1. While on a call, tap speaker to turn speakerphone on or off.
   
2. Tap mute to turn mute on or off.
   
3. Tap Bluetooth to turn bluetooth on or off.
   
4. Tap hold to put the current call on hold.
   
5. Tap skype to initiate a skype video call.
   
6. Tap add call to add an additional call.
   
7. Tap end call to end the current call.
   
8. Tap the Dialpad icon to access the dialpad.
   
9. To access the home screen while on a call, Press the Home key.
   
10. To return to the call, tap TAP TO EXPAND.