iPhones with the older firmware can be unlocked (at your own risk) to work w/ any GSM carrier worldwide.
ok, I'm a mac user at home and windows at work...any advice for selecting the perfect phone? I'd love an iphone, but i have a t-mobile account and its not an option (yet)... I'm not sure which operating system is the most compatible. I'm looking at the HTC HD2...thanks for your input.