iPhone XS Max Auto-Brightness Glitch

[leftcoastnomad]

When I slowly move the brightness slider (accessed either from Settings or Control Center) across the ~20% brightness point, either going from dim to bright, or bright to dim, there is a sharp non-linear increase/decrease in brightness.

This also happens when auto-brightness moves the brightness level past this ~20% point (either going up or down in brightness) - there is that sudden increase/decrease "jump" in the brightness level.


Where I naturally use the phone, this happens quite a lot as the phone seems to operate right around that level, and my brightness occasionally "jumps" while I'm reading. It almost looks like a brief flicker.

I did return the original XS Max for this issue and noticed it happened on the replacement as well. I figured it was a software issue - but now with iOS 12.1 beta 5, its still happening.

Is this happening for anyone else?

EDIT:
Issue discussed elsewhere:
https://discussions.apple.com/thread/8552190

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

 

[Brad Smith]

Yes, and I’ve been through two iPhone XS models. It’s especially noticeable when watching video and manifests as a pretty obnoxious flicker about once per second

 

[leftcoastnomad]

Becauae auto brightness adjusts somewhat slowly I’m not sure this is something you would see once a second. Under normal usage in the right (or wrong) amount of ambient light it happens once every few minutes at most.

Aside from my two devices, one other person on this forum noted this issue with his XS Max. Very surprised 12.1 beta 5 didn’t fix it.

I’m starting to think I have defective hardware as a glitch this prominent would probably have a 100+ page thread here if everyone had it.

 

[leftcoastnomad]

Looks like this is a somewhat widely reported issue:
https://discussions.apple.com/thread/8552190

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

I think most do not notice it - most likely due to using their XS or XS Max in areas that are brighter or dimmer than where auto brightness would be adjusted across the ~18% brightness point. Others may perceive it as a flicker and not realize it is a brightness adjustment issue.