1. Press the Volume keys to adjust ringtone volume.
   
2. After pressing the Volume keys, tap the Arrow icon to expand the ringtone settings menu.
   
3. Touch and drag the Volume sliders to adjust device volume.
   
4. Drag the Ringtone + Notifications volume slider to zero to silence the phone.
   
5. With the phone on silent, tap Vibrate to toggle vibration mode on / off.
   
6. A Vibration icon will appear in the Notifications bar while Vibration mode is toggled on.
   
7. A Silent icon will appear in the Notifications bar while Silent mode is toggled on.