yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Rox628:
Maybe the power saving mode is manipulating it?

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[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] j_r17ca:
Its the power saving option. Its the same in s3. Go to powrr saving settjngs and uncheck the auto dim or auto brightness or something like that. It happens when power saving is on. I cant remember the exact optin coz im using custom rom on my s3.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] vinuneuro:
This happened in the S4s I used in the store as well. Manual brightness, and auto screen adjust disabled, power save off. Opening certain apps like chrome and the stock browser causes the screen to dim a bit. Nothing I found prevented this behavior. It's annoying since I already find the screen to be a bit dim.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] burningembers:
Notice this as well, super annoying. I've disabled power saving, auto screen adjust, etc. and even non-dynamic modes do it.

Hopefully this gets fixed by kernel mods in the future :)
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] gzrecoil:
Same problem, even with brightness max with auto off, decent charge, and off power saver. Very annoying
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] sam2c:
Its built into the Snapdragon, its called BRITE and seems works independantly of the auto screen tuning that the S4 has. The HTC One has it and its much more intrusive. I wrote a long winded post about it in the HTC One forums. You have to wait for devs to come out with kernels to disable it, much like they did for the Tegra 3
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] vinuneuro:
The HTC screen is bright enough that it doesn't matter. Samsung phones need to be at max brightness to be any good.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] sam2c:
Just an FYI, if you put the screen on auto brightness, it reaches a higher maximum brightness outdoors as apposed to the slider. Samsung did this to keep the screen from overheating when set to max all the time.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] vinuneuro:
I want full brightness indoors too. :)
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] sam2c:
I see. If you have the slider on max all the time, i think the screen will just dim eventually because of heat. Might want to stay away from the S4 then cus you might have screen problems down the line :/
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] stevehkim:
If you havent go to settings display screen mode and use something other than adapt display. No more adjusting.

ATT S4 Rooted. Beastin.

4.2.2
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] ZaZu90:
I have the same problem. [MENTION=4317660]stevehkim[/MENTION] that doesn't solve the dimming issue.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] pezlomd:
Guys ur phones are fine.. go into display settings and scroll down and uncheck 'auto adjust screen tone' its meant to save power by making whites less bright. When disabled I cant see any dimming
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] mactruck:
That doesn't work.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] pezlomd:
When I have the option on and I open Chrome a mediately see a slight dimm but when I un check that option and I open Chrome there is no dimming.. Not really sure what's going on then
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] theraker007:
did you guys try downloading dolphin or another browser and see if the problem is in third party apps?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] ZaZu90:
Doesn't work.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] nikojov:
same here

got my s4 last week and i have been experiencing the same thing since then.. auto brightness is set to manual (max),

auto adjust screen tone and adapt display is unchecked. but when i'm using apps (browsers, mx player) the screen still dims randomly..

hope someone can help us fix this or teach us how to disable it if its a feature..
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] nikojov:
Additional observation, the slight dim on my screen occurs more often when the unit is warm or under heavy usage.

Can anyone confirm this?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] flipq88:
Im not sure but I think mine is as well. Although it dims and then brightens up randomly

Sent from Flip's Galaxy S4
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] nikojov:
I guess this is normal to all s4 and we can't find a way to disable this.. I think I have to get used to this :mad:
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] flipq88:
God I hope someone finds a way, I hate this dimming screen

Sent from Flip's Galaxy S4
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] greekunit690:
Check in display options where it says screeb mode... adapt switch it to standard, dynamic or movie and scroll down to more settings and uncheck auto adjust screen tone. Youre welcome
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] flipq88:
If you read that has been suggested like 10 times already and it doesn't work.

Sent from Flip's Galaxy S4
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] nikojov:
Yeah.. that doesn't work, the thing is the slight dimming only happens when the phone is getting warm ( just an observation ). Maybe the brightness settings is being overridden for overheating prevention? Hahaha i don't even know if such feature exists in our smartphone.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] chasdl:
That is exactly the behavior I've been getting on my new Galaxy S4.

I don't think it's a terrible idea generally, but under certain conditions this behavior causes problems and is very annoying. For example, if I'm using Google Maps while driving in my car, I need the screen to stay in full bright mode in order to be able to see it. I have to repeatedly tap the screen while driving to bring the brightness back up to a useable level, which is very irritating.

What we need is a setting that will disable the screen dimming when the power is plugged in. There is a setting that prevents the screen from going completely black when the power is plugged in ("Settings | More | Developer Options | Stay Awake"), but a comparable setting that prevents screen dimming when the power is present would be very useful.

I had a previous phone (Windows 6.5, not Android) that had a similar problem. It was solved by an app that someone wrote that disabled the screen dimming when the power is present. Does anyone know of such an app for the S4?

Best....
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Slade8525:
There is a thread dedicated to all of the S4 screen issues/questions etc.

im trying to address them at the software, hardware, and kernel level so it would help immensely if everyone would post in there; im trying to replicate every issue and variable, make a spreadsheet, and hopefully address it with a correctly calibrated screen option and a correctly functioning low power mode to save battery as well as a faster/better auto dim that DOESNT change screen colors or flicker etc.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] zigolo:
FYI if you you use Firefox there is no dimming. I prefer Chrome but the dimming thing is driving me insane...
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] DuffmasterFresh:
The dimming is very annoying, happens to me using the camera, photo gallery, snap chat, instagram, and sometimes even facebook messenger. when it's dark out and when the screen is dim, sometimes I see these barely visible black lines on the screen like an old TV set, not sure why and I can't easily duplicate the issue.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] sambosa:
Me Too .I have it

I realised this after a week from purchasing my new GS4 and it is extraordinarily annoying and happens more often when the device is warm:crying:
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] calum96:
I'm also getting this, annoying the hell out of me :/
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Slade8525:
this is normal; search its been covered. its power saving and screen saving related to touchwiz.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] calum96:
Don't suppose you have a link where I can read about it bud? Do you know if there's anyway around it?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Slade8525:
only way is custom kernel (ktoonsez is the only one that you have some control over it)
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] calum96:
Think over found a fix, I went into power saving mode turned it on then unchecked screen power saving, then turned it off againand it seems to stay at full brightness, maybe it was keeping screen power saving on even though power saving was off?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Cusa:
I have this issue pretty much whenever I use my phone and I have disabled/removed everything that's not needed and it still does it.

Sent from my SAMSUNG-SGH-I337
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] calum96:
Same here until I disabled it in power saving menu, think for some reason it still does it even if power saving if off
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] STEMBOB:
So is this a software issue , does it happen on every galaxy s4?

Will there be a fix?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] kambalache:
Hi everyone!

First of all I want to apologize about my english :p

I recently discovered a message in the brightness settings. It says: 'Max bright reduced for preventing overheat issues'.(I can't attach the screenshot cuz I'm new here, sorry.)

After a few minutes without using my device the message dissapeared and the brightness was at the maximun again.

Did you see it previously on your devices?

I plugged my device to charge it when it started again to dim the brightness. I think it's all about the overheating.

Best regards.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] nanookofthenorth:
This issue was driving me crazy also and I couldn't believe there has not been a simple solution offered. Here are two solutions that have worked perfectly for me.

Stay Awake by Fluffy Delusions

Stay Awake gives you the option to stay on when plugged in or all the time, perfect for mapping and navigation, and also a toggle for on/off option in the notification tab. Nice feature.

Wakey by DoubleP

Works well but no options to stay on when plugged in.

Both worked perfectly without issues on rooted AT&T S4 SGH-I337 (4.2.2)
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] NATA8986:
I think, this little trick actually helped,

Thank you!
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] the.e:
Have the Dimming Issue as Well on 3 Different S4's

I had the same issue with my S4. I also turned off all the auto display settings and it would still just haphazardly dim and brighten with no rhyme or reason. Primarily in Chrome, but also tested it in other browsers, SMemo and other apps. I triple-checked the display settings, turned off eye tracker, did a complete wipe/ hard reset, all to no avail.

Originally I was worried I had a defective unit. However now I believe it’s a pervasive issue with S4’s because I’ve exchanged 2 so far (on my 3rd), from 3 different cities (trying to avoid bad batch), and unfortunately the issue has been present in all 3.

I went over the issue with a Samsung tech rep and they have no solution nor have the issue documented.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] bigg8k:
Yess, this is working for me!

At first I just unchecked the 'Screen power saving' but it didn't work.. Then I went back and unchecked CPU power saving and Turn off haptic feedback and boom! - no more dimming! At least for now :)

So uncheck everything in Power saving mode :) Hope it helps others!

EDIT: Actually it only worked for about two minutes.. -.- Sorry bout that..
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] calagroove:
My s4 is heating less and has not dimmed . I think is cause i unchecked gps.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Spewy1:
This thread has gone quiet, has anyone found a solution to this as yet? Other than this, I am so happy with this phone. Why does every phone have to have a problem?

One day please make the perfect phone! I don't care which manufacturer, just get one working perfectly!
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] bo8:
I'm on MDJ and don't get any auto dimming of any sorts. Auto brightness is off, brightness controls about 1/3 brightness (indoors), but Power Saving mode is on with all three options on.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Ryan87B:
S4 Brightness dimming

I resolved this annoying problem by rooting my phone and installed an app for changing brightness! Simple like that!
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] bigg8k:
Any non-root solutions please? This is getting on my nerves!
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Spewy1:
+1
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] bo8:
Try the GSam Screen Dimmer app?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Barnel:
Which app do you use?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] ian1:
The problem is under display. Uncheck the adjust lcd option. It dims whites
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Spewy1:
LCD option?? Can't find it.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Aitch:
So did anybody find a genuine fix for this?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] aliendna999:
No

Althoug enable power saving, disable screen saving, then disable power saving again seems to do the trick ;)
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] abudgx:
Dimming Problem

Hi,

Months ago I have the same problem with dimming.... I search all over the place and found no solution even when I got to read this thread... So, I decided to write my own app.

I search this thread back to see if I could help you guys and could not find it... until today... :)

I would appreciate if you could give my app a try. Even if you may have found a workaround or just live with it... ;)

It's an easy to use application that allow you to manage your screen and can allow you to stop it from dimming. :good:

It can be configured for specific apps also. Please give me your feedback!

Play Store Link:

https://play.google.com/store/apps/details?id=com.synetics.stay.alive

XDA Thread if you have comment and suggestions:

http://xdaforums.com/showthread.php?t=2478471

Thanks!
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Aitch:
Sweet! Will give it a try! Thanks!
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] abudgx:
Give me your feedback when you do! :)
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Aitch:
Dude, from what I can tell so far, I don't think it works :(
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] abudgx:
Stay Alive! Help.

Hi,

It's probably a configuration issue.

Have you selected "Always keep screen Alive" and unchecked "Stay Alive! but allow screen to dim" ?

You should get a red lightning bolt if unplugged and the screen should not dim. Make sure you have not check "Keep screen Alive for selected apps" to make this first test.

Let me know when you tried and what is the result.

aBud

-

Quick Tutorial

--------------------

Stay Alive! has 3 modes.

1. Keep screen Alive on AC/USB (Will only keep screen on if it is plugged to a power source)

2. Always keep screen Alive (Will always keep screen alive. Unless you ask for specific apps and that you are not in one of the ones you selected)

3. Pause Stay Alive! (On pause not active)

All these 3 modes have options that depend on theses modes:

1. Keep screen Alive for selected apps. (If you check this, the screen will stay on base on the mode selected)

Select applications that will Stay Alive! (Apps for which you want your screen on, if you check the option above)

2. Do not Stay Alive! when in a desk dock (Will put SA! on pause when you put it in a desk dock. Useful when you run your nightstand clock and put your device on your desk dock)

3. Do not Stay Alive! when in a car dock (Usually disabled if you want your device to stay on when you plug in a car dock and run your favorite GPS!)

4. Stay Alive! but allow screen to dim (Unckeck this to prevent the screen to dim... fix the dimming problem)

5. Auto Pause Stay Alive! (No mather what the mode or the option is. If you forget SA! on and leave your device unattended. It will Pause SA! when your battery is lower and the minimum % specified)
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] mhannigan:
Pezlomd is absolutely correct. If you aren't seeing the same behavior on your phone then there is either something wrong with it, or one of your settings isn't as he described.

Unless your screen has some sort of hardware problem, the dimming in that particular case only happens when you have the auto adjust screen tones selected.

Mike
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Aitch:
Dude, I don't want to keep the screen on all the time - I want to stop it dimming slightly when I use it
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] abudgx:
If you configure it to SA! for specific apps, it wont dim in these apps and as soon as you go back in your launcher it will timeout like usual.

1. Select mode 2 always ( it will be always but for specific apps only)

2. Select your apps like favorite browser

3. Check SA! for specific apps exception

4. Uncheck allow screen to dim

This way if you are in a selected app the screen is on and no dim.

When your finish and press the app button to go back in your launcher the screen will dim and timeout like usual.

I will soon have an option to automatically turn SA! off based on proximity sensor. when the phone will be in your pocket or face down on a desk it will pause SA! and let the device sleep. Let me know id this could me of use to you.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] bigg8k:
I think he means that he would just need an app that could stop the dimming all at once, so the screen is always on with full power, from when he push power button till he push powerbutton again or the phone times out.

I know that's what I need.. Not an app that have 5, og 10 or even 20 features and need to know in which apps the screen should stop dimming.. It's not just one or two apps, its all over on my phone, even when just showing start screen it will dim randomly..

All we need is a Dimming ON/OFF app :) Simple as that..
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Aitch:
Okay I'll try that - hopefully it works and yes, please do add those features you mentioned!

But like the dude above said, we need a simple, all encompassing solution that works out of the box!

I think the problem might be due to some screw up with the S4 software/firmware. It seems that something is going wrong with the adaptive screen or power saving options, so that even when they are turned off, they are still actively running?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] bigg8k:
+1.. Exactly my thoughts.. So f'ing annoying man.. -.-
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] abudgx:
Hi,

While I do understand that we should have a permanent fix I do remember that my S3 is doing the same thing as my S4. I'm not too confident that it will get fixed anytime soon. I wonder if the note 3 has the same limitation.

I know as a developer that we can get the device to stay awake but it seem impossible to know if the user is active or not. That makes it impossible to implement an inactivity timeout and release the lock on the screen.

That is why I made Stay Alive! I rather have to close my device manually than have it dim all the time on me. That is why I suggest you to configure it to always Stay Alive without dim and when you put it away, just push the power button. Stay Alive is also made to disable itself when the device is closed, so it wont keep your device awake if it wakes up after you receive a notification.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] S.Y.K:
(sorry for my english)

Hi

Thanls for the application dude

It works fine

Unfortunately note 3 has the same limitation too !

But your application works great on galaxy note 3

Thanks alot
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Aitch:
I did as you suggested and it still doesn't work dude. I placed Plant vs Zombies 2 in the apps and it still dims as usual when I play. :(
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] abudgx:
There seems to be 2 problems. The dim that people experience when they are in an app and that their display timeout is about to expire after inactivity and the dim that occurs when playing a game for a long period of time.

I set my S4 to 15 seconds timeout. Started Plants vs Zombies 2 (without Stay Alive in memory) and my screen did not dim at all. I tried it over 15 minutes plugged and unplugged.

What is you device? How much time does it take before it dim? What is your display timeout value?
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] bigg8k:
The dimming on my device is not caused by inactivity or opening a certain app or game, it happens very random and it just a very small dim but it's ****ing annoying none the less. My display timeout is set to 10 mins.

I'm aware that a dim is bound to happen ten seconds before my display times out as it does on most devices but this is something else, as somebody wrote earlier it seems to be a 'leftover' from the power saving mode. I just want to be able to control my device and not have Samsung decide if I want to save battery or not. -.-
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] abudgx:
If it's just a leftover from the power saving mode then maybe flashing a custom rom would clear the issue... You would have to find out if users with custom roms have this dim problem. I have an S4 on stock rom here in Canada and do not have this problem...

If someone finds what causes the screen to dim and if there's a way with Android API to prevent it... I could create something to prevent it... I do not have a device to test it or reproduce the problem...

If it's related to Qualcomm BRITE technology, then we would need the SDK for their BRITE API to prevent this problem...
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] alesa1988:
This should be relevant.... See picture
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] Ryan87B:
You must root your S4 and after you do that, install an app from Play Store named: "RootDim [root]"

At least it worked for me, but now I don't have this phone anymore.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] 0x6A7232:
Ah, that worked perfectly, thanks!

Link for those who are in a hurry: (app used to be called Superior but is now RootDim)

https://play.google.com/store/apps/details?id=mobi.pruss.superdim
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] megamanDJ:
It's throttling

I'm surprised to see how long people had to wait to find an answer for this with so many people out there who are familiar with this. What is happening is the CPU cores are generating heat at such rapid intervals that it triggers a throttling system Command to temporarily reduce the screen's intensity in order to avoid hardware damage.

The throttling happens so sporadically because of just how suddenly the cores can drastically spike in temperature during light and heavy use, but this effect can be seen to happen a lot more during heavy use (like long internet browsing times).

Don't quote me, but I'm almost sure it's kernel related and may or may not be adjustable or even eliminated on the stock kernel.
[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] alesa1988:
Correct... See my post.... It says it on the phone itself. Best not fiddle with whats clearly a security feature.