Answers: No I belive Cingular will be the merely one that has the Iphone when it's released.
Also apple is anyone sued over calling it the Iphone, apparently some other company already has one designed next to that name.The clean Apple iPhone will only work near Cingular no other cellular phone networks.
Cingular Wireless, the No. 1 U.S. wireless network and a section of AT&T Inc. (NYSE:T - news), has a multiyear and exclusive agreement to provide U.S. service for the iPhone, Cingular Chief Executive Stan Sigman said.No. The Apple iPhone is a GSM phone. Verizon's see is CDMA. The two digital technologies are incompatible next to each other. You could procure a roaming SIM card from Verizon and if you figured out how to unlock the iPhone from Cingular, next you could use it with Verizon, paying over $1/minute for every call for ;-)