[Samsung Galaxy Note 8 Questions and Answers] Kamikaze_Ice:
I changed my mind and won't make that thread. I was only going to be lazy and do a quick and dirty comparison (didn't want to rent a spectro just for my phone).

DisplayMate already did this (didn't know they covered this phone in-depth).

http://www.displaymate.com/Galaxy_Note8_ShootOut_100.htm

Summary:

Avoid Adaptive mode.

Adaptive does what it says. It adapts by making adjustments to brightness, contrast, saturation and tint based on the environmental light around you. This has a huge impact on our perception of color (see AVSForums if you want to know more).

Adaptive also boosts saturation at all levels regardless of environmental lighting. The R/G/B sliders only effect how strong this saturation boost is. No combination will ever make this mode even remotely close to being considered close enough perceptually (this is perceptual weighting is described via the JNCD rating--lower is better!).

Basic is the best choice for accurate color overall. BT.709 (movies) and sRGB (digital graphics/web graphics, etc. and are very similar to each other, which is what Basic uses.

By default the display will be set to DCI-P3 in a BT.2020 container (Adaptive/Cinema/Photo modes). Looking at BT.709/sRGB content on a BT.2020 display will not be accurate because the gamut is not only larger but rotated. If you pour a bucket (BT.2020/DCI-3P) half full of water (content like a movie) into cup (BT.709/sRGB) it obviously overflow once it's full. That's a lot of wasted water (over saturated colors).

Cinema is the the next best choice if you like the oversaturated colors from mismatched colorspaces.

Screen Modes do not apply to HDR10 content, as they have their own separate settings. DisplayMate didn't cover HDR, but I see no reason to adjust it based on a few of own measurements. This display is a hell of a lot better than my LG E6 which is has "reference" level of quality with a 3D LUT. Many movie studios use this model series for grading their movies.

The color shift you see when tilting the phone is normal. This happens to every display. This is not apparent on LCD/IPS displays because of how quickly brightness rolls off at offset angles.

The glass of the screen is the main contributor for OLEDs due to the polarizing/protective/glare reduction coatings that they use.

It's irritating but we can't really do anything about it.

To everyone who thinks Cinema/Photo/Basic look too red... this is not true.

I'm not trying to bash on any one by saying this, but because you think this is true is evidence enough that that you are used to looking at displays that are too cool (lack of red). HDTVs come from the factory like this as they will be out in the showroom floor at places like Walmart and Best Buy and usualy with a crap load of fluorescent lights which no one would have in their rooms (In short this means you will never get what you see on the floor. Some display issues can be very hard to notice or even hidden in such a viewing environment.) And how many people do you know who bother to even go into the display menu, let alone change the default thinking "it's brand new, and changing the defaults will mess it up!". Again, not trying bash anyone regarding this. Most people simply are not aware of it, or have misinformation from marketing (like the contrast ratio everywhere on the packaging...).

The phone in these three modes put out a VERY accurate D65 white which is defined in all standards used by this phone (BT.2020, DCI-P3, BT.709, sRGB and HDR10).

To be fair this white as defined therein is indeed a "Warm" light. If you want to know why D65 is used, see https://en.wikipedia.org/wiki/Standard_illuminant

Set your display to Basic and use it for a few days without changing it and then go back to what you had. I think you will be surprised at what you see.

TL;DR:

Adaptive is very innacurate, and applies a boost to saturation at all levels. Adaptive is like Dynamic Contrast, Dynamic Color and auto backlight all in one--meaning this sucks.

Use Basic if you want an ISF calibration level of accuracy.

Use Cinema if you like/want more saturated colors than Basic (way better than Adaptive).

Display modes do not effect HDR content.

No Cinema/Photo/Basic do not have a red tint. You're used to looking at something that is too cool/blue.