1. While on an active call, to mute or unmute a call, tap the Mute icon.
   
2. To turn Speakerphone on or off, tap the Speaker icon.
   
3. Push the Up and down volume keys to adjust volume during a call.
   
4. To add a call to an existing call, tap the Add call icon.
   
5. To show the keypad, tap the Keypad icon.
   
6. To hide the keypad, tap the Keypad icon.
   
7. To put the call on hold, tap the Hold icon.
   
8. To access the home screen while on a call, press the Home button.
   
9. To return to your active call, tap the Phone icon.
   
10. To end a call, tap the End call icon.