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"With a 6.4-inch full HD display, Sony&amp;#039;s new Xperia Z Ultra really is about as big as it gets when it comes to smartphones. Designed to take on the likes of Samsung&amp;#039;s Galaxy Note range of smartphones, which also feature huge screens, it boasts the latest in smartphone technology.  Inside is a 2.2 GHz quad-core Snapdragon 800 processor, which is about as fast as you can get right now when it comes to smartphone hardware.  The 800 series of Snapdragon chips hasn&amp;#039;t really arrived properly yet, with very few phones using it. Capable of recording and decoding 4K video, it is a very powerful chipset. As such, the Xperia Z Ultra feels incredibly snappy and fast in use. This is the quickest Android smartphone we have used to date, and it&amp;#039;s certainly impressive to see just how quick apps load and games run. 4G capabilities are also included with the phone, so it&amp;#039;s future proofed for the UK&amp;#039;s imminent network-wide 4G rollout.  Sony has also implemented the same water-resistance and dust-resistance tech found in the rest of its smartphone range. An IP55/58 rating for the Xperia Z Ultra means you can happily dunk it in water or take it to the beach. Just like the Samsung Galaxy Note phones, the Xperia Z Ultra can work with a stylus. The difference here is that anything can function as a stylus, be it a normal pencil or pen. The real talking point, however, is that huge 6.4-inch Full HD Triluminos display which uses Sony&amp;#039;s X-Reality image processing tech. Jargon aside, it translates to one of the best-looking smartphone screens we have ever seen.  The rest of the Xperia Z range was marred slightly by poor viewing angles and a lack of colour saturation. Things are very different here. The Xperia Z Ultra is vivid, sharp and bright. Sony&amp;#039;s battery stamina mode is also included with the phone. Having spent a long time using the Xperia Z, we know what a difference it can make to the smartphone&amp;#039;s battery life. The stamina mode switches off unused functions when you lock the phone, in turn saving a significant amount of power. This should help negate the extra power drain from the huge screen on the Xperia Z Ultra. We will say that the Xperia Z Ultra we tested was a prototype unit and as such, we aren&amp;#039;t ready to give our full verdict on it yet. The device is however due to turn up at the Digital Spy offices very soon, so expect a full review in no time. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tech/hands-on/news/a503162/sony-xperia-z-ultra-hands-on-video-review-of-new-smartphone/>