Sony Xperia Z5 Premium only does 4K when you ‘need’ it
 

The Japanese device manufacturer is doing everything humanly possible to balance out cell endurance and top-notch display performance, but it may well end up enraging a fair share of power users. 4K resolution on a 5.5-inch handheld. Worthless, absurd gimmick, or welcome evolution of a rapidly progressing mobile environment? The verdict isn’t in yet, even...

http://vr-zone.com/articles/sony-xpe...ery/99098.html