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 (0.5" ) than the LG G3's 5.5" 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).
LG G3 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.
LG G3's 534ppi pixel density is significantly higher (167ppi ) than the Nokia Lumia 1520's 367ppi pixel density.