1. From the home screen, tap Apps.
   
2. Swipe to, then tap Settings.
   
3. Scroll to "Personal", then tap Lock screen.
   
4. Tap Pattern.
   
5. Draw the desired pattern, then tap Continue.
   
6. Re-draw your pattern, then tap Confirm.
   
7. Enter a backup PIN, then tap Continue.
   
8. Confirm the desired PIN, then tap OK.
   
9. To unlock your device, touch then drag to draw the set unlock pattern.