1. While on a call, Press the Volume keys to adjust the volume.
   
2. Tap Mute to toggle mute on/off.
   
3. While mute is enabled, the Mute icon will display in the notification bar.
   
4. Tap Speaker to toggle speakerphone on/off.
   
5. While speakerphone is enabled, the Speakerphone icon will display in the notification bar.
   
6. To use a headset, insert the plug into the Headphone jack on bottom of the device.
   
7. When headphones are in, the Headphone icon will display in the notification bar.
   
8. Tap the Menu icon to access additional options.
   
9. Tap Hold to place the call on hold.
   
10. Tap Add call to add a call.
    
11. Tap the Dialpad icon to access the dial pad.
    
12. Tap the Dialpad icon again to hide the dial pad.
    
13. To access an app while on a call, tap the Home button.
    
14. To return to the call, swipe down from the the top of the screen and tap the Call box to return to the call screen.
    
15. Tap END CALL to hang up.