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 (0.8" ) than the Microsoft Lumia 950's 5.2" 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 and Nokia Lumia 1520 have exactly the same display coverage of 70%- so we don't have a winner here.
Screen size is only one side of the story, resolution is as important in most cases.
Microsoft Lumia 950's 565ppi pixel density is significantly higher (198ppi ) than the Nokia Lumia 1520's 367ppi pixel density.