1. To turn the device on, press and hold the Power/Lock button until you see LG on the screen. 
   
2. To turn the device off, press and hold the Power/Lock button. 
   
3. Tap Power off.
   
4. Tap OK.
   
5. If you are unable to turn your device on, plug the device into a power source for 15 minutes, and then try again. 
   
6. If you are unable to turn your device off with the Power/Lock button, remove and re-insert the battery.