1. While on an active call, press the Volume keys to adjust the call volume.
   Note: When in 'Easy' mode, you can't mute a call, place a call on hold, create a conference call, or access advanced settings.
   
2. While on an active call, tap Bluetooth to connect to a Bluetooth headset.
   
3. Tap Mute to mute your microphone.
   
4. When the microphone is muted, the Mute icon will display in the Notification bar.
   
5. Tap Speaker to enable speakerphone.
   
6. When speakerphone is active, the Speaker icon will display in the Notification bar.
   
7. Tap Add call to make another call.
   
8. Tap Keypad to display the keypad.
   
9. To place a call on hold, tap Hold.
   
10. While on hold, the Hold icon will display in the notification bar.
    
11. Press the Home key to return to the home screen while staying connected to the current call.
    
12. To return to the call, swipe down from the top of the screen.
    
13. Tap the Call widget to return to the call.
    
14. To hang up, tap End call.