Hi everybody, I know that this topic has been discussed before, but can't find an answer to my specific question. So I'm on a family plan and my line isn't eligible but someone else's is. Gonna buy on their line and do the usual sim swapping. I know you have to call AT&T to transfer data plans/imei (?) numbers and everything. Just wondering can I do this all in the apple store without having to call AT&T/going to an AT&T store? I know sim card swapping you can do on your own, but not sure if apple can transfer the data plan and everything else. Thanks.