[forcelite]

Please answer only if you know what your talking about.
Everyone knows Sprint is CDMA, however on their world phones they put in a Sprint GSM card that is supposed to be used overseas and still on your sprint account,
So, if one was to use that GSM Sim card in an unlocked phone, there is no proof it wont work being as it is a GSM sim card, and has nothing to do with the CDMA technology.

Even if it was just using the universal Edge network, it would still technically work on an unlocked phone.

I have seen this asked before but no one has tried it, I have an iphone that I might unlock if my buddy will give it to me since it has been in my desk for a month now.

Force