Samsung releases Galaxy S and Galaxy Note flagships roughly six months apart, and LG’s been doing something similar with the G series and the V series. Sony Xperia XZ1 mobile was launched in August ...

The power button protrudes out and was first seen in the Sony Xperia Z, although it's much smaller this time ... a resolution of 540x960 pixels at a pixel density of 220 pixels per inch (ppi). Sony ...