1. From the home screen, swipe down from Notification bar and select the Settings icon.
   
2. Select the DEVICE tab then select Display.
   
3. Select Brightness.
   
4. To turn off the Auto brightness, uncheck the Automatic brightness checkbox, then touch and drag the brightness slider to the desired level.
   
5. To adjust the Screen timeout, select Screen timeout.
   
6. Select the desired time.
   
7. To lock or unlock screen rotation, swipe down from the Notification bar, then select Auto rotate.