If you have an older cell phone kicking around, have it unblocked and buy a sim card and minutes down there. We had an older IPhone 3 unblocked. We paid $13.00 for 1000 international minutes and 30 local minutes. We'll take that phone down with us ever year now and buy minutes when we get there. When we got home we used the rest of the minutes up texting friends we met on our trip.