Is there another cell phone provider other than AT&T that provides services for I phones users?
No, there are no other cell phone providers that provide services or I phone users apart from AT&T and its partner Apple. This mobile service provider offers a variety of services to your mobile phone like GPS, variety of ringing tones and entertainment inform of TV and games. http://cell-phone-providers-review.toptenreviews.com/cingular-review.html.
Verizon. It's actually better IMO. Stuck with AT&T iPhone though. :(
Verizon. But only the iPhone 4 is compatible.
Simple mobile and t mobile if the iPhone is unlocked.
Verizon but in my opinion AT&T is so much better
Verizon wireless. I got my IPhone 4 from Verizon.