1. While on an active call, tap Speaker to turn speakerphone on and off.
   
2. While speakerphone is enabled, the Speakerphone icon will be displayed in the notifications bar.
   
3. Tap Mute to mute and unmute the call.
   
4. While muting is enabled, the Mute icon will be displayed in the notifications bar.
   
5. Tap Headset to enable and disable a Bluetooth headset.
   
6. To add a call, tap Add call.
   
7. Tap Keypad to access the keypad.
   
8. Tap Hold to put the call on hold.
   
9. To access the home screen, press the Home key.
   
10. To return to the call, swipe down from the notifications bar.
    
11. Tap the Call icon to return to the call.
    
12. Tap End.