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I had an iPhone Air with a GVC panel and it was really bad. Awful blueish tinting when shifted and even straight on you can kinda see a bar on the bottom, uniformity was bad. Also looked at G9P and G9N on the Pro's, and they all actually looked pretty good. Currently testing a G9N Pro and the screen looks good, not a lot of color shift en pretty uniform from what I can tell. Problem is, I am PWM sensitive and I get blurry vision when I use the phone so I might have to return it anyway, it's a great device though, wish I could use it :(
 
My friends hello. I’m noticed this idk what is it. Iph 17 pro max. It’s not an hdr video it’s standard video. My screen gets a good brightness and than it dimming why? I dont know who can help? I haven’t seen this before. Why its get dimming? It’s can be software? I also can scroll my inst and its can be brightness up( not made photo or video) standard photo and video and than gets dimming. G9Q. I’m worrying really😕
I deliberately lowered the brightness of the video on the phone I was filming on so that it would be visible.

 
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My friends hello. I’m noticed this idk what is it. Iph 17 pro max. It’s not an hdr video it’s standard video. My screen gets a good brightness and than it dimming why? I dont know who can help? I haven’t seen this before. Why its get dimming? It’s can be software? I also can scroll my inst and its can be brightness up( not made photo or video) standard photo and video and than gets dimming. G9Q. I’m worrying really😕
I deliberately lowered the brightness of the video on the phone I was filming on so that it would be visible.
Well, for one, do you have auto brightness on?
 
I can only encourage everyone to read the article above. It explains a lot concerning the different screen manufacturers and quality’s.

One of the most serious technical errors in the article is the assumption that Samsung panels are “sharper” because they use a Diamond Pixel arrangement. At first glance this sounds plausible, but it reflects a fundamental misunderstanding between subpixel geometry and effective visual resolution.

The Diamond Pixel layout is a variant of the PenTile OLED matrix developed by Samsung Display for AMOLED panels.

Unlike a standard RGB stripe arrangement, where every logical pixel contains three subpixels (red, green, and blue) of equal size in linear order, a Diamond Pixel matrix uses:

-unequal subpixel sizes: green is smaller and more numerous, while red and blue are larger and less frequent

-a non-linear pattern: subpixels are arranged in a diamond shape, alternating the position of red and blue in successive rows

This layout was introduced for manufacturing and efficiency reasons, not to improve visual sharpness or color fidelity.

In other words, it is an engineering variation, not an optical enhancement.

In an RGB stripe display, every logical pixel is composed of three dedicated subpixels.

In a Diamond or PenTile layout, neighboring pixels share subpixels.

As a result, the total subpixel count is lower than in an RGB equivalent.

For example, an RGB matrix of 1170×2532 pixels would have roughly 8.88 million subpixels.

A Diamond Pixel panel of the same logical resolution has about 25–30% fewer physical subpixels.

From a physical standpoint, this means the color resolution is slightly reduced and must be compensated by software.

To avoid visible color fringing and jagged edges, the operating system performs subpixel rendering, adjusting how each subpixel contributes to the perceived color and edge definition.

In iOS, this process is specifically tuned to each panel’s subpixel geometry.

That means the text does not look sharper because of the Diamond Pixel layout; it looks normal because iOS compensates for the geometric irregularities.

Depending on font size, zoom level, and alignment, Diamond layouts can even produce color fringing if the rendering algorithm is not perfectly adjusted.

Apparent sharpness therefore varies with rendering conditions, not with the hardware itself.

Objective sharpness is measured by the Modulation Transfer Function (MTF), which describes a panel’s ability to reproduce contrast at different spatial frequencies.

When PenTile and RGB panels with the same nominal pixel density are measured, PenTile panels typically show a lower MTF, especially along diagonal and vertical edges, because the subpixels are not perfectly aligned.

Apple’s rendering pipeline smooths these edges intentionally to reduce aliasing, which in turn lowers edge contrast slightly.

From an optical standpoint, a Diamond Pixel panel does not deliver higher measurable sharpness. In many cases, it delivers less.

About panel uniformity and tint/hue,
I refer to the evidence from the cases presented in this thread and in previous years.
 
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One of the most serious technical errors in the article is the assumption that Samsung panels are “sharper” because they use a Diamond Pixel arrangement. At first glance this sounds plausible, but it reflects a fundamental misunderstanding between subpixel geometry and effective visual resolution.

The Diamond Pixel layout is a variant of the PenTile OLED matrix developed by Samsung Display for AMOLED panels.

Unlike a standard RGB stripe arrangement, where every logical pixel contains three subpixels (red, green, and blue) of equal size in linear order, a Diamond Pixel matrix uses:

-unequal subpixel sizes: green is smaller and more numerous, while red and blue are larger and less frequent

-a non-linear pattern: subpixels are arranged in a diamond shape, alternating the position of red and blue in successive rows

This layout was introduced for manufacturing and efficiency reasons, not to improve visual sharpness or color fidelity.

In other words, it is an engineering variation, not an optical enhancement.

In an RGB stripe display, every logical pixel is composed of three dedicated subpixels.

In a Diamond or PenTile layout, neighboring pixels share subpixels.

As a result, the total subpixel count is lower than in an RGB equivalent.

For example, an RGB matrix of 1170×2532 pixels would have roughly 8.88 million subpixels.

A Diamond Pixel panel of the same logical resolution has about 25–30% fewer physical subpixels.

From a physical standpoint, this means the color resolution is slightly reduced and must be compensated by software.

To avoid visible color fringing and jagged edges, the operating system performs subpixel rendering, adjusting how each subpixel contributes to the perceived color and edge definition.

In iOS, this process is specifically tuned to each panel’s subpixel geometry.

That means the text does not look sharper because of the Diamond Pixel layout; it looks normal because iOS compensates for the geometric irregularities.

Depending on font size, zoom level, and alignment, Diamond layouts can even produce color fringing if the rendering algorithm is not perfectly adjusted.

Apparent sharpness therefore varies with rendering conditions, not with the hardware itself.

Objective sharpness is measured by the Modulation Transfer Function (MTF), which describes a panel’s ability to reproduce contrast at different spatial frequencies.

When PenTile and RGB panels with the same nominal pixel density are measured, PenTile panels typically show a lower MTF, especially along diagonal and vertical edges, because the subpixels are not perfectly aligned.

Apple’s rendering pipeline smooths these edges intentionally to reduce aliasing, which in turn lowers edge contrast slightly.

From an optical standpoint, a Diamond Pixel panel does not deliver higher measurable sharpness. In many cases, it delivers less.

About panel uniformity and tint/hue,
I refer to the evidence from the cases presented in this thread and in previous years.
So true regarding Samsung panels and diamond pentile panels. I remember this discussion when Samsung introduced this also at the time. The article that the poster linked to was nothing more than hearsay. Personally I don’t buy into Samsung panel P or Q or N having any sort of grading attributes to them.
 
Zoop! I honestly don't see any issues. I do notice that True Tone does change hues between my two phones (Air and 17P) side by side.
The True Tone lottery. It behaves differently with every single panel. The other day, while looking at an iPhone 13 GH3, I had to check twice to make sure Night Shift wasn’t on. Super aggressive. Without True Tone, the whites looked similar to those on my Air.
 
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I just got my 17 pro max and it’s a GH3 panel.
When I compared in the store (explained here) all the pro had a better display than the pro max (the pro max had some green hue when looking off axis). Mine is the same, so it seems that around here these are the kind of panels arriving…

My 13 pro max (g9n) was already slightly greenish compared to other 13 pros when I bought it. This 17 pro max looks the same color when at the front than the 13 pro max, but when tilting I can see the slight color shift worse than in the older phone. But I placed a screen protector right away so might also worsen things (my 13 doesn’t have currently).
Tomorrow during daylight I’ll check if it’s brighter as it should…
 
So true regarding Samsung panels and diamond pentile panels. I remember this discussion when Samsung introduced this also at the time. The article that the poster linked to was nothing more than hearsay. Personally I don’t buy into Samsung panel P or Q or N having any sort of grading attributes to them.
It’s a very poorly documented article that also does a disservice to Samsung panels by using as an example something that has always been considered a botched design in circles that discuss OLED panels. In this very forum there are dozens of threads talking about PenTile or, as Samsung perhaps calls it for marketing reasons, Diamond Pixel.

In any case, one thing must also be taken into account: user preferences. Ninety percent of the new participants in this thread judge a panel’s quality solely by whether or not it shows color shift when tilted. In the past, as in the thread I shared recently, people tended to prioritize uniformity and color tint when viewed head-on as the main criteria for evaluating an OLED panel’s quality.

I suppose times change, and so do users. I know what matters to me, and I’m not trying to convince anyone to think like I do—but I do like discussing the many other factors that affect the quality of an OLED panel.
 
It’s a very poorly documented article that also does a disservice to Samsung panels by using as an example something that has always been considered a botched design in circles that discuss OLED panels. In this very forum there are dozens of threads talking about PenTile or, as Samsung perhaps calls it for marketing reasons, Diamond Pixel.

In any case, one thing must also be taken into account: user preferences. Ninety percent of the new participants in this thread judge a panel’s quality solely by whether or not it shows color shift when tilted. In the past, as in the thread I shared recently, people tended to prioritize uniformity and color tint when viewed head-on as the main criteria for evaluating an OLED panel’s quality.

I suppose times change, and so do users. I know what matters to me, and I’m not trying to convince anyone to think like I do—but I do like discussing the many other factors that affect the quality of an OLED panel.
What does this have to do with the iPhone panels?! You keep talking about the TV OLED technologies (WOLED vs QD-OLED), which has nothing to do with the iPhone panels whatsoever. Apples to oranges, literally.
 
The True Tone lottery. It behaves differently with every single panel. The other day, while looking at an iPhone 13 GH3, I had to check twice to make sure Night Shift wasn’t on. Super aggressive. Without True Tone, the whites looked similar to those on my Air.
Thats good to know because I thought I was losing it. Seems like BOE might be more aggressive than the G9Q in my Air. At least no dead pixels. That's always a bummer.
 
Zoop! I honestly don't see any issues. I do notice that True Tone does change hues between my two phones (Air and 17P) side by side.
TT cracks me up. Apple know the screen calibration, Apple know the temperature of the light entering the sensors, but they can’t calibrate it to make 2 screens next to each other look the same 🤣🤣
 
I have a strange issue. Left is iPhone Air, right is 16 Pro. Both phones have GVC according to 3utools. But on Air white looks... a bit strange. Also Air gives me eyestrain and just a little bit dizziness. It didnt on 1-2 days, but since the 3rd day it does (now the 5th). Was thinking about selling my 16 Pro, but now i'm on a fence
 

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I have a strange issue. Left is iPhone Air, right is 16 Pro. Both phones have GVC according to 3utools. But on Air white looks... a bit strange. Also Air gives me eyestrain and just a little bit dizziness. It didnt on 1-2 days, but since the 3rd day it does (now the 5th). Was thinking about selling my 16 Pro, but now i'm on a fence
Air looks bad comparing to that 16 Pro. What’s even the point of upgrading from 16 pro to Air?
 
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