I recently replaced the screen on my K20 Pro and I noticed that there are a few malfunctions. Screen brightness suddenly goes max for a few seconds when using opening the phone from lock screen and usually when using fingerprint to unlock (I have my Auto-Brightness set to off). Ghost touches when tapping but none when swiping. I was wondering if this is a common malfunction after replacing the screen (calibration or something) or did the installation of the screen went wrong or is it because the LCD used to replace the original one was defective. Thanks for the insights.
i just replaced my screen four days ago and so far i got no problems of some sort..
so, i think it's probably the installation or the unit's fault. idk tho
I'm just annoyed by the sudden screen brightness max. To be honest I think the ghost touch thing is because of a defect LCD, but I think the brightness problem is from the system. It's like the phone does not recognize or remember the previously set brightness. I hope there's a solution for this. Do factory resetting the phone solve any brightness problems?
hello! did you managed to solve this problem? I have the same problem
if you removed foil and it still touch in random parts of screen,. then send it back. i had the same symptoms with a few screens that I repaired. just Chinese quality
yaro666 said:
if you removed foil and it still touch in random parts of screen,. then send it back. i had the same symptoms with a few screens that I repaired. just Chinese quality
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i did the replacement with not 100% compatible display...because it was way cheaper than the display I needed...(from an oppo phone) i know it sounds weird but the display was 200 dollars( the 100% compatible from oppo) and i payed like 70 for this display that flickers the bringtness..but they told me a factory reset can solve it?
what do you think?
try, but I doubt it. looks like fauly/not compatible to me.
try flashing latest miui to make sure you did everything to get it to work, if that doesn't make it better just don't waste your time. if you have more technical data on both anoled and lcd with connections described (every pin) then you could make research a d bypass if needed. otherwise send it back
vincedrian said:
I recently replaced the screen on my K20 Pro and I noticed that there are a few malfunctions. Screen brightness suddenly goes max for a few seconds when using opening the phone from lock screen and usually when using fingerprint to unlock (I have my Auto-Brightness set to off). Ghost touches when tapping but none when swiping. I was wondering if this is a common malfunction after replacing the screen (calibration or something) or did the installation of the screen went wrong or is it because the LCD used to replace the original one was defective. Thanks for the insights.
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Click to collapse
managed to solve? I have the same problem, besides sometimes the screen seems to lose sensitivity, I saw in some groups people recommend buying parts from the dragon-tt store....I'm thinking of taking a chance....
Related
OK I have had my T-mobile Wing aka HTC Herald since last April.
Just a few days ago I encountered a problem with my lcd. And I would like your guys feedback if possible before I purchase an lcd replacement.
My problem is when I slide open the wing my screen starts to fade, (almost making it look like a negative from a picture) after that it starts to fade to different colors.
Now the problem persists when the phone is closed, however if I tap the top of my wing and hold it the screen becomes normal, but once I let go it starts to fade again.
I would like to know if any of you experienced this with ur phone and if a replacement lcd screen will fix the problem or am I sol?
If it helps im running my wing on Open Touch v6.0 WM 6.1 Build 20273.1.3.3
Thanks in advance.
LCD problems
Hello,
I too have some weird LCD problems and instead of creating a new thread I thought of posting in this one.
For the past few months, whenever I get a call or resume my phone from standby mode using the power button the entire screen goes white or sometimes it has green or blue colored lines all over them. I have to keep on pressing the power button few times to get proper display. Also whenever I open the qwerty keyboard the display goes blank. Since I am out of warranty Tmobile is not ready to replace the phone and I contacted the HTC customer service and they told that the display unit and some hardware stuff is gone and it needs to be replaced and will cost a minimum of 170$ and will increase if they had to replace some other hardware.
Please note that, my screen is NOT broken and the touch screen too works fine. Recently the display has gone completely blank or too faded even to see whats there in the screen I could barely see the today screen.
I searched and I did not find any similar issues that other folks have faced. Since the LCD and the touch screen is not broken replacing them is not going to fix the issue, correct? I was using open touch and recently I updated the latest official Tmobile release of ROM 6.26.xxx. I also tried the hard resets too.
Any other ideas/suggestions will be of great help for me. Thanks in advance.
I am having some similar problems as well, but my problem is much more severe. My screen is completely black and it just happened this past weekend. When i slide the phone the screen used to flicker but now it black as well. Phone works fine but is useless due to the fact the the screen is out. I remember seeing a program where you can interact with your phone via your pc when something was wrong w/ your screen (cracked, broken, etc.) I have searched the forum but to no avail. The program was very simple and effective. I plan on replacing my phone but would like to retrieve some info off the one I have. I just need that program! Anyone please HELP US!
handsome22 said:
I am having some similar problems as well, but my problem is much more severe. My screen is completely black and it just happened this past weekend. When i slide the phone the screen used to flicker but now it black as well. Phone works fine but is useless due to the fact the the screen is out. I remember seeing a program where you can interact with your phone via your pc when something was wrong w/ your screen (cracked, broken, etc.) I have searched the forum but to no avail. The program was very simple and effective. I plan on replacing my phone but would like to retrieve some info off the one I have. I just need that program! Anyone please HELP US!
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Click to collapse
link to the thread containing some info about the software... its called my mobiler
thanks for the info
Hello!
I recently purchased a broken S4 with a 'flickering screen' issue. Normally, people are told to return the phone for a replacement, but I can't do that.
In more detail, the problem begins after using the phone continuously for several minutes. The phone works flawlessly regardless of the broken glass screen, but after a while, begins to flicker. Only slightly at first, but then more and more severely until the screen shuts off. Turn the screen on and off again, and it's back to normal. (you normally need to leave the phone for a while before turning it back on, or it'll quickly just flicker itself off again). This to me suggests an over-heating problem, but I can't be sure.
I've wired the phone up the the TV using cheap cable, and the flicker doesn't show on the TV. That is, the phone starts going mental, doing its flicker thing, but the image on the screen remains constantly smooth when swiping - no flicker.
So... is this an image with the digitizer or the cable attaching the digitizer to the motherboard? If the screen doesn't flicker on the TV, that means we can rule out a motherboard issue, correct?
I just want to know what part of the phone to replace really. I don't want to buy a £80 digitizer only to have the same problems once it's been replaced.
Any suggestions welcome, cheers!
Based on your testing, it's very likely that you can rule out the motherboard. Unfortunately, that leaves the screen. You'll have to replace it, and you can reuse the existing midframe, but save as much of the adhesive as you can after peeling the old screen off, as the new screen doesn't come with adhesive to mount to the midframe.
Unless of course, the place you buy the screen from includes a small roll of the stuff.
Hello,
As @Strephon Alkhalikoi said it may depend on the motherboard.
Sometimes the kernel may be the cause too, I suggest to try first to reflash stock ROM. Here you can find how-to
With due respect to Antaresone I think I've found the best solution out there for most annoying screen flickering issues... Done a substential amount of digging and finally discovered the app "Twillight" works like a charm by enabling backlight control feature... Try it out first, then thank me and share your experience here ...
So My S5 worked great for 2 months or so but then the screen started flickering at very low brightness. As time passed the flickers increased and now whenever the brightness goes below half, the screen shows yellow flickers. That's not even the biggest problem, when i lock my phone and then press the lock/home button to turn on the screen, it shows a flash on the screen and goes dark again. This takes around 15-20 tries everytime almost (sometimes even A LOT more) to turn back on.
There was no water or fall damage.
I've tried factory/hard resetting, disabling hardware acceleration, disabling google chrome (worked for some people on the internet) still not solved.
I don't have warranty, and i'm willing to pay for some repairs but can someone help me out here and tell me where exactly is the problem? Cause i really don't want to pay for a new LCD. It's kinda costly. Thank You
ApexPredator01 said:
So My S5
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I have the exact same problem but only at the bottom of the screen...I am sure is not a software problem because I tried everything (from reinstaling soft with odin from4.4 to 5, with kies, to CM12/13). If you find which is the hardware please let me know.
Thank you. I also don't have warranty and i got this flicker from November.
oia12344321 said:
I have the exact same problem but only at the bottom of the screen...I am sure is not a software problem because I tried everything (from reinstaling soft with odin from4.4 to 5, with kies, to CM12/13). If you find which is the hardware please let me know.
Thank you. I also don't have warranty and i got this flicker from November.
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Click to collapse
I also have this problem. I did bring my S5 for repair under warranty (but have knox tripped) and they REFUSED to repair it,because they think the problem is caused by ME. I did go to a lawyer, and I am gonna sue them. Will update you if I have new info. I am sure it is NOT a Software problem caused by the user,I also tried changing OS,reinstalling Stock,nothing solved my problem.
any update dear as i have the same problem but for me it happened when there was low light means in darkness so when i un tick the auto brightness it will be okay no more flickering issue
Same here. Flickers, stays black. Tho I can fiddle around and it will pick up touches, and have gotten it to reboot.
It will work fine charging. Batt icon works. It only seems to be an issue while its running.
Happens on stock and cyanogen 14.
I have noticed it seems to happen more when cold.
Same problem here on cyanogen 13.0, tried factory reset to no avail. I'm about to try flashing another ROM, just need to figure ou what.
Just done wiping and reinstalling new ROM, bumped up to 7.1 and the problem is still the same.
- Screen has difficulty turning and flickers when the brightness setting is low.
I guess it must be a hardware issue.
My fix for the moment is to disable automatic brightness and never set the brightness too low, so as to avoid have trouble turning on the screen.
Same here. It's a typical problem.
Same...
Sent from my SM-A520F using Tapatalk
I have a feeling that the problem is caused by overheating when charging. I fell asleep and woke up with the phone underneath me, it was blazing hot. It has been doing what the rest of you describe since then.
I am not 100% sure, but I've heard that it's due to the low voltage (brightness) being applied to the screen which is causing the flickering. Unsure why it's only the bottom half (Also happens on mine).
A work around for this is to install a screen-dimmer such as Darker, set the brightness on your phone to be above the flickering amount, then use Darker (or whatever app you use) to lower the brightness down.
Because Darker (or whatever app you use), is a filter, it won't change the voltage, thus no flickering.
do any of you have the always on feature enabled on the screen?
This problem is soooooooo often. Internet full of it.
Is AMOLED designed only to work for 2 years???
Anyone any information about that?
try downgrade firmware back to Android 4.0
Edit: nevermind, this didn't work
Perhaps AMOLED life time is short.
I will buy a LCD display next.
Same here only below the screen. It happened last month
BarrettBear said:
I am not 100% sure, but I've heard that it's due to the low voltage (brightness) being applied to the screen which is causing the flickering. Unsure why it's only the bottom half (Also happens on mine).
A work around for this is to install a screen-dimmer such as Darker, set the brightness on your phone to be above the flickering amount, then use Darker (or whatever app you use) to lower the brightness down.
Because Darker (or whatever app you use), is a filter, it won't change the voltage, thus no flickering.
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How can we up to low brightness voltage? Is this possible?
It happens only at low temperatures. When you make your phone warmer, the flickering at low brightness stops.
Has anyone tried to check if some kind of cleaning the flex connector helps? I'm thinking about buying LCD sticker and give it a try.
I have the exact same problem and its related to temperature, I never face this problem in the summer.
ApexPredator01 said:
This takes around 15-20 tries everytime almost (sometimes even A LOT more) to turn back on.
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Click to collapse
Maybe your power button is broken?
Hello,
So my S7 edge got a replacement display due to being broken like 2 months ago. Today purple smudges started to appear, when I used the device for quite some time heavily and it got quite hot. They disappear when I change display mode or when brightness changes. But sometimes reappear. Is this a defective Display, should I get it replaced via warranty again?
Mine does the same thing, but it has never been repaired or suffered any kind of serious damage. It's not that annoying either.
Could it be some kind of factory defect?
When googling I found it clearly is a hardware display fault. As I had my display swapped by a third party mobile repair shop, they would be the ones to make accountable.
It only occurs at certain brightness settings, and not in all apps/states of display - mostly in those which are really bright like chrome browser without tab open, or dict.cc dictionary app.
I'll keep an eye on the issue and just demand warranty, as this display isn't even 2 months old now. They give 6 months of warranty on exchanged parts. So if it does not go away, I'll just get it replaced again.
It just occured today out of the blue, after flashing custom rom / flashing some stuff and constantly playing on the phone, and it became a bit hot.
It occurred exactly the same to me, after flashing a custom Rom. Now I can't remember which one, but it changed the screen's aspect ratio to simulate the S8's.
After that I flashed stock and the problem kept happening
But I don't think this can be caused by a custom rom... it's a hardware fault.
I hope so because I really wanna install a custom rom ;(
Google the issue - it happened a lot apparently and there is literally no connection to custom Roms - it's a defective Display. I did not have the issue anymore BTW.
I have to get back at this again. I recognized that I can Only see these smudges under certain conditions. I can not see them when I am inside. Only outside, and Only from specific angles - also dependant on screen brightness. When I cover the screen with my hand they disappear.
At first I thought it could also be some fault with the transparent protection skin I also applied one day before first noticing this purple screen problems. But the thing is - they move when scrolling, Only in a small portion of the screen but they go up and down.
The fact I can Only see them in daylight makes me wonder if it's got anything to do with the surrounding brightness sensor that does the automatic brightness and display mode for you.
I find it very strange that I can not provoke the issue indoors, also not if I set up brightness to max.
I'm new to this forum, so I posted in general this problem I'm having since I don't know which category fits for this.
I know this forum is for software-related topics, but I've found hardware questions as well, so I guess this should be fine.
Basically, some time ago my phone started having this problem, which I suspect is hardware related, which is what they call screen burn.
Funny thing is, people usually say this problem is permanent, but in my case it's just temporal.
Sometimes my screen is working just fine, and suddenly starts flickering. If I try to switch apps, a "ghost image" of the other app stays there in the background, and until the screen refreshes, it takes time, or maybe I have to switch my screen on-off again, etc.
Another times It turns white, but I still can use my phone properly.
I've identified it's just a screen issue, because as I said, I can actually use my phone fine, but I have this flickers and ghost images. These ghost images are actually the most annoying problem when they happen.
To do some testing, I downloaded a burn-in test app to check every colour, and I've noticed that most colours work fine, but just the white and grey were weird? Like, maybe in the top of the screen the colour wouldn't show, but in the rest of the screen it was working.
Other times, the screen starts to display "colour lines" in front of everything, and after some time they disappear.
Want I want to know is, is this a hardware problem, or software? I guess it's hardware, I'd find it weird to be software.
If so, changing the screen would fix this ghost images and flickers? I haven't tried changing a phone screen before, but I can just buy one and there are videos for my model on how to change the screen so I could do it.
What I want to know is, how to fix this, and If replacing the screen would do. I honestly am against the consumerism trend of throwing away phones, so I at least want to try.
Thanks.
adrianjaramillo said:
I'm new to this forum, so I posted in general this problem I'm having since I don't know which category fits for this.
I know this forum is for software-related topics, but I've found hardware questions as well, so I guess this should be fine.
Basically, some time ago my phone started having this problem, which I suspect is hardware related, which is what they call screen burn.
Funny thing is, people usually say this problem is permanent, but in my case it's just temporal.
Sometimes my screen is working just fine, and suddenly starts flickering. If I try to switch apps, a "ghost image" of the other app stays there in the background, and until the screen refreshes, it takes time, or maybe I have to switch my screen on-off again, etc.
Another times It turns white, but I still can use my phone properly.
I've identified it's just a screen issue, because as I said, I can actually use my phone fine, but I have this flickers and ghost images. These ghost images are actually the most annoying problem when they happen.
To do some testing, I downloaded a burn-in test app to check every colour, and I've noticed that most colours work fine, but just the white and grey were weird? Like, maybe in the top of the screen the colour wouldn't show, but in the rest of the screen it was working.
Other times, the screen starts to display "colour lines" in front of everything, and after some time they disappear.
Want I want to know is, is this a hardware problem, or software? I guess it's hardware, I'd find it weird to be software.
If so, changing the screen would fix this ghost images and flickers? I haven't tried changing a phone screen before, but I can just buy one and there are videos for my model on how to change the screen so I could do it.
What I want to know is, how to fix this, and If replacing the screen would do. I honestly am against the consumerism trend of throwing away phones, so I at least want to try.
Thanks.
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Click to collapse
Hi...
so it could be software or hardware based.
first i would make a full backup and then try to completly reset the firmware and check if the issue is done
if not...it could be the screen or the mainboard or the connector to the mainboard.
at first i would try to change the screen to a new one. mostly the screen have problems. if that not work it can be the mainboard...for a buying a mainboard i would look at ebay for a completly damage devices just to remove the mainborad there and to buod in to your Device
hope that helps you
solong
speedson
speedson said:
Hi...
so it could be software or hardware based.
first i would make a full backup and then try to completly reset the firmware and check if the issue is done
if not...it could be the screen or the mainboard or the connector to the mainboard.
at first i would try to change the screen to a new one. mostly the screen have problems. if that not work it can be the mainboard...for a buying a mainboard i would look at ebay for a completly damage devices just to remove the mainborad there and to buod in to your Device
hope that helps you
solong
speedson
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Click to collapse
I commented my problem with a friend who studied CS with me, and he told me after seeing the phone that in his opinion it's likely the screen. I think so too.
It's ebay a decent play for buying a screen? Or better aliexpress? I've seen screens for huawei p10 lite in aliexpress
adrianjaramillo said:
I commented my problem with a friend who studied CS with me, and he told me after seeing the phone that in his opinion it's likely the screen. I think so too.
It's ebay a decent play for buying a screen? Or better aliexpress? I've seen screens for huawei p10 lite in aliexpress
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Click to collapse
Hi...
Idk if ebay or Alie would be better. I would take a look wich one could send it fastest to me and if it is original Part or from another manufacture.
Hello, I've been experiencing same kind of issues in recent months and I'm interested how the story continued and did fixing the screen was the solution?
Thanks in advance.