Hi, I'm looking for the Samsung Galaxy S2 and cause I use T-mobile I know I'll have to get the T989 if I want the 3G/4G networks to work. I also travel a lot so I was looking for the phone unlocked in Ebay and I found some of them that they're supposedly unlocked, but they clarify that the phones DOES NOT work with T-mobile. So how can be like that? I mean if it's a T-mobile phone why doesn't it work with T-mobile networks? Does it mean if you unlock your t-mobile device it won't work with T-mobile network again?? it leaves me very confused. If I just get a T-Mobile Galaxy s2 that is not unlocked and I ask for the code to T-mobile so then I unlock the phone, will I be able to use T-mobile again?. I have seen some videos on youtube that you can get your unlock code just straight from T-Mobile, is really that easy? I know it sounds kind of stupid, but I want to be sure before spending +$400