AT&T has changed some of their international calling plans. Before you go to Jamaica, call AT&T and ask for the $10/day international day rate for Jamaica. They will have you give them the start and end date of the plan. You are charged $10/day while you are there. Also, if there is a day you will not be using the phone, turn off your cellular data before 11:59 PM the night before. You will not be charged for that day.