How to perform a call via "Callback" method
1. Open Voxofon application
2. Open Voxofon keypad
3. Set call method to "Callback" by tapping on "Outgoing" button on bottom right action bar
4. Enter destination number on Voxofon keypad
5. Press Call
6. The call will be initiated and you will receive an incoming call to the phone number that is set under "Account Settings" > "This mobile number" section, so make sure that the number is set correctly there.
7. After you receive an incoming call on that phone number answer the call > Voxofon will connect your call to the destination that you entered on Voxofon keypad.