i live in china and use a mi2, but my roommates are going back home and some of my friends there wanted to buy hongmi.. i tried to buy it from official website but thats just impossible.. it gets sold out in minutes.. so i looked it up on other websites and there are 3 different versions being sold here: 1. official website version 2. chinamobile version 3. china unicom version are the unicom/mobile version carrier locked? if so can they be unlocked? because my friends will obviously not use the mobile in china. please recommend which one should i buy. EDIT: also to the developers, will the ROMS be different for the 3 versions? or just different modems?