I have a question that I hope someone can answer for me. I currently have a gsm phone and data service through AT&T. I was wondering if when the gsm version of the 650 becomes available, would I be able to buy an unlocked one and take the sim card and put it into the treo?

Would I then be able to use it on the AT&T system (voice and data) even if AT&T has not approved or are offering the 650 yet?

Or do I need to switch to a different carrier that is offering the 650?