Unlock iPhone for Tmobile USA

[blaklaybul]

First: What is the best way to unlock the iphone for Tmobile?

Second: Do you lose any functionality if you unlock it? Will I be able to get firmware updates / download applications, use the browser... etc?

Will it be any different than if I have a ATT iphone?

 

[hypmatize]

Read this thread https://forums.macrumors.com/threads/457556/ it will give you most if not all the info you are looking for.