Hi,
I bought an Iphone SE in the UPC shop and it is operational since last weekend. I managed to receive phone calls. Since Friday I am abroad and I cannot be reached. When someone tries to call me they get “Diese Rufnummer ist ungültig”!
Sim card is properly installed and recognised by phone. I have rebooted the phone a few times but still the same problem. I need an urgent fix as I wil be abroad until 7/12
thanks