Help with ghost touch! - Lenovo Vibe K4 Note Questions & Answers

I have a Lenovo Vibe K4 Note. Its been more than a year since I bought it. Some day before it started to develop white spots on the border of the screen. It expanded and covered the whole upper half of the border of the screen(only the border). Then in the white spot there started to appear silver shiny thing which appeared to be like a foil or something. But this didn't got any serious problem until my screen started malfunctioning. Suddenly when I was handling the phone it started touching here and there in the upper half of the screen automatically. Its been 2 days I am having this problem and at this second the situation is that I can't even unlock my device properly l because when I go to enter the pin it automatically start typing. It's not two or three touches but its way much faster auto touch. About 6-7 touches every second are happening. I need help. Is it software problem or a hardware problem? How can I solve this?. BTW it is working on Android 6.0 (ROW S232). Any help would be greatly appreciated.

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Is this the forum for repair advice? Digitiser recalibration

I dropped my phone and the screen now doesnt respond properly: The hardware DID successfully upgrade to the XDA ROM. But touching it causes the backlight to go on, - but most of the keys dont do what one would expect them to do: The phone turns on with a reminder from the calendar on the screen which wont DISMISS or CLOSE. Pressing on the windows logo and then on the phone key causes the calendar to come up and I am not sure which numbers are entered when I do manage to get the phone to come onto the screen (none of the right hand numbers seem to work at all). Does anyone recognise these symptoms and/or could they just show that my SX-56 needs the ROM RE-flashing? I should add that pressing the Master Reset button with this ROM in place seems to make the phone shut off and then when you restart it, all of the data remains in place. I wonder if there is any possibility that the XDA ROM has prevented the reset button from working normally?
A user on another forum said that to him, '"Sounds like the digitiser is up the swanee - have you tried recalibrating it?"
10-12 vertical black lines started appearing to the right hand edge of the screen. Sometimes they are there, sometimes not. THere is usually at last one there somewhere. At about that time the screen stopped responding as I mention. Today the left third started displaying the same veritcal lines, though spaced quite far apart (about a millimetre). Screen doesn't APPEAR cracked: Does this sound like a digitiser and if so, how do you recalibrate it please or is there a link to somewhere on the XDA site which I cant find which might tell me? Or could it be the cable is loose in the circuit board? As you touch the lower right hand corner of the metal casing where the vertical lines are, those lines flash (the right 10 or 12) on and off. And every coloured bar everywhere on the screen or word of text has vertical lines on it (the white parts don't)??
Someone on ebay has said that his phone "fell from my pocket and onto the carpet and the screen cracked, I then used it for about a week" "I sold the screen to someone cause the wanted the touch pad part of the screen for there phone". and wonder what it was he sold or which part can be replaced on it? IS there a touch part and a screen part on this phone?
To be honest, itsounds like you have brocken a connection somewhere between the LCD and the gfx output, probably not possible to repair yourself.
I wonder where the break would be?
I thought that might be the case: I wonder if it would be worthwhile trying to get another screen?
I should probably try to take the unit apart and see if some break somewhere can be identified if it is a break as opposed to some electonic part having failed. It SEEMS to be in the lower right hand corner?

[Help] Black screen

Hello good folks,
I would like a bit of help with sorting my phone out. As of Thursday morning (2 AM or so) my phone has a black screen. The phone switches on, the touchscreen works (I can unlock it, put it to silent, hold the power key and tap the places on screen that would normally switch it off to do just that), the volume keys work, I can receive calls, the back light works.
Everything is as it should be, but I cant see a damn thing!
I should note that this happened once before, about a month ago and a few hours later it was back to normal. Also, I have noticed over the past few months a very small black circle at the top edge of the screen, about half a centimetre in diameter.
Please help!
Kindest regards.
It's the first time I read such an issue, your screen's probably defective.
To eliminate a probable OS issue, does the bootloader appear flawlessly ?
No, nothing appears at all. The screen is completely black at all times!
Your screen is malfunctioning, I don't know what's causing it and I don't know if you can fix it yourself either.
I think you are better off sending it back, if still under warranty.
Otherwise, ... ?
This just happened to me NOW....I'm waiting hopefully it will fix itself as i hear the HD2 heals itself LOL

[Q] Replaced screen problems (video)

Hi all ,So the story goes is I had my cracked screen replaced by my insurance 2 months ago. My new screen was fine up until a few week ago when this started happening..
youtu.be/lXv5xBA-r9E[/url]
Basically when I press hard on the top right of the screen I get ghost touches all over the screen. It also happens all the time when I use a case because of the pressure on the top right part of my screen.
I noticed that I can get my fingernail in between the 2 parts of the phone on the side. I really don't want to go a month without my phone again so I'm reluctant to send it off to insurance. Has anyone had this problem? Should I try a phone repair shop? Does this happen if a screen isn't fitted properly or is it another problem? Thanks
Seems like a faulty digitizer
More info... The screen works fine when I press it normally. It only goes crazy and when I press slightly harder or if there is a case on

Touch screen acting weirdly after fall (Galaxy Tab A (2018, 10.5) SM-T590)

Hello,
My tablet dropped on the floor yesterday. Small fall, and it has a cover. There is no visual damage, but ever since, the touch screen acts weirdly. Works on top and bottom, but not in the center area. So, I have a hard time to even shut it down, as the Stop button is in the center of the screen. I succeeded in rebooting and the problem was resolved for maybe an hour. But then it came back and now even after rebooting, touch screen is still faulty. Also, the screen will turn on by itself every few minutes, even if I don't touch the top right side button. Never happened before the fall...
What can I do to fix this? Is there a software fix? Is it hardware? If so, how much is it to change a touch screen? Am I SOL and will have to look to buy another tablet? This really sucks anyway as this tablet was still perfect for my needs.
Thanks for any input.

Pixel 4 display working but no touch

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

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