Surprising a few of us, Nokia yesterday revealed a brand new Windows Phone 8 device, the 3.8-inch Lumia 620, in an explosion of colors. As its naming convention goes, and at just $249 contract-free, this is the cheapest device running Microsoft's newly christened mobile OS so far. But with a WVGA screen, and only a 5-megapixel camera, is there enough bang for your buck, however? We'd argue yes -- and we're looking for
