i have a fully functional jailbroken iphone as of this weekend. i already have/had an existing AT&T contract. so, i just put the sim in from my old phone.
now, which data plan do i add to my account? i've heard there's a $20 unlimited data plan with no visual voice mail. this would be great. but, what do i ask for when i go into the AT&T store to get this one?
or, are there other better plans?