[texdoctor]

now the cheapest way is to use data service on a cell phone from mexico on telcel 3gb for 30 days is 500 pesos about 40 bucks, using same chip local calls are not cheap on chips. 5 pesos a min with two mins charges that is like 85 cents per phone call. now if you age just going to the border area. you can put border plan for 5 bucks get unlimited calls to land lines and 18 cents a min to all others. I do not know if you have to live on the border to get this service. but well worth it