1. From the home screen, swipe down from the Notifications bar.
   
2. Tap the Settings icon.
   
3. Under the My device tab, tap Display.
   
4. Tap Brightness.
   
5. Tap Automatic brightness.
   Note: Leave Automatic brightness enabled to optimize battery life.
   
6. Drag the slider to the desired level, then tap OK.
   
7. Tap Screen timeout.
   
8. Tap the desired screen timeout time.
   
9. To enable or disable screen rotation, tap Auto-rotate screen.