The world's fastest-selling Android phone just got a little savvier. CNET How To is bringing its very best, unpublished advice to our newest e-book, "Mastering the Galaxy S4."
New to Android? We've got you. Google maven? You'll find plenty of hidden tips here, too. We've tapped through every last feature, button, sensor, shortcut, and blaster (seriously) to bring you the tips and tricks that help you master your S4.