BARCELONA, Spain — John Chen was at a recent charity event when an announcer unexpectedly …

Thanks to Mobile World Congress, the Galaxy S5 cat is out of the bag. How does it stack up to flagship rivals like the iPhone 5S and the LG G Pro 2? The copper Galaxy S5 taken with the S5’s own camera. (Credit: Jessica Dolcourt/CNET) On the surface, Samsung’s Galaxy S5 looks a hell of a lot like it’s predecessor. …

Like at any technology show, the biggest product releases of Mobile World Congress dropped in the first couple of days. But the latter days of an event remain just as interesting. You actually have time (well, a few minutes anyway) to roam the show floor to find hidden gems and underdog products, and you can dig up a few juicy …