There may be others who are better experts than I but it seems to me that you could buy a Digicel SIM card & use it there. No reason to get an AT&T SIM card. Not sure of the Digicel SIM card cost since I keep my phone active but probably around $600J. The Digicel store in town would be the best place to go (across from ValueMaster in the newer plaza). Buy credit to put on the phone to use there. Very inexpensive. All I can think of now.