Moving past the design the next point of interest is going to be the display which is one of the major elements of any smartphone, and pretty much the first thing you’re going to notice when you power on the phone. It’s easy to look at a display and provide some fluff about how the colors pop and how the high contrast leads to dark, inky blacks, but to rely solely on subjective observation really fails to capture the full extent of what a display is really like. If you put two displays side by side, you can tell that one is more visible outdoors, but there’s no way of distinguishing whether this is the case because of differences in display reflectance or display luminance. Other factors like gamut and gamma can also affect perceived visibility which is the basis for technologies like Apical’s Assertive Display system.

In order to try and separate out these various effects and reduce the need for relative testing we can use testing equipment that allows for absolute values which allow us to draw various conclusions about the ability of a display to perform to a certain specification. While in some cases more is generally speaking better, there are some cases where this isn’t necessarily true. An example of this is gamut and gamma. Although from an engineering perspective the ability to display extremely wide color gamuts is a good thing, we’re faced with the issue of standards compliance. For the most part we aren’t creating content that is solely for our own consumption, so a display needs to accurately reproduce content as the content creator intended. On the content creation side, it’s hard to know how to edit a photo to be shared if you don’t know how it will actually look on other people’s hardware. This can lead to monetary costs as well if you print photos from your phone that look nothing like the on-device preview.

To test all relevant aspects of a mobile display, our current workflow uses X-Rite’s i1Display Pro for cases where contrast and luminance accuracy is important, and the i1Pro2 spectrophotometer for cases where color accuracy is the main metric of interest. In order to put this hardware to use we use SpectraCal/Portrait Display’s CalMAN 5 Ultimate for its highly customizable UI and powerful workflow.

Before we get into the results though I want to discuss a few choice aspects of the Galaxy Note7’s display. At a high level this is a 5.7 inch 1440p Super AMOLED display that is made by Samsung with a PenTile subpixel matrix that uses two subpixels per logical pixel in a diamond arrangement. The display driver supports panel self-refresh as a MIPI DSI command panel rather than a video panel. In the Snapdragon 820 variant of this device it looks like there isn’t a dynamic FPS system and a two lane system is used so the display is rendered in halves. The panel identifies itself as S6E3HA5_AMB567MK01 which I’ve never actually seen anywhere else, but if we take the leap of guessing that the first half is the DDIC this uses a slightly newer revision of DDIC than the S6E3HA3 used in the Galaxy S7. I’m guessing this allows for the HDR mode that Samsung is advertising, but the panel is likely to be fairly comparable to the Galaxy Note5 given that the Galaxy S7 panel is fairly comparable to what we saw in the Galaxy S6.

Display - Max Brightness

Display - Max Brightness (Boost)

Looking at the brightness of the display, it’s pretty evident that the Galaxy Note7 is a bright panel, especially when compared to things like the HTC 10 and LG G5. The G5 does reach “800 nits” with its auto brightness boost, but the true steady state is nowhere near that point while the Galaxy Note7’s display can actually stay at its boost brightness for a reasonable amount of time and I’ve never really noticed a case where the boost brightness couldn’t be sustained if the environment dictated it.

Before we get into the calibration of the display it’s probably also worth discussing the viewing angles. As you might have guessed, the nature of PenTile and AMOLED have noticeable effects on viewing angles, but in different ways. As AMOLED places light emitters closer to the surface of the glass and doesn’t have a liquid crystal array to affect light emission, contrast and luminance are maintained significantly better than a traditional LCD. However, due to the use of PenTile it is still very obvious that there is a lot of color shifting as viewing angles vary. There are still some interference effects when you vary viewing angles as well. In this regard, LCDs seen in phones like the iPhone 6s are still better here. You could argue that one is more important than the other so I’d call this a wash, but AMOLED could stand to improve here.

SpectraCal CalMAN

Display - White Point

Display - Grayscale Accuracy

Moving on to grayscale and other parts of the display calibration testing it’s worth mentioning that all of these tests are done in Basic mode which is something I would suggest using in these AMOLED devices in order to improve both calibration accuracy and battery life as brightness is generally controlled by PWM while hue is controlled by voltage, so constraining the gamut actually reduces power draw of the display. Putting this comment aside, the grayscale calibration is really absurdly good here. Samsung could afford to slightly increase the target gamma from 2.1 to 2.2 but the difference is basically indistinguishable even if you had a perfectly calibrated monitor to compare to the Note7 we were sampled. Color temperature here is also neutral with none of the green push that often plagues Samsung AMOLEDs. There’s basically no room to discuss for improvement here because the calibration is going to be almost impossible to distinguish from perfect.

SpectraCal CalMAN

Display - Saturation Accuracy

In the saturations test again Samsung has basically nailed the sRGB gamut here to the extent that it’s going to be basically impossible to distinguish it from a reference monitor. I really have nothing else to say here because Samsung has no room to improve here. Of course, saturation sweeps are just one part of the whole story, so we can look at the GMB ColorChecker to see how well the Note7’s display can reproduce common hues.

SpectraCal CalMAN

Display - GretagMacbeth ColorChecker Accuracy

In the Gretag MacBeth ColorChecker test a number of common tones including skin, sky, and foliage are represented as well as other common colors. Again, Samsung is basically perfect here. They might need to push up the saturation of reds slightly higher but it’s basically impossible to tell this apart from a reference monitor. If you want to use your phone for photo editing, online shopping, watching videos, sharing photos, or pretty much anything where images are reproduced on more than one device, the Galaxy Note7 is going to be a great display. It may not be much of a step up from the Galaxy Note5, but at this point the only avenues that Samsung really needs to improve on is the maximum brightness at realistic APLs above 50% and power efficiency. It would also be good to see wider color gamuts in general, but I suspect the value of such things is going to continue to be limited until Google and Microsoft actually make a serious effort at building color management into the OS. It might also make sense to try and improve color stability with changes in viewing angle, but I suspect that AMOLED faces greater constraints here relative to LCD due to the need to improve the aging characteristics of the display. Regardless, it’s truly amazing just how well Samsung can execute when they make something a priority.

Introduction and Design Battery Life and Charge Time
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  • HideOut - Tuesday, August 16, 2016 - link

    "You also get an extra 32 GB of storage which does justify the extra 100 USD that bumps the Note7 up to 850 USD."

    You must work for apple if you somehow think that 32Gb of on board storage is worth $100. FFS its about 1/5 that to buy in any other format.
  • bJammin - Tuesday, August 16, 2016 - link

    Sorry for a nitpick, but this isn't the first phone with an iris scanner, though probably the first with wide availability. Fujitsu's is only available in Japan right now, but I have one as my company phone. The phone and scanner are actually pretty slick too despite being based on older tech, though Fujitsu's interface is pretty awful.

  • Vagabondjonez - Tuesday, August 16, 2016 - link

    Still no htc 10 review or a Twitter response....
  • Lau_Tech - Tuesday, August 16, 2016 - link

    Well done on the improvements in timeliness and tone, Josh. I certainly agree with other reader opinions that the S-Pen deserved a full page of its own, given that it continues to be a distinguishing factor from all other phones. I understand that it may feel unnecessary if its the same as last years models, but it is still worth a re-look and run through. After all, Samsung's screens have not changed much either, and you still ran them through a gamut of tests.

    I must say that your continued placement of Samsung's AMOLED's as being "one of the best" or equal to Iphones to be have long since been untenable. Samsung's AMOLED beats or equals the Iphones in every one of your metrics. Colour-shifting remains the sole issue, but is not on its own sufficient to deny Samsung's phones the title of "best display, period".
  • Lau_Tech - Tuesday, August 16, 2016 - link

    I should also point out that your (justified) decision to be nit-picky about design must be applied fairly to your upcoming iphone 7 review as well.

    If you intend to highlight design issues that do not affect the user experience (as has been done in this review), I would expect that you find fault with the Iphone 7s IF the Iphone 7s maintain the unwieldy bezel sizes of the 6 plus, and the added inconvenience of the USB-only audio jack. These should count as negatives against the Iphone 7s.

    Your criteria for commenting on design must be seen as fair.
  • JoshHo - Wednesday, August 17, 2016 - link

    If there's a real demand for this sort of ID analysis I'll keep going with it.

    To outline some of my personal thoughts for design:

    1. I don't see a ton of value to extremely thin bezels. Excessive bezel like the M8/M9 is one thing but the 6s Plus had no issues with ergonomics in use. I view phablets as phones that need two hands to be used but still fit in one pocket so I don't pay that much attention to bezel unless it's really egregious like the M8/M9.

    2. The S-Pen would have received further analysis but battery life testing alone took up a full 3 days. It's been made clear to me that timeliness is critical so I would rather cut out discussion on things that are fairly well understood and revisit it in future short-form than cut out data that answers essential questions.

    3. To me AMOLED's color shifting issues are fairly significant and power efficiency in high APL scenarios is still lagging slightly behind LCD. If power efficiency rises above LCD then I would say shipping LCD would automatically count as a negative against an OEM, but until that comes to pass I think it's important to weigh these things on a case by case basis.

    4. If the iPhone 7 loses the 3.5mm jack it would require close examination and weighing of the advantages and disadvantages. I would trend towards likely being a bad idea but we'll have to see how it plays out. There are a lot of ways this could be executed and some are good but others are awful.
  • Lau_Tech - Wednesday, August 17, 2016 - link

    Thanks for the detailed reply Josh, I appreciate the time taken.

    Im definitely with you with regards to points 2 and 4. I think with regards to points 1 and 3 we will have to agree to disagree.

    I look forward to the HTC 10 review, of which I am already an owner. I'm sure you'll be able to point out interesting things about this device (some nuggets already present in this review)
  • jlabelle2 - Friday, August 19, 2016 - link

    I am also quite shocked about the change on editorial note (because it seems really to be that) since Anand departure. Even with Anand working for Apple, reviews were still much more factual.
    I have an iPhone 6S but honestly, there is not denying that the S7 Edge and Note 7 are just a marvel of design.
    Also, saying that bezels do not matter is NOT a matter of opinion. We are speaking of phablet here and the very reason why not everyone have 6" phones is the size of those phones. So when the Note 7 include a 5,7" screen in a form factor which is 5mm shorter and 4mm narrower than a 5,5" iPhone 6+, this is huge achievement and has a significant competitive advantage compare to the iPhone or other bulkier large phone.
    At last, how can anyone still defend LCD against Samsung OLED screen implementation? The argument that there would be color shifting when looking the phone from the side (which obviously no one is doing) shows the extent of bad faith.
    Again, as an iPhone (and Windows phone user), and having no Android, I am puzzled by such review and what kind of goal is tried to be achieved...
  • NitT - Tuesday, August 16, 2016 - link

    I feel like I am a minority here as I am OK with Touchwiz. I do not feel any lagging. On the other hand, when I use other Android phones such as HTC or Vivo, I feel that I miss so many settings. My latest HTC phone was HTC M7/M8. It is quite sad as I could not find newer HTC flagship models in my country.
  • WoodyPWX - Wednesday, August 17, 2016 - link

    Finally someone who isn't afraid to say something bad about Note 7. Every other reviews are practically without any real criticism. Thanks for a honest review!

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