JUMP TO SOLUTION Solved

Original topic:

Adaptive Brightness sensor problem

(Topic created on: 2/19/21 9:32 AM)
userNRWeLgdlUO
Constellation
Options
Galaxy S20

After upgrade my S20 FE 5G  to Android 11,the adaptive brightness sensor in low light conditions  ,started to going up and down the brightness of the phone without any particular reason...Imagine to read an article and the brightness going up and down every 3 seconds..very  frustrating!!!

Any help here??

user3ISbbIFgg0
Astronaut
Options
Galaxy S20

Please, roll update as soon as possible! 

0 Likes
Reply
SamsungQue
Samsung Moderator
Samsung Moderator
Options
Galaxy S20

Does this issue still occur when your phone is in safe mode?

0 Likes
Reply
userORq1s1Qcn9
Asteroid
Options
Galaxy S20

Yes it still occurs in safe mode.  Tested today.

0 Likes
Reply
SamsungAdam
Samsung Moderator
Samsung Moderator
Options
Galaxy S20

My next step would be wiping the cache partition. The system cache partition stores temporary system data. It's supposed to allow the system to access apps more quickly and efficiently, but sometimes things get cluttered and outdated, so a periodic cache clearing can help make the system run more smoothly. Give these steps a try: 

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby / Power key.
  3. When the Android logo displays, release both keys.
  4. An 'Installing system update' message may show briefly before the Android Recovery menu options appear.
  5. Press the Volume down key several times to highlight Wipe cache partition.
  6. Press Bixby / Power key to select.
  7. Press the Volume down key to highlight Yes, then press the Bixby / Power key to select.
  8. When the process is complete, Reboot system now is highlighted.
  9. Press the Bixby / Power key to restart the device.

Be sure to click " ✓ Accept as Solution" when you find an answer that works for you.





Please note, notification emails are a DO NOT REPLY address, you must log-in on the community page in order to respond.

0 Likes
Reply
userORq1s1Qcn9
Asteroid
Options
Galaxy S20

Thanks - it took me a while to work out why my phone wouldn't boot in recovery mode.  I understand with Android 11 it needs to be plugged into the USB cable first. 

Anyway, wiping the cache partition has not fixed the issue.

0 Likes
Reply
userORq1s1Qcn9
Asteroid
Options
Galaxy S20

Same issue with my device in Australia.  Australian support say it's not a known bug.  Advised factory reset.  Interestingly it doesn't happen on all pages on the phone.  It's happening now, as I type, but if I change Google tabs it may not happen on the other tab.  It happens in Settings, but not Outlook.  It happens in Play Store, but not my home screen.

0 Likes
Reply
userjL93QIpkVl
Astronaut
Options
Galaxy S20

I have same problem with my s20 fe exynos, brightness continuosly getting low and high without any change in room light

0 Likes
Reply
usere1iKcfoQu6
Asteroid
Options
Galaxy S20

It happens on pages where the dominant background colour is white.

If you use night mode, the problem almost disappears. 

I was able to update to UI 3.1 before it was pulled, and with this new UI the problem seems almost disappeared (it occurred only in some occasions, but really really rarely). 

0 Likes
Reply
Radiokot
Constellation
Options
Galaxy S20

I have this issue on my S20 FE with the latest software updates. This is frustrating, I have to disable auto-brightness in low-light locations because otherwise this oscillation from dark to bright drives me crazy 

0 Likes
Reply
useriy73ve3IN2
Constellation
Options
Galaxy S20

One UI 3.0 and same problem.

0 Likes
Reply