1. From the home screen, swipe down from the top of the screen to reveal the Device Settings menu .
   
2. Tap Settings.
   
3. Scroll to, then tap Security and Privacy.
   
4. Tap Device Password.
   
5. Tap the Device Password switch to toggle on or off.
   
6. Enter the desired password.
   
7. Tap the Confirm password field, then re-enter the chosen password.
   
8. Tap OK.