There are significantly more than two CDMA carriers selling the iPhone.
Verizon Wireless (USA)
Sprint (USA)
C-Spire (USA)
Cricket (USA)
au (Japan)
SK Telecom (SK)
ACS Wireless (Alaska)
Appalachian Wireless (Kentucky/Virginia)
Cellcom (Wisconsin)
MTA Wireless (Alaska)
nTelos (Virginia/West Virginia)
Bluegrass Cellular (Kentucky)
Golden State Cellular (California)
Nex-Tech Wireless (Kansas)
Open Mobile (Puerto Rico)
I'm not sure that's all of 'em.
Verizon Wireless (USA)
Sprint (USA)
C-Spire (USA)
Cricket (USA)
au (Japan)
SK Telecom (SK)
ACS Wireless (Alaska)
Appalachian Wireless (Kentucky/Virginia)
Cellcom (Wisconsin)
MTA Wireless (Alaska)
nTelos (Virginia/West Virginia)
Bluegrass Cellular (Kentucky)
Golden State Cellular (California)
Nex-Tech Wireless (Kansas)
Open Mobile (Puerto Rico)
I'm not sure that's all of 'em.