oh thank you brigette. Could Natalee have had someone else's cell phone with her?
They do have rental cellphones on the island, but I understand that most US cellphones will not work on the island, so many people rent them and I have not heard that she rented one or had someone elses cell with her.
Some phones can be reprogrammed for international use, it all depends of the cell company. When I go to St. Louis I have to change my calling zone. I have 3 zones on my phone that I can use.