1. From the home screen, drag down from the Notifications bar with two fingers to access the menu.
   
2. Tap SETTINGS.
   
3. Tap Display.
   
4. To change the screen time-out, tap Sleep.
   
5. Tap the desired option.
   
6. To change the screen brightness, tap Brightness.
   
7. Drag the Brightness slider to adjust the brightness.
   
8. Tap AUTO to toggle automatic brightness on/off.
   
9. Tap Auto-rotate screen to lock/unlock the screen orientation.