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NewDwarf LCD iPhones definitely do dither. You can see how the admin of flicker sense did testing on it.
She has the iPhone test data here:
https://www.flickersense.org/testing-leds-and-screens
I disabled dithering on Apple silicon + Introducing Stillcolor macOS M1/M2/M3
What happens if you plug an Apple Silicon Mac into a true 10 bit LCD without PWM. Does the GPU/driver still dither? Or would it detect the display as able to really show 10 bits and be flicker free?
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I tried as listed as "10 bit" Eizo ColorEdge CS2740 with some PCs. Don't have the display anymore. Hope someone with a similar or better panel can test again with Stillcolor. Is this "true 10 bit" (it costs more than some cars): https://www.eizoglobal.com/products/coloredge/cg3146/index.html#tab02
I am not going to spend $33K on that Eizo however lol. It is for Hollywood...
https://www.itsupplies.com/Eizo-ColorEdge-Prominence-CG3146-HDR-Monitor-p-CG3146-BK
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NewDwarf They do I can clearly see and feel moving static patterns / dithering on my iPhone SE 2 (LCD) screen (it has iOS 17.2.1) and gradients also look more smooth than they "should" on my 14 Pro with iOS 16 too.
Not sure about the OLED iPhones (since it has backlight precision per pixel, it might be using that instead to achieve greater color depth i.e. different PWM frequency per pixel), but for the LCD, it's so obviously using temporal dithering to my eyes. I have an iPhone 6 and iPhone 7 with the same resolution and size screen that feel so much more comfortable than the SE does.
However I have some older devices that don't dither or dither less, like an iPad 6 with an earlier version of iOS 15 that shows way more banding on gradients, shadows, and transparency effects.
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One last thing worth noting is what that "flagship" Eizo's marketing says:
"stable display using industry-first ai" and "the color and brightness of an LCD monitor can shift due to changes in ambient temperature and the temperature of the monitor itself" and using that temperature data, the monitor "adjust in real-time so gradations, color, brightness and other characteristics continue to be displayed accurately." Wow and what "other characteristics". Lastly for laughs or feelings of anger they say "a small number of people perceive flicker on their screen which causes eye fatigue". I heard they cheat by using high frequency PWM at low brightness levels on other models.
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deepflame I'd recommend the M2 Air or M3 Air instead. The M3 Pros and other Pros with XDR displays have a lot more quirks with their screen (for example, they have 10,000 individually controlled backlights behind the screen that all basically use different PWM frequencies per zone to dim at independent amounts) that we don't know everything about or how to solve yet.
I've already discovered two additional properties unique to the Pros that are needed in addition to disabling dithering to further improve the screen output, there are a lot of extra things the Pro displays do that are currently unknown.
Meanwhile, M2 Airs have a simple, traditional edge-lit LCD for the most part with a PWM-free backlight, and Stillcolor can resolve a very significant amount of issues with their display output.
DisplaysShouldNotBeTVs
Do you know if the iPhone 7 plus dithers? I would so go back to an old device if it's safe lol.
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photon78s yikessss lol. All that color changing stuff sounds like a mess. Can we just get basic displays without all this wacky tech! haha. Wow even if we don't perceive flicker it still affects us, definitely angering when I see people post stuff like that. Most people who "aren't affected" just haven't connected it to their screens I'm sure
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jordan No idea, the old Plus phones use scaling FYI so they're not pixel accurate, it's taking a 2K image but then downscaling it down to a 1080p panel like how Macs do when they're not on @2x resolution. If you're sensitive to that I'd recommend a regular 7 instead.
All I know is that my regular 7 with an earlier version of iOS 15 is very comfortable compared to my SE 2. It does have a P3 color display, but it doesn't seem to affect me — even though it still does display brighter reds than sRGB, it doesn't have the extremely oversaturated reds that my SE 2 has.
The only reason I don't use my 7 really is due to 60% battery health and a broken "loose" charging port, meaning I can't use it while it's charging and mine only lasts for 1 hour. But you can definitely find a 7 in way better condition than mine is, lol.
I've heard some people here talk about iPhone 7 suddenly becoming unusable with iOS 15.7 or 15.8, so look for one on an earlier version.
IIRC I remember iPhone screens starting to feel "weird" (way before I learned what temporal dithering was) when the iPhone 8 launched, I knew a friend with an iPhone 8 and even on its original version I thought the screen looked "weirdly smoothed out" or "overly glowing and shiny" to me. So iPhone 7 is probably the last "good" iPhone LCD, at least concerning how the software is choosing to render to it.
photon78s I heard they cheat by using high frequency PWM at low brightness levels on other models.
From what I understand, some models of EIZO monitors have a minimum brightness of ~40cd/m2 and others can go down below that. The latter seems to work by using DC dimming circuitry to a point but than switching to high frequency PWM below that.
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If what I read is correct, color accuracy, power consumption, reliability, and probably more would suffer. So much marketing and competition with everything else as we all know is focused towards colors and more "accurate" colors and to satisfy that greed of making the screen look like "reality". I echo Jordan's view. I just want a basic usable display!