Chosen Solution
I have a Samsung Galaxy S6 from AT&T USA that got unlocked. I’ve used it for several months with no problem, but all of the sudden, after a reboot I would not get mobile service, and IMEI has changed to 350000000000006. Can you please tell how can I fix the IMEI?
Call AT&T the provider the phone is under and ask them to check on there end why your unlocked phone IMEI change and to see if they can restore it.
bla bla bla dont even works u need a box
