Last August and September, I was in Africa. While there, I called and texted back to the US using a Voice over IP service called Line2. It is an app that works on the iPhone, iPad, or Android. All I can say is that it was great. I used it while connected to WiFi routers. One of the big things I liked about it was that I did not have to treat the calls as international. When I called back to Nashville, TN from Johannesburg, South Africa, I just dialed 615-xxx-xxxx. There was some lag, but the calls were still good quality.
- Local calling back to the US
- Flat rate of $9.95
- Good reception
- No international calling prefixes
The app also works through a 3G/4G connection on the phone, but I did not want to have to bother with and internation SIM card, pricing, and such.