iPhone 12 Pro Yellow Screen/Tint? Display seem "Warm"? Check here first!

[ghosttrooper]

If you need to ask, you’re not qualified to be able to understand. I won’t argue with randos.

So asking for qualifications makes me not qualified to understand?

You stating things like you are reading them off the Apple support site, but in reality your in the same boat as the rest of us. Is the ambient light sensor broken? Maybe but know one really knows. And your test scenario wouldn’t even point to a hardware fault, it would point to a software issue.

 

[aakshey]

So asking for qualifications makes me not qualified to understand?

You stating things like you are reading them off the Apple support site, but in reality your in the same boat as the rest of us. Is the ambient light sensor broken? Maybe but know one really knows. And your test scenario wouldn’t even point to a hardware fault, it would point to a software issue.

A software DFU restore won’t fix this. A hardware swap will even if you restore from backup. What does that tell you?

 

[ghosttrooper]

A software DFU restore won’t fix this. A hardware swap will even if you restore from backup. What does that tell you?

Well that’s not the same scenario is it. Your test scenario is essentially saying that the ambient light sensor is working 100% of the time even if the setting is off. This in no way indicates the sensor is bad. It just tells me the software is screwed up. If the screen brightness were to never change with the AB turned on, that’s most likely a hardware issue.

 

[aakshey]

Well that’s not the same scenario is it. Your test scenario is essentially saying that the ambient light sensor is working 100% of the time even if the setting is off. This in no way indicates the sensor is bad. It just tells me the software is screwed up. If the screen brightness were to never change with the AB turned on, that’s most likely a hardware issue.

You didn’t understand. This issue will not get fixed with DFU. And nor will it get spread to another device from backup.

 

[ghosttrooper]

You didn’t understand. This issue will not get fixed with DFU. And nor will it get spread to another device from backup.

Like I said, I agree that’s a hardware issue. I’m talking about your test that you posted with steps. The test proves nothing.

I just don’t want to spread fake tests/data.

 

[aakshey]

Like I said, I agree that’s a hardware issue. I’m talking about your test that you posted with steps. The test proves nothing.

I just don’t want to spread fake tests/data.

Any device affected by that test will not be fixed by DFU. Feel free to test yourself.

 

[netnative]

Do share your qualifications please. You can’t just say “I have technical knowledge” or “From past experience”. Are you a hardware/software engineer? Do you work on phones or at Apple? Being a good Googler isn’t the same as having technical knowledge.

Without discounting the value of experience and self-education, these are fair questions in evaluating the extent of a person’s technical knowledge.

 

[M5RahuL]

No.

The below is only valid for Apple OLEDs:

If you set brightness to 100%, turning off AB will increase brightness if ambient lightning isn’t very high.

If however you’re in high ambient lightning (but not super high, example directly under the sun):

And if your brightness level isn’t 100 nor 0%. ideally test around 50%.

Then turning off AB shouldn’t increase brightness. If it does, it is an ALS defect.

It could be slight or extreme based on how much additional brightness you gain with AB off.

Slight can be ignored since it is very common these days.

Test:

Test to be done under below lighting conditions:

Artificial/Tube/LED light/Dark room/Not too much sunlight - (Indoors)

Autobrightness should be on/shouldn’t be turned off

Set brightness level manually to around 50%

Open Safari Google.com white background

Observe for 5-10 seconds

Turn off auto brightness

Again open same page on Safari Google.com

Wait 15-30 seconds

If brightness level increases a lot, ALS is defective. If brightness level stays same, phone is perfect.

Don’t do test at 100/0% brightness. Only middle level brightness. Don’t do test outside.

Please confirm receipt of this message

No.

The below is only valid for Apple OLEDs:

If you set brightness to 100%, turning off AB will increase brightness if ambient lightning isn’t very high.

If however you’re in high ambient lightning (but not super high, example directly under the sun):

And if your brightness level isn’t 100 nor 0%. ideally test around 50%.

Then turning off AB shouldn’t increase brightness. If it does, it is an ALS defect.

It could be slight or extreme based on how much additional brightness you gain with AB off.

Slight can be ignored since it is very common these days.

Test:

Test to be done under below lighting conditions:

Artificial/Tube/LED light/Dark room/Not too much sunlight - (Indoors)

Autobrightness should be on/shouldn’t be turned off

Set brightness level manually to around 50%

Open Safari Google.com white background

Observe for 5-10 seconds

Turn off auto brightness

Again open same page on Safari Google.com

Wait 15-30 seconds

If brightness level increases a lot, ALS is defective. If brightness level stays same, phone is perfect.

Don’t do test at 100/0% brightness. Only middle level brightness. Don’t do test outside.

Please confirm receipt of this message.

Okay, so I just had a conversation about this with my neighbor who is a one of the lead developers for Android at Google.

Your posted test holds no water!

If ALS causes your screen to dim vs being brighter with AB off, ALS is NOT defective but working as expected per the requirements, coded by the iOS devs!

The ALS algorithm may need to soft-adjusted, but it’s not hardware at all!

 

[aakshey]

Okay, so I just had a conversation about this with my neighbor who is a one of the lead developers for Android at Google.

Your posted test holds no water!

If ALS causes your screen to dim vs being brighter with AB off, ALS is NOT defective but working as expected per the requirements, coded by the iOS devs!

The ALS algorithm may need to soft-adjusted, but it’s not hardware at all!

Lol. Somebody who has no experience with Apple OLEDs commenting?

Theoretically a software fix might work. But practically that will never happen. A replacement however will do the trick.

If you were smart enough, you would do the right thing.

 

[xochiquetzal15]

I do have technical knowledge. The reduced brightness is an ALS issue. If you disable Auto Brightness, your screen will be much brighter. Reduced contrast will be fixed too.

All other issues are unrelated to this issue. This particular issue is hardware related and won’t be fixed via a software update.

Yellow/Black/Green all might be issues, but unrelated to AB or ALS.

It is possible this is a hardware or software issue and may or may not be partly fixed, I wouldn’t bank on a full fix. But Apple might fix non AB non ALS issues to make the devices tolerable.

I have anyway heard newer replacements are fine. So it is best to return by 8th Jan and buy a new device in Jan or Feb.

Wow I always thought auto-brightness would not make any difference when you have brightness at 100%, but switching it off really improved brightness and contrast dramatically. It is now a lot better. Thanks!

 

[aakshey]

Okay, so I just had a conversation about this with my neighbor who is a one of the lead developers for Android at Google.

Your posted test holds no water!

If ALS causes your screen to dim vs being brighter with AB off, ALS is NOT defective but working as expected per the requirements, coded by the iOS devs!

The ALS algorithm may need to soft-adjusted, but it’s not hardware at all!

And you’re pretty lol yourself, because for 90% iPhones this issue won’t be there. So Apple won’t do anything to fix this. It only affects defective iPhones.

 

[netnative]

I wish that @EricaGriffin would weigh-in on this discussion. She knows displays.

 

[aakshey]

Wow I always thought auto-brightness would not make any difference when you have brightness at 100%, but switching it off really improved brightness and contrast dramatically. It is now a lot better. Thanks!

Test below 100%. Ideally it should make no difference.

If that's his real photo he looks like he's still in school lol.

At that time yes I was in school. Now I’m 30.

 

[xochiquetzal15]

Test below 100%. Ideally it should make no difference.

Yeah, below 100% is also better or at least as good as IPhone 8 now!

 

[aakshey]

Yeah, below 100% is also better or at least as good as IPhone 8 now!

Just get a replacement.

 

[Micaltech]

should come out ios 14.2.2 hopefully it can fix something

 

[madrigal77]

I’ve noticed my screen looks a lot cooler in natural light than inside in warmer light. Even with TT off. I’m wondering if the issue is caused by a TT bug with it not fully turning off.

 

[xochiquetzal15]

Just get a replacement.

Do you think that is fixed on the newer devices? I mean, auto-brightness algorithm and and true tone aggressiveness.

I do not want to end up having a more yellowish display after replacement. I can live with both AB and TT off.

 

[aakshey]

Do you think that is fixed on the newer devices? I mean, auto-brightness algorithm and and true tone aggressiveness.

I do not want to end up having a more yellowish display after replacement. I can live with both AB and TT off.

It isn’t about newer or older. This is just a common defect. Depends on your luck.

 

[aakshey]

I’ve noticed my screen looks a lot cooler in natural light than inside in warmer light. Even with TT off. I’m wondering if the issue is caused by a TT bug with it not fully turning off.

There can’t be a TT bug when it is off. There are no such reported TT bugs AFAIK.

should come out ios 14.2.2 hopefully it can fix something

What are you hoping it should fix?

 

[javisan]

I wish that @EricaGriffin would weigh-in on this discussion. She knows displays.

She has. Go to YouTube and read her replies to the video she made discussing the 12 displays and also a comment she left in Zollotech’s video on the same topic.

 

[jheeze]

I continue to think looking at the graphs posted here and elsewhere that the issue is not necessarily the greens being too strong. I see the blue color too low in lower end of the grayscale. Red is also lower but a bit better in some cases. If red and blue are too low your getting a more greenish tint. If the red is doing better, then you’re going to perceive a yellowish tint as the blue is too low and green and red make yellow.

While everyone is focusing on the slightly higher greens, what catches my attention is the significantly lower red and blue, especially blue, at the lower end of the grayscale. Had blues been higher, this would not such a big problem on the 12s.

That’s an interesting observation. I wish I could test my panel, but I’d assume I might get results that align with a lower blue level than red level. It might be useful for the OP to add these RGB graphs that testers are making as attachments on the first post, so we can see the variations in findings.

 

[Chynonyno]

I'm looking forward to an update and fix it!

 

[Chynonyno]

I’ve noticed my screen looks a lot cooler in natural light than inside in warmer light. Even with TT off. I’m wondering if the issue is caused by a TT bug with it not fully turning off.

Call me crazy but I have noticed it too.

in fact, I mentioned it the other day around here.

 

[jheeze]

This is Erica Griffin’s comment on Zollotech’s YouTube video:

“The issue is these displays are coming closer to the standard for sRGB, which is 6504K, D65 white. But when they are doing this the blue color channel is lacking within the grayscale, which leaves red and green higher in the grayscale balance. Red and green wavelengths make yellow. Sometimes green will be a bit higher then red and you get greenish yellow. The iPhone X was a cooler white. It had much more blue. LCDs are often quite blueish and that is what people are used to and coming from. Blue is perceived as brighter and whiter, cleaner. Where a yellowish display looks dingy and worn out. After the iPhone X I’ve been seeing this on all oled displays released afterwards. You can have a white point that is a color temperature of 6500 (correlated color temp) along the 6500 Kelvin isotemperature line without actually being white. This is where I think there are some calculation and calibration errors. Unless they are doing this on purpose to keep the blue channel down to be less straining on the eyes. Still that doesn’t make sense. Nevertheless it doesn’t look nice. So as it is 6504k, D56 white is a warmer looking color temp than most people are used to, having come from LCDs or a cooler iPhone. But what they are being most disturbed by is the RGB balance being slightly unnatural with too much green. The sky looks yellow and even reddish or cool in the shade but I’ve never seen a greenish sky... it’s a true to life color and you WILL notice when those are off. Messing with the color filters will decrease the brightness of the display and doesn’t actually fix anything but may be nicer to look at.”