I have been looking for solution all over the internet. Googling my problem and couldn't find a fix. So here is my story.
I've bought a original Samsung galaxy S4 from Thailand. It worked fine etc. no problems at all (I used my home country sim). When I came back
from my vacation the phone still worked fine until I removed my battery and took my sim card away and but it back on. The phone says no service and imei is null / null.
I have tried the IMEI null / null with Odin, I have rooted my phone, I have downloaded new modem also tried to open it by going system main menu (*#0011#) but it was plain black no numbers or anything. Also I have confirmed that my Samsung is genuine. I suspect that my phone is SIM-/country locked
So the majority of the post that I read were back from 2013 summer so Samsung has propably fixed or patched some of the fixes.
Thanks in advance