Mexico's Televisa (NYSE:TV) will buy a 50% stake in mobile carrier Iusacell for $1.6B, a source...

Mexico's Televisa (NYSE:TV) will buy a 50% stake in mobile carrier Iusacell for $1.6B, a source says. The purchase is the latest move in a battle over the country's $35B-a-year telecom and TV-broadcast market.