[powercx]

You can't use the BIS Plan? When I had the AT&T Tilt, I have a blackberry plan with BIS, nothing else. I still pay $30 per month, but I can still use my Tilt and the Blackberry Plan. I even switch to my 8800 once in awhile back then. You should try, you might get the basic data plan for the iPhone, but at least you don't have to play around with the Feature in AT&T Site whenever you want to switch phones.