Voxofon application has three main call methods to call any destination worldwide within the application with very low international rates.
Three calling methods are: Local call option, WiFi/Internet call option and Callback option.
1, WiFi/Internet call option:
The WiFi/Internet call method only uses Internet data, plus the Voxofon credits on your account. You can call any destination by simply entering destination number in Voxofon application keypad, setcall type to WiFi/Internet call option and pressing Call button. User you are trying to reach will receive the phone call even if they don't have Voxofon application installed.
2, Local call method:
The Local call method uses mobile plan minutes for calling a local number plus Voxofon rates once call is established. You should see a call to local number in your native phone app.
Callbacks only use Voxofon credit and a small amount of data to establish the call, but it is more expensive then WiFi/Internet call option or local call option, your mobile plan minutes are not used.