I am running PA 4.4Final with the stock kernel. The radio was working perfectly fine for 2 hours on roaming, but then randomly stopped working for the past 2 days. I am now back on my home city network and the issue remains.
The cell phone is receiving a healthy signal and even identifying available networks. But for some reason, any manually selected network isn't "available", and if I keep the setting to automatic selection, I get only emergency calls status. The service status is also "out of service" ?!
I'm attaching thumbnails for your benefit. WiFi and other wireless services are working fine. Is this a Samsung problem, or a software one?