does any one know if it is possible if you take a sim card out of a T-mobile pay as you go phone and put it in

Question

does any one know if it is possible if you take a sim card out of a T-mobile pay as you go phone and put it in a T-mobile smart phone that they only sell to you if you sine up for a contract. but im not shure if I put the pay as you go phone som card in the T-mobile smart phone if it will work if if i need to crack or unlock it.

Answer 1

A pay as you go plan sim card can be put into any unlocked gsm phone or one that is locked to t-mobile and it will work on t-mobile.