Two questions about the Sprint iPhone

[rgG]

silvarios wrote:
[quote=fmgtech]I thought the new iPhone 4S was supposed to be a world phone, meaning it would work on AT&T, Verizon, or Sprint?

Yes, but Verizon and Sprint still don't use SIM cards for their CDMA service. Nor does it mean the 4S is unlocked when you buy one, from my understanding anyway.
Correct. It is capable of working on all three carriers, but all the phones are locked to one carrier. You can buy a factory unlocked AT&T iPhone, which means you could use it with TMobile here or other carriers overseas, but the Sprint and Verizon phones are locked to the carrier.