Yes. I have tried changing baseband (modem) alone (flash - reset - flash - reset) and I can see in the phone's options that it has changed, yet the phone behaviour stays the same.
Is it possible that I have physically broken something by multiple re-flashings or swapping the sim cards? I mean someone suggested that this is problem with SIM port but this seem unlike as the phone should still be able to connect emergency calls, shouldn't it?
You might accidently erased your IMEI? Check under about phone/status.
Phone:Samsung Galaxy S4 Mini LTE (GT-I9195)
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