What services wont work on an unlocked iphone?

Question

I have T-mobile and want an iphone, what services will and will not work when I use it on my T-mobile network?

Answer 1

http://tinyurl.com/5ktvgp

Answer 2

Pretty much everything will work with the T-Mobile network. The only thing you won't get is the visual voicemail. That's it!! Visual voicemail isn't important...it'd be nice to have, but it's just a luxury.