My investment idea today is a Mexican telecom company that’s turning into a regionally dominant provider of voice and data network services. Founded in 2000, American Movil (AMX) provides both wireless and fixed-line communications, but it’s clearly the buildout of the wireless network that’s stirring things up. The company offers the whole spectrum of cellular services, such as short messaging, content downloading, video streaming, GPS and Internet access in addition to standard fixed-line services like Internet, cable TV and data transmission. With more than 180 million wireless subscribers and nearly four million fixed-line subscribers, America Movil has a presence...