A little over ten months ago, Samsung revealed the Galaxy S III to the world, and in the months that followed we saw the smartphone spread to carriers across the globe and become a sales juggernaut. Samsung's hoping to catch that lightning again, and today it ushered in the era of its next Android flagship, announcing the Galaxy S IV at its Unpacked event at New York's Radio City Music Hall, with one of the biggest presentations we've ever seen.

Samsung's JK Shin started things off by describing some of the GS4′s key features: Dual Camera, Sound & Shot, Smart Scroll, Smart Pause, Air View, Group Play, Samsung Knox, and Samsung HomeSync. The GS4 is being positioned as a "life companion." less