1. From the home screen, swipe down from the Notification bar.
   
2. Tap the Settings icon.
   
3. Scroll to, then tap Display & gestures.
   
4. Tap Auto-rotate screen to lock/unlock the screen orientation.
   
5. Tap Brightness level to adjust the brightness.
   
6. Tap Automatic brightness to toggle on/off.
   
7. Drag the Brightness level slider to manually adjust the brightness.
   
8. Tap Screen timeout to set the screen timeout.
   
9. Tap the desired option.
   
10. Adjust additional display settings as desired.