Everyone who regularly deals with cold winters knows the pain of using a smartphone in January -- you're usually forced to take your gloves off and risk frostbite if that call just can't wait. Nokia's new Lumia 820 and Lumia 920 phones bring in a Synaptics ClearPad Series 3 sensor whose responsiveness will keep those hands toasty. Super Sensitive Touch, as Nokia calls it, lets the capacitive surface
