1. Press the Volume keys to adjust the device volume.
   
2. Press the Power/Lock key to lock or unlock the screen. Press and hold the Power/Lock key to turn on the device or access the Power off screen.
   
3. Press the Camera key to access the camera.
   
4. Press the Back key to return to the previous screen. Press and hold the Back key to view recently used apps.
   
5. Press the Home key to access the home screen or, to unlock the device.
   
6. Press the Search key to access Cortana. Press and hold the Search key to access Voice command.