I understand your concern about being able to use your device while traveling abroad. Currently, I am not showing Treasure Cay, The Bahamas to be covered under either Global Phone or International usage area. Here is a link to information on both of those international features for additional clarification:
Hi ... How can I unlock a BB8830 for use in another country. I want just get the SIM card for i.e. Jamaica insert and use. Just bought the phone off Ebay. Rooming kills me when I use my regular phone.