Hey, thanks in advance for any assistance offered. I have a Galaxy S8+ that I believe was fine when I placed it to charge overnight, however, when I woke the GSM signal bar area was greyed out with an 'x' next to it. I tried factory resetting, no joy, I also tried reloading the ROM via Odin, also no joy. The IMEI number can still be seen in settings. Everything else on the phone works perfectly. Is there any other testing that can be done to isolate the issue? Any suggestions would be greatly appreciated.