Secure my device

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

  1. To lock the screen, press the Power/Lock key.
    device 3194/1660679.jpg
  2. To unlock, press the Power/Lock key.
    Note: To wake the screen using Knock On, tap the screen twice. To enable this feature in settings, go to Settings > General > Gestures > Knockon
    device 3194/1660680.jpg
  3. Touch and drag the screen in any direction.
    device 3194/1660681.jpg
  4. To enable and use Knock Code, swipe down from the Notifications bar.
    device 3194/1660682.jpg
  5. Tap the Settings icon.
    device 3194/1660683.jpg
  6. Under the Display tab, tap Lock screen.
    device 3194/1660684.jpg
  7. Tap Select screen lock.
    device 3194/1660685.jpg
  8. Tap Knock Code.
    device 3194/1660686.jpg
  9. Follow the on-screen instructions.
    device 3194/1660687.jpg
  10. Tap the code to unlock.
    Note: To learn more about requesting a device unlock for your AT&T mobile device, 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 3194/1660688.jpg

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