I'm planning on switching to AT&T, but will Apple Online accept Gift Card for my payment for the iPhone? Also, my mother qualifies for a FAN discount. With the July 14, shipping date that is right in time for my contract to be done with through T-Mobile. Can I pre-order an iPhone right now with a single line, and go to At&T the day I receive it to get a family plan, and with the other line just a regular phone?