Looking for some SIM card help
I have read all of the threads about SIM card problems in the car and I still have a question with which I'm hoping the group can help. I have a 2019 model currently on software version 18D. It has a SIM card in the slot, but it is unable to receive things such as traffic, weather, etc. that are supposed to be controlled through that. When I go in the connectivity settings, it says "Reading SIM" but never gets beyond that. I've tried to remove it and re-seat it. I can connect to Wi-Fi while at home, where there is a very strong signal in the garage, but the car forgets it every time I get leave and come back. Software updates is turned on but so far when I press the "check for updates" button it says there is no update available. On the display, in the upper right-hand corner there is an icon is of a G with a slash through it. I brought the car to dealer (where it is now) and they said that they can't figure out what's wrong with it. They asked me: "are you 100% sure your account is set up with at&t. All software updates are complete, but the vehicle still wasn't reading your sim card. He put a known good sim card from another customers vehicle and it worked perfectly fine. Let me know. TY". While I didn't think registration was necessary, I did go through the in control website and visit AT&T's website to try to activate data to which their answer is "VIN not found". Any ideas? Thanks!