What data plans are available for iPhones in Mexico?

Question

For those living in or visiting Mexico with unlocked (non-AT&T) iPhones what does data cost? What plans / packages are available? Is there an unlimited option like in the US?

Answer 1

http://www.movistar.com.mx/

http://www.telcel.com.mx/

I paid almost MXN$1,350 (which is about $120 American) for both data and voice.  Movistar did not offer unlimited data as of three months ago when I stayed in Tijuana, B.C.

iPhones use GSM and so does Movistar and Telcel.  Movistar was a little more than Telcel but Telcel did not work that well in my area.  Telcel charges MXN$579 for unlimited data (that's about US$50).  I checked the web.