1. Swipe down from the Notification bar, then select the Settings icon.
   
2. Select Display.
   
3. ADJUST BRIGHTNESS: Select and drag the Brightness slider left or right to adjust the brightness manually. 
   
4. ADJUST SCREEN TIMEOUT: From the Display screen, scroll to and select Screen timeout then select the desired timeout option.
   
5. LOCK/UNLOCK SCREEN ROTATION: Swipe down from the Notification bar, then select the Auto-rotate icon.