1. To increase the ringtone volume, press the Volume Up key.
   
2. To decrease the ringtone volume, press the Volume Down key.
   
3. To enable vibrate mode, with the volume at the lowest setting, press the Volume Down key.
   
4. To enable do not disturb mode, tap NONE.
   
5. Do not disturb mode will be active indefinitely. To set a desired duration, tap the Duration tickmark.
   
6. Tap the + and - icons to increase or decrease the desired do not disturb mode duration.
   
7. While vibrate mode is enabled, the Vibrate mode icon will be displayed in the notifications bar.
   
8. While do not disturb mode is enabled, the Do Not Disturb icon will be displayed in the notifications bar.