Google Pixel 3 XL teardown confirms Samsung AMOLED display
https://www.cnet.com/news/google-pixel-3-xl-teardown-confirms-samsung-amoled-display/
That helps explain the PIxel 3 and Pixel 3 XL's great results for color gamut, accuracy and more in DisplayMate's latest phone display tests.
A couple other notable takeaways from the teardown: The Pixel 3 has a lot more adhesive than the Pixel 2 models, much like the Galaxy S9 Plus, making it harder to repair. It's easy to remove the battery but more difficult to get to other parts which frequently need attention. And the full-size glass back makes it more likely to crack if dropped.