Sony launch Xperia Z5 Premium; the worlds first 4K smartphone.. <br /> <br />Sony launches the first 4K smartphone: Xperia Z5 Premium boasts 23MP camera with autofocus that's faster than the blink of an EYE <br /> <br /> Sony has unveiled the first 4K smartphone, the Xperia Z5 Premium <br /> The firm also launched a waterproof Xperia Z5 and Xperia Z5 Compact <br /> 23MP camera with interchangeable lenses has fastest autofocus on market <br /> The handsets additionally have fingerprint sensors built-in, like the iPhone <br />Sony has unveiled three new handsets - including what it claims is the first 4K smartphone - at the Internationale Funkausstellung (IFA) consumer technology fair in Berlin. <br /> <br />The key development in all the handsets, named the Xperia Z5, Z5 Compact and 4K Xperia Z5 Premium, is the camera. <br /> <br />Each of the Android 5.1 Lollipop handsets boast a staggering 23MP sensor with super-fast focus technology, and they each support an interchangeable lens system.
