1. From the home screen, tap the Menu icon.
   Note: Learn about the importance of adding a password on your device to protect your privacy as well as how to report a lost or stolen phone: www.att.com/stolenphone.
   
2. Tap the Settings icon.
   
3. Tap Device.
   
4. Scroll down, then tap Security.
   
5. Tap Phone Lock.
   
6. Tap the desired option.
   Note: For this demonstration, 'Lock Phone Now' is selected.
   
7. Enter the required security code, then tap OK.
   Note: The default security code is '0000.'