Does unlocked Blackberry Bold 9000 work like locked one?

So I'm thinking of unlocking my att phone so that I could use it in a different country with a local sim card. I've heard that unlocking your bold will cause the 3g to not work.

Situation: I unlock my bold, travel to some country, then return to america, put in my usual att 3g sim card.... will 3g work on the phone?

There is nothing like 3G wont work in an unlocked Blackberry phone. These problems may occur if the unlocking process is not a safe one. If you unlock your Blackberry Bold 9000 safer using unlock code, you wont be having any problem. You can get the unique unlock code for your Blackberry Bold 9000 from UnBBLock.com at affordable cost with an easy unlocking guide.