Develop Bugs

black screen phone still works - Help?

Ok..i searched the forums and didnt see the problem i have ran into so any help is appreciated.
I get a black screen but the phone starts up and runs fine..i can fiddle with it and make calls etc..the screen is responsive to touches..just black entirely. But...on occasion it will decide to show the start up Touch Pro screen and stay there..and on occasion i can get the hspl screen to show up..but its very infrequently and seems random.
I have reinsalled the hardspl..i have reinstalled the ROM several times..i have task29ed it..still its working but the screen is black.
Im assuming there is nothing wrong with the screen as it does work fine on occasion (just never gets past the opening screen)..so any suggestions?? Please help.

Let's try this
Did you try to go back to the original ROM, or a factory rest - check the manual for that.
Also, try the shortcut in the manual to get to the boot screen.
Good luck...

Black Screen
It is your light sensor, either it is malfunctioning or it has driver corruption problems, probably the light sensor. I posted a fix a couple of days ago that cured my tilt 2 of essentially same problem. You must remove all reference to polling light sensor, ie, backlight automatic, keyboard backlight and phone backlight off on calls. Review my earlier post for details

black screen fix
Here is the link to previous post:
http://forum.xda-developers.com/showthread.php?t=693270

Thanks for replying to that person ms0529!

black screen
glad to be able to offer a solution that is proven to work in some similar cases. Hope it fixes his problem.

ms0529 said:
glad to be able to offer a solution that is proven to work in some similar cases. Hope it fixes his problem.
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GAH, I LOVE YOU! i had a similar problem, my screen wood work fine wen u started the fone but once u let it go off it woodnt come bak on unless u restared the fone, however the screen was still sensitive wen it was off, i delt with tht for about 2 months but this fixed it THANKU SO MUCH

Phone working but screen black

Hello everyone,
I have since the first time an LG G3 (D855) that I root and that works very well.
Recently I bought a new one from a friend for my girlfriend.
He never root it, he reset it and sent it to me by mail.
At the reception, I turn on the phone and there, I have the LED lights, sound start but nothing on the screen.
It reacts when I put the finger on the screen so the touch sensor works.
I try a restart and battery removal but nothing better.
The screen has no shock but I told myself that perhaps during the trip he took a bad cut.
I hope it's just a miswired table, so I dismounted to check, but still nothing.
ThenI try something, I disconnect my phone too and I swapped motherboards.
And then the screen with my card in it work.
While my screen with the motherboards of the phone I just bought stay blank.
So the screen is not broken, perhaps it was a install problem.
So I use LG Flash Tool to reinstall the original rom (following a tutorial )
Everything goes well and ends without worries.
But that didnt change anything, the screen is still black.
Do you have an idea ?
Thank you in advance for your assistance and sorry for my bad english

I just realized that if I strongly illuminates the screen I can see that it works.
It' like brightness was at zero.
It's not a screen problem because when I plug it to the other motherboard brightness is ok.
Someone had this issue?

Same problem here
So I'm having the same problem at the moment, but this is the 2nd time that this has happened to me. Last time. I fixed it by changing charger. It worked for like 2-3 month and then I switched again and the problem came back. I suggest you try a few charges. It took around a week before it got fixed.
Hope it'll work for you.
BTW it was a Nokia charger

Black screen G2 after some seconds even during boot...
EtreRe said:
I just realized that if I strongly illuminates the screen I can see that it works.
It' like brightness was at zero.
It's not a screen problem because when I plug it to the other motherboard brightness is ok.
Someone had this issue?
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Click to collapse
Exactly the same problem on my LG G2.
It often go to black screen, but it's not totally OFF. Touch work, and the screen the same, i noticed using a torch that the brightness when to something like zero, but if i increase the level, it stay dark. Only press power button sometimes come back, but few second later... Dark screen again.
It happens everywhere during boot, in home, in lockscreen, in TWRP.
I tried:
- Change rom
- Flash stock firmware...
- Totally switched off for 2 months
- Detach and reattach the screen
- Test proximity sensor in hidden menu
Nothing worked.
If anyone has an idea...

Is my 1+3 dead!?

Hi everyone,
I'm experiencing pretty silly situation with my phone.
So the story begins here:
I was surfing the web while listening to music in the bus when suddenly my oneplus3 randomly turned off and I couldn't turn it back on. (I was on something around 15% on battery so it's not a low battery problem) I tried to turn it on several times and after holding the power button for like 10secs it turned on, and after pressing the power button again (because I needed to get past unlocked bootloader screen and dm-verity) I saw a boot screen. The capacitive button leds turned on and after 3 secs it turned off again, so I started worrying... After a while I tried to access the recovery, but no luck at all. It powers it self off after bootscreen. So I started to research. Tried to flash the entire OS, partritions with msmdownload tool. After several unsuccessful flashes (firehosewritedata failed sometimes while writing userimg or system.img or boot.img) I did get the download complete green text message, and after successful flash, the white LED turned on, even the phone was not plugged in USB or charger and turned off. The screen is completely black and the white led just flashes constantly without blinking or anything. I could only turn the led off by pressing the power button for another 10 secs. And after turning the phone off, problem still remains. After oneplus logo phone shuts down...
I can access bootloader.
And after flashing everything should be on stock, because now I only got screen only about bootloader, no dm-verity..
And of course - I still cannot access the recovery.
p.s. I tried to do the power cycle (as the tech support told me) but still no luck at all.

did u tried the full msmdownload tool (1gb) or the 55mb version ?

Mukthar. said:
did u tried the full msmdownload tool (1gb) or the 55mb version ?
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1GB version

djemm1996 said:
1GB version
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Are you sure that you did it right? Did your phone show up as mentioned in the instructions?

Puddi_Puddin said:
Are you sure that you did it right? Did your phone show up as mentioned in the instructions?
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Of course. Everything is done right. I also get that green "download complete" message.
p.s I also opened the phone. water indicators are fine and no major defects what can i see by eye... All connectors are good as well.

Puddi_Puddin said:
Are you sure that you did it right? Did your phone show up as mentioned in the instructions?
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Click to collapse
And yes, phone was connected right. :good: installed drivers with test mode on Win10 and got Snapdragon device in COM devices. As well the MsmDownload tool shows up my device in port #20

Any ideas?

djemm1996 said:
Any ideas?
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Click to collapse
Follow method 2 from the Hard Brick guide by Naman Bhalla and try two or three times.
Sometimes it takes more than once for restoration.

Since you opened the phone, i think your warranty is gone now.
If the msmdownloadtool didnt help you, there is nothing you can do i think.

try to flash again, and if it still maybe something short inside.
if you have disassembly your phone, try disconnecting various flex cable like camera, sim slot etc that connect to the mainboard, that doesn't prevent device from powered on, then try to turning it on.
if it still, check your mainboard, if you don't know how, send it back.

AcidNoteZ said:
Since you opened the phone, i think your warranty is gone now.
If the msmdownloadtool didnt help you, there is nothing you can do i think.
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Click to collapse
Is ir really gone? There is a still warranty void sticker on the screw there, but of course it's possible to see by eye that the phone has been opened.
I have an appointment with Level2 tech support @oneplus, they are going to remotely flash the entire OS, but do you think they are using pretty similar technique as the msmdownloadtool?

djemm1996 said:
Is ir really gone? There is a still warranty void sticker on the screw there, but of course it's possible to see by eye that the phone has been opened.
I have an appointment with Level2 tech support @oneplus, they are going to remotely flash the entire OS, but do you think they are using pretty similar technique as the msmdownloadtool?
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Click to collapse
They are doing the same thing like you did.
I already had a session since i thought they are going to do something "special"
You can try the remote session but im afraid that wont help you if you already did it multiple times.

What about battery? Charged?

drmuruga said:
What about battery? Charged?
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Yes battery is charged of course. It's just doint the same thing. Turns on, after a while when bootscreen comes it just turns off and white notification led appears, after that nothing.

I tried to flash it with tool using method 2 for like 15 times with "download complete" messages, but still no luck at all. Tried to erase partritions with fastboot, flashing just only recovery, modded recovery etc. but I still cannot access the recovery nor system. I just don't get it why the phone does not boot into recovery if I flash it or boot it straight away, It just only turns off and that's it. nothing more. Only black screen and white led lighting all the time (after a while the phone turns warm).
I have read all the MsmDownloadTool thread in "Mega Unbrick thread" and saw that few people have experienced the very same situation as me, so I was wondering if there is any fix for this? It's so strange that I was just surfing the Web and it just turned off by it self with like static image for miliseconds and after that just black screen.
There should be any fix. I guess that it's just a partition error...

Ok, not good news. I had a little remote session before a while. They says it's already a hardware problem.

AcidNoteZ said:
Since you opened the phone, i think your warranty is gone now.
If the msmdownloadtool didnt help you, there is nothing you can do i think.
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Pfffft you think manufacturers notice when you take apart phones? Hell I took apart my Xperia Z2 because it was having problems and then glued it back together with cyanoacrylate hahahaha (worst thing to do but wtv) and no one noticed though it was seemless and everything looked perfect

Guys, I've got something for you! Not really the same thing as Naman.
p.s. not saying its original hehehehe keep safe

man i got a very similiar problem but my op3 has a black screen i was also on low battery around 5-15% when my phone went off after i was in twrp

Actually I was on twrp too! Also I have recently noticed that recovery loading speed was far too long than normal one. I'm talking for something about 5-7 minutes after reboot into twrp. So, who knows what did happen. Just made an RMA request. Will see how it goes.
Anyway, I was on stock 7.1.1 and it's just rooted with custom recovery and that's it! Nothing more! Is that just a factory failure or maybe it's caused by drops i have had? Nothing serious for a 4-5 times for a half year. Of course I have used it even in winter when the snowflakes are coming down from the sky and little rain. Btw, these liquid indicators are white, so all safe. ::laugh:
A
makadama said:
man i got a very similiar problem but my op3 has a black screen i was also on low battery around 5-15% when my phone went off after i was in twrp
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D851 Screen Fade Out Black - Is my Phone dead?

Well, long time with my old body D851, yesterday after I install TecKcafe everything was wonderful, fast and stable,
Unfortunately after try the camera I realize the screen starts to flicker and fades out black.
I already did a factory Reset – No success
Flash Stock TOT and KDZ – No success
The screen turns On and even the Phone boots, but after a few mins the screen fade out black and the only option is to wait for it to cool down in order to get screen back but just for a couple of minutes, weird is that I dont feel that hot to drive the phone to fade out.
I already research a lot on the internet as well as this forum and see this can be a board issue, does anybody know if there is a permanent solution for this or if I have to start thinking in replace my old loved G3 :angel:

Great phone, just remove the board and reseat all the cables, working as new.
If Admin sees this please close this Thread.
Thanks.

Green dot on my a month old phone

Hello everyone as the title suggests there seems to be a green dot on my phone near middle and a little to left like a dead pixel but the problem is that it only appears on lock screen and only appears if the background is black, however as soon as i unlock it, the dot is gone like its never there in the first place and as soon as I lock the screen its back and again gone when I unlock it. So is this a software issue or a hardware issue? And if its hardware is the warranty still applicable? No changes to software has been done phone is completely original. Thank you for time.

Try this:
https://play.google.com/store/apps/details?id=com.ossibussoftware.deadpixeltest
test app and test it on black screen
If the dot is there you have dead pixel

svetlio359 said:
Try this:
https://play.google.com/store/apps/details?id=com.ossibussoftware.deadpixeltest
test app and test it on black screen
If the dot is there you have dead pixel
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Thank you for your reply did the test twice and couldn't find a dead pixel any where but the dot is still there in lock screen and vanishes magically as soon as i unlock it. What could be the possible problem?

May be the wallpaper

svetlio359 said:
May be the wallpaper
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That's the problem, I've tried multiple different wallpapers, its still there. The only thing of interest I've noticed is that it appears only on wallpapers with black background and if that specific spot is black if the color is different then it doesn't appear. I've tried a wallpaper with white background and there was no sign of the dot being there.

Kiyani said:
Hello everyone as the title suggests there seems to be a green dot on my phone near middle and a little to left like a dead pixel but the problem is that it only appears on lock screen and only appears if the background is black, however as soon as i unlock it, the dot is gone like its never there in the first place and as soon as I lock the screen its back and again gone when I unlock it. So is this a software issue or a hardware issue? And if its hardware is the warranty still applicable? No changes to software has been done phone is completely original. Thank you for time.
Click to expand...
Click to collapse
it's not dead pixel, it's stuck pixel. Different than dead pixel, stuck pixel means your phone pixel is alive not dead but stuck on 1 color. People said it can be repaired by using application that repeatedly changing color of your screen. So it can be repaired, but I can give no promise that you will succeed, but you can try it.

SixPaths said:
it's not dead pixel, it's stuck pixel. Different than dead pixel, stuck pixel means your phone pixel is alive not dead but stuck on 1 color. People said it can be repaired by using application that repeatedly changing color of your screen. So it can be repaired, but I can give no promise that you will succeed, but you can try it.
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Thanks you for your reply, I'll try that the only thing bothering me is that its only on lock screen it vanishes as soon as I unlock the screen. Shouldn't this be in home screen as well if its a stuck pixel? as the wallpaper is exactly the same?

Kiyani said:
Thanks you for your reply, I'll try that the only thing bothering me is that its only on lock screen it vanishes as soon as I unlock the screen. Shouldn't this be in home screen as well if its a stuck pixel? as the wallpaper is exactly the same?
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A picture of your phone display with the green dot would be good for anyone to help you. Try to share if you can.

therealroyston2 said:
A picture of your phone display with the green dot would be good for anyone to help you. Try to share if you can.
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I've tried a lot to capture it on the camera of iPhone x but cant as its the size is of a tip of the needle and its mostly visible on the lowest possible brightness it fades as i increase the brightness but its still there and completely disappears as soon as i unlock it. I'll try again tomorrow hopefully I'll be able to catch it.

After you unlock it the background image is also totally black?
Try using a totally black image on bot the lockscreen and home screen and check if it also happens.

rmrbpt said:
After you unlock it the background image is also totally black?
Try using a totally black image on bot the lockscreen and home screen and check if it also happens.
Click to expand...
Click to collapse
Yes the image is totally black and I've tried a completely black image as wallpaper as well, It still happens the dot is there on lock screen and poof gone as soon as I unlock it like it was never there in the first place. What do you think is this a software issue or a hardware? Should I wait till Android 10 is released to see it goes after that or should I claim my warranty right now?

Kiyani said:
Yes the image is totally black and I've tried a completely black image as wallpaper as well, It still happens the dot is there on lock screen and poof gone as soon as I unlock it like it was never there in the first place. What do you think is this a software issue or a hardware? Should I wait till Android 10 is released to see it goes after that or should I claim my warranty right now?
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I think you should take it to a Samsung service centre first if there is one near you if not, may as well do a warranty complaint since it's an issue with the device.

RandomAJL said:
I think you should take it to a Samsung service centre first if there is one near you if not, may as well do a warranty complaint since it's an issue with the device.
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Thank you for your reply and apologies for my late reply got busy with my uni so didn't had much time for other stuff. Just wanted to add during this period I found a way to make the dot go away and that was by removing the fingerprint security for some reason it went away like it was never there lol. This is one strange phone. I'll take it to a service center after this semester cant manage to make time to take it to one and it still has 8 months of warranty left..

Kiyani said:
Thank you for your reply and apologies for my late reply got busy with my uni so didn't had much time for other stuff. Just wanted to add during this period I found a way to make the dot go away and that was by removing the fingerprint security for some reason it went away like it was never there lol. This is one strange phone. I'll take it to a service center after this semester cant manage to make time to take it to one and it still has 8 months of warranty left..
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Thank you so much sir, for your solution. 3 years later and this solution worked to my samsung s22

Avillaa said:
Thank you so much sir, for your solution. 3 years later and this solution worked to my samsung s22
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I have the same exact issue on my galaxy a53. Has it been fixed with any update or it's just a hardware issue?