Display:
The display is very well made and are brilliant natural colors again. 5.2 "are a good size and I think it should not be greater, as otherwise eliminates the 1 hand operation. The touch screen is very sensitive and responds well.
Camera:
The camera works as it should and you can make very good pictures with it. The Camera overheated I can not confirm at 4k shots because I have no interest. What good is it if you can not play the video accordingly. Maybe in 4-5 years let's see if the TV can play this well.
Voice quality:
Because I have the device unfortunately deduct 1 star because I often very thin arrive with the interlocutor and must speak up. Since I'm used to other quality of Sony.
Battery:
The battery lasts really long time and I do not need up to 2 days to the charger. If you naturally makes a lot, games etc. then you get there only about 1 day out with. A little tip for the charger, you buy a cable with magnetic connection. That you can then make to the side of the device and need not always be so open the door on the side.
CPU & Ram:
The quad-core 2.3GHz A market is noticeable and the 3GB of RAM are nothing to sneeze at. Everything runs very smoothly and most demanding games run great.
No Gorilla Glass:
Why Sony does not rely on the proven Gorilla Glass and rather uses its own technology, I can not quite understand. Not that I have already scratches, but the Corning Gorilla Glass is simply the market leader. Therefore, it'll probably have to set a film and a vernümftige envelope. I am thinking, in "normal" use, nothing should happen.
Waterproof:
The have and I will not try. Although I have read in various tests that the Z2 has survived 1.5m under water for 30min, but I do not necessarily imitate. Which has been tested only in fresh water and salt water can attack the device yet.
Optical:
Looks very classy and the Z2 also acts as if you hold it in your hand. The only thing I find not so great, this is the reverse side provided with glass. Since it would have been better to take aluminum, because that has determined better heat dissipation than the glass.
All in all I can only recommend Xperia Z2, even compared to the more expensive 150 Z3, which has no significant improvements to the Z2 and has a shorter battery life.
Price / performance TOP !!