1. To lock your device and put it to sleep, press the Power/Lock key.
   
2. To wake your device, press the Power/Lock key, then swipe in any direction to unlock.
   
3. To change the Lock screen security type, swipe down from the Notification bar, then tap the Settings icon.
   
4. Under the My device tab, tap Lock screen.
   
5. Tap Screen lock.
   
6. Tap the desired option.
   Note: For this demonstration, tap 'PIN'.
   
7. Enter the desired PIN.
   
8. Tap Continue.
   
9. Re-enter the desired PIN.
   
10. Tap OK.
    
11. To access your device, from the Lock screen, enter your PIN, then tap OK.
    
12. To change the Lock screen security type, from the Lock screen menu, tap Screen lock.
    
13. Enter your current PIN number, then tap Continue.
    
14. Tap the desired option, then follow the on-screen prompts to set up.