The Issue: I have a Samsung Galaxy SIII that was sent to me as a replacement for my older phone which had been running CM11 with no issues. I rooted and re-flashed a newer ROM to this device with minor issues (Just had to change the CDMA subscription to RUIM/ SIM). I was able to use the mobile data fine. However, when I went to make a call, I receive a recording saying that I am roaming. I have tried flashing back to the stock ROM, changing the radio to only use CDMA (Not 4G/ LTE), flashing older versions of CM11. None of this has yielded any results. I check the phone status and it says that the device is connected, shows the correct phone number, and also says that I am not roaming.
Any help would be greatly appreciated. Thanks!