Sony’s new Xperia Z5 Premium features a 4K 5.5′ display which works out to 806PPI (which is double of the iPhone 6 Plus’s 401PPI). It also features a Snapdragon 810 processor, 32 GB of storage, 3 GB of ram and a nicely sized 3430 mAH battery.
The relevant questions are is this much resolution noticeable and of benefit on such a small screen and how much will it effect battery life? These questions will remain hotly debated until it gets into enough reviewer’s hands.