https://wccftech.com/displaymate-awards-pixel-4s-screen-the-highest-ever-a-grade/

When it comes to smartphone displays, the top two contenders are almost always Samsung and Apple. Pixels have always been somewhat lackluster, and the Pixel 2 XL got a lot of flak for its LG POLED panel. Its successor—the Pixel 3XL—fared much better owing to its Samsung panel. This year's Pixel 4 XL appears to have gotten a whole lot better, according to DisplayMate. It describes the Pixel 4's screen as visually indistinguishable from perfect. In their comprehensive analysis, they measure, analyze, and evaluate in-depth the display on the Pixel 4 XL.

The Pixel 4 XL supports two Color Gamuts, sRGB, and DCI-P3. The measured Color Gamuts for the Google Pixel 4 XL along with the Standard sRGB / Rec.709 and DCI-P3 Color Gamuts show that at 500 lux (average indoor lighting conditions), the on-screen Color Gamut is reduced to 90%. At 1,000 lux (very bright indoor lighting), the on-screen Color Gamut has fallen to 80%, and at 2,000 lux (bright sunlight), the on-screen Color Gamut has fallen to 64-65%.