1. While on an active call, press the Volume buttons to adjust the call volume.
   
2. To enable speakerphone, tap speaker.
   
3. To mute your microphone, tap mute.
   
4. Tap Bluetooth to connect to a Bluetooth headset.
   
5. Tap the Dialpad icon to display the dialpad.
   
6. Tap the Dialpad icon again to hide dialpad.
   
7. To make another call, tap add call.
   
8. To end a call, tap end call.
   
9. To place the current call on hold, tap hold.
   
10. Tap the Start key to return to the Start screen while staying connected to the current call.
    
11. To return to the call, tap the Notification bar to open phone window.