For the international caller, you can more easily use Google Voice’s discounted calling rates which have recently been lowered again.No foreign SIM card or even Skype account required. For the international traveler, as long as you have WiFi in a supported country you can call back home to the US for free using your phone.You can also use voice over data to complement T-Mobile’s $30 plan which offers 5 GB of 4G data but only 100 voice minutes (this plan isn’t heavily-advertised, but scroll down and you’ll find it). You can pay for a cheap prepaid option as a backup, or simply go without any cellular plan. For the frugal minimalist, as long as you have a data connection like WiFi, you can now make and receive unlimited domestic voice calls using a basic Apple or Android device.and Canada are currently provided by Google free of charge from all countries where Hangouts calling is available. You can also receive calls if you have a Google Voice number. Both iOS and Android apps can now make domestic and international calls through a Wi-Fi or data connection (like 4G). Google has just announced better integration between Google Voice and their Google Hangouts smartphone app.
