In the US, the tech events that typically get the most attention are CES , Samsung Unpacked , Google I O and pretty much any time Apple puts on a show. But there's also a major gathering in Barcelona each year that doesn't draw as many eyes on this side of the Atlantic, despite attracting more than 100,000 people over four days. It's Mobile World Congress MWC, and it kicks off this week. MWC is all about the telecommunications industry, which might sound dry if you don't...
