Ratty2141,

Most everyone I communicate with in Negril has the APP WhatsApp and that is how I call or text them when in Negril.
I have Verizon Wireless and they offer a weekly and monthly unlimited INTERNATIONAL Plan.
The monthly plan is $100 US, I don't know the cost for the weekly plan.
My employer pays for the monthly plan on every trip, so that I'm always available no matter what.

Before cell phones we used the Coconut Telegraph and from my recent experience it still works just fine!!!

Enjoy,

VVHT