1. During a call, press the side Volume keys to raise or lower the volume.
   
2. Tap Speaker to turn speakerphone on or off.
   
3. Tap Mute to turn mute on or off.
   
4. Tap Dialpad to show the keypad.
   
5. Tap Dialpad again to hide the keypad.
   
6. Tap Add call to begin three-way calling.
   
7. Tap End to hang up.
   
8. Tap Hold to put the call on hold.
   
9. For more settings, press the Menu key.
   
10. To access the home screen, press the Home key.
    
11. Press the Call icon to return to the active call.