I am considering getting an unlocked docomo smart phone from japan, the fujitsu f-03d, which uses wcdma and is capable of gsm also, so if i got an unlocked one, could I use it on t-mobile with my sim card? it says it uses a micro-sim, so i could possibly change to one of those, which is not a big deal for me, and i know certain features, like the japan specific apps, wouldnt work, but all in all, if i got it unlocked and put in my sim card, would it work?