Phone suddenly gets dimmed occasionally - Xperia Z4/Z3+ Q&A, Help & Troubleshooting

I am using Z3+ single with Nagasaki 1.5 ROM
Especially when web surfing with Chrome, phone suddenly gets a bit dimmed(and go back to usual brightness again).
It is not the same as hot-phone-dimming, cause it does not restrict to change brightness back high or dimming smooth like the heat related dimming.
It dims right away, not like the smooth-sony-style.
Does anyone has same problem, or know how to fix it?

I have it, and I tought that my screen is buggy, I'm using stock rom tho, how can we fix that, Adaptive brightness is turned off?

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.

Nexus one screen gets really dim

Please, any input is useful. ):
I just bought a nexus one the other day, and i think I was scammed. THe power button works fine, but occasionally, the screen would get super dim. It doesn't black out because I can faintly see all of the icons and menus, and I can tap them. ALso, its not automatic brightness, because its horribly horribly hard to see. Pulling the battery (sometimes) fixes this problem.
I'm currently running Kang-o-rama with SP2.
Has this ever happened to anyone? If so, how did you fix it?
It does sound its the auto brightness. If you're outside and its dims it is very hard to see. You the default android power widget to test it. It has brightness toggle on it. Full /auto/dim/ and basically the middle.
I'll take a picture of it once my dad comes home, but I tested it last night if it was autobrightness.
I waited for it to dim, then went into settings, disabled autobrightness, and put the brightness all the way up. It was still super dim, and didn't return to normal until I pulled the battery.
I would look for support in the thread for that rom. Or flash another rom. Sounds like it is just a bug in your rom.
I just installed a Miui rom hoping it'll fix it (cause I was using cm7 based roms) and it worked for a while.
Now it began to Flicker and finally turned off. It'll ring when phones call it but nothing will show on the screen. I'll pull the battery but this time nothing shows up (though it vibrates indicating it turns on).
I know this is a hardware problem now, do you guys know what part it is?
Please, any input is appreciated.
Sent from my HTC Glacier using XDA Premium App

Bad Brightness issue Z1S

I need help with the screen on my Z1S, for some reason the display keeps flickering like mad, it's a brightness issue i think, it keeps flickering dimmer and brighter over and over again, i reset the phone with flashtool using a ftf but it is still occuring, 90% of the time? I have no idea what it could be. I even turned off auto brightness and it still occurs

GALAXY A30 Screen brightness problem

Hi everyone, I bought a Galaxy A30 a few months ago, and I have noticed after playing Call of Duty that when playing the screen lowers automatically its bright from one moment to another. At first I tought it was some game related bug, because when lowering the notificacions panel the screen bright still marks the top level. After a few days I noticed this started to happen in another apps like instagram, suddenly the screen lowers like 30% of it brightness and I try to move the brightness bar to a lower level and go back to full to see it it goes back to normal, but even with the bar at full it stays like that, darker, with a very clear difference from the full bright of five minutes ago. I know there is an option for auto brightening wich was always disabled, and if it was caused by that option, the brightness bar should also lower and not staying at the top as it does now.
The thing is that whenever this happen, I get used slowly to the new amount of bright and cannot tell if it goes back to normal or WHEN it goes back to normal. If it does, its pretty gradually because I dont notice it. There seem to be nothing in common between the cases, this doesn't happen when charging or something like that, happens anytime..
Does anyone knows what can be causing this?

Display gets very dim sometimes

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?
Click to expand...
Click to collapse
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

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