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