Galaxy S5 Flickering Screen - Sprint Galaxy S 5 Q&A, Help & Troubleshooting

I have had my sprint galaxy s5 for about a year and 5 months, and have had no problems.
I am running resurrection remix m, and i seem to be having a flickering screen every once in a while.
I switch to cm12.1 ; same deal, even a stock rom has the flickering.
And I've heard that it is a hardware problem, would sprint be okay with me sending in the device for a fix, or is there any way to fix it myself?
Otherwise, I am going to be stuck with a very annoying problem for another 8 months...

Hi I also have your problem, started on 5.8.5 and now that I downgraded to 5.8.4 continue.To you fix it?

hello i'm having the same problem , did you fix it ?
i have G900P stock 6.0.1

Wahab Napster said:
hello i'm having the same problem , did you fix it ?
i have G900P stock 6.0.1
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Click to collapse
Hi I advised me to try the "Screen Filter" App from Playstore.
It creates a dark overlay and then raises the brightness and stops trembling.
Now it does it less than before.
Anyway, I've been told it's a hardware problem, not software.

Its been a while, and wanted to bring this back up front!
OK, First off, what is really going on? Screen flickering.... so many Q's, like e.g.- what color is showing up? Is is the entire screen, or just certain areas? Does this happen when phone is sleeping? ... Charging?
Also mentioned was "HARDWARE"... what was told to you, being hardware? Could be taking as a Screen, but, could be other hardware issues, such as bad gyros, modem, charging port. So again, I ask you, what specific hardware are you talking about?
OK, My case- Galaxy S5 (sm-g900p) Running the latest Lineage OS, 14.1 (built 14.12.2017) I have Screen Flickering. It has been going on for about a monthor so. It Flickers, grey/green lines over the screen. It is not completely covering the screen, mostly the last 80% of the screen area. You can still see the screen, lock or home, and does seem to be some sort of Overlay, on the screen. Sleep, Or not, and Charging or not, Locked or not, this happens. (watching this get worse over the last couple of weeks, makes me feel I need to fix this soon!)
Plus, good note here, sort of....in the last week or 2, I have gone 100% back to the latest Stock MM build from Samsung for my Sprint model. and this has not made any sort of difference to Screen Flickering.
Also, noted, that IF, on home screen or Lock screen, when it has this Flickering Overlay, IF you touch the screen, it goes away... NOT too sure what is going on yet, with this! Running logcats this week when I can, to find out what any info I can there, hopefully I can find out WHAT is really causing this....
I have just about a year on a "New" Screen. All the other boards inside, are Factory< and are well over 3 years old. I can state, that I have totally rebuilt several Galaxy S5's. So if this is in the hardware, which actual part is the issue? from what I have read, it is in the Motherboard. So this would be a complete rebuild of phone, no problem! Other than getting the Right Parts. Meaning, to many folks selling Factory parts, which they do not know what actual model of the S5, it came from.
So, any advise or help would be awesome. I would rather put $$ in this this model, than purchase anything else. I would still be money ahead.
Thanks for reading.

godofsalt said:
Its been a while, and wanted to bring this back up front!
OK, First off, what is really going on? Screen flickering.... so many Q's, like e.g.- what color is showing up? Is is the entire screen, or just certain areas? Does this happen when phone is sleeping? ... Charging?
Also mentioned was "HARDWARE"... what was told to you, being hardware? Could be taking as a Screen, but, could be other hardware issues, such as bad gyros, modem, charging port. So again, I ask you, what specific hardware are you talking about?
OK, My case- Galaxy S5 (sm-g900p) Running the latest Lineage OS, 14.1 (built 14.12.2017) I have Screen Flickering. It has been going on for about a monthor so. It Flickers, grey/green lines over the screen. It is not completely covering the screen, mostly the last 80% of the screen area. You can still see the screen, lock or home, and does seem to be some sort of Overlay, on the screen. Sleep, Or not, and Charging or not, Locked or not, this happens. (watching this get worse over the last couple of weeks, makes me feel I need to fix this soon!)
Plus, good note here, sort of....in the last week or 2, I have gone 100% back to the latest Stock MM build from Samsung for my Sprint model. and this has not made any sort of difference to Screen Flickering.
Also, noted, that IF, on home screen or Lock screen, when it has this Flickering Overlay, IF you touch the screen, it goes away... NOT too sure what is going on yet, with this! Running logcats this week when I can, to find out what any info I can there, hopefully I can find out WHAT is really causing this....
I have just about a year on a "New" Screen. All the other boards inside, are Factory< and are well over 3 years old. I can state, that I have totally rebuilt several Galaxy S5's. So if this is in the hardware, which actual part is the issue? from what I have read, it is in the Motherboard. So this would be a complete rebuild of phone, no problem! Other than getting the Right Parts. Meaning, to many folks selling Factory parts, which they do not know what actual model of the S5, it came from.
So, any advise or help would be awesome. I would rather put $$ in this this model, than purchase anything else. I would still be money ahead.
Thanks for reading.
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Click to collapse
My S5 which I bought this month was build in 4/2014 it must have sat around for a while, as the original owner only activated in in 7/2016. If you think it is the logic board, then hell replace it.. This phone imop is better, than most of the new phones out there for what I use it for..

Related

LCD Screen Defect or Software/Driver Problem?

Hey guys,
I am going crazy here, searching forums did not help me at all.
The lower section of the screen keeps flicking, and not always, what do i mean by flicking, its like the screen at the lower section keeps doing like a strange low refresh rate, and has an old imprint of some old menus. Happens especially when there is the color of gray.
Made a screenshot of the phone, no problems, there, so its not a software rendering problem, might be a drivers problem though, or a defec tin the screen itself.
Frequency is high but not always, and am unable to determine when does that happen exactly. going crazy here, is this a defect? or all touch pro's have this?
Exact explanation summary:
1CM from the bottom of the LCD sometimes flickers as if that 1CM is having an extremely low refresh rate. Mostly happens when there is light gray, but not necessarily, and a soft reset for the phone does not remove it. It happens on random!
Hey,
Yeah it happens to me too! You don't need to do a soft reset, it actually fades away if you watch it closely! I don't know what it is either, and yes it is random as you have stated! I initially thought it was an application I installed as it only started happening after that, so I did a full hard reset and its still happening! Not sure what or how, but hoping next firmware version stops it!
Cheers,
mpls-te
As it happens, that's exactly why I've logged on here today! Any ideas whta the cause might be?
OK, good to see that others have this, so am not alone here, experts here, any ideas? other touch pro users, can you please leave your statements?
I hope its a driver issue.
But from what i noticed, its like, the screen is OFF, as in blank and no back light, but somehow, the application working on the screen before you turned off the device is somehow printing something on the LCD, something that we don't see, and when we actually start the phone and its back light, that OFF LINE imprint pops on screen. Something like that.
Its completely illogical, but dunno, can't find any sense here and am going crazy
Same thing happened to me and a few others as well.
See my thread here.
What rom is everyone using?
I've noticed a similar issue with mine, except rather than something software it seems like it's the backlight for the bottom 1cm of the screen flickering slightly. I don't see any weird pixels or inappropriate screen information, just a dimming/high speed flickering of the backlight in that same regionas yours. It comes and goes. Sometimes weeks without it, then maybe 3 times in a day for a minute or two at a time. Everything else works fine and whatever screen I go to displays fine.
I'm assuming it's a hardware problem with the LED(s) that light up the bottom portion of the screen, and I'm going to use it as an excuse to get a warranty replacement somewhere near the end of the warranty when the phone's getting a little old and worn.
maxh said:
I've noticed a similar issue with mine, except rather than something software it seems like it's the backlight for the bottom 1cm of the screen flickering slightly. I don't see any weird pixels or inappropriate screen information, just a dimming/high speed flickering of the backlight in that same regionas yours. It comes and goes. Sometimes weeks without it, then maybe 3 times in a day for a minute or two at a time. Everything else works fine and whatever screen I go to displays fine.
I'm assuming it's a hardware problem with the LED(s) that light up the bottom portion of the screen, and I'm going to use it as an excuse to get a warranty replacement somewhere near the end of the warranty when the phone's getting a little old and worn.
Click to expand...
Click to collapse
Lool, evil, lets just hope that this problem DOES occur when you go to their shop for your replacement
Good idea though, might do the same thing except that i have to travel abroad to where i got the phone from to actually get the warranty working. Don't forget to re-enable stock SPL and stock ROM
It happens frequently enough I'll be able to get it on video just in case they need proof, but typically they just exchange by mail.
I just posted in another thread about this issue. I have run into the same thing a few times. The bottom portion of the screen flickers, and when i do things that have a dark gray or black screen I can see a ghost image of the left and right soft keys from my TFL3D home screen. It seems to be most noticeable when the screen brightness is set to max. To get it to go away I usually do a few soft resets, and then, if needed, i will turn off the phone and take the battery out for a while. I have never tried waiting it out to see if it will just go away on its own.
proj3ktpat said:
I just posted in another thread about this issue. I have run into the same thing a few times. The bottom portion of the screen flickers, and when i do things that have a dark gray or black screen I can see a ghost image of the left and right soft keys from my TFL3D home screen. It seems to be most noticeable when the screen brightness is set to max. To get it to go away I usually do a few soft resets, and then, if needed, i will turn off the phone and take the battery out for a while. I have never tried waiting it out to see if it will just go away on its own.
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Click to collapse
I see that everyone posting in this thread,that has their signature filled in, is using the Energy ROM. I find that very interesting.
i am having the same problems, sometimes touchflo3d will flicker at the bottom, near the edges. I also get text that can be read through other screens. Like on pocketshield i can see the left and right softkey words still at the bottom. its so odd !
P.S im on energyrom
I'm on NATF v2.2, not an energy rom. But then again, mine looks more like a hardware issue, as I've never seen any ghost images of text or softkeys, just flickering.
can somebody post screens?
maybe the same problem here...
hardreset, other roms > problem still there:-(
Same problem here and I am using stock rom!
here are 3 screens of my xda diamond pro, using latest official o2 rom and newest romeOS eng
hope you can see this prob?! same like yours?
climber1872000 said:
I see that everyone posting in this thread,that has their signature filled in, is using the Energy ROM. I find that very interesting.
Click to expand...
Click to collapse
Well, i doubt EnergyROM has anything to do with that problem, since my Stock ROMz had same problem, never got fixed with any updates HTC used to release. MAYBE some Cooked ROMs out there have this solved, if any, please let us know And my problem is nothing close to screenshots above :S
mj084 said:
here are 3 screens of my xda diamond pro, using latest official o2 rom and newest romeOS eng
...
hope you can see this prob?! same like yours?
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Click to collapse
Dude, those photos are awful, after seeing them am happy with my phone flickering, its nothing close to this.
You see, in your photos, all three of em, you some kind of shadow effect, where text of a button for example has that same text beneath it 3x6mm, that is not my case at all.
My case is as follows, IF i am on the home screen for example all looks ok, except that the bottom 1CM of the screen is flickering. If i go to another window, either a total black one or any other screen, i would still see a ghost of the old home screen, for example, and only at the bottom 1CM.
Will post photos once i get my cam back. Cheers
similar issue
my issue is kinda similar, instead of getting the bottom 1cm or so discoloration or stuck pixels, I get streaks of red or blue on my screen. I have had this happen on each version of NATF I have tried, but don't remember it happening on the stock version (which I am tempted to try again to see if that's the issue).
Could this be a driver issue?
mind is even worse than all you guys, the touch screnn dose not response, and i have the energy rom on it, before it goes wrong. it just suddenly dose not response, than i send it to HTC, they ask for 425.00 for fix.... I will just send this to Asia and get some one to fix it.
But I hope before i send it out, some one can help me here.... anyway can fix it easy!!!!
Hi all, i have the same problem, here's another topic about it
http://forum.xda-developers.com/showthread.php?t=447891&page=2

[Q] screen disaster - random tinting, solarization, turns upside down

sooo, yeah. my wife has the t959v. the screen cracked months ago, replaced it with one from ebay, works fine. a few weeks ago, it was involved in an accident and needed yet another screen replacement; ergo, back to ebay i go. installed the new screen yesterday, turn it on, all is well. for a bit.
now, the phone isn't currently, nor has it ever been rooted; pure stock tmo us 2.3.6. during boot, the splash screens and boot animation are gorgeous and perfect in appearance. the recovery menu is exactly as expected. android boots as you'd want it to, and then the display will do one of the following:
-work properly (rare)
-automatically turn off, capacitive buttons still lit, touchscreen unresponsive - turning it "off" darkens the cap buttons, turning it back on flashes the screen on for a half-second, then off, with cap buttons still lit (common)
-graphical corruption ("solarized" colors, completely wrong colors, pixel vomit in essence) (fairly common)
-screen tinting, blue most often, followed by pale yellow, then greenish, then red (almost constant)
-screen inversion - the display will show as rotated 180 degrees; grabbing a framecap in ddms shows it right way up. touches are also inverse; you have to touch where the onscreen element would be if it were displayed properly instead of where the element is; e.g. a button on lower-left will display in the upper right, upsidedown, but the screen registers the button when you touch the lower-left portion of the screen. (quasi common, equally infuriating and hilarious)
none of these problems will show up in a screenshot at all.
i can reliably reproduce any of the above by simply adjusting the screen brightness. this will, quite literally, cycle through every possible defective display mode randomly for a split-second before moving on to a different one as long as you move the brightness slider.
MOST of these issues are transient and are either fixed (temporarily) or replaced with a different listed issue if you lock/unlock the display. it feels like a hardware issue what with the solarizing and color horrors, but is acting like a software issue, considering that recovery and boot are perfect and have never displayed any of these issues. i tried gently flexing and stressing the case in areas that might be a weak connection point, but can't get it to bug out that way.
in no way am i suggesting that i didn't screw something royally in the reconstruction stage, but i tore down and rebuilt that phone 4 times with identical results, so i can guarantee it's not some loose ribbon connector or zif socket.
i beg of you, great minds of xda, what the balls did i muck up this time? any hope for a fix? are there different panels, drivers, something?
thanks in advance
OK, if your screenshots appear normal, then your phone appears to be working correctly!
or at least it thinks it is we can conclude that it isn't the rom, kernel, or anything that you can blame the phone for going screwy.
Try buying another screen??
The ribbon connector might be broken?
yeah, these were what i figured what my options were. it just seems odd that the boot process and recovery menus have error-free displays while only the full android os doesnt. oh well, i'll probably just have to make a stink about it on ebay or something.
thanks for reading
You might try a fresh flash before getting a new screen to see if it is indeed a hardware issue. If you want to try that follow the second link in my signature. You will not need to flash bootloaders since you are currently on KJ6.
lumin30 said:
You might try a fresh flash before getting a new screen to see if it is indeed a hardware issue. If you want to try that follow the second link in my signature. You will not need to flash bootloaders since you are currently on KJ6.
Click to expand...
Click to collapse
hell, warranty's void at this point anyway, right? may as well thanks much!
welp, all went well, screen was perfect through the whole heimdall/recovery process, but the problems still exist in the os c'est la vie. at least my wife's phone is finally rooted, i suppose. thanks anyway!
Have you tried opening it back up and reconnecting?
yup, 4 times, but i guess one more wont hurt
[edit]
it definitely seems to be related (if not related, exacerbated by) changes to screen brightness. turning off autobrightness has helped minimize the issue, but it still presents itself semi-often during screen-off/on events. obviously nothing useful in logcat.
zero01101 said:
it definitely seems to be related (if not related, exacerbated by) changes to screen brightness. turning off autobrightness has helped minimize the issue, but it still presents itself semi-often during screen-off/on events. obviously nothing useful in logcat.
Click to expand...
Click to collapse
That's interesting and could very well be a hardware problem with the screen. You wouldn't see that in recovery as the OS isn't loaded to mess with the brightness in that mode.
Does it do it on-demand if you mess with the brightness slider?
stephen_w said:
Does it do it on-demand if you mess with the brightness slider?
Click to expand...
Click to collapse
you better believe it does. rapid fire cycles through every color until it can't take it anymore and turns off. if i take/refresh a screenshot through ddms and poke blindly at the screen at that point, it'll still take input which is a curious, difficult game to say the least.
zero01101 said:
you better believe it does. rapid fire cycles through every color until it can't take it anymore and turns off. if i take/refresh a screenshot through ddms and poke blindly at the screen at that point, it'll still take input which is a curious, difficult game to say the least.
Click to expand...
Click to collapse
It's that Pink Floyd screen. You're supposed to drop acid & watch the wall when that's going on. LOL j/j
Given that you're on a fresh ROM & the problem persists, I'm leaning toward a hardware issue man. Sorry.
stephen_w said:
It's that Pink Floyd screen. You're supposed to drop acid & watch the wall when that's going on. LOL j/j
Given that you're on a fresh ROM & the problem persists, I'm leaning toward a hardware issue man. Sorry.
Click to expand...
Click to collapse
as fun as that sounds, unfortunately i bet i'll end up just getting my wife a used phone on ebay or somewhere similar and using this one as a development monkey. i was assuming that it wasn't something i could fix but hoping otherwise... yeah, that worked out
I just started having this problem. It wasn't too bad at first, just the color changes, but then it started not showing a screen at all. Changed to three different roms, even back to the stock non-rooted KJ6 and gave up. Keeping it on a steady brightness is the only way to minimize the color changing. I thought your thread had a solution but...
I may try opening it up and fixing the ribbon. But otherwise I'll keep using it as long as I can tolerate it until an S3 or a new Nexus.
kristoper said:
I just started having this problem. It wasn't too bad at first, just the color changes, but then it started not showing a screen at all. Changed to three different roms, even back to the stock non-rooted KJ6 and gave up. Keeping it on a steady brightness is the only way to minimize the color changing. I thought your thread had a solution but...
I may try opening it up and fixing the ribbon. But otherwise I'll keep using it as long as I can tolerate it until an S3 or a new Nexus.
Click to expand...
Click to collapse
nawp, nothing even close to a solution here i did end up buying my wife a whole new replacement phone and turned the broken one into my api10 development device. for what it's worth, yeah, autobrightness off does help a bit for when the phone is actively displaying content, but after you put it to sleep/screen off and try to turn it back on, it's a crapshoot. for a few horrifying hours, the screen was upsidedown even in recovery/boot animation and would NOT flip back to right-side-up until i ran the battery completely flat.
is no fun, 'tis truth. sorry for your troubles.

Messed-Up Display

Hello XDA,
My Nexus 5 running CM12 5.0.2 nightly will not respond to the touches anymore infact when I press the power button to activate the display it acts as if someone is touching it randomly messing all the apps that are running and opening and closing many other things.
Furthermore it displays weird and burned lines throughout the screen. It was not dropped, no water went inside the device or anything. If it helps I did install the OTA updates that CM gives us.
I have also attached pictures so you may get a better understanding of my problem.
Thanks in advance.
Saad S. said:
Hello XDA,
My Nexus 5 running CM12 5.0.2 nightly will not respond to the touches anymore infact when I press the power button to activate the display it acts as if someone is touching it randomly messing all the apps that are running and opening and closing many other things.
Furthermore it displays weird and burned lines throughout the screen. It was not dropped, no water went inside the device or anything. If it helps I did install the OTA updates that CM gives us.
I have also attached pictures so you may get a better understanding of my problem.
Thanks in advance.
Click to expand...
Click to collapse
Has this happened after you flashed a rom or.. ??
semirr said:
Has this happened after you flashed a rom or.. ??
Click to expand...
Click to collapse
Yes after I flashed the rom but not directly after. But after a good 1 month.
Saad S. said:
Yes after I flashed the rom but not directly after. But after a good 1 month.
Click to expand...
Click to collapse
Hmm I see. Well since a month HAS passed, its definetly not the rom thats causing the problem, i don't know if anything regarding the software could even be causing the problem. Its 100% hardware and by that i mean the screen, you should change it, the touch and also the display are messed up.
semirr said:
Hmm I see. Well since a month HAS passed, its definetly not the rom thats causing the problem, i don't know if anything regarding the software could even be causing the problem. Its 100% hardware and by that i mean the screen, you should change it, the touch and also the display are messed up.
Click to expand...
Click to collapse
Is it possible that a driver update could fix this, if so then how?
Saad S. said:
Is it possible that a driver update could fix this, if so then how?
Click to expand...
Click to collapse
Hmm i dont think that a driver could be the problem. And if it is i dont know how you could fix it Google it
I hate to be the bringer of bad news - but your screen is toast. Fortunately you can replace the touch and display components all at once.
http://www.amazon.com/Skiliwah-Digitizer-Assembly-Google-nexus5/dp/B00HN0U168
Here is what you need to perform the repairs - and here are the procedures for disassembly.
https://www.ifixit.com/Teardown/Disassembling+Nexus+5+Display+Teardown+-+liquid+damage/32410
Trust me, it's not that difficult. Unfortunately, it's a bit pricey ($60 for the screen and digitizer), nevertheless much cheaper than a new device or sending your device in for repairs.
Rma
Problem Solved
The screen isn't toast, neither is the digitizer. I have 2 of these phones. The parts which cause problems like this are the main board and the ribbon with the USB connector on it, which also attaches the screen & digitizer to the main board. One was showing lines exactly like this, & also no touch. I put a replacement main board in. Works great now. The other, wouldn't even turn on. I put the main board from the first phone in the second one, it still wouldn't turn on. I replaced the ribbon cable, it turns on and perfectly replicates the issue from the first phone. So now, I have one fully functioning LG Nexus 5, and another which turns on with the same problem as yours. This is good, I started out with 2 of them that were useless to me. So, it appears that your display and touch issues are caused solely by a bad main board. A replacement main board costs somewhere around $75. After swapping stuff around, I have 2 bad main boards, 1 bad USB ribbon & 1 working phone of 2. Not bad, not bad at all.

Problem on a display please help...

My s5 snapdragon version has a big problem
Sometimes when i try to turn on it the display became black...
But the light and vibrating are working and touch also!
And it come back working by itsilf...
It dosent get any signs only work or balck
Sorry for my pad english
A7med.7 said:
My s5 snapdragon version has a big problem
Sometimes when i try to turn on it the display became black...
But the light and vibrating are working and touch also!
And it come back working by itsilf...
It dosent get any signs only work or balck
Sorry for my pad english
Click to expand...
Click to collapse
We've heard of similar cases here on XDA before, sounds like a dodgy digitizer to me.
Had the same problem last year, after that I started getting these so-called snowstorms and my phone kept rebooting itself.
I ended up purchasing a new screen on eBay and was lucky enough to get a genuine one for about 70 Euros.
All went well for me, new screen's working flawlessly.
If the problem persists or even gets worse you should perhaps think about whether it's worth the money.
Removing the old display and assembling the new one isn't that difficult, there's quite a few YouTube videos out there.
If you have any further questions feel free to ask.
Edit: When did you start having that problem? I don't think it's probable but maybe it's got something to do with the ROM you've got installed. Try flashing another one (e.g. AEX Pie, LOS 15.1 or stock) without any custom kernels or boot into TWRP to see if you've still got the same issue. Play around a bit to see if the problem still persists. Remember to back up your important data. Again, this probably isn't the cause but it's still worth trying before considering to buy a new screen or phone.
James160103 said:
We've heard of similar cases here on XDA before, sounds like a dodgy digitizer to me.
Had the same problem last year, after that I started getting these so-called snowstorms and my phone kept rebooting itself.
I ended up purchasing a new screen on eBay and was lucky enough to get a genuine one for about 70 Euros.
All went well for me, new screen's working flawlessly.
If the problem persists or even gets worse you should perhaps think about whether it's worth the money.
Removing the old display and assembling the new one isn't that difficult, there's quite a few YouTube videos out there.
If you have any further questions feel free to ask.
Edit: When did you start having that problem? I don't think it's probable but maybe it's got something to do with the ROM you've got installed. Try flashing another one (e.g. AEX Pie, LOS 15.1 or stock) without any custom kernels or boot into TWRP to see if you've still got the same issue. Play around a bit to see if the problem still persists. Remember to back up your important data. Again, this probably isn't the cause but it's still worth trying before considering to buy a new screen or phone.
Click to expand...
Click to collapse
I've flashed los15.1 but the same and when i try to open twrp its black screen also but some times it work fine with no problem about 5 howrs and get the problem again so i think i must buy new display
Thank you for your reply
A7med.7 said:
I've flashed los15.1 but the same and when i try to open twrp its black screen also but some times it work fine with no problem about 5 howrs and get the problem again so i think i must buy new display
Thank you for your reply
Click to expand...
Click to collapse
No problem. Here's the link: https://ebay.to/2N7SQYO
Hope it's OK to post this on XDA.
I've suffered this issue since 1 year and last month the phone couldn't display itself anymore, my trick was to slightly twist the phone using both hands and it will temporarily enable the display, got tired of it and I went to a local mall offering mobile phone repair services, told them the issue, most of the shops refused or would just advise me to get a new screen buty persistence in telling that the screen is fine it might be just a small misalignment or loose contact and thankfully one technician listened to me and just asked if I'm willing to risk the screen being damaged and we'll what do you know he just re seated it and walla phone is alive again in fact I am typing this through my S5

Question Screen Flicker During Unlock

Every time I unlock my screen, whether it's with the fingerprint or pattern, the screen will flicker for half a second. Super annoying because it's a bright white flash.
It's not face unlock assistive lighting, as I've ensured that is turned off.
I've also tried every display setting possible, toggling things like vision comfort, comfort tone, refresh rates, display calibrations, changing wallpaper, and so on.
Really hoping this isn't a hardware issue because I'm also noticing my touches don't register all the time, unless I'm pressing the screen slightly harder. Not sure if it's my screen protector but I am left a bit concerned.
Any ideas? I've Googled this a bit and I've noticed others have the same issue but on OnePlus 6 devices for the most part, not the 9 series. If anyone has run into this before and knows a fix, I'd love to hear it, thanks!
That's how the fingerprint works. It increases the screen brightness to the max usually. It's the flaw of using that kind of fingerprint rather than sonic like Samsung. Believe it takes a picture of your fingerprint and compares vs ultrasonic gets a 3D image, the difference is in speed too, optical is faster, but ultrasonic technically more secure and does not rely on lightning conditions. I personally prefer the hardware on the back kind over both.
zymphad said:
That's how the fingerprint works. It increases the screen brightness to the max usually. It's the flaw of using that kind of fingerprint rather than sonic like Samsung. I personally prefer the hardware on the back kind.
Click to expand...
Click to collapse
I don't remember it being this prominent on my previous OnePlus devices, though. My 8 Pro did not flicker as aggressively as this one does. It's enough for me to clearly notice it, even in brighter areas; this is why I've been left with a bit more concern than usual.
Not to mention this occurs even if I use my pattern to unlock.
Not sure. Mine does the same but doesn't bother me in the least bit. If it happened at other times other than unlock would be different story.
zymphad said:
Not sure. Mine does the same but doesn't bother me in the least bit. If it happened at other times other than unlock would be different story.
Click to expand...
Click to collapse
Any chance you could try and make a video of it happening on your device? I just want to see if it's the same thing as mine. That way, I'll have a better idea of this being a defect or normal behaviour.
I know, it's kind a big ask so no rush! If you ever have time. I can do the same if anyone needs to see what I am talking about exactly.
Update:
I've noticed the issue occurs only if the lock screen is showing. If ambient display is on and the fingerprint icon shows at the bottom then the device will unlock without flickering. The fact that it's happening only when the screen is on at the lock screen, is what's making me feel like maybe it's not a hardware problem. Very odd issue...
Another update,
After doing more Googling I came to the conclusion that it's a hardware issue over software. I tried to factory reset and the issue was still present.
I couldn't update the software on the phone though. It kept telling me that there was an installation problem. I'm guessing that's because I had previously used a rooted EU boot img and a factory reset through the phone settings isn't enough to get rid of that. I'm hoping the repair center won't fault me for sending the device back with an unlocked bootloader. Doesn't seem like OnePlus would do that anyway, given how open they are with the modding community.
Once I receive the replacement of test to see if the issue was still there and will update this thread.
rickysidhu_ said:
Another update,
After doing more Googling I came to the conclusion that it's a hardware issue over software. I tried to factory reset and the issue was still present.
I couldn't update the software on the phone though. It kept telling me that there was an installation problem. I'm guessing that's because I had previously used a rooted EU boot img and a factory reset through the phone settings isn't enough to get rid of that. I'm hoping the repair center won't fault me for sending the device back with an unlocked bootloader. Doesn't seem like OnePlus would do that anyway, given how open they are with the modding community.
Once I receive the replacement of test to see if the issue was still there and will update this thread.
Click to expand...
Click to collapse
One time I sent them bricked device and they still accepted the return. Returning unlocked bootloader phone shouldn't be a problem.
What made you think it was hardware since I see other people have the same thing. Hell I had it too. I don't seem to have that problem after updating to latest firmware. Seems to be software to me.
Hope it gets fixed. I saw a thread for it on OnePlus community forum, so hopefully OnePlus knows.
rickysidhu_ said:
I'm hoping the repair center won't fault me for sending the device back with an unlocked bootloader. Doesn't seem like OnePlus would do that anyway, given how open they are with the modding community.
Click to expand...
Click to collapse
When I sent the phone away for trade in there was no mention of rooting or bootloader unlock. Just wipe it.of your info and data.
zymphad said:
What made you think it was hardware since I see other people have the same thing. Hell I had it too. I don't seem to have that problem after updating to latest firmware. Seems to be software to me.
Hope it gets fixed. I saw a thread for it on OnePlus community forum, so hopefully OnePlus knows.
Click to expand...
Click to collapse
Thinking it's hardware because my 8 Pro doesn't literally cause a white flash of the entire screen, it would just up the brightness which is normal.
And I was also noticing my touches only registered on more firm presses. Made me think it could have been a bad display panel.
Didn't want to take any chances especially while inside the 15 day return/replacement window.
rickysidhu_ said:
Thinking it's hardware because my 8 Pro doesn't literally cause a white flash of the entire screen, it would just up the brightness which is normal.
And I was also noticing my touches only registered on more firm presses. Made me think it could have been a bad display panel.
Didn't want to take any chances especially while inside the 15 day return/replacement window.
Click to expand...
Click to collapse
Yeah good plan.
It absolutely does NOT do that on mine. Only the fingerprint area gets bright, not the entire screen.
NotTheGiant said:
It absolutely does NOT do that on mine. Only the fingerprint area gets bright, not the entire screen.
Click to expand...
Click to collapse
+1 on the 9Pro
According to the OnePlus support section of the site, the progress shows as "Inspected". I assume the next step is shipping out a replacement. Hopefully it's soon, will post an update on the new unit.
Thanks for letting me know you guys aren't experiencing the issue, makes me feel good about my decision of sending it back. Almost didn't do it because I didn't want to come back to this Pixel 5 after being spoiled by that 9's screen size lol.
Got the replacement today, after some testing it seems like this unit has no issues! There is a clear difference between this one and my original. There was a blinding white flash even when using my pattern to unlock. Same thing when double tapping the lock screen to put the device to sleep.
This has no white flashes so definitely seems like a hardware issue. Finally, I can start enjoying this thing!
rickysidhu_ said:
Got the replacement today, after some testing it seems like this unit has no issues! There is a clear difference between this one and my original. There was a blinding white flash even when using my pattern to unlock. Same thing when double tapping the lock screen to put the device to sleep.
This has no white flashes so definitely seems like a hardware issue. Finally, I can start enjoying this thing!
Click to expand...
Click to collapse
Awesome, glad you got a good one! They didn't make you wait too long...
rickysidhu_ said:
Got the replacement today, after some testing it seems like this unit has no issues! There is a clear difference between this one and my original. There was a blinding white flash even when using my pattern to unlock. Same thing when double tapping the lock screen to put the device to sleep.
This has no white flashes so definitely seems like a hardware issue. Finally, I can start enjoying this thing!
Click to expand...
Click to collapse
How bro it can be a hardware issue.. it's only happens on low brightness when you unlock the phone right?I am also facing the same issue but it is not there where I unboxed the phone and used it for 1day after receiving update to os 11.2.7.7only this problem starts to me..so how can it be a hardware issue
Bodhidharman said:
How bro it can be a hardware issue.. it's only happens on low brightness when you unlock the phone right?I am also facing the same issue but it is not there where I unboxed the phone and used it for 1day after receiving update to os 11.2.7.7only this problem starts to me..so how can it be a hardware issue
Click to expand...
Click to collapse
No it happened on any brightness. It was just more noticeable in low brightness and reading through the same issue on OP forums, others were confirming it is hardware related as a complete factory reset isn't able to resolve the issue. If it was software related, a complete restore would have/should have fixed it. Your issue might be different from what I was experiencing.

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