Google's third-generation Nexus phone may have been spotted for the first time in a sighting late Friday. The device, called just the Nexus 3 for sake of reference, was clearly designed by HTC with its signature curves and top grille. More crucially, the "Android Dev labs" source showed a photo of a device that would scrap all front buttons in favor of nothing but touch, hinting that it would be the reference phone for Ice Cream Sandwich and its tablet-like interface.