I bought a new Z3 and it worked OK. Since I updated OS to 6.0 I found the problem with battery. 1. It started to drain in 1 hour. New battery!!! With previous OS it worked 2 days. So I switched off GPS, data, LTE, WiFi, but the situation is the same... 2. Battery calibration - fully charged phone showed 10%, reset - 100%, Reset -10% 3. Problem with charging - docstation/USB (the same) start/stop randomly. Durring random start/stop charging battery is shortened with internal path (battery management) and discharged immidiatelly and getting extremely hot! It seems to be in 6.0 was implimented a bug which affects on battery management which KILLS YOUR BATTERY VERY FAST. It´s not an application, it´s battery management whigh discharge it in 1-10min shortening the battery. It means that SONY in this way motivates consumers to through out a good device (making thinging that battery is worn out and finally killing it) and buy a new model. It´s the mass problem (many discussions on internet for few years about old Xperia Z...) ... The solution is only to move old OS back.
... View more