Your cell phones will work, depending on your carrier. We have sprint and use to go home to bills of $700 or more, even when putting international on our lines. Your phones should work, but make sure you get the international on your phone so it will take it down to a lower price per minute. If your phone has a sim card, you can buy a sim card here on the island to get a Belizean number and then buy prepaid cards to add minutes to your phone. Other option is to buy a cheap phone here and add minutes as needed. If you have wi-fi where you are staying, make sure the wi-fi is turned on and the data is turned off. If your data is turned on, then depending on your carrier, you will be charged for data coming in (emails, etc). Texting is a great option, it's cheap. About 50 cents outgoing and .05 incoming.