1. From the home screen, tap Apps.
   
2. Swipe to, then tap Settings.
   
3. Scroll to "Personal", then tap Lock screen.
   
4. Tap Screen lock.
   
5. Tap Password.
   
6. Enter the desired password, then tap Continue.
   
7. Confirm your password, then tap OK.
   
8. To unlock your device, enter your password, then tap the Done key.
   
9. To change your screen lock, from the home screen, tap Apps.
   
10. Swipe to, then tap Settings.
    
11. Scroll to "Personal", then tap Lock screen.
    
12. Tap Screen lock.
    
13. Enter your current password, then tap Continue.
    
14. Tap the desired screen lock and follow the on-screen prompts.