You can purchase an unlock code for your current phone for $1.99 on ebay. If you have a newer phone thru T Mobile or AT&T it should work. I did it with a blackberry and it worked. I believe I paid around $7 for a local sim card in Jamaica and than you can buy some minutes for around $10 which should last you the entire trip if you keep the conversations on the lighter side. So for around $20 you are good to go.