Quote Originally Posted by Unlockmybberry View Post
Unlocking allows you to use any other carriers simcard on your phone. It does not provide free internet access or free usage of their towers.

I know on the 9000 Bold with OS 5.0 it gives you the option to use either 2G or 3G.
This is true but not all carriers allow you to roam even voice calls on their system with out charges, that would be something you wouild want to check first