If I don't restart my mobile every once in a while I'm unable for call anyone. The problem started after updating to 10.3.1.1565. Does anyone know if there is a bug fix or anything or if I have to switch to another OS version?
Go to the leak section. Find thurask's thread. Got to the radio autoloaders section and try another radio there. It's non destructive and doesn't take long. Try a few until you get one that works.