1. To change the volume while on an active call, press the Volume buttons.
   
2. To mute or unmute a call, select Mute.
   
3. When mute is enabled, the Mute icon will be displayed in the Notification bar.
   
4. To turn speakerphone on or off, select Speaker.
   
5. When speakerphone is enabled, the Speaker icon will be displayed in the Notification bar.
   
6. To place the call on hold or resume a call on hold, select Hold.
   
7. When a call is placed on hold, the Hold icon will be displayed in the Notification bar.
   
8. To show or hide the dialpad, select the Dialpad icon.
   
9. To access the home screen, select the Home key.
   
10. To return to the call, select the Green bar on the top of your screen.
    
11. To add a call, select Add call.
    
12. When adding a call, the original call will be placed on hold. To merge the calls and create a conference call, select Merge calls.
    
13. To end an individual call or split the conference call, select Manage conference call.
    
14. Select the End call icon to end the call with the desired number. Select the Split icon to separate the calls.
    
15. To end a call or conference call, select the End call icon.