Listed under what to bring:
> Credit card
> Social security number
> Valid, government-issued photo ID
> Your current wireless account number and password or PIN (if you’re new to AT&T)
—
I think there are some other Flutherites who might be able to answer this definitively, but to me, when I see the mention of that last item, it’s talking to the actual account holder.
OTOH, I tend to be too literal in how I read things.
Worst case, I’d think your mom would just need to establish a new account on your behalf. I’m reasonably confident that you’ll still go home with an iPhone.