1. From the home screen, tap Settings.
   
2. Scroll to, then tap Display.
   
3. To adjust the screen timeout, tap Screen timeout.
   
4. Tap the desired option.
   
5. To adjust the screen brightness, tap Brightness.
   
6. To manually set the brightness, ensure that Automatic brightness is disabled.
   
7. Touch and drag the Brightness slider to the desired level.
   
8. Tap OK.
   
9. To lock or unlock the screen orientation, swipe down from the top of the screen to reveal the Quick Settings menu.
   
10. Tap Screen rotation.