No service and works, no service again.
The wife has an iPhone 6. And Litterally just after she finished a phone call, the phone went into no service.
So tried my Sim (different network) and still the same.
Did a reboot, network reset, switch from airplane mode and back. Still shows baseband number when dialing *#number
And a check mend report shows the number imei is still clear/not cloned.
Service will randomly come back for a while, then go.
Replaced the top antenna, still done the same thing. Replaced the bottom antenna/charging port. And it worked for 3 hours, then just went back to no service again.
Only thing left is a factory reset, but I really doubt it's something like that. Plus my PC doesn't seem to like restoring iphones. I always get iTunes errors during the process.
I'm out of ideas now.