How can I use a T-Mobile SIM card in my AT&T Blackberry Pearl 8110?

[Christopher]

I think that I need to unlock it, is it likely that I can get that code for free? Or is there another way?

 

[Unregistered]

Yes you are correct.If you want to use AT&T Blackberry Pearl 8100 with T-Mobile sim card,you need to unlock it from service provider lock.But free unlock code is not possible to get for this model.You need to pay to get code.Visit the site Unbblock.com get unlock code and unlock from service provider lock easily.