Torture Sony Xperia Z Ultra screen with knives, coins and pens
Xperia Ultra Z is run Android OS smartphone with high-end of Sony up to 6.44 inch screen.
Besides Triluminous technology improves the image quality Xperia Z Ultra also integrates advanced touch functionality allows users to take advantage of the surrounding objects such as pencil, pen often used as a stylus accessories for the action that needs high accuracy. The video shows the screen of the phone screen "crisis" better interact with the items mentioned above. Experiment with a good knife but no one is unwise to use a knife to make the stylus on the Xperia Z Ultra though the phone screen can not be scratched by a knife. Here is the actual video using the Xperia Ultra with Zcoins, pens and knives.
Video actually used the Xperia Z Ultra coins, pens and knives.