Screen size, resolution and quality are some of the most important features to consider when choosing a smartphone.
Huawei P30 Pro's 6.47" OLED LCD is slightly larger (0.08" ) than the Huawei Mate 20 Pro's 6.39" OLED 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).
Huawei Mate 20 Pro and Huawei P30 Pro have exactly the same display coverage of 88%- so we don't have a winner here.
Screen size is only one side of the story, resolution is as important in most cases.
Huawei Mate 20 Pro's 538ppi pixel density is significantly higher (140ppi ) than the Huawei P30 Pro's 398ppi pixel density.