auto brightness too low - Samsung Galaxy A21s Questions & Answers

Since I got the a21 I noticed that when I'm out with auto brightness on it adapt to the sun but once I'm home the brightness slider goes all the way down
and pretty much stay there unless I go near a light.
Is there a way to recalibrate the auto brightness?

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[IDEA] Brightness Control for AUTO Brightness

I figured this would come along by now but for some reason it hasn't. On my iPhone I could set my brightness that the auto brightness would adjust accordingly. Because the auto brightness is generally too bright or too dark. Also maybe adding some timing controls for how long before the auto brightness adjusts. The displays in these devices suck down the battery like crazy this would help significantly.
BrandonG777 said:
I figured this would come along by now but for some reason it hasn't. On my iPhone I could set my brightness that the auto brightness would adjust accordingly. Because the auto brightness is generally too bright or too dark. Also maybe adding some timing controls for how long before the auto brightness adjusts. The displays in these devices suck down the battery like crazy this would help significantly.
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I too thought we might have seen this by now. I know there have been some tweaks in ROMs, but a slider that sets the sensitivity or the upper/lower limits would be excellent.
u talking about this? http://forum.xda-developers.com/showthread.php?t=708660
extended controls has a auto brightness controller sort of if thats what your looking for
b33zy682 said:
extended controls has a auto brightness controller sort of if thats what your looking for
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Extended controls has an Auto Brightness setting, same as Froyo Power Control widget.
What OP wants is auto setting where you can control sensitivity of light sensor.
Ok I'll try explaining again. Communication isn't my strong suite. Basically, on an iPhone you can set auto brightness, then under auto brightness checkbox you have a slider that calibrates the brightness throughout the range of the ambient light sensor. So it's still a brightness control it just works in conjunction with the auto brightness setting. Being able to fine tune the brightness throughout the range of the ambient light sensor would be a bonus because with the current auto brightness I can barely see the screen in daylight but it's not maxed out because I can still adjust it all the way up with the power control widget and the opposite is true at night, i could go dimmer at night and still see the screen clearly. Strictly copying the functionality of the iPhone wouldn't fully address this. An app would be ok I suppose but I'd much rather see a system mod. I really hate apps like Trackball alert, nothing against the author I just don't like running an additional app to address the lack of a feature in the OS itself.
Good thought
I agree completely. I'm a recovering iPhone user and the adjustable auto-brightness is a feature that I desperately miss. One of my top complaints about android.
This idea is fantastic. It's something I've been thinking about too (never knew iPhone has it though)
When indoors I sometimes find auto brightness too bright. When outdoors and its sunny sometimes its upper limit is not bright enough. In both situations I have to turn off auto.
Actually last night I noticed that auto brightness was dimmer than the lowest brightness setting. I reckon that a lower/dimmer threshold should be available too on the manual brightness settings.

Auto brightness issue , please help!

I got my new SGS2 today
And i feel like the auto brightness is way to sensetive ,
Almost every time i change angle its change its brightness
Any suggestions?
I don't use auto brightness, just set it down low manually to save your battery.
I'm kinda having the opposite problem. No matter what the light is if I'm in auto-brightness mode it always sets the display to minimum. It's really annoying. Is there a way to calibrate that?
anyone?...
i9apps said:
anyone?...
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i Don't know about the auto brightness but if you uncheck the auto brightness and place your finger on the very top where the clock is and if you slide your finger towards the opposite direction it will change the brightness of the screen .....from left to right is more brightness and right to left is less....so i think you haven't checked the auto brightness thing that's why you are getting that problem.....

[Q] calibrating auto bright control

Has anyone come up with a way for me to calibrate auto brightness? Would like to use it, but it turns display all the way down, and I like it a bit brighter. I'm rooted but locked. Thanks
There's an app called Lux Auto Brightness that allows you to set brightness at various light levels, including min brightness. I use it on my phone and works very well. Not sure on a tablet but worth a try.

Auto screen brightness -- too dim in dark environment

It works, it's just that it over compensates in the dark.
I know there is probably not much that can be done about it, just thought I'd ask.
I think the Auto brightness is adjustable.
I agree it gets too dim, but works fine in normal lighting conditions.
The brightness is adjustable, manually. I have not found any means of adjusting the bounds of the auto brightness mode. It is the low intensity limit that needs adjustment.
I would like to be able to have a feature like adaptive brightness like what's on pure Android without a third party app...
rlillard said:
The brightness is adjustable, manually. I have not found any means of adjusting the bounds of the auto brightness mode. It is the low intensity limit that needs adjustment.
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While on auto brightness tap the sun burst directly opposite the checked auto brightness. Voila!
0-50-90
But then the whole phone goes dim. We want the brightness of the 2nd screen to stay bright at all times so we can see it.
moSess said:
While on auto brightness tap the sun burst directly opposite the checked auto brightness. Voila!
0-50-90
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Awesome! Didnt know about that feature!
I find the auto brightness is a little too dim. I would prefer if it was 10-15 points brighter than what the algorithm chooses. Now I leave auto brightness off in most cases of active use
Sent from my LG-H901 using Tapatalk

What happened to Auto Brightness with the Marshmallow update

Auto brightness... What happened? It used to just work. You know, automatically. If you adjusted the slider it would snap out of Auto mode and lock to what ever you set it at. Going back to full auto was a s simple as selecting the checkbox again in the quick settings.
I don't know if it's part of Marshmallow or TouchWiz but now the brightness slider controls the automatic-ness of the brightness. So its more like a auto "range selector" or "sensitivity selector" it seems. Its more of a semi-automatic mode.
If you set it to ~50% the brightness will adjust +/- 10% around that setting. But it doesn't seem to just automatically do 0-100% on its own anymore.
Set it near 100% and it'll practically refuse to dim in low indoor lighting.
It also seems to respond to whether or not you're holding the phone. It'll get brighter no matter what (thankfully), but it will not lower the screen brightness until you put it down on a horizontal surface... Kind of annoying if you're reading and happen to walk in to a dim room and you're being blinded by your phone until you put it down and then pick it back up. I have Smart Stay turned off so that's not it.
I definitely prefer the plain old, dumb, just works, auto-brightness that I could snap on and off if I needed. Now its...complicated. Why "fix" what isn't broken. Was it confusing some people?
I tried Lux Brightness control app but I'm not sure it's really what I'm looking for. It's too much. I just want "set it and forget it" Automatic (0-100%) brightness like it used to be.
It's a feature. The brightness slider will now bias the automatic setting toward higher or lower brightness while still maintaining the automatic adjustment functionality. Turn off the automatic setting check-box to accomplish full manual control.
What ever happened to just plain Automatic? I don't want to have to mess with a slider. It adjusted the brightness fine before. I find that now it's either too bright or too dim for many situations and I'm constantly messing with the slider. Whereas before, auto was just auto.
Same problem here... It is very annoying
Sent from my SM-G925F using XDA-Developers mobile app
Interestingly, with my old s3 and now my current s6, when looking at battery usage, the screen was always about 15% and usually the second item in the list of things that use the most battery power. It was what I always loved about amoled. Now, screen is number one and comes in at ~50% after the marshmallow update. I wonder if it's because it's always so bright now? Or perhaps they've changed how battery usage is measured. Not much I can do about it. Just an a interesting observation.

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