iPhone 11 - no mobile signal
Hey, today my iPhone 11 lost mobile coverage. I can't enter "Cellurar" because it pops up an error that "cellular data transfer on this iPhone requires an update to be installed."
I have replaced the sim card with a new one, inserted, removed - zero response.
I can't install ESim either (it takes a while to download and just ends without any message)
iOS updated via iTunes - the phone also says the system has been mutilated and still doesn't work.
Do you have any more suggestions on what to try or is the phone over?
iPhone 11, iOS 17