SONY XPERIA Z5 PREMIUMAlthough Sony has launched three phones under the Xperia Z5 moniker (Xperia Z5, Z5 compact and Z5 premium), the Premium is the one that stands out.
It is the word's first smartphone with a 4K resolution display: 5.5-inches with 3840 x 2160 pixel resolution, giving it a staggering pixel density of 806ppi.
It's certified IP68 for dust and water resistance and has a stainless steel frame for durability. It comes with a new 23MP rear camera that has phase detection autofocus and 4K video recording support.
Specifications include a top-of-the-line Qualcomm Snapdragon 810 processor, 3GB RAM, 32GB storage and a 3,430mAh battery.