The Sony Xperia Z5 Premium is the world's first smartphone with a 4K display. As its name implies it is also boasts of the most high-end spec sheets of any smartphone in the market today. Apart from its glorious 5.5-inch 4K display, we also love the fact that it has front facing speakers, a fingerprint scanner built into its power button, has provisions for an optional micro SD card slot, and is waterproof!
Editor's Note: We unboxed a demo unit from Sony. Most likely the retail version will include headphones.