1. From the home screen, tap the Settings icon.
   
2. Scroll to, then tap Security.
   
3. Tap Screen lock.
   
4. Tap Pattern.
   
5. Draw the desired pattern, then tap CONTINUE.
   
6. Re-draw the pattern, then tap CONFIRM.
   
7. Select the desired option, then tap DONE.
   
8. To unlock your device, draw the selected pattern at the Lock screen.