1. To turn the device on, press and hold the Power/End key until the screen turns on.
   
2. To turn the device off, press and hold the Power/End key until the shutdown tone plays.
   
3. If you are unable to turn your device on, plug the device into a power source for 15 minutes, and then try again.
   
4. If you are unable to turn your device off with the Power/Lock key, remove and re-insert the battery.