I wanted to purchase this, Pre-Order TPSIM Special Version for CDMA Sprint iPhone4s Automatic unlcok NO112 | eBay Has anyone tried it and does it really work. I want to unlock my Sprint 4S and use on USA T-mobile.

I was thinking about buying the Sprint 32GB white one from a friend. Does this phone have a Micro SIM port? Will GSM carrier like AT@T work on it? I know there isn't an unlock for it yet. But wanted to buy it for future. Basically I need to know is the AT&T iphone 4S same as the Sprint...