1. To power on, press and hold the Power key.
   
2. To power off, first press and hold the Power key.
   
3. Continue to hold the Power key to power down the device.
   
4. If you are unable to turn your phone on, plug the phone into a power source, and then try again.
   
5. If you are unable to turn your phone off with the Power key, remove and re-insert the battery.