iPhone 6 "searching" or "no service" cellular signal
My iPhone 6 keeps showing "no service" or "searching" cellular signal,
I've already tried every help support given in Apple.com but my Iphone stills without getting any cellular signal.
I've tried:
Restoring my iPhone
Switching ON/OFF airplane mode
Move to a different signal reception area
Restoring Network settings
Exchange nano SIM
Logout/Login from iCloud/iTunes/App Store
It is not a carrier issue because they put my SIM into another iPhone and it worked, so it is definitely my device
Has any of you any advice on what should I do next?
I'm kinda hoping that this issue can get fixed with iOS 8.4
iPhone 6, iOS 8.3, Model MG5A2LL/A