Hey all, first post

[booger]

I have a us based blackberry on att also. its old and i dont use it so its deactivated. Do i need att to activate it first or can it be activated when i buy the sim card?

its a blackberry world phone

Your Blackberry will work fine, as long as you unlock it. You can get unlock codes for as low as $1.99 on the internet. Once you unlock it and insert the Jamaican sim card you will be good to go as long as you purchase the minutes. I used an unlocked At&T blackberry in July and it worked like a champ.