Q: I have a sprint blackberry
A: That depends on what plan you have. If you have an international plan, it should work fine, but if it's local or national, the roaming charges could be so high you'd be better off turning off your phone until you go home. If you don't have an international plan and it's important to you to have service, you might want to contact Sprint and see if you can switch to an international plan for one month, then switch back to your regular plan.