As you may have gathered from our review of Samsung’s Galaxy S10, it’s a very solid phone with lots of advanced features. But one thing that’s especially difficult to test is the absolute quality of the display — which is why we leave that part to the experts. And this expert says the S10’s screen is the best ever on a smartphone.

Ray Soneira has tested every major phone, tablet and laptop series for many a year, using all the cool color calibration, reflectance and brightness measurement and other gear that goes with the job. So when he says the S10’s display is “absolutely stunning and Beautiful,” with a capital B at that, it’s worth taking note.

OLED technology has advanced a great deal since the first one I encountered, on the Zune HD — which still works and looks great, by the way, thank you. But originally it had quite a few trade-offs compared with LCD panels, such as weird color casts or pixel layout issues. Samsung has progressed well beyond that and OLED has come into its own with a vengeance. As Ray puts it:

The Absolute Color Accuracy on the Galaxy S10 is the Most Color Accurate Display we have ever measured. It is Visually Indistinguishable From Perfect, and almost certainly considerably better than your existing Smartphone, living room HDTV, Tablet, Laptop, and computer monitor, as demonstrated in our extensive Absolute Color Accuracy Lab Measurements. The very challenging set of DisplayMate Test and Calibration Photos that we use to evaluate picture quality looked absolutely stunning and Beautiful, even to my experienced hyper-critical eyes.

Make sure you switch the phone’s display to “natural mode,” which makes subtle changes to the color space depending on the content and ambient light.

And although he has enthused many times before about the quality of various displays and the advances they made over their predecessors, the above is certainly very different language from, for example, how he described the reigning champ until today — the iPhone X:

Apple has produced an impressive Smartphone display with excellent performance and accuracy, which we cover in extensive detail below. What makes the iPhone X the Best Smartphone Display is the impressive Precision Display Calibration Apple developed, which transforms the OLED hardware into a superbly accurate, high performance, and gorgeous display, with close to Text Book Perfect Calibration and Performance!!

High praise, but not quite falling all over himself, as he did with the S10. As you can see, I rate smartphone displays chiefly by the emotional response they evoke from Ray Soneira.

At this point, naturally, the gains from improving displays are fairly few, because, to be honest, not many people care or can even tell today’s flagship displays apart. But little touches like front and back sensors for ambient light detection, automatic calibration and brightness that take user preferences into account — these also improve the experience, and phone makers have been adding them at a good clip, as well.

No matter which flagship phone you buy today, it’s going to have a fantastic camera and screen — but if you like to see it all in black and white, read through the review and you’ll find your hopes justified.