Does anyone know how to activate the new sim card came with the iphone 12 pro? I ordered from att, and I now have to use my old sim card in the new phone. I only got one piece of paper saying go to att.com/getstarted, but I don't know how to activate the new sim card. I put the new sim card into my new iphone 12 pro but there is no service, I restarted and still no service. Does anyone have the same issue? Thanks a lot for your help!