The Galaxy S20 Ultra features a 40 MP sensor as its selfie camera. Bigger is supposedly better and one would expect it to be the best on the market, yes? Well, no. The S20 Ultra only finishes joint second on DxOMark's selfie chart, and more interestingly, with just one more point than the Galaxy Note 10+ 5G and its meager 10 MP sensor.
https://www.notebookcheck.net/Galaxy-S20-Ultra-DxOMark-s-review-of-the-flagship-s-40-MP-selfie-camera-further-places-the-effectiveness-of-high-res-quad-bayer-sensors-in-doubt.464142.0.html