It's true that during the Verizon - Apple press conference on the Verizon iPhone, it was made clear that the CDMA version of the iPhone was not exclusive to Verizon. In fact, it's already been said that CDMA handsets are heading for carriers in South Korea, Japan and China. Those handsets are being built by new Pegatron, while Foxconn continues to build AT&T's iPhones and Verizon's, as well.
Sprint is the nation's 3rd largest carrier, and just as Verizon does, it uses a CDMA network. Sprint has openly coveted the iPhone in the past, but so did Verizon. Meanwhile, while some wonder about Sprint, what's to prevent AT&T from distributing the iPhone to T-Mobile?
After all, T-Mobile is a GSM carrier, just as AT&T is, so a conversion for T-Mobile's network would simply involve modifying the GSM iPhone to handle the proper frequencies on T-Mobile's network, which differs from AT&T's.
Since some areas of the country, despite what Verizon and AT&T would like us to be believe, are better served by Sprint and T-Mobile, why not more carriers on the iPhone? The more the merrier, many would say (although the main carrier they want for the iPhone is, naturally, Verizon).
