buy it from a T-mobile vendor only? I want to know if any other phones from different companies are compatible with T-Mobile if i try to put my SIM card into it?? Any suggestions is appreciated...thanks..
If you want to use your T-Mobile sim on phone from different company means,You will need to unlock your phone.
For unlocking you can approach your service provider or else try to buy an unlocking service from any one of the online unlocking service provider like ProUnlocking.com