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Original topic:

Galaxy A40 adaptive brightness not working correctly

(Topic created on: 13-07-2020 11:45 PM)
JCApp
First Poster
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Galaxy A Series

Hi, i own the A40 for a few months now. And since a few weeks i noticed the automatic brightness function does not work like it should. 

A lot of the time the brightness is way to low and when im outside i cant see the screen in bright sunlight. I need to figure out where the toggle button is to turn of the auto brightness and move de slider to more brightness. 

A little frustrating. 

Also it changes very slow when light conditions change. Sometimes it does not change brightness at all. 

 

I also dont see any light sensor on the phone. 

 

I never had this issue with my galaxy A3 2017. I wish i had never sold that phone and never bought this. It is in no way better that the A3 (for me anyway) and the size of the A3 also was way beter. 

 

I came acros this thread about the S10 on XDA: https://forum.xda-developers.com/galaxy-s10/help/auto-brightness-guys-t3909444/page2 

I followed the instruction to do this: Additionally, developers say that users can reset the brightness curve to start the learning process again. To do this, go to Settings – Apps – Show system apps – Device Health Service – Storage – Manage Storage – reset Adaptive Brightness.

ill try it out and post my findings. 

 

 

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4 REPLIES 4
JCApp
First Poster
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Galaxy A Series

So, i am the only one with this problem? I cant imagine this...

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JAMES4578
Superuser I
Superuser I
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Galaxy A Series

Hi @JCApp  Yes there have been a few threads on Adaptive Brightness, similar issues reported on a few devices.   I have the S10 , certainly is better  after  reset.  Let us know your experience.

 

See more on these links:

 

https://eu.community.samsung.com/t5/galaxy-s9-s9/adaptive-brightness/m-p/899198#M11093 

 

https://eu.community.samsung.com/t5/galaxy-note10-note10-note10-5g/adaptive-brightness-on-note-10-is... 

 

https://eu.community.samsung.com/t5/galaxy-s10e-s10-s10-s10-5g/samsung-s10-auto-brightness-not-worki... 

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pandil
First Poster
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Galaxy A Series

I have it, too. I think it started on January or February, with Android 10 upgrd. It gets on my nerves also, so I just switch off adaptive brightness. I was hoping it would be solved with the latest update, but it wasn't 😭

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ErickMiranda
First Poster
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Galaxy A Series

In have the same problem with a Samsung S20 FE, android 11, my adaptative brightness is blinking. Many thanks for your tip. The first tip that it could be fix my problem. The first minutes and all seems ok.

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