For those that use T-mobile in the US, texts and data are free in JA. The data is slow so you can't stream video but it is more than adequate for email and looking at news and forums. Phone calls back to the US are $0.20 per minute. When I landed in Montego Bay, I got a text welcoming me to JA. Everything else just worked. They also offer a speed upgrade to the data connection for a small charge but for just staying in touch, I did not need it.