the camera viewfinder).
    device 5137/9007010_01.jpg
  2. Scroll to and select Lock screen then select Select screen lock.
    device 5137/9007010_02.jpg
  3. Select the desired screen lock type.
    Note: For this demonstration, Knock Code was selected.
    device 5137/9007010_03.jpg
  4. Enter your desired Knock code, then select Next.
    Note: Draw the pattern again to confirm.
    device 5137/9007010_04.jpg
  5. Select the desired Lock screen notification, then select OK.
    Note: To change lock screen notifications, swipe down from the top of the screen, then select Settings icon > Sound & notification > Lock screen.
    device 5137/9007010_05.jpg
  6. LOGIN USING SECURITY LOCK: Swipe in any direction across the lock screen then enter your knock code.
    device 5137/9007010_06.jpg
  7. To adjust the screen lock time, from the home screen, select the Settings icon > scroll to and select Lock screen Lock Timer > desired option.
    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 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 5137/9007010_07.jpg

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