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So it sounds like there are a couple of different issues. But Brad Smiths above sounds most like mine. Both my iPhone XS Max's do it. Here's the scenario: When auto brightness is dimming the screen (say from 50% down to 10% or something), when it hits around ~20% there is a big jump down in brightness that appears like a flicker. Above that 20% mark it is a smooth transition, and from 20% down to 1% it is smooth too. You can test it by going to brightness screen, stand somewhere with bright light, then move somewhere with no light. Watch the slider go down and then watch the white area of the screen and you'll see it 'flicker' down in brightness. Both my phones do it. Anyone else experience this?
[doublepost=1538365442][/doublepost]Just realized that you don't need to use auto brightness to test. Just slide the brightness bar really slowly from about 5% to 30%. You will hit a point where brightness jumps dramatically instead of smoothly. It MAY be software because the point is not set, it actually seems to move a little bit. But somewhere around 18%.

Yes, I see this exact behaviour. Like a split-second drop in brightness around the 18% mark. Also happens (but to a far lesser degree) around the 45% mark.
 
So I got mine replaced at the Apple Store and the new one appears to be doing the exact same thing. Going to do some more tests tonight, but sadly this might be a wider problem than just a few bad phones out there. I'm hoping maybe I just got unlucky twice in a row, or that this is a software issue. In other news, a friend managed to already scuff up the stainless steel and the phone is less than 24 hours old...
 
not all of em do it. hardware issue. prob a build defect with the sensor

I saw a similar thread and someone had checked in the Apple Store, going through 9 XS/XS Max models in total and they all exhibited this behaviour. Turning off Night Shift and True Tone temporarily seems to fix the issue, so it looks like a software quirk.
 
My replacement device doesn’t do it as per my original device.

I think the posters have spotted two separate issues:

- An auto brightness 'flicker' lasting 2-3 seconds, which you describe, which does not sound normal and resolved on replacing the handset.
- A widespread reproducible split second subtle 'drop' in brightness, which can appear as a single flicker and can be reproduced around the 20% brightness mark by very slowly moving the brightness slider down from 30% to 0% with Night Shift or True Tone enabled.

I agree, your issue looks to have described something more serious and I'm pleased swapping the handset resolved it.
 
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I think the posters have spotted two separate issues:

- An auto brightness 'flicker' lasting 2-3 seconds, which you describe, which does not sound normal and resolved on replacing the handset.
- A widespread reproducible split second subtle 'drop' in brightness, which can appear as a single flicker and can be reproduced around the 20% brightness mark by very slowly moving the brightness slider down from 30% to 0% with Night Shift or True Tone enabled.

I agree, your issue looks to have described something more serious and I'm pleased swapping the handset resolved it.
Sounds about right - I experienced the first issue you described. It indeed did last 2-3 seconds and looked like the screen was interlacing so to speak.
 
Yes they all have the split second drop in brightness at 18%. Hoping software fix soon. I report bug to Apple. So annoying because I keep my phone very dim (1-30%) so it is always hitting the dim/drop spot
 
I think the posters have spotted two separate issues:

- An auto brightness 'flicker' lasting 2-3 seconds, which you describe, which does not sound normal and resolved on replacing the handset.
- A widespread reproducible split second subtle 'drop' in brightness, which can appear as a single flicker and can be reproduced around the 20% brightness mark by very slowly moving the brightness slider down from 30% to 0% with Night Shift or True Tone enabled.

I agree, your issue looks to have described something more serious and I'm pleased swapping the handset resolved it.
Just to clarify, what I was encountering was constant (not just 2-3 seconds) and does not stop with turning off True Tone or auto brightness.
 
so I also replaced my MAX same issue but not as much as before so far.. must be software related so hopefully with the final 12.1 release everything should be resolved, it is extremely annoying.
 
No change with the 12.0.1 update still occurring when manually sliding the brightness level!
 
did anyone test this bug on beta 12.1? I have two xs and both have this ****** flickering
 
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8EB87405-7608-47DB-9FB1-173A74C77E58.jpeg



This image drives my XS crazy. Sets of full-screen slight flicker.. sometimes really bad and sometimes light.. but happens quite a bit.
[doublepost=1540991374][/doublepost]I am on 12.1. It does seem associated with the screen trying to ‘adjust’ something. I will try without auto-brightness on.
[doublepost=1540993292][/doublepost]
I think the posters have spotted two separate issues:

- An auto brightness 'flicker' lasting 2-3 seconds, which you describe, which does not sound normal and resolved on replacing the handset.
- A widespread reproducible split second subtle 'drop' in brightness, which can appear as a single flicker and can be reproduced around the 20% brightness mark by very slowly moving the brightness slider down from 30% to 0% with Night Shift or True Tone enabled.

I agree, your issue looks to have described something more serious and I'm pleased swapping the handset resolved it.
My issue is the first one.
 
I too have the issue where as the brightness changes past 18%, there is an abrupt increase/decrease in brightness that manifests as a flicker. It can be reproduced by sliding the brightness slider up/down past the 18% mark slowly.

I have had two XS Max devices with this issue. iOS 12.1.1 beta 1 does not fix it.
Issue discussed elsewhere:
https://discussions.apple.com/thread/8552190

http://www.shudhtech.com/2018/10/how-to-fix-iphone-xs-max-screen-flicker.html


I think this issue is pretty widespread based on other people's XS Max devices I've looked at. I think that most people don't realize the flicker is caused by the brightness auto-adjusted.
 
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I too have the issue where as the brightness changes past 18%, there is an abrupt increase/decrease in brightness that manifests as a flicker. It can be reproduced by sliding the brightness slider up/down past the 18% mark slowly.

I have had two XS Max devices with this issue. iOS 12.1.1 beta 1 does not fix it.
Issue discussed elsewhere:
https://discussions.apple.com/thread/8552190

http://www.shudhtech.com/2018/10/how-to-fix-iphone-xs-max-screen-flicker.html


I think this issue is pretty widespread based on other people's XS Max devices I've looked at. I think that most people don't realize the flicker is caused by the brightness auto-adjusted.

It looks like this issue only happens with TrueTone enabled which is interesting.
 
Had a follow-up with the Genius Bar and this is confirmed as a known issue with the XS models. According to the genius their instruction is to not replace the phones, as the engineers believe this is a software issue. The temporary fix is to go to Accessibility and use the reduce white point setting set to 60%.

I’m still not 100% convinced this isn’t a hardware issue and they are just trying to find a way to mask it a bit better with software for those models that are experiencing it. But that’s what I’ve been told.
 
Had a follow-up with the Genius Bar and this is confirmed as a known issue with the XS models. According to the genius their instruction is to not replace the phones, as the engineers believe this is a software issue. The temporary fix is to go to Accessibility and use the reduce white point setting set to 60%.

I’m still not 100% convinced this isn’t a hardware issue and they are just trying to find a way to mask it a bit better with software for those models that are experiencing it. But that’s what I’ve been told.

Hello,

I just received my XS. After 10’ using it, I agarres to del a light headache so I decided to do some tests:

Firstly, I disabled auto-brightness. Later, if I put Safari in about:blank page and reduce the brightness to 0%, I can’t directly see the flcikering, but if I look it using the iPhone XR camera then it’s pretty obvious.

I have to raise brightness to more than 50% or >30% + Enable reduce white point at 95%.

Same effect having TrueTone ON or OFF.

If I look the XR screen with the XS camera, no flickering in any case.

I see this hardly being solved by software... I believe this happens to all devices, because is how the OLED panel of iPhone X, XS and XS Max works. I think most people saying that their device is flicker free is because they have not tested it well, being necessary another camera to look at it...

Thoughts?
 
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Had a follow-up with the Genius Bar and this is confirmed as a known issue with the XS models. According to the genius their instruction is to not replace the phones, as the engineers believe this is a software issue. The temporary fix is to go to Accessibility and use the reduce white point setting set to 60%.

I’m still not 100% convinced this isn’t a hardware issue and they are just trying to find a way to mask it a bit better with software for those models that are experiencing it. But that’s what I’ve been told.
iOS 12.1.1 which I just installed still doesn't fix this issue where as the brightness slider passes 20% (either increasing or decreasing birghtness) the brightness changes abruptly. Some describe it as a single flicker. I believe they cannot fix it at this point. I am very surprised more people haven't complained. Its most obvious with both TrueTone and Night Shift on.
 
iOS 12.1.1 which I just installed still doesn't fix this issue where as the brightness slider passes 20% (either increasing or decreasing birghtness) the brightness changes abruptly. Some describe it as a single flicker. I believe they cannot fix it at this point. I am very surprised more people haven't complained. Its most obvious with both TrueTone and Night Shift on.

It seems that todays ios 12.1.2 beta takes a big step in the rigtig direction - the flicker is almost gone on my XS.
 
i have difficulty believing a beta changed PWM

I do not know what it takes to chance the PWM - but I do not see the same flicker since I updated 12 hours ago. Its like apple changes the way auto brightness works/changes brightness - it feels more smooth in a strange way. But thats just my opinion.
 
I do not know what it takes to chance the PWM - but I do not see the same flicker since I updated 12 hours ago. Its like apple changes the way auto brightness works/changes brightness - it feels more smooth in a strange way. But thats just my opinion.
I also had difficulty believing this but I just updated and it’s not noticeable at all with iOS 12.1.2 beta 1.
 
Noticed this a couple times in the last few days. Did a hard reset and so far so good
 
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