As exciting as the 8X and Lumia 920 are, no phone lineup -- especially not one launching a new OS -- is complete without a midrange competitor. Nokia has answered that call with the Lumia 820, a modestly specced and marketing gimmick free Windows Phone 8 device that's ready to combine all the advantages of Microsoft's latest mobile platform and AT&T's growing LTE footprint with an easy to swallow price point. Or, at least so we assume. Price is still up in the air on this glossy polycarbonate device, but we can