TURN ON DEVICE: Press and hold the Power/Lock button on the back of the device until the screen lights up. Note: If you are unable to turn your device on, plug the device into a power source for 15 minutes, and then try again.
TURN OFF DEVICE: Press and hold the Power/Lock button. Select Power off, then select POWER OFF again to confirm. Note: If you are unable to turn your device off with the Power/Lock button, press and hold the Power/Lock and Volume down buttons for 10 seconds to force restart the device.