1. To lock the screen, press the Power/Lock key.
   Note: For GoPhone Users: Your device will have a different home screen showing ‘To check your data balance, go to att.com/mygophone’
   
2. To unlock the screen, press the Power/Lock key.
   
3. Touch and hold the Lock icon.
   
4. To set a security PIN code, tap Settings.
   
5. Scroll to, then tap Lock Screen (PIN).
   
6. Tap the Lock Screen PIN required switch.
   
7. Enter the desired PIN.
   
8. Re-enter the PIN.
   
9. To unlock the device with a PIN, from the lock screen, enter the required PIN.