1. While on an active call, press the Volume keys to adjust the call volume.
   
2. Tap the Mute icon to mute the call.
   
3. When a call is muted, the Mute icon will display in the notification bar.
   
4. Tap theSpeaker icon to put the call into speakerphone mode.
   
5. When speakerphone is active, Speakerphone icon will display in the notification bar.
   
6. Tap the Dialpad icon to display the keypad.
   
7. Tap the Dialpad icon again to hide the keypad.
   
8. Tap More to see more in-call options.
   
9. Tap the Contacts icon to add a person to the call.
   
10. Tap the Hold icon to place the call on hold.
    
11. While a call is on hold, the Call Hold icon will display in the notifications bar.
    
12. While on a call, the Call icon will display in the notifications bar.
    
13. To access the Home screen while on a call, tap the Home key.
    
14. To quickly return to your call, swipe down the Notification bar.
    
15. Tap the Notification.
    
16. Tap the End icon to end the call.