Display:
+ The mobile phone has a very nice sharp display (from every angle)
- However, if there is sufficient sun outdoors unfortunately somewhat useless
- Automatic screen brightness (hence the sensor) function weak
Performance:
+ Hardware is really good everything works fluently, games like Clash of Clans etc function properly
+/- Browser experience was good. Sometimes long load on larger sites
- Keyboard input very very slow. Quick Schreiber should change your mind, with fast typing missing letters
Battery:
-Grottig Absolutely grottig. Standby time of 40h. After not even half a day I sucked as intensive smartphone users (Whatsapp, Twitter, snapchat, Facebook) the entire battery. Unacceptable. Display time (has in the display on until the battery reaches time 1%) were just 2 hours. My Sony Xperia Z creates hours loose even 5 1/2.
All in all, the battery is a very very bad point for me and a KO criterion!