So, I'd like to get the facts here before contacting AT&T, in case they try roping me with fees or a new contract. I purchased an iPhone 3G at launch, so I've got a little over a year to go. My new job only allows BlackBerry devices for security reasons, so I'm trying to figure out my options here. I would not like to pay two data plans (keep iPhone + new BB) and still carry around two phones. Does the iPhone data plan work with the BB if I swap SIM cards? Even then, that seems like a pain...I may be forced to give up my iPhone. Would I be required to pay cancellation fees for my contract and sign a new two-year for a BB? Thanks for any help.