1. While on a call, swipe the green Phone icon to the right to answer an incoming call.
   
2. Tap the desired option.
   
3. To add another call while currently taking a call, tap Add call.
   
4. Enter the desired number.
   
5. Tap the Call icon.
   
6. Tap Merge to start a conference call.
   
7. Tap End call to disconnect.
   
8. To access Call waiting settings, from the phone screen, tap the Menu icon.
   
9. Tap Call settings.
   
10. Tap Additional settings.
    
11. Tap Call waiting to turn on or off.