Don't be fooled by what AT&T tells you up front. There are some very negative things about the Iphone that they don't tell you.
Such as, don't bring it back to AT&T if you have a problem with it.
Take it to an Apple store. AT&T is on lamost every corner in America and a five minute drive from my house. The closest Apple store is 70 miles away.
And you need to make an appoinment first. Trying to get someone to answer the phone at Apple is like trying to wake up the dead. And, if you get a business discount with your previous phone, there is no discount with the Iphone. And, if you discontinue service with your Iphone, they will try to tell you that you loose your phone number if you want to go back to a phone with discounts.
Apple has their hands in the cookie jar too much on this!
Don't buy one! Trust me...