My Lumia 640 XL can’t connect to a network. Any ideas?
It’s really weird, the phone works perfectly, connects to WiFi and runs as well as it can. The only issue is, when I insert the SIM card, it instantly comes up with an icon showing that it can’t find a network. When going into the SIM settings, it clearly can recognize that it’s an AT&T SIM card, but it can’t find the network. This SIM card works on my iPhone and my Android. I’ve tried other SIM cards in the Lumia and it does the same thing, recognizes the carrier but won’t find a network. Does anyone know what could be causing this?
Is this a good question?