Holding the device
Do not cover the antenna area with your hands or other objects. This may cause connectivity problems or drain the battery.
Adjusting the volume
Press the Volume button up or down to adjust the ringtone volume, or to adjust the sound volume when playing music or video.
Switching to silent mode
Use one of the following methods:
•Press and hold the Volume button down until it switches to silent mode.
•Open the notifications panel at the top of the screen, and then tap Sound or Vibrate.