From what little I know and have come to understand of things technical, the cel phones need to get or receive a signal from a tower. The tower on Ambergris Caye is down. The ones getting through, have to be in a very high location with clear access to Belize City so that they can get the signal or whatever, from the tower that's still standing in Belize City. PLUS...you need to have a charged battery. There is no electricity on the island. Double trouble.