I've had a family plan with AT&T for about 15 years. I am getting ready to move to Guatemala to teach for about 9-14 months (possibly longer if I love it ) My question is, do you recommend that I keep my current AT&T service and strictly use FaceTime/Viber/WhatsApp/Facebook and other Wifi apps to keep in touch? OR should I cancel my AT&T contract, unlock my iPhone5, and get a local service provider over there? I will be in an area that there are many wifi hotspots, but clearly not if I go hiking, to the beach etc. Does anyone have personal experience with anything similar? All opinions and suggestions are welcome!! Thanks!