1. To turn on battery saving features on your device, scroll to and tap Settings.
   
2. Tap Display.
   
3. Adjust the Screen brightness, by using the slider.
   
4. To change the screen timeout duration, tap Display timeout.
   
5. Tap desired option.
   
6. To change the Wi-Fi range, from the home screen tap Wi-Fi. 
   
7. Tap Options.
   
8. Tap Wi-Fi range.
   
9. Tap Standard.
   
10. For additional information about charging your battery, please search tutorials for 'Charge the Battery'.