Hello. My mom and her best friend go to mazatlan every year for 2 weeks. Last year, her bestfriend "Lory" was told one thing by her cell phone company, and ended up getting charged hundreds of $, that she is fighting them on. I personally would go to a internet/phone cafe to call home. You pay when you are done with the call. This summer I used the phone cafe to stay in touch, when we were in the Galapagos Islands and Peru, the connection was great. With a phone card, you might end up paying for more minutes than you really need. Hope this helps.