Hi, I'm thinking about getting the EDGE iPhone and using it with T-Mobile, but first I wanted to ensure that all the 2.0 stuff works with it when jailbroken (as I think a team has already done it, so maybe someone here will know)
if or when the 2.0 firmware does get unlocked and jailbroken I don't see why all features wouldn't work on T-Mobile since nothing is carrier dependent. The only possible problem would be if an app relied on a faster 3G connection vs edge.