Now I know this problem has been asked before but after some extensive searches I can see there are no clean fixes for this.
My Nexus 4 (Android 5.0.2 LiquidSmooth ROM) has started showing ghost touches at the bottom part of the screen. I know there are a lot of explanations available such as digitizer not working, battery being too old etc. But I'm not interested in these hardware issues/fixes.
I have isolated the area of effect as the bottom ~160 pixel height of the device. I then proceeded to use the ADB shell command
wm overscan 0,0,0,160
which removed that portion from the UI. This fixed the effects these phantom touches have on the apps or UI. But a problem still remains that these ghost touches happen in too many numbers and this leaves other usable areas of the screen insensitive to touch. I am guessing this is due to the multi touch limit being reached in that bottom unused part itself. Multi touch testing apps dont pick up touches on the top part of the screen
So my question is, is it possible to remove a part of the screen from the System itself? Ideally a thick black bar of unused area, leaving me with a shorter yet fully working screen? Or atleast is it possible to turn off touch response in that lower part of the screen so that it doesnt max out the multi touch limit?
My Nexus 4's is same too
I think, that ghost touch will work from Screen Digitizer. My Nexus 4's screen digitizer was non-LG's digitizer, it was fake. I need to change that digitizer
I workaround this issue avoid using undervoling in the kernel, and avoid lower temperatures in phone, yes as you read ... this issue give my crazy when my phone was to hot and I tried to cold my phone using one ice cube in screen and back, the temperature of the phone down but ghost touches appears again, so played some videos to warm the phone again and dissapear again.
Don't ask me about how it works, or relation with screen, digitizer or battery, I don't understand but help me to workaround the issue.
Related
well my htc hd2 is using android and using it a year by now and notice that the upper left of the screen is not working?is it the lcd or digitizer or just need to align it?i dropped this many times(up to 5 times i think)but no damage on the housing and it looks new,and it is annoying in some games cause it wont work and i notice a very little red dot on that part.....pls help
If you lost sensitivity and the screen does not respond to touch, then it's a digitizer, if picture is distorted or, as you describe, a red dot appeared where it shouldn't be - LCD, sounds like both in your case. I am not quite sure how it doesn't work in games or whether the problem is present in normal screens. Alignment is a procedure to tune and correct mistakes in touch recognition or to make touch more precise on resistive screens.
I suggest replacement of your LCD + DIGITIZER. Dropping it many times may have caused it too, even if housing looks perfect.
Hi all,
I have replaced touch layer in my hd2 and buttons. Everything was great, but sometimes HD2 has very strange behavior. For example, Iam at home screen, just scrolling thru apps, when suddenly touch layer starts to recognize touches in upper part of display. This can happen even when I dont have any fingers on phone ... If I want to stop this I usually put multiple fingers on layer, or just go to lock screen. So Iam wondering if my touch layer isn't somehow broken, or if is there any short circuit or something else? Do anyone of you have same experience as me?
Thx for all tips
Trying to lower the top bar is practically impossible... Anyone else has this problem? Could this be a problem caused by the screen protector?
Noam23 said:
Trying to lower the top bar is practically impossible... Anyone else has this problem? Could this be a problem caused by the screen protector?
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I have the same problem but my problem is not limited to just the top part. i am having trouble with taps and swipes across the whole screen
Me too, I noticed my knock on wasn't working at all, but knock off worked fine...Then I noticed that if I drag the notification bar down really slowly about half inch down it just snaps up as if I lifted my finger, almost like its not detecting touch anymore when it reaches that section. My phone has worked great for 3 weeks, what could be causing this all of a sudden?
Is there a charger in the dock?
Lots of devices get touch screen issues when charging. (I have to double tap everything on my Tablet when it's charging). Some have bigger issues than others. Depends on how good the battery is shielded.
I almost never notice it on my G2 though. Only a tad. Depends on how stable the currency is in my house (The problem is almost non existent at my home. At my mom it's just like my tablet. Have to double tap everything)
Could also be because of a magnet or something in the car dock.
My Device was working fine until Yesterday I began to have ghost touches and was having trouble even to make a call... I thought it might be due to My Tempered Glass Screen Protector so I removed it but still I have the same issue... I tuned on the option to show touches and found out it was only on the bottom end of the screen (and sometimes My recent key is also triggered)... I felt it to be affecting TWRP as well... What could be the issue and how can I solve it???
SingularityHRT3 said:
My Device was working fine until Yesterday I began to have ghost touches and was having trouble even to make a call... I thought it might be due to My Tempered Glass Screen Protector so I removed it but still I have the same issue... I tuned on the option to show touches and found out it was only on the bottom end of the screen (and sometimes My recent key is also triggered)... I felt it to be affecting TWRP as well... What could be the issue and how can I solve it???
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Click to collapse
are you using oily hands on the device too often?Beware the screen digitizer and other display components of this phone are of cheap quality(it is xiaomi after all)you will most probably have to get your full screen replaced for around 2.5k.
Hello everybody,
I have a accidentally cracked Pixel 4. The Display cracks after it falls from around one meter height. I decided to fix the screen and buy a new one. It seems to be not an original Bit the board of the new and the old screen seems to be exactly the same. I opened the phone and replace the screen without any damage. After the screen was inserted I test it if it woks. Success! Everything works (I not tested the touch Funktion yet) after I build most of the things together I give it another try and I recognized that the touch Funktion does not work. No matter how hard I press or hold the connector down etc. I tried many things also a Hard Reset. I never seen such problem before. And my question is: is this the screen, the phone or a software problem? And how I can fix this issue? I am completely confused because I fixed many phones but something like this is new. Regularly the complete Amoled does not work.
If I go to the left upper corner, there is some movement in the screen and this also stays if I release my finger (video).
Video 1
Video 2