Display gets very dim sometimes - Samsung Galaxy S20 FE Questions & Answers

S20FE 4G (Exynos)
Sometimes, especially under load and when the phone starts to get warm, the screen will automatically go to half brightness, with no way to go higher than that. When i move the brightness slider from mid to the max the brightness doesnt change at all. Auto brightness is off, adaptive battery too. It doesnt go away if i lock the screen or even after a reboot. It only does so when it feels like it. I've also tried clearing the cache from recovery with no effect. This all started a few updates ago, with the april 2021 patches, and didn't go away.
Anything else i can try besides formatting the entire phone?

skrftb said:
S20FE 4G (Exynos)
Sometimes, especially under load and when the phone starts to get warm, the screen will automatically go to half brightness, with no way to go higher than that. When i move the brightness slider from mid to the max the brightness doesnt change at all. Auto brightness is off, adaptive battery too. It doesnt go away if i lock the screen or even after a reboot. It only does so when it feels like it. I've also tried clearing the cache from recovery with no effect. This all started a few updates ago, with the april 2021 patches, and didn't go away.
Anything else i can try besides formatting the entire phone?
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This is due to the temperature sensor forcing an override of the display brightness. It's maddening. Trying to use this phone outside in the sunlight for more than a few minutes renders it unusable. There are many threads about this all over the net but no solutions.
I've tried turning off all sensors re the new Developer Settings button. Tried using Game Booster to disable temperature monitoring and max performance. Tried everything I can think of.
Is there a way to disable the temperature sensor through root or mods or some other way? I'm literally about to sell this phone because I use it a lot outside and I simply cannot use it.
https://eu.community.samsung.com/t5/galaxy-s20-series/s20-screen-dims-in-sunlight/td-p/1694669

Related

[Q] Backlight keeps fading and coming back??

I bought a Tab P1010 a fortnight ago. Generally been happy with it, but I've noticed something thats begining to annoy.
Just prior to going into standby, the backlight level drops slightly before going off. That seems to be the normal way things work.
However, on mine, the level goes to that stage randomly. Touching the screen may bring it back up after 5 seconds or so, but not straight away. And it happens even when I'm scrolling the screen and there has been activity going on.
Any idea?
Or have I got a return on my hands?
do you have "auto" set on your brightness?
I find when i have brightness set to auto it can go duller or brighter seemingly at random (particularly irritating if im reading)
i mostly manage my brightness level myself
Dont know if this is related to your issue ... good luck
dingoo12 said:
do you have "auto" set on your brightness?
I find when i have brightness set to auto it can go duller or brighter seemingly at random (particularly irritating if im reading)
i mostly manage my brightness level myself
Dont know if this is related to your issue ... good luck
Click to expand...
Click to collapse
lol I feel such a fool!
I was fully aware of the auto back light setting and had already set it to the unchecked.
However at the weekend, I did a full factory reset. All settings had gone. However, it does show up how useless that setting is as the changes seem very random!
Cheers for the reminder.

MeMo Pad ME572c fluctuating brightness

Just picked up an ME572c and I'm very impressed for the price. However I have noticed the screen brightness levels keep fluctuating as if the light sensor is constantly detecting different light levels.
Has anyone else experienced this?
madgibbon said:
Just picked up an ME572c and I'm very impressed for the price. However I have noticed the screen brightness levels keep fluctuating as if the light sensor is constantly detecting different light levels.
Has anyone else experienced this?
Click to expand...
Click to collapse
Hi,
i notice this too, but that can be related to the power saving mode. Plz turn it off and check the settings in detail. Maybe that helps.
Further inside the developer options there is another option to configure the auto brightness.
You can change the behaviour from dynamic to immediately or slow mode and active an onscreen lux, gain and brightness value display.
Btw i am not satisfied with the auto control, as for my taste the brightness is still too low in a less lighted room. Sensor is reporting 0 lux already with a brightness of 14 which would be ok for a really dark room & night but not at daytime.
What is your experience?
I tried playing with power saving mode and the auto brightness controls in developer options. While I could reduce the fluctuations, I could eliminate them completely. Unfortunately I found it too distracting and returned the device earlier today. It's a shame as everything else was quite impressive for the money.
I also found the fluctuations annoying, my solution was to turn the auto-brightness off. Honestly I dislike auto-brightness on any device, it was also one of the first things I turned off on my laptop.
I am using Lux app now and raised minimum brightness at 0 lux. Thats ok for me now.
tycoo said:
Hi,
i notice this too, but that can be related to the power saving mode. Plz turn it off and check the settings in detail. Maybe that helps.
Further inside the developer options there is another option to configure the auto brightness.
You can change the behaviour from dynamic to immediately or slow mode and active an onscreen lux, gain and brightness value display.
Btw i am not satisfied with the auto control, as for my taste the brightness is still too low in a less lighted room. Sensor is reporting 0 lux already with a brightness of 14 which would be ok for a really dark room & night but not at daytime.
What is your experience?
Click to expand...
Click to collapse
Just bumping this to confirm this works and so that others can see. I used Developer options as well (before I found this post) and noticed the instant setting works best.
One more setting to also double check... Make sure that in developer options under auto brightness that you disable allow change gain...
Even with everything disabled it appears as if something still is changing the display. I particularly see it with something like a reddit browser when I'm viewing pictures. You click the pic, it loads and displays and then 1-2 seconds later the display adjusts based upon what is being displayed. Depending upon the picture it can be pretty annoying. I may have to root and start poking around to find out what is causing this.
with the lollipop update this issue is fixed for me.
Is lollipop really solve the problem?
muiriddin said:
with the lollipop update this issue is fixed for me.
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Click to collapse
Hello!
Im on lollipop, but the problem you had, still occur at me.
Did you noticed this problem, since you on lollipop?
I have the same problem. When i read, or browsing, the brightness changes in 2-3 steps.

Is there a way to limit screen maximum brightness boost in Auto Brightness mode?

Hi there!
First my question - Is there a way to prevent the Note 8 from entering the RED area of the screen brightness slider when in Auto Brightness mode?
Now my reasons for this question, should you care of course
I am a quite devoted Pokemon Go player for over a year now, which has lead to a significant screen burn-in on my previous S7 Edge. Now with Note 8 I am more careful in how I play the game. I have started by making the game run is immersive mode, I tend to deliberately switch between apps to prevent same game elements stay on for too long and finally, I am using the phone with the screen as dim, as possible without causing me difficulties to see it.
HOWEVER, I would like to use Auto Brightness as it actually learns my preferences quite well with one exception - whenever it sees a direct sun beam, it automatically boosts into the red zone, even is the bright light has been there for a second. OK, I admit that the screen brightness is amazing in direct sunlight, staying saturated and crisp and also the system's reaction to a spray of bright light is really fast, except for the fact that...I don't want it.
It's not about saving my battery, I have a 20 000 mAh battery pack always with me. I only want to prevent my screen from burn in and overall degrading faster than normally.
Thanks
I'd like to know this as well.
Same!
i suppose there is memory function, when u drag the slider back to the illumination level of ur choice, it remembers the next time and limits the brightness. some amount of patience is needed till the system 'learns'
snakez23 said:
i suppose there is memory function, when u drag the slider back to the illumination level of ur choice, it remembers the next time and limits the brightness. some amount of patience is needed till the system 'learns'
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Click to collapse
Yes indeed, some time is needed for the system to fully learn the preferences

Auto brightness issue

Anyone else having issues with auto brightness after the pie update? My phone sometimes does not change the brightness automatically when I move from a bright to dark environment until I turn the feature off and on again.
poppyjay said:
Anyone else having issues with auto brightness after the pie update? My phone sometimes does not change the brightness automatically when I move from a bright to dark environment until I turn the feature off and on again.
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Click to collapse
go to a dark place slide the brightness to desired level. no go under a bright ligh then shut it off and see.
Just tried this. Sometimes it works and sometimes it doesn't. When it doesn't I still have to turn it off and on again for it to work again.
it's the new adaptive brightness..... you set the desired light in each situation over the next few days using the slider (adaptive ON)... it will adapt to your preferences in different situations.....
edwardob said:
it's the new adaptive brightness..... you set the desired light in each situation over the next few days using the slider (adaptive ON)... it will adapt to your preferences in different situations.....
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Click to collapse
Thanks I'll give it a try.
Doesent work with my note 9 Pie...
I Flashed ota from 8.1 and later i flashed back to 8.1.
Later i flashed again 9.0 but this time not via ota. I flashed it clean via odin.
Same issues with adaptive brightness :
1. It does NOT learn my pattern. This means : I turn it darker. And later in the same spot it turns it back to the middle... Over days and days the same.
2. If you turn on the camera-app, it turns the brightness high. That is okay, i like that. But if you turn the app off, and if you are too fast for the system, it stays enlighten untill u lock ur device !
Oreo :
1. It learns my pattern from day one (!). I turn it darker. Later on the same spot : It stays dark ! Perfect
2. Turn on the camera app and it got brighter. Nice, like Pie, right ? Yes, but turning the camera-app off and swiping it instand away from recent apps, it turns imediatly back to the normal brightness, it learned from you !
I hate it ! Pie does not work fine with my brightness preferences !
Other user in other forums have the same issues with pie...
And there is no way around. I tryed it all. Every option and every possibility. Iam not a beginner in android.
I gave the adaptive brightness a cance of 10 Days, but every day it learned nothing. And the Camera problem...Turn the app on and open recent apps and swipe the camera away and then go back to home. If u do it too fast (I do it every time on every phone with MY speed) it stays bright like u throw it in the sun
Same here adaptive brightness has gone bonkers for me after pie upgrade. Just like you it works when it wants to. Really frustrating.
So please guys, tell samsung that problem in the members app.
The users in our german forum did that, and i did that too.

Auto brightness working well for you guys?

I noticed that on my S10e, auto brightness doesnt work as well as it did on my Note 9.
Sometimes I have to manually turn down my brightness if I turn off the lights in my bedroom for example. Or if i turn on the lights, brightness stays on the same level. But if i turn off my phone display then turn it back on, the brightness is suddenly changed.
How well does it work for you guys?
destz0r said:
I noticed that on my S10e, auto brightness doesnt work as well as it did on my Note 9.
Sometimes I have to manually turn down my brightness if I turn off the lights in my bedroom for example. Or if i turn on the lights, brightness stays on the same level. But if i turn off my phone display then turn it back on, the brightness is suddenly changed.
How well does it work for you guys?
Click to expand...
Click to collapse
I have noticed that my S10e is slow to respond to ambient lighting
I have an S10 and to be honest it's hard to say if auto brightness is working how it should. Coming from an LG V30 this phone's display is significantly brighter and especially more apparent when using it in the dark. Even the darkest setting is too bright. I always check the level to make sure auto brightness is working as it should and I guess it is? Either that or it's stuck.
my only comment is that in totally dark room it does not go all the way down , it stays a little bit brighter than normal and than my old iphone x
talking about the s10+
Mohamad Gahed said:
my only comment is that in totally dark room it does not go all the way down , it stays a little bit brighter than normal and than my old iphone x
talking about the s10+
Click to expand...
Click to collapse
yeah same here, and the strange thing is that on my Samsung Note 9 & Samsung S7 it actually used to go all the way down in a totally dark room, but on this phone it doesnt for some reason..
It can take a bit for Adaptive brightness to learn what your favorite settings are like.
Yes, same here, I have s10 and in the dark auto brightness is near to half. Wtf?! I tried to calibrate, no chance. For sure this is a bug. If you go in *#0*# you will see it s writing uncalibrate light sensor
Devhux said:
It can take a bit for Adaptive brightness to learn what your favorite settings are like.
Click to expand...
Click to collapse
nah, on my Note 9 & S7 it worked as it should on the first day i got those phones
there clearly is a problem with adaptive brightness on the S10, anyone with the S10 who had another samsung phone previously will notice that
no, the auto brightness is trash. it sucks. it never gets bright enough even tho i've made adjustments literally daily. it sucks.
Charkatak said:
I have noticed that my S10e is slow to respond to ambient lighting
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Yup. Same here. Maybe software update will fix this soon.
Even with factory reset it still happened.
Sent from my SM-G970U1 using Tapatalk
x1tymez said:
Yup. Same here. Maybe software update will fix this soon.
Even with factory reset it still happened.
Sent from my SM-G970U1 using Tapatalk
Click to expand...
Click to collapse
I too did factory reset...at least we have tried
Different topic: I will wait for T-Mobile firmware one more day and may possibly return the device back to Samsung and keep my Pixel 2
Charkatak said:
I too did factory reset...at least we have tried
Different topic: I will wait for T-Mobile firmware one more day and may possibly return the device back to Samsung and keep my Pixel 2
Click to expand...
Click to collapse
I got my first update on unlocked version. Why return?
Sent from my SM-G970U1 using Tapatalk
x1tymez said:
I got my first update on unlocked version. Why return?
Sent from my SM-G970U1 using Tapatalk
Click to expand...
Click to collapse
First reason: I want some T-Mobile features what unlocked doesn't provide natively and may require an extra app to function, but if before return window closes, I would be able to find a 100% firmware that would work, then I may not return the device.
Second reason: I don't like the fingerprint on S10e and maybe it is somehow better than S10's implementation, I still have to be more precise than Pixel 2 and other which had the sensor on the back.
Charkatak said:
First reason: I want some T-Mobile features what unlocked doesn't provide natively and may require an extra app to function, but if before return window closes, I would be able to find a 100% firmware that would work, then I may not return the device.
Second reason: I don't like the fingerprint on S10e and maybe it is somehow better than S10's implementation, I still have to be more precise than Pixel 2 and other which had the sensor on the back.
Click to expand...
Click to collapse
Interesting. I came from OnePlus 6t, the in displayed scanner suck kiwi balls. Everytime you switch screen protector you needed to rescan your finger. Lol.
Sent from my SM-G970U1 using Tapatalk
x1tymez said:
Interesting. I came from OnePlus 6t, the in displayed scanner suck kiwi balls. Everytime you switch screen protector you needed to rescan your finger. Lol.
Sent from my SM-G970U1 using Tapatalk
Click to expand...
Click to collapse
Oh, that is not convenient at all. I think the manufacturers are pushing their limits to please customers with new designs/features which in reality hurt the quality of the devices we pay for
I have the S10 plus and the auto brightness seems to be functioning fine. Occasionally in the dark I get thrown off with how bright this screen is. The brightness setting does decrease significantly in the dark but when viewing something with a mostly white background, I have to squint until my pupils constrict to a point where my retinas aren't getting torched. In brighter environments, the brightness level seems to increase accordingly.
Hi guys,
I came across an article about this issue from Aman Jain (Valuetalk) : https://www.valuewalk.com/2019/04/galaxy-s10-auto-brightness-no-issue/amp/
Facing Issues With Galaxy S10 Auto Brightness? Do This
Aman Jain Aman Jain
April 3, 2019 11:42 am
Samsung Galaxy Note 10E
rieo / Pixabay
Galaxy S10 auto brightness
rieo / Pixabay
We have already covered the issues with the proximity sensor in the Samsung Galaxy S10. Now, it appears, one more sensor in the Galaxy S10 is not working as it should. Several users are complaining that the Galaxy S10 auto brightness or the ambient light sensor is not working perfectly.
Galaxy S10 auto brightness – what’s the issue?
Affected users have raised the issue on social platforms and Samsung’s product forums (first spotted by tech site PiunikaWeb). Users complained that the brightness level does not automatically come down in low light. So, they have had to do it manually, but it remains at the set level even when the light is good.
“Sometimes I have to manually turn down my brightness if I turn off the lights in my bedroom for example. Or if i turn on the lights, brightness stays on the same level. But if i turn off my phone display then turn it back on, the brightness is suddenly changed,” one user said.
Further, users also say that with adaptive brightness turned on, the screen goes dark when facing the sun. “White highlights are bright blue, and all colors are distorted. It’s unusable. Spin back around or go into the shade, and the screen comes back to normal,” one user said on Reddit.
Users say that this was not the case with the Galaxy S9, where the auto brightness feature worked perfectly. One user even claims that the Galaxy S10 doesn’t even have a light sensor, instead, maybe there is some in-display sensor that needs a software fix.
“..even if you put your finger on the front camera the auto brightness still moves …..also if you acces this *#0*# you cannot find the light sensor because it’s not there like old samsung phones,” one user said on Samsung’s product forum.
Adaptive brightness to blame
Several users believe that the adaptive brightness is to blame here, and so they have turned it off. However, turning it off is not a solution, and many users agree to that.
“This is a huge problem, and should not be happening on a new phone. The adaptive brightness is a major feature of the phone, and simply turning it off isn’t an option as far as I’m concerned,” one Reddit user said.
It must be noted that Adaptive Brightness came with Android 9. It is an AI based feature that gets better with time. Meaning, it would learn from the interactions that users make with the screen brightness slider, and over time, it would customize the brightness automatically to meet the users’ needs.
Google says that in its testing for Adaptive Brightness, it found that half the test users made fewer adjustments to the slider after a week of using the Adaptive Brightness.
Not an issue, give it some time
Based on Google’s explanation, it seems, users need to give some more time for their phones to adapt to the Adaptive Brightness. Even Samsung’s explanation of the issue with the Galaxy S10 auto brightness is somewhat similar.
“From Android P, a user’s brightness setting pattern is learned, and when the user sets a specific brightness the automatic brightness is controlled to be closer to that specific brightness…… However, when you set the brightness, the brightness can be applied immediately in the short term. If more than 30 seconds after the screen is turned off and the ambient light environment changes by more than 60%, this short term setting brightness will return to the light that was relearned,” Samsung developers say.
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.
All this explanation from Samsung developers and Google could mean that the complaints from users about the Galaxy S10 auto brightness are valid, but it still is not an issue. Things will get better with time as AI learns more about users’ preferences.
Though it is not a bug, affected users do not seem very satisfied as they still have to live with inferior quality images (even if for some time until AI applies the learning).
“Not sure it’s a error to be replicated per se. It’s just an inferior looking quality of image. They will have to make the comparison to see the very obvious difference,” one user said.
ValueWalk
FYI : the brightness sensor is under the screen like the proxity sensor, located bellow the wifi / network icon. It's visible at sun light.
inkortage said:
FYI : the brightness sensor is under the screen like the proxity sensor, located bellow the wifi / network icon. It's visible at sun light.
Click to expand...
Click to collapse
There are actually two light sensors: front and back of the phone.
Unlock the device without pressing the power button and only by placing your fingerprint on the sensor.
The light sensor starts checking the environment light only in this situation

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