On Republic Wireless's website, they state you need to use the Moto X because of the way their software works to automatically switch you over to VOIP whenever possible. They said it is an issue with having the correct ROM on the device.
Has anyone gotten a hold of the ROM and tried to run it on a different device? I'd like to keep my SGS4 and if it's just an issue with a ROM then I don't see why it wouldn't work.
Here's my specific back story: I have an international SGS4 i9500. I've been using Airvoice Wireless for the last 6 months combined with a google voice VOIP phone number and have been loving my cell phone bill of $10/month. Up until this point I've been using the talkatone app as my VOIP whenever I have a wifi connection. Unfortunately, talkatone is going to start making its users pay for a membership to the app. As a result, I'm looking for other options and considering using Republic Wireless.