1. From the Home Screen, tap the Left Soft key.
   
2. Scroll to Settings, then press the Center Nav key.
   
3. Scroll to Display, then press the Center Nav key.
   
4. Scroll to Main display, then press the Center Nav key.
   
5. To change the screen brightness, scroll to Brightness, then press the Center Nav key.
   
6. Press the Left and Right Nav keys to set the desired brightness. Then press the Left Soft key to Save.
   
7. To change the screen timeout, scroll to Backlight time, then press the Center Nav key
   
8. Use the Nav keys to select the desired option, then press the Left Soft key to Save.