Hey everyone, this isn't really a question more or less of me just ranting cause I was really really really mad that this had happened but want other to be aware of it. Yesterday my S20 ultra had an update come in, so i said sure and let it do it's thing. As it was updating i noticed my phone kept restarting a lot and then my SIM card was dead and my IMEI was empty. I have no idea why or how that happened but it did and there was legit nothing AT&T could do in the store to help restore my phone. So just a heads up that is kinda a thing this last update did to my phone and not sure if it has happened to others.