Introducing the Sony XZ Premium, the world's first smartphone to feature 4K HDR Display. Watch 4K HDR content that's clear and lifelike on the XZ Premium's 5.5" 4K HDR screen. The Xperia XZ Premium is the first smartphone to feature 960fps slow mo video. This means you can capture the action 32x slower than standard video. Xperia XZ Premium's 19MP Motion Eye Camera technology captures 4 photos from before you press the shutter, to ensure you capture those unexpected moments.