Two questions about the Sprint iPhone

[Chakravartin]

Winston wrote:
A SIM card is required for roaming on GSM networks. Verizon offers several dual-mode phones that include SIM cards:
http://b2b.vzw.com/international/Global_...index.html

So I do think they have roaming agreements with GSM providers.

I stand corrected.

Verizon does sell a couple of world-phone handsets that have GSM SIMS that can be activated to roam on foreign GSM networks (and notably, not on AT&T's network).

But they still have zero motivation to do so for the iPhone 4S.