Screen size, resolution and quality are some of the most important features to consider when choosing a smartphone.
Nokia Lumia 1520's 6" IPS LCD is slightly larger (0.3" ) than the Microsoft Lumia 950 XL's 5.7" AMOLED 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).
Microsoft Lumia 950 XL LCD covers 80% of its surface which is only slightly higher then Nokia Lumia 1520's 70%.
Screen size is only one side of the story, resolution is as important in most cases.
Microsoft Lumia 950 XL's 515ppi pixel density is significantly higher (148ppi ) than the Nokia Lumia 1520's 367ppi pixel density.