Samsung A40 - Blinking Light Under Selfie Camera - Samsung Galaxy A40 Questions & Answers

When I unlock my phone from the lock screen, sometimes there is a blinking light underneath the selfie camera behind the screen. It flashes constantly until I lock and unlock my screen again.
Is it a defective screen? The phone is brand new.

Same here and my phone is brand new. Any ideas?

slash143 said:
Same here and my phone is brand new. Any ideas?
Click to expand...
Click to collapse
I took my phone back to the Samsung store and they exchanged the phone. They said they have never seen it before. Luckily it was happening before I went into the store. So I managed to show them the fault.
It has not happened yet on my new phone. For me it was intermittent. It occurs when I unlock my phone in direct sunlight.
Maybe a faulty sensor. It is a purple flashing light about an inch below the selfie camera in the centre of the screen.

Same thing happens again on my new phone.

Same on my week old unit. I believe this is a software glitch that could be fixed in next update, if the developers catch it.
I suspect it might be some glitched animation, since One UI is full of them. I will try eliminating/disabling animations in the developer options and see if that helps.

same problem to me, did you find anything new?

marekmeli said:
Same on my week old unit. I believe this is a software glitch that could be fixed in next update, if the developers catch it.
I suspect it might be some glitched animation, since One UI is full of them. I will try eliminating/disabling animations in the developer options and see if that helps.
Click to expand...
Click to collapse
Samsung have said it is a software issue and they are aware of it. They said they are working on a fix which should be released in the next few weeks.

I've never seen this behavior on my A40 but it sure sounds strange.
Sent from SM-G965F

tys0n said:
I've never seen this behavior on my A40 but it sure sounds strange.
Sent from SM-G965F
Click to expand...
Click to collapse
For me it occurs when I unlock my phone in direct sunlight. It doesn't occur in dark places. I don't think it happens with adaptive brightness turned on.
This is the 3rd phone I've got from 2 different stores. Same problem on latest firmware on SM-A405FN/DS.

thecf said:
For me it occurs when I unlock my phone in direct sunlight. It doesn't occur in dark places. I don't think it happens with adaptive brightness turned on.
This is the 3rd phone I've got from 2 different stores. Same problem on latest firmware on SM-A405FN/DS.
Click to expand...
Click to collapse
For me it also happens in direct sunlight , but I think the problem is that phone overheats in pocket and after starts blinking, I have tried turning on and off in sunlight couple of times and it is not blinking unless I would have the phone in my pocket for a long time in high temperature

Hello, face recognition can be responsible here, go on and disable it

Related

Random screen blank problem

My HD suddenly developed a problem where the screen will sometime not turn on when come out of standby, or after soft-reset. When this happens, I noticed that the phone is still working because you can feel the feedback from the virtual buttons. The screen is just blank.
I tried hard-resetting it but during the process when the phone goes to reset, the screen goes blank again but the phone continues to function.
I think it is a hardware problem as when I soft-reset it, the "smart mobility..." screen does not even comes on. The phone just continues to boot up.
This only happens randomly and I cannot reproduce it everytime. I am concern that if I sent it for service, they might not be able to reproduce the problem and send it straight back.
I am from Sydney Australia so the only authorised repairer is Fonebiz.
Anyone has experience dealing with them?
Do they have tools to diagnose the problem even if they cannot reproduce the problem? I suspect the motherboard is faulty.
I really like my HD and this is just painful! Any comments or advise will be much appreciated.
I have the exact same problem which I mentioned: here though after some time I had the additional issue that the screen would come on but with an upside down mirror image, and sometimes when that happened it would also look very low res or pixelated or whatever.
I just mailed it off to a repair center in the Czech Republic. Hopefully they will be able to reproduce the problem. It was getting to the point where it would rarely turn on correctly.
ekitel said:
I have the exact same problem which I mentioned: here though after some time I had the additional issue that the screen would come on but with an upside down mirror image, and sometimes when that happened it would also look very low res or pixelated or whatever.
I just mailed it off to a repair center in the Czech Republic. Hopefully they will be able to reproduce the problem. It was getting to the point where it would rarely turn on correctly.
Click to expand...
Click to collapse
Actually I also have the problems with upsidedown screen and the low res/faded effect.
Please keep us posted with the service.
I have the same problem and it's getting worse and worse. Today it happend around 20 times. And at the moment it doesn't even happen anything although I had it some seconds ago in my hands. I turned screen off, put it on the desk and now nothing, even no vibration, just dead...
-db- said:
I have the same problem and it's getting worse and worse. Today it happend around 20 times. And at the moment it doesn't even happen anything although I had it some seconds ago in my hands. I turned screen off, put it on the desk and now nothing, even no vibration, just dead...
Click to expand...
Click to collapse
Same happened to me, had to send it off for repair. Problem with the main crcuit board. All fixed now.
garybeaman said:
Same happened to me, had to send it off for repair. Problem with the main crcuit board. All fixed now.
Click to expand...
Click to collapse
So they are able to fix it? Gives me hope again
If the problem happens often and can be easily reproduced, it should be easy to fix. Problem with mine is that it only happens once or twice a day. I might have to wait a bit before sending it for service. Luckily I still have 10 months on my warranty.
forumx said:
If the problem happens often and can be easily reproduced, it should be easy to fix. Problem with mine is that it only happens once or twice a day. I might have to wait a bit before sending it for service. Luckily I still have 10 months on my warranty.
Click to expand...
Click to collapse
Ok then I send it in, because now it happens all the time. Just have to leave it some minutes and then it's black again :-(
ive been having the same problem, try this:
go to setings - system - power - advanced
untick "turn off device if not used for"
seems to have worked for me
scar88 said:
ive been having the same problem, try this:
go to setings - system - power - advanced
untick "turn off device if not used for"
seems to have worked for me
Click to expand...
Click to collapse
Yeah sure that works but then the phone is always on so your battery gets drained real fast, not?

is there any solution to "screen can't switch on"?

at the begining , my HD is fine.
But , after 2month , the phone has some rotation problem( it doesn;t matter, as you can solve it by pressing the on/off buttom )
But now, the phone's screen can't switch on, when i touch the four buttom on the surface of phone, it still vibrate..just i can't switch on the screen"
i have already tried all the things like take out the battery, press the reset buttom... the problem still occur,
Screen can sometime turn on luckily~
but, if the phone's screen is switched off for a while, the problem still occur..
can any professional heal my phone?
likashing said:
at the begining , my HD is fine.
But , after 2month , the phone has some rotation problem( it doesn;t matter, as you can solve it by pressing the on/off buttom )
But now, the phone's screen can't switch on, when i touch the four buttom on the surface of phone, it still vibrate..just i can't switch on the screen"
i have already tried all the things like take out the battery, press the reset buttom... the problem still occur,
Screen can sometime turn on luckily~
but, if the phone's screen is switched off for a while, the problem still occur..
can any professional heal my phone?
Click to expand...
Click to collapse
Obvious questions: Have you tried a hard reset?, Diff rom? Have you loaded up anything weird that mighta casued issues? If it will do a hard reset then do it. Start from scratch. If it works then be mindful of what you reload it with. If that doesn't get it, try a diff rom. At this point you got nothing to lose. Will it go into bootloader mode?
Battery comes to mind also. Have you run it down to nothing? Sometimes that will affect the charging capabilities. When the screen is dark can you still hear sound? Def do the HR.
My suggestion would be, to give the HD to your reseller and get it fixed.
I have had the same problem, and as my HD also didn't connect to my PC anymore, I send it in, and got a brand new one, because they couldn't fix it. Make a backup while you can, because the problem will get worse over time.
Likashing, the same exact thing started to happen to me a couple days ago. I've hard reset and flashed a new ROM. It seems that the problem is intermittent. After I just let the phone sit for a few minutes, the screen will come back on. It makes me wonder if this is heat-related issue. Anyway, I'm screwed, because I have no warranty since I bought it from a guy in Australia (I'm in US and needed the T8285).
I'll definitely be keeping an eye here to see if there's any resolution other than repair.
while the screen does not turn on, have you maybe tried to use another phone to call your HD and check if the screen turns on when the call arrives?
maybe if the screen turns on it's more a software related issue (so hardreset et cetera might be worth a try), if not, i fear it's hardware
crashDebug said:
while the screen does not turn on, have you maybe tried to use another phone to call your HD and check if the screen turns on when the call arrives?
maybe if the screen turns on it's more a software related issue (so hardreset et cetera might be worth a try), if not, i fear it's hardware
Click to expand...
Click to collapse
Good point crashDebug... I will definitely try that the next time the behavior is exhibited (right now is one of those times where I can't intentionally duplicate the issue... of course!)
stpete111 said:
Likashing, the same exact thing started to happen to me a couple days ago. I've hard reset and flashed a new ROM. It seems that the problem is intermittent. After I just let the phone sit for a few minutes, the screen will come back on. It makes me wonder if this is heat-related issue. Anyway, I'm screwed, because I have no warranty since I bought it from a guy in Australia (I'm in US and needed the T8285).
I'll definitely be keeping an eye here to see if there's any resolution other than repair.
Click to expand...
Click to collapse
...i have no warranty too....
in Taiwan , there are couple of people have these situation, the maintenance staff working Htc, said that it is a motherboard problem or the screen problem...but i wonder that why only few people have this problem. My phone is completely fine before i flash the HSPl1.56OLINEX.but when i try to flash back to Hspl 1.4 , the problem still happen.....
cbreze said:
Obvious questions: Have you tried a hard reset?, Diff rom? Have you loaded up anything weird that mighta casued issues? If it will do a hard reset then do it. Start from scratch. If it works then be mindful of what you reload it with. If that doesn't get it, try a diff rom. At this point you got nothing to lose. Will it go into bootloader mode?
Battery comes to mind also. Have you run it down to nothing? Sometimes that will affect the charging capabilities. When the screen is dark can you still hear sound? Def do the HR.
Click to expand...
Click to collapse
i have tried diff rom and diff HSPL....
sometimes, the phone's screen still can turn on luckily, then i can go to bootloader mode, but if the phone sit for a while, the phone's screen can't turn on...then i can't get into bootloader. ..
i can hear sound when someone phone me...but the screen still keep dark!
Exactly same problem here
HTC purchased in Sweden.
Cant switch screen on, when incoming calls come it rings but no screen alive. Vibration when pressing the buttons at bottom. And the low battery sound i can here when low on battery.
When connecting it to charger the orange light at power button will not light up (orange) as usually.
My problems started when i had the HTC in my jacket pocket, a VERY rainy day, so the phone was moist OBS not wet. Thats what i beleive ghappened to my phone.
And now i can not find the purchase receipt to the phone
It might be entirely unrelated, but the screen on my THD also had the same problems immediately after a few flights from coast to upcountry 1800m elevation during summer. The system powered up but the display remained off, and no amount of fiddling would switch it on.
The first time it took a few hours and then spontaneously corrected itself. The second time I had to remove the battery for two days, and then all was fine again. Only happened after flights from coast in summer. It hasn't happened again, but then it's winter here in the southern hemisphere.
I suspect condensation, but that's only a guess...
I have the same problem too here in Australia. It started with the screen not turning on but the buttons still work. Then you'll sometimes notice the screen is inverted and upside-down.
I've sent mine in for service. Haven't got it back yet but I understand the motherboard needs to be replaced.
In short, this is definitely a hardware problem and if you look around the discussions on the net, this is slowly becoming quite a common problem with HD.
forumx said:
I have the same problem too here in Australia. It started with the screen not turning on but the buttons still work. Then you'll sometimes notice the screen is inverted and upside-down.
I've sent mine in for service. Haven't got it back yet but I understand the motherboard needs to be replaced.
In short, this is definitely a hardware problem and if you look around the discussions on the net, this is slowly becoming quite a common problem with HD.
Click to expand...
Click to collapse
Yes exactly, I have had the upside down screen too! Well at the very least it is good to know that people are experiencing this problem other than me. I love this phone so I will have to pay to for the repair. If anyone here has any idea or estimate of what this will cost, please share this here.
The problem for me was the moist, after three days it started to react again... And now it seems to be working...
I guess the air up in the mountains are moist... maybe...
AddeBC said:
The problem for me was the moist, after three days it started to react again... And now it seems to be working...
I guess the air up in the mountains are moist... maybe...
Click to expand...
Click to collapse
So then that's two people so far (including AFW from the first page) who have said that after some situations involving moisture have passed, things are back in working order. I hope for the same to happen soon.
so it is due mainly to wateR?
leobox1 said:
so it is due mainly to wateR?
Click to expand...
Click to collapse
I doubt it is related to water. My device never gets near water or moisture and still experience this problem. I do wonder if it is heat related as the device can get quite hot during charging and perhaps cause the motherboard to play up after a while.
btw, does any of you use some sort of plastic/silicone cover. I wonder whether this type of cover blocks the heat from dispersing.
As i understand it, so far only people who have flashed a different ROM (and with it maybe radios) to their device. If it's a heat issue it could be something to do with the radio version. I have tried different radios and there was one in particular that heated my phone up like crazy while i was listening to music without the screen on (but i don't recall which one it was).
I only used stock rom and never flash my device and still have problem...
forumx said:
I doubt it is related to water. My device never gets near water or moisture and still experience this problem. I do wonder if it is heat related as the device can get quite hot during charging and perhaps cause the motherboard to play up after a while.
btw, does any of you use some sort of plastic/silicone cover. I wonder whether this type of cover blocks the heat from dispersing.
Click to expand...
Click to collapse
I do not have any type of cover on mine.
I agree with the possibility of it being a heat issue though.
Very perplexing. This past weekend I again travelled from Joburg to the coast (from 1800m elevation to sea level), and again the THD screen stopped responding to input whilst at the coast. I desperately fiddled, reflashed, hard reset at least 10 times to see if I could get the screen to work, but it always booted up locked, and no amount of fiddling would do anything. I even put the thing on an oil heater for a few hours, hoping that if condensation was the culprit (my current theory) then a goodly dose of heat would at least evaporate any moisture, and once, for about a minute the screen responded, and then again went dead to touch. I had to use another phone all weekend. This evening, on returning to Joburg, I resolved to get another device, maybe the Diamond 2. After a few hours back home I retrieved the THD, put in the SIM and, lo and behold, it worked fine. This is most vexing, but I fear the THD will have to go -- I just can't live with this unreliability. Sad, really, because I love the big display, I love the fact that guys like Throy are cooking good ROMs. In many ways the THD is about the best out there, at least for my needs. But that &@&* thing has to be reliable.

Galaxy S8 screen/display issue

Hi,
I just got my Galaxy S8, i've noticed some screen issue, especially in dark places or at night. The screen is showing weird color on the top. Check the pictures attached and let me know what do you think.
To check if you have the same issue with your phone, you need to increase the brightness to the max, turn of auto adjust brightness, and check your phone in a dark place
Erm
Just do a screen print and attach it.
takes few seconds on mobile to do.
dial *#0*# and do color tests, if it fails I would return it.
How can i show u the picture?
Hi
Green spot at top of screen
could he be referring to the iris scanner ?
Trev
No... these spot are showing on the screen starting from thr top
Upload the picture to a image hosting site and put the link in your post.
Sent from my SM-G950U using Tapatalk
fhprod87 said:
Hi,
I just got my Galaxy S8, i've noticed some screen issue, especially in dark places or at night. The screen is showing weird color on the top. Check the pictures attached and let me know what do you think.
i am unable to attach the image, your help is appreciated
Click to expand...
Click to collapse
I know what you're talking about. I have 2 Galaxy s8+'s here beside me. One has green going along the top edge and the other has red tint. Ughhhh
And what did u do about the green on the top of the screen
Btw they issued a refund.... so i bought s8 from a different store, but the same issue again... so 2 s8 with the same issue so far
Same problem with green here
This topic is worthless without pictures.
I know its useless without a pic... but i cant upload pic here and enen links... dunno why
I am trying to upload
Ok here you go... more picture.... now upload option is working... see the pic and let me know what you think
fhprod87 said:
Btw they issued a refund.... so i bought s8 from a different store, but the same issue again... so 2 s8 with the same issue so far
Click to expand...
Click to collapse
I'm on my 5th exchange so far. LOL
LiquidPlacidity said:
I'm on my 5th exchange so far. LOL
Click to expand...
Click to collapse
Same issue as the pic ? and can you tell me the source of the manufacture?
I had these for like 2 seconds when I just started setting up my phone, then I never saw it again.
So it might be a software image processing glitch.
Tried a factory reset / changing the color mode?
Skander1998 said:
I had these for like 2 seconds when I just started setting up my phone, then I never saw it again.
So it might be a software image processing glitch.
Tried a factory reset / changing the color mode?
Click to expand...
Click to collapse
Well i tried changing the display mode, even tried factory reset, same issue..
So they did a refund.. and i went to a different store and same issue with the s8...
Even i called samsung they gave me a code to change the color... but nothing fixed the issue
i have a similar issues, but not that obvious

[HELP] Black screen with no USB detection ?

So, my device had been acting funny for a while, automatically shutting down, stuck on boot loop, fingerprint not being recognised, battery draining really quick.
But since they had been a minor inconvenience, I didn't look in to the problem. But today morning, while I was watching a vid on the Youtube app, the brightness of the phone suddenly decreased, and using the brightness slider had no effect. And then, after a while, the screen went black, with only the finger print sensor vibrating, if touched. When i connect it to the charger, the LED light does not flash. It is not even getting detected when I connect it to the PC via USB.
Any help please ? I think the warranty has run out.
P.S. - All these errors seem to be taking place after the an update. Though I don't remember which one. Also, running stock ROM, didn't flash anything.
RaydenX77 said:
So, my device had been acting funny for a while, automatically shutting down, stuck on boot loop, fingerprint not being recognised, battery draining really quick.
But since they had been a minor inconvenience, I didn't look in to the problem. But today morning, while I was watching a vid on the Youtube app, the brightness of the phone suddenly decreased, and using the brightness slider had no effect. And then, after a while, the screen went black, with only the finger print sensor vibrating, if touched. When i connect it to the charger, the LED light does not flash. It is not even getting detected when I connect it to the PC via USB.
Any help please ? I think the warranty has run out.
P.S. - All these errors seem to be taking place after the an update. Though I don't remember which one. Also, running stock ROM, didn't flash anything.
Click to expand...
Click to collapse
Have you tried pressing power button for at least 2 minutes?
RaydenX77 said:
So, my device had been acting funny for a while, automatically shutting down, stuck on boot loop, fingerprint not being recognised, battery draining really quick.
But since they had been a minor inconvenience, I didn't look in to the problem. But today morning, while I was watching a vid on the Youtube app, the brightness of the phone suddenly decreased, and using the brightness slider had no effect. And then, after a while, the screen went black, with only the finger print sensor vibrating, if touched. When i connect it to the charger, the LED light does not flash. It is not even getting detected when I connect it to the PC via USB.
Any help please ? I think the warranty has run out.
P.S. - All these errors seem to be taking place after the an update. Though I don't remember which one. Also, running stock ROM, didn't flash anything.
Click to expand...
Click to collapse
THE problem must be with your display as you mentioned first your brightness
decreased i highly suggest you try changing the display.
strongst said:
Have you tried pressing power button for at least 2 minutes?
Click to expand...
Click to collapse
I did as you asked. The phone vibrates as if restarting. But there's no display or sound.
Also, I remember just before it went dark, it had just started raining, maybe one drop fell on the screen. Is any way that's the cause of my problem ?
RaydenX77 said:
I did as you asked. The phone vibrates as if restarting. But there's no display or sound.
Also, I remember just before it went dark, it had just started raining, maybe one drop fell on the screen. Is any way that's the cause of my problem ?
Click to expand...
Click to collapse
Lol yes of course it can be https://forum.xda-developers.com/oneplus-5/help/trying-to-reload-one-plus-5-t3835250
sohail_23 said:
THE problem must be with your display as you mentioned first your brightness
decreased i highly suggest you try changing the display.
Click to expand...
Click to collapse
Oh my word, okay, um. Do we need to visit a service centre for that, or can it be done in local mobile shops ? And how much does it cost ?
RaydenX77 said:
Oh my word, okay, um. Do we need to visit a service centre for that, or can it be done in local mobile shops ? And how much does it cost ?
Click to expand...
Click to collapse
Read the linked thread please. And this too https://forum.xda-developers.com/zuk-z1/help/water-damaged-zuk-z1-t3832874

Oneplus 5 Black screen after replacement

My OP5 screen had a small crack so I decided to repair it. After following the tutorial on youtube step by step the phone powers up fine. But as soon as the screen goes to sleep, it get stuck in black, although it feels like responsive (Ican hear the clicks and vibrates and all) but it wont wake up
imercado said:
My OP5 screen had a small crack so I decided to repair it. After following the tutorial on youtube step by step the phone powers up fine. But as soon as the screen goes to sleep, it get stuck in black, although it feels like responsive (Ican hear the clicks and vibrates and all) but it wont wake up
Click to expand...
Click to collapse
Could you wake up the screen? Maybe it's a connection problem or related to the proximity sensor?
Did you ever find a solution to your problem? I have exactly the same problem, but it happens only with Android 9.0. Oreo seems to be working OK, but as soon as I upgrade to official 9.0, the screen won't wake up from sleep. The backlight turns on, but the screen stays black. The phone works OK as long as I use it, but if I press the power button or let it to enter "standby mode", it will stay that way (off). I suppose it has something to do with the replacement screen, but since it works with 8.0, I wish there was a workaround to get the LCD to work with Pie too.
Same problem here. Replaced display too.
I've had a similar issue with a different device before (ZTE nubia Z7 mini). I replaced the screen and it would work correctly, but when I booted TWRP, I would get a black screen. I figured that because the replacement screen was not an OEM one, it may have something to do with LCD drivers in the recovery. I used the old cracked screen with the device opened up to navigate in the TWRP recovery, and I flashed an newer/different recovery. Voila, the new recovery worked with my replacement screen. Based on this experience, it may just be an LCD driver compatibility issue with the replacement screen, causing the screen to just go into forever sleep mode. The driver may need to be changed or tweaked in the Pie version for your replacement screen to work with it. Just a thought, not fully certain.
iwantademo123 said:
I've had a similar issue with a different device before (ZTE nubia Z7 mini). I replaced the screen and it would work correctly, but when I booted TWRP, I would get a black screen. I figured that because the replacement screen was not an OEM one, it may have something to do with LCD drivers in the recovery. I used the old cracked screen with the device opened up to navigate in the TWRP recovery, and I flashed an newer/different recovery. Voila, the new recovery worked with my replacement screen. Based on this experience, it may just be an LCD driver compatibility issue with the replacement screen, causing the screen to just go into forever sleep mode. The driver may need to be changed or tweaked in the Pie version for your replacement screen to work with it. Just a thought, not fully certain.
Click to expand...
Click to collapse
You're probably right about the driver issue. My OP5 has no problems whatsoever with Android 8.1, but 9.0 won't work no matter what I do after waking up the device. The backlight turns on and and off for a few times after which nothing happens. The phone is still working normally, but it's in "blind mode" (music will continue playing, volume buttons work...but they're kind of slow and laggy) Too bad that the latest update (9.01) didn't fix this issue either. I really wouldn't hold my breath getting this issue fixed anytime soon (officially) as it seems to be a cheap 3rd party screen problem.
edit: I tried the custom recovery (20181227) and the same thing happens there. Once screen goes off, it won't come back on.
Edit 2: gave up on the replacement screen and ordered an oem lcd. Lets see how it goes.
sbasil said:
You're probably right about the driver issue. My OP5 has no problems whatsoever with Android 8.1, but 9.0 won't work no matter what I do after waking up the device. The backlight turns on and and off for a few times after which nothing happens. The phone is still working normally, but it's in "blind mode" (music will continue playing, volume buttons work...but they're kind of slow and laggy) Too bad that the latest update (9.01) didn't fix this issue either. I really wouldn't hold my breath getting this issue fixed anytime soon (officially) as it seems to be a cheap 3rd party screen problem.
edit: I tried the custom recovery (20181227) and the same thing happens there. Once screen goes off, it won't come back on.
Edit 2: gave up on the replacement screen and ordered an oem lcd. Lets see how it goes.
Click to expand...
Click to collapse
Do keep us updated if changing the display again fixes this issue. Would be interesting if someone had a fix for 3rd party displays but as of now it seems that's highly unlikely
]
iwantademo123 said:
Do keep us updated if changing the display again fixes this issue. Would be interesting if someone had a fix for 3rd party displays but as of now it seems that's highly unlikely
Click to expand...
Click to collapse
Sure.
Got the new OEM amoled screen today. It's brighter, more responsive and doesn't get stuck (black screen) with Android Pie. Problem solved. Price was 3 x higher than the cheap 3rd party screens, but definitely worth it (around 80 euros). All screen gestures work as well.
Bought it on Witrigs (https://www.witrigs.com/oem-lcd-screen-assembly-for-oneplus-5-midnight-black). it came really well packed and arrived fast (7-10 days to Finland). I highly recommend this screen and Witrigs to everyone
Also changed the screen from a friend and have this strange behavior, that the screen won't turn on .. only when I reboot or double press the power button so it launches the camera - the delay tho is about 7s, which is insane! you guys think this is the screen problem, or did I damage something and if yes, what? I repaired about 100 phones in total already ..
Link to the video: https://youtu.be/QmkBspymv8w
androidfreak11 said:
Also changed the screen from a friend and have this strange behavior, that the screen won't turn on .. only when I reboot or double press the power button so it launches the camera - the delay tho is about 7s, which is insane! you guys think this is the screen problem, or did I damage something and if yes, what? I repaired about 100 phones in total already ..
Link to the video: https://youtu.be/QmkBspymv8w
Click to expand...
Click to collapse
Sounds a lot like my OP5 with cheap 3rd party screens which would hardly work at all with Android Pie. If your friend's phone is running on Pie, try downgrading it to Oreo and see if that helps. My phone worked moderately with Oreo but not at all with Pie (wake and touch issues). Currently my OP5 is running Android Pie perfectly with the screen that I bought on Witrigs.
androidfreak11 said:
Also changed the screen from a friend and have this strange behavior, that the screen won't turn on .. only when I reboot or double press the power button so it launches the camera - the delay tho is about 7s, which is insane! you guys think this is the screen problem, or did I damage something and if yes, what? I repaired about 100 phones in total already ..
Link to the video:
Click to expand...
Click to collapse
Bizarre, have you tried the usual factory reset / rom reflash? If you confirm that its not a software related issue, then it probably is just the screen if its not an OEM part. Can't see what else would be the issue here unless there was other kind of damage before the repair maybe
Like @sbasil mentioned, it could just be due to the non-OEM screen being incompatible with Pie drivers.
Thank you for saving my phone
sbasil said:
Sounds a lot like my OP5 with cheap 3rd party screens which would hardly work at all with Android Pie. If your friend's phone is running on Pie, try downgrading it to Oreo and see if that helps. My phone worked moderately with Oreo but not at all with Pie (wake and touch issues). Currently my OP5 is running Android Pie perfectly with the screen that I bought on Witrigs.
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Thank you for saving my phone
Mine not working with lineage base rom but is good with last pie 9.0.8. Did you try it?
Have this issue too
My OP5 has its original AMOLED screen. Running OS 9.0.8. This started happening after the most recent update. At least I never noticed it before.
I ran *#808# diagnostics, thinking maybe it's the proximity sensor, or the fingerprint scanner, but everything passed.
Also while locked, ambient display works. It's just getting the Home screen to appear after waking the phone that's become agonizing. And it does wake, the touch screen is responsive, it's just completely blind.
I mean consider this: I can take a screen shot, a screen shot, while the screen is in ambient display and the screen shot is of the home screen.
Pressing the power button or home button or notification slider repeatedly sometimes coaxes it to appear, but the only sure way to get the Home screen back is to restart the phone.
I had a black screen issue after changing the screen to an OEM AMOLED one, and after tearing my hair out for a couple of hours, I discovered that turning off " night mode" fixed the problem instantly
Same happened to me... cracked screen, purchased 'OEM screen' installed. Some apps work, some just black screen.
Driver issue? Running Pie 9x. Anyone had success with this by dropping back to Oreo? Would it do anything different to flash the Pie Firmware?
I repair/upgrade OnePlus 3/3T/5/5T phones to donate to families in need at the local family shelter. Some of them have lost or had to sell their phones just to get food and such. Now they need one to arrange job interviews and housing, things of that nature. So anyways, all that to say this.... I have replaced a LOT of displays, and all of them were the 'cheap' ebay variety. Each and every time I would replace the display, the phone would act just as described in this thread.
After long hours of reading, searching, and experimenting, I have found the ultimate and final solution to this problem. The answer to this issue is simple, but was not so simple to find. Whenever anyone does a screen replacement, and the screen is not the high-priced OEM variety, their phone will almost always have extreme difficulty in waking. The fix, and it has worked for me 100% of the time, is to flash a custom kernel. For the OP5/5T the kernel I use that always works is the Affinity kernel. Just flash and forget. The phone will always wake up after you flash that kernel.
However, don't forget, that what also happens with these lower priced replacement screens is that you can no longer double-tap to wake. I still haven't found a solution for that problem, but it always happens each time I replace a screen. The kernel won't help with that. But it does fix the 'won't wake up' problem.
Try it for yourself and see. You will be happy you did!
Oblias said:
... The fix, and it has worked for me 100% of the time, is to flash a custom kernel. For the OP5/5T the kernel I use that always works is the Affinity kernel. Just flash and forget. The phone will always wake up after you flash that kernel.
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Please, can you point which FW you're using?
d2mac said:
Please, can you point which FW you're using?
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I'm not clear about what you are asking. What exactly are you calling FW?? Some people mean radio and camera firmware. Some people mean the custom rom that gets flashed. What do you mean?

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