How to call mexico from at&t cell phone?

I have an AT&T US cell phone and am trying to call or text a Mexican cell phone (carrier unknown). What are the The rule for calling Mexican cell phone numbers from abroad is adding digit 1 before the area code. 52 is Mexico's country code and 011 is the code used to call internationally from the US. read more

Complete resource on how to call Mexico: country code, area codes and more international calling info read more

Calls to U.S. (domestic coverage area) numbers will not incur additional charges (excluding calls to 411 and other premium numbers) and will not impact voice airtime usage. Wi-Fi Calling to international numbers, including calls to numbers in the country where you are located, incur International Long Distance (ILD) charges based on your rate plan or ILD package. read more

If you are calling within Mexico, you must use the trunk code to make calls. The trunk code is the first number and it comes before the area code. Your phone call will not go through unless you remove this number when calling from the US. read more