Secure My Device
Which device do you want help with?

Secure My Device

Lock or unlock your display, set a screen security lock type, or get your PUK code.

  1. TURN ON SCREEN LOCK: From the home screen, press the OK button. Press the directional buttons to navigate to the Settings app, then press the OK button > navigate to Privacy & Security tab > navigate to and select Screen Lock > Screen Lock.
    device 5154/9007010_01.jpg
  2. Navigate to and select On. Press the dialpad buttons to create the desired four digit passcode, then repeat the input to confirm the passcode.
    device 5154/9007010_02.jpg
  3. LOCK YOUR DEVICE: Flip the screen closed.
    device 5154/9007010_03.jpg
  4. UNLOCK YOUR DEVICE: Flip open the screen, then enter the four digit passcode.
    device 5154/9007010_04.jpg
  5. CHANGE THE PASSCODE: From the Privacy & Security tab, navigate to and select Screen Lock > Change Passcode.
    device 5154/9007010_05.jpg
  6. Enter the old passcode.
    device 5154/9007010_06.jpg
  7. Enter the desired new passcode, then enter the desired new passcode again to confirm. Press the right option button to select Change.
    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 5154/9007010_07.jpg

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