The guy from the workshop said it was in a build or factory setting, and needed to basically be told it was finished been built. He did allsorts to it before plugging it in to be fair. He had not seen it before . I only know what i am told.
Yours may have been something more serious, mine was the same .
The car tries to obtain signal every few hours initially then reverts to twice a day thereafter and you usually get “E” symbol.
I had tech on phone for hours and reactivated services with them and they then booked in for some sort of GSM module repair, tried removing fuse rather than go workshop and then bloody worked.
Seems to do the job for 9-10 people.
Happy motoring 🙂