What happen with your Z1? mannaia lu purcu...
First of all let me clarify that I liked the Z1 , but I had the Galaxy S4, exynos version, and have had several problems, so I switch to the Lumia 920, which I hated and now I'm with the Z1. Despite the Z1 is an incredibly fast, fluid and with a great battery smartphone, it has several bugs, for example: faulty microphone, mainly recording on whatsapp, touchscreen has problems almost always, the sound is too low, the camera does not is there all this, expecting more, the screen is a real crap, whitish, very bad at any angle, battery charging is slow, when closing the walkman in the list of recent apps the music stops, or when I pause in the notifications, the notification disappears and no longer appears to play again. Without mention, I miss features of the S4, as all those camera functions, ESPECIALLY the multi-window, better utilization by the edge of the screen, much improvements in the software by Samsung, and also from all sensors. Today I regret having sold the Galaxy S4 and if I could, will be with Note 3. The problem is that I live in Brazil, and here is not easy to switch smartphones due to the extortionate prices.. Sorry bad english, and hope u understand...