How to unlock to t mobile and get 4g speeds?

[ceo.mtcl]

Can some please direct me to forum thread, for some reason I'm not able to get it...

Do I need to sim unlock it also to make it work with t mobile?

Sent from my SAMSUNG-SGH-I717 using xda premium

 

[TJBunch1228]

http://bit.ly/M53vPe

Sent from my SAMSUNG-SGH-I717 using XDA