1. To wake the device or put the screen to sleep, press the Power/Lock button.
   
2. Scroll to Personal, then select Security.
   
3. Select Screen lock.
   
4. Select the Desired screen lock type.
   Note: For this example, Pattern was selected.
   
5. Draw the Desired pattern, then select CONTINUE.
   
6. Redraw the Desired pattern, then select CONFIRM.
   
7. Review the Notifications prompt, select the Desired option, then select DONE.
   
8. To login using the security lock, press and hold the lock screen, then enter your Chosen screen lock pattern.
   
9. To change the security lock type, from the Security, select Screen lock.
   
10. Enter your Current screen lock.
    
11. Choose Desired screen lock and follow prompts to set up.
    
12. To change Screen lock timeout, from the Security screen, select Automatically lock then select the Desired screen lock timeout.
    
13. 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 att.com/deviceunlock.
    Note: 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.