S20 FE Amoled screen is not truly black [issue]

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williamtavares

Senior Member
Jan 23, 2013
284
51
São Paulo
I noticed at bedtime that this phone's panel didn't get those deep blacks we come to expect from samsung panels, i remeber in 2012 i had the same issue with my galaxy S2, i can see the black being lit like it was an LCD panel.

black image 0% brightness at 60hz = i can clearly see the display back-light.

black image 0% brightness at 120hz = it behaves like an amoled panel should, i can't see a thing.


The phone is running the latest software, oneui 3.1 + May patch.

Is this a known software bug? I think i'll return this phone because of this.
 

blackhawk

Senior Member
Jun 23, 2020
9,922
3,938
Samsung Galaxy Note 10+
Try clearing the system cache
Try a hard reboot
Doesn't it have variable display frequency depending on what you're viewing ie static picture vs scrolling?
Could that be coming into play?
A glitch. You can't clear the graphic driver data but maybe the apk that controls the variable rate if separate from that.
You haven't done any major firmware upgrades, right?
I haven't play with the higher refresh rate displays, pretty much love my 10+/Pie.

Otherwise...
If you're within your return window, do so.
 

williamtavares

Senior Member
Jan 23, 2013
284
51
São Paulo
Try clearing the system cache
Try a hard reboot
Doesn't it have variable display frequency depending on what you're viewing ie static picture vs scrolling?
Could that be coming into play?
A glitch. You can't clear the graphic driver data but maybe the apk that controls the variable rate if separate from that.
You haven't done any major firmware upgrades, right?
I haven't play with the higher refresh rate displays, pretty much love my 10+/Pie.

Otherwise...
If you're within your return window, do so.
phone came already running latest software, i got it 3 days ago.
 
Nov 13, 2016
11
3
big retail store.
maybe some calibration issue? however someone tested on his device and had pitch black on both refresh rate so i think thats a faulty panel.
I've not personally used an S20 FE , but am a samsung user myself.

it should be pitch black.

are you sure the picture was absolute black and not slightly gray ?

if it was an absolute black image , the screen should not emit no light at all irrespective of what brightness you put it in , since it is black.
 

williamtavares

Senior Member
Jan 23, 2013
284
51
São Paulo
I've not personally used an S20 FE , but am a samsung user myself.

it should be pitch black.

are you sure the picture was absolute black and not slightly gray ?

if it was an absolute black image , the screen should not emit no light at all irrespective of what brightness you put it in , since it is black.
yeah i used different sources for this, including some apps.
i had many amoled display phones before, this was my first samsung phone since the s2 i had in 2012, bummer.
 

ivan290

Senior Member
May 9, 2012
628
152
www.youtube.com
I got the same issue. It seems to be a software issue, because it only happens in always on display. If I open a black image the screen comes completely black. Weird bug.
 

prc001

New member
Sep 15, 2021
2
2
I am using the samsung galaxy A 52s 5g.
It has the exact same issue, the AOD and lockscreen behave like a LCD panel with a yellowish tint when the refresh rate is set on 60Hz.
Though everything else is fine, other screens and apps.
If set at 120Hz then AOD and lockscreen behave normally.

I don't what this is.. maybe samsung did not optimise their 60Hz setting properly.
 
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blackhawk

Senior Member
Jun 23, 2020
9,922
3,938
Samsung Galaxy Note 10+
I am using the samsung galaxy A 52s 5g.
It has the exact same issue, the AOD and lockscreen behave like a LCD panel with a yellowish tint when the refresh rate is set on 60Hz.
Though everything else is fine, other screens and apps.
If set at 120Hz then AOD and lockscreen behave normally.

I don't what this is.. maybe samsung did not optimise their 60Hz setting properly.
There are color calibration/display issues on all the variable rate AMOLED displays it seems to some degree.
Lol, set to 120hz and be happy.
 

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