1. While on a call, tap the Speakerphone icon to enable and disable speakerphone.
   
2. While speakerphone is enabled, the Speakerphone icon will be displayed in the notifications bar.
   
3. Tap the Mute icon to mute and un-mute the call.
   
4. While the call is muted, the Muted icon will be displayed in the notifications bar.
   
5. To access the keypad, tap the Keypad icon.
   
6. To put the call on hold, tap the Pause icon.
   
7. To add a call, tap the Add call icon.
   
8. To access the home screen while on a call, tap the Home key.
   
9. While on a call, the In-call icon will be displayed on the homescreen in the notifications bar.
   
10. To return to the call, swipe down from the notifications bar.
    
11. Tap the call.
    
12. To end the call, tap the End call icon.
    
13. While on an active call, press the Volume keys to adjust speaker volume.