Motorola i1 -- Sprint/Nextel's push-to-talk Android phone

For a few years in America, it was tough to go a day in public without hearing a distinctive electronic “chirp.” By 2004, that bird-like walkie talkie had helped Nextel amass nearly 20 million customers with some of the highest loyalty – and highest revenues – in the industry. But less than two years later, the storied Nextel brand would crumble into a punchline, following a merger so devastating it almost sank the company that bought it. Find out what caused one of the most valuable brands in w