the display has returned to full HD on what is personally more than auusreichend for me and is compared with the Z1 has become much more stable viewing angles. Otherwise, I can only say, brightness, contrast, saturation, sharpness act properly.
The faster processor now also works very fast, no stuttering or other apps come to stutter, as well as the non predecessor. Also, the Z2 not great warm when you gambles so mal ne round or elaborate games played.
front on the sides are now the speakers housed, which is clearly the advantage and there is nothing more obscured with the hands. The sound of it is also very good, clear and not distorted.
The camera fires again to 20MP and makes even better thanks to aperture (f / 2.0) in a dark place some better pictures than its predecessor. also 4k video, you can record it, but eat a lot of memory. the videos look very nice sharp, colorfast and act thanks to stabilization beautifully smooth and soft for small pans. ;)
The music player sounds excellent, as already during z, z 1 and gives the music really excellent and crystal clear again.
bass and midrange and the highs are very balanced and very well coordinated.
Even when calling the interlocutors are without noise, hum, distortion properly heard and at a pleasant volume.
The reception has my meinng after again much improved compared with the Z1. even in the subway and in rural areas outside the city (in my Berlin), the bar always be set to maximum (T-Mobile).
Otherwise you are surfing through the net thanks to LTE very nimble and sides are constructed Ruck Zuck.
The battery is super and has brightness with me from morning 6:00 at half, hear 20-30 WhatsApp messages Gmail to auto sync, an hour of music, reading newspapers / the Internet from time to surf, 2-3 youtube videos look. .. in the evening
still more than 50% battery! (And stamina mode was not active.)
So in addition to the HTC One M8, Galaxy S5 Sony is a very good compromise from all sectors.
Very good workmanship, battery top, display top, top sound, camera very good and there is also dust and waterproof! :)