I checked out this thing with my friend's unit. 4k Screen is UNNECESSARY - there is no visible difference between FHD to 4K content at all! 4K pixels are just sucking battery, and the 60H+ endurance test just confirms this as having average battery stamina.
I don't understand with all this fad of making thinner phones that have obviously not enough to hold power for all the functions and continuous internet connectivity that we do. Manufacturers should consider doing OPTIONS of 7000mAh or so capacity devices. They will be thick, but they sure will beat having you plugging in in the middle of the day, or forces you to bring a powerbank all the time.
If you like it or not is the first smart phone with 4K display after all the big names in the smart phone market. Bravo to Sony you cause alot of research in the minds of big companies in this phone industry to challenge the world of 4K technology. Hopeful Samsung will come out with SUHD display in next Samsung galaxy edge.