Yes, we know Android is holding steady at about 52 percent of US smartphone market share. What's interesting is just who's driving growth as a whole. According to Nielsen, 58 percent of American teens between 13 and 17 now have a smartphone -- that's a big jump from 36 percent a year earlier and a sign that the youngest owners have a significant sway over where the market is going. Not that young adults don't have an impact. Although the 25-to-34
