1. From the home screen, swipe down from the Notification bar with two fingers, then select Auto-rotate to lock/unlock the screen orientation.
   
2. To access additional display settings, select the Settings icon.
   
3. Scroll to Device, then select Display.
   
4. Select the Adaptive brightness toggle to turn automatic brightness On or Off.
   
5. Select Brightness level.
   
6. Drag the Brightness slider left or right to adjust the brightness manually.
   
7. Select Sleep to change the screen timeout.
   
8. Select the Desired option.