Sony launch Xperia Z5 Premium; the worlds first 4K smartphone..

Sony launches the first 4K smartphone: Xperia Z5 Premium boasts 23MP camera with autofocus that's faster than the blink of an EYE

Sony has unveiled the first 4K smartphone, the Xperia Z5 Premium
The firm also launched a waterproof Xperia Z5 and Xperia Z5 Compact
23MP camera with interchangeable lenses has fastest autofocus on market
The handsets additionally have fingerprint sensors built-in, like the iPhone
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.

The key development in all the handsets, named the Xperia Z5, Z5 Compact and 4K Xperia Z5 Premium, is the camera.

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.