Question about Data Unlimited Plan

[RevolveR]

I want to get 3G on my iPhone, but my SIM isn't from the iPhone it's for my LG VU, can I still get 3G if I get the $30 plan, or will AT&T make me get a whole new plan?

 

[bakerster]

if your really not sure why not just go into at&t and ask them for a new one?

 

[Dominat0r]

ATT told me that to even buy the iPhone with a discount, you MUST add the 30$ iPhone data plan.

I had the PDAunlimited plan for my Blackjack2...once i got the iPhone i had to reactivate my number on the new sim via iTunes.

You old sim will NOT work...at least mine didnt. It will not register on the phone itself when i put the older sim card in there.

 

[RevolveR]

I'm using it right now, just with no data plan, I can't just add on the data plan to my current plan? (The $30 one for the iPhone)