iphone 5 separate line upgrade

[redrider218]

My moms line is eligible for an upgrade but mine is not. I was wondering how can I preorder an i5 for 199 using her line but having the phone put on my number and line. I was going to just swap the sims but I cant do that now with the nano sim. Both numbers are on the same account. ATT unlimited data plans by the way both lines.

 

[djransom]

Use her line to upgrade as usual and then once you receive the phone head to the AT&T store to do complete cross upgrade swap.