Screen size, resolution and quality are some of the most important features to consider when choosing a smartphone.
Sony Xperia XZ Premium Dual's 5.5" IPS screen is significantly larger (0.9" ) than the Sony Xperia XZ1 Compact's 4.6" IPS screen.
Besides comparing the LCD sizes, another specs that we find useful to compare is the ratio of screen area to total surface area of the phone (screen area/total surface area).
Sony Xperia XZ Premium Dual LCD covers 69.65% of its surface which is only slightly higher then Sony Xperia XZ1 Compact's 58.47%.
Screen size is only one side of the story, resolution is as important in most cases.
Sony Xperia XZ Premium Dual's 801ppi pixel density is significantly higher (482ppi ) than the Sony Xperia XZ1 Compact's 319ppi pixel density.