Become a MacRumors Supporter for $25/year with no ads, private forums, and more!

iPhone XS Max Auto-Brightness Glitch

leftcoastnomad

macrumors newbie
Original poster
Oct 3, 2018
12
1
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
 
Last edited:

Brad Smith

macrumors regular
Oct 13, 2003
183
28
Vancouver, BC, Canada
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
 
Comment

leftcoastnomad

macrumors newbie
Original poster
Oct 3, 2018
12
1
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.
 
Comment

leftcoastnomad

macrumors newbie
Original poster
Oct 3, 2018
12
1
Comment
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.