This may be a simple question, but I just don't understand this issue. I currently own a 1st gen iPhone, and I am currently on an AT&T Family Talk plan (my wife also has a 1st gen iPhone). I'm going to purchase the iPhone 3G for both of us on July 11. If I can get my IT dept to allow me to access my Exchange account (granted, that is a very BIG "if"), then I'm going to set up my work email/contacts/calendar on the iPhone 3G. I've noticed in the fine print on the AT&T news releases today that "if you plan on using Exchange access, you need to choose an Enterprise data plan". So if I get my new iPhone 3G and keep my personal Family Talk plan (without converting to an Enterprise plan), can AT&T block the Exchange access on my iPhone? In my mind, I was thinking that I would be able to access my corporate email on my account as it currently stands. Is that not the case?