Ghost touchscreen - Redmi K20 / Xiaomi Mi 9T Questions & Answers

Hi to everyone.
From 1 week my Mi9T has a ghost touchscreen.
How can i resolve it?

What do you mean by ghost touchscreen?

BranchPrediction said:
What do you mean by ghost touchscreen?
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Screen responds to 'touches' you didn't actually make - like, there is a ghost touching your screen

oh, well i dont know how to fix that sorry. But maybe you touched the edge of the screen accidentally?

i have the same problem for about a week now! did you find any fixes?

me too

Me to. I have tried every possible solution. Eventually whole screen has been replaced on warranty.

No guys i dont find any solution. And now? How we can resolve it?

Pasquale91fg said:
No guys i dont find any solution. And now? How we can resolve it?
Click to expand...
Click to collapse
replacing the display is the only solution

i have the same problem, ghost touches in the upper side, near clock.. specially when phone is hot or i press the top of the phone

Im so angry ??? bc we have this phone not usable!!

It's a hardware failure. Faulty display. If you suffer from "ghost touches" you should back up the data you want to keep, and return your Device to where you have bought it from as it might still fall under warranty (depends op what the cause is, and where you live). This can also get worse over time making the screen partially unusable (which was in my case). contact the seller, or contact customer service from Xiaomi.
I suffered ghost touches at the beginning of December (owned the Device for at least a month). Tried every software options i found around internet that could resolve it, but it was to no avail. I proceeded to unlocking the bootloader, install TWRP, flash a custom rom... For a couple of days i was fine. After those few days the top part of the screen (the part with the status bar) rendered unusable, on custom rom and stock miui. Tested it and it seemed that the area increased and also decreased from now and then, which is strange. After contacting my seller they agreed on sending it back including screenshot and the tests i ran. 1 day after they received my device they contacted me to say that it cannot be fixed (or at least they didn't seem to bother as the phone's pricerange is low) and i am receiving a complete new one (this was in the weekend btw). After that weekend on monday i received the new one and it's running better then ever, even the fingerprint is much faster.
Now just as a warning, I don't say you still have warranty. i live in the Netherlands where unlocking, rooting and all that does not void warranty, and returning a product is very easy to do. But in other parts of the world the companies can screw you over so you'll have to check that.

For those who are asking what is it, juste have a look at mine in dev mode to show the touch : https://www.youtube.com/watch?v=-ZApYI9otJI

This happens to me only when I'm charging the phone, still annoying, , I think it's something to do with the voltage and could be fixed with a software update.

Related

help. My screen keeps misaligning very often.

My touch screen has been getting out of alignment quite often. 3 or 4 times a day. I'll go to use it after leaving it on standby, and the touch screen alignment will be off by a half centimeter or more. its making very difficult to use. Sometimes very difficult to even get to the settings screen to realign it. I'm using a screen protector and to use my fingers instead of the stylus often. could have of this be having an affect? or does anyone have any idea whats goign on? thank you for any help you can give me.
Dan
I had a similar problem as well. Its kinda scary. Do you think its a software error? or could it be hardware *gulp*
I had this problem with some devices I issued out at work. I put screen protectors on them, and all kind of weirdness happened, and the screen getting out of alignment was one of them. I removed the screen protectors, and the problem went away.
Wizard platform has often that claim from many users. I'm not sure if working without screen protector is suitable for you and don't know it will help. In my case it did not.
The problem of kJAMs is related to the screens HTC used on this version. Unfortunately there is not software remedy. Some users attempted to change their devices under guarantee. Some are telling newer ROMs make the error less frequently.
You may also use "fire button + messaging button" combination as a shortcut to screen alignment page if you must live with this. Better than nothing ?!
fixed my qtek 9100
Well my wizard used to go out of alignment a lot. But I basically ruined it when I stuck it in my golf bag one day and let it get partially crushed while half-open...
The screen started to flicker a lot (in addition to not registering touch inputs). after a week it was unusable except by me since I knew where to push to get it to work.
Anyways, I gave up and asked around Hong Kong for people who can fix these PDAs. I found a store that offered to bring it to a specialist (no name given) for $380 hkd (~$50USD). Figured I had nothing to lose.
It actually works almost like new now. The slider is tighter, and the screen doesn't go out of alignment at all. I'd almost say its perfect except the "specialist" "broke" my volume slider when fixing it. Its not major so I decided against taking it back to the store for further repairs (3 month warranty on their work). But it took 3-4 days for them to fix.
I figure someone with the screwdrivers and stuff can probably fix your problem. But I didn't have the guts to try it myself...
Four things you can do to help
1. After time dust etc... gets under the rim of the screen and adds to the misalignment problem. Get a piece of paper and put the corner under the rim and get all the dirt out.
2. Sometimes software causes the misalignment - in my case it was using vjtoggletoday - so check or your software particular ones that change your today screen e.g. wisbar etc...
3. You could do a hard reset and try device in factory state for a while to see if it is a software or hard ware problem
4. Update to the latest rom.
Thanks for your help guys. Even though i didn't like your answers. I tried cleaning dust from under the border of the screen. It worked well for now. but it hasn't been more than 12 hours. I hope it continues. If i cant get it to stop i might have to sell my phone on ebay. they seem to go for only 50 dollars less on ebay than i payed for it in the first place. I hate to ask this question. but what could i replace this phone wiht that wont have this problem. and has windows? Basically what would you suggest as a replacement. And not the TytTn because i dont think i'll be able to afford that one.
Thank you.
lets hope that i dont have to fish dust out of my phone every day.

Different manifestation of Screen Alignment issue

Hi, going through the emails on this list was indeed very useful. I bought an iMate JASJAM in January 2007 and it started giving me a weird problem with the screen.
The phone was working perfectly OK till Mid Feb when I started noticing that any application I opened (including phone or contacts) got closed automatically within a second. I observed carefully and saw that the 'X' on the top left corner of the screen was probably getting clicked on its own. I suspected it is most probably a screen problem and took it to the iMate service center. They promptly replaced the screen in 2 days.
It worked fine for 15 days before I am seeing the problem again. Could someone help me please. I am seriously dependent on email through my phone for my work. Would appreciate any sort of guidance, even if it seems obvious.
My JASJAM is 647XX s/n based
Thanks a ton,
Aditya Deshoande
If indeed the X is getting phantom taps, this is not a screen problem as such. In other words, you could replace the screen time and again and it would recur. The issue is that the screen gets pressre/pressed by the bezel around the screen. The screen is rather stupidly sensitive to touches even below the bezel. Pressure can arise from a slight twist in bezel, from heat expansion and from dust trapped between bezel and screen. You might try the "business card solution" - though it is not guaranteed.
I would also take a backup and do a hard reset. Try the problem apps without restoring the backup. This will identify whether it's software or the SA related problem.
f the problem is still there, I would demand a replacement not a fix, because if something is out of line it's not going to be fixed by swapping screens.
Mike
Thank you
Mike,
Thank you for posting a reply so quickly. I suspected it is not just a screen alignment issue the moment it appeared again. None of the fixes mentioned for the SA issue work. I just wanted to check if anyone has any suggestions to try something. There are no applications installed by me and I have tried hard reset. In fact the crosshair in the align screen application keeps moving without me touching the screen.
The problem is that this problem makes the phone useless because I cannot open the dialer. We need to be extremely careful of what iMate and HTC seem to be shipping out. This is a damn expensive phone to have such problems.
I will request for a replacement but would not be surprised if I am refused and told that it will be repaired since it is warranty.
Let us see if I need to drag them to consumer forum. I will, if the need arises.
Regards
Adi
Good luck Adi - I hope it works out. Yes that jumping around of the cross hairs does prove there is pressure being put on somewhere. Indeed HTC did appear to have largely resolved the SA and SA related problems - but I'm still seeing quite a few.
Cheers
Mike
Heats up during charging
Hi Mike,
Perhaps the problem is compounded by the fact that it really heats up if you charge the phone while it is still in the cover. The one with a belt clip that comes in the box
My screen does not respond to any taps anymore. Which in a way is good because I am at least able to call as well as send/receive emails.
Regards
Adi
Same problem here!
So my Hermes, which just got replaced by Cingular after the "red light..not charging problem" (Thanks for the pointers on that Mike!). But my new unit is also having phantom clicks on the x or in landscape the Start menu kept getting clicks. And I too got the moving crosshairs during screen alignment setup. Now the whole screen is whacked, not repsonding to any clicks.
Cingular are sending out another unit. I love my hermes, but seriously getting worried about the reliability of these units. I really can;t be without my unti working for too long, I'm stcuk having to go back to my SE P900 (with a flaky battery) or my SE S700 which sux.
It is a worry and very frustrating. However, when you get a good one it is well worth it. A hassle I know, but some folks here say they've been through 3/4 before being happy. This is the secret I think, put up with no physical defect and get an immediate replacement. Use a cheap mobile while you wait for the replacement. Most of the 'pain' comes from trying this and that and the other to get the device working and perhaps 6 out of ten times you fail. Use the warranty without hesitation. There ARE good ones out there!
My thought for today!!
Mike

Lower part of screen stopped responding

After 4 months of flawless work, the lower part of the screen (a strip several millimeters from the edge) suddenly stopped responding properly!
E.g., all buttons in this area (including launcher/phone/+ on home screen) either don't work at all, or sometimes activate after a while when strongly pressed with the thumb (orientation doesn't matter).
Just two hours before they responded fine to the index finger.
Also, I've noticed that when I "multi-touch" the lower line in a file browser with two fingers, it works nice! Buttons are too small for that, however
I first tried to restore backup, but it didn't help, of course.
Has anybody had the same problem?? I guess it's a warranty case ...
I would agree, it's probably a hardware problem that you'll have to bring your phone in for service to get fixed.
I'm having that same problem my self, but just now and then. What helped with me is that I press the upper left corner of the phone with my other hand and then the lower part works fine, so i think i should get a new digitizer or its just loose connector.
im having the same problem , i have put up with it for the past few weeks and its driving me nuts now. today i did a factory reset which made no difference , i called htc who didnt sound a bit suprised by my phone call it gets picked up tomorrow morning to go for repair so the question is ... is this a common fault? and how the hell am i gonna cope without my hero in my pocket ?
Yeah happened to mine last week, a few have had the same issue where it's just the launcher bit not responding. Although the good news is that I'm getting it back tomorrow though so it's good times!
I had the same problem with my touchscreen (after a month or so!)
Mine got picked up thursday by HTC and I just checked the tracking site and they just recieved it.
I wonder how long it's going to take
Visited their service center last week.
They've immediately replaced my screen with a new one without any ado. Now everything works as before!
BUT a friend of mine who bought his Hero in January is having similar problems now...
It is a common problem according to HTC.
Mine was repaired in just 10 days.
Same problem here, did htc said anything about this problem? is it a common fault?
thank you
I said it in the post above yours.
ah yes, right, thank you
mach2005 said:
It is a common problem according to HTC.
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Click to collapse
If they acknowledge it officially, couldn't you provide a link please?
i gave mine last week to repair, they returned to me unfixed. on the paper stated that they only updated the software, what a dumb this htc guys. need to go back and tell them again the same story. im wasting my time only for this. wtf
I recently had this problem. The 3 buttons at the bottom of the screen wouldn't respond, took it into T-Mobile who said I'd have it back within about 7 to 10 days... 3 weeks later I got a text saying I could collect my phone...
On the paper sheet it says they've replaced the lens.. Which I can see they have as before I had a miniscule hairline scratch near the top.
They also mention a software update (1.0.0.A6288)
Either way it works nicely now.
I've recently experienced the same issue - the lower part of the screen, the one where the LauncherPro icons usually are stopped responding to touch. If I press really hard it works sometimes, but it's pretty annoying. I didn't sit on the phone or drop it recently, it just stopped working all of a sudden.
Is there anything I can do, as the phone is out of warranty ?
HTC South Africa gave me a new hero after I took mine in for the 3rd time. Hardware problem. Very happy with their service.
i have this exact same problem, is the only solution to send to htc? >_> Cuz my warranty's out already unfortunately... i flashed my hero to CyanogenMod 7 and it seems to have helped, but still not completely responsive... I also have a problem where at times i completely lose control of my touch screen where the spots i touch seem to respond to opposite sides of the screen... anyone else?
Remove battery, Remove sim card. put a dryer on the htc logo for about 40 mins. put the phone under a heavy object. Let it dry for about 15 mins and your fixed.
^ wtf do u mean?... are u just being a gimp...
VillainRocks said:
Remove battery, Remove sim card. put a dryer on the htc logo for about 40 mins. put the phone under a heavy object. Let it dry for about 15 mins and your fixed.
Click to expand...
Click to collapse
i am having the same problem and i badly need to solve it please could u tell me that what do you exactly mean by put a dryer on the htc logo
thanks

Nexus 6P screen no responsive, is it hardware or software?

Hey guys, so a few months ago I dropped my phone and the screen cracked, and I had a local repair place replace the screen for me. Well, the other day, my screen decided to no longer respond to touch but the phone is working fine besides that. (Oddly, when I first turn the phone off and back on, the screen will respond for a few minutes before no longer working.) I took the phone in the place that repaired the screen (they have a lifetime warranty) and they said that they put a new screen on and it still didn't work, so it wasn't the screen and suggested that it was a software issue. I factory reset my phone, and still have the same issue. A few questions:
1. Are they lying?
2. If not, if it's another piece of hardware, will Google warranty the phone since it's within a year, even though the screen has been replaced?
3. I've searched online to see if anyone else has had this problem, and nothing seems to be related to hardware, is it possible that it's software and if so, how do I fix it?
Thanks!
Jokerswild2412 said:
Hey guys, so a few months ago I dropped my phone and the screen cracked, and I had a local repair place replace the screen for me. Well, the other day, my screen decided to no longer respond to touch but the phone is working fine besides that. (Oddly, when I first turn the phone off and back on, the screen will respond for a few minutes before no longer working.) I took the phone in the place that repaired the screen (they have a lifetime warranty) and they said that they put a new screen on and it still didn't work, so it wasn't the screen and suggested that it was a software issue. I factory reset my phone, and still have the same issue. A few questions:
1. Are they lying?
2. If not, if it's another piece of hardware, will Google warranty the phone since it's within a year, even though the screen has been replaced?
3. I've searched online to see if anyone else has had this problem, and nothing seems to be related to hardware, is it possible that it's software and if so, how do I fix it?
Thanks!
Click to expand...
Click to collapse
I would go to dev options and enable pointer location, and see if the information is what it should be.
Could be a grounding issue, the n5x has this issue while charging, the fingerprint required more pressure too.
Backup your ROM and flash Google's image,
Is the screen from a reputable company.
I would go to dev options and enable pointer location, and see if the information is what it should be.
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How would I do that without being able to use the screen? The screen does not work at all.
Could be a grounding issue, the n5x has this issue while charging, the fingerprint required more pressure too.
Click to expand...
Click to collapse
Why does this occur, and how could it be fixed?
Backup your ROM and flash Google's image,
Click to expand...
Click to collapse
I'm already on the stock Google rom.
Is the screen from a reputable company
Click to expand...
Click to collapse
Yes, I currently work for a cellular services company and it's the one that we constantly recommend because we hear good reviews from customers about them.
Thanks for your help so far!

Mi A1 - Crazy Behaviour

My Mum's Mi A1 has been acting up the last 3 months.
Phone seems to have a mind of its own. The problem seems to be with lots of ghost touches. For example, she will open contacts and then it will call someone by itself without an presses.
She says what she notices the most though is that she is unable to type anything properly. Words are all jumbled up and cursor will random move around whilst typing so you end up entering words in the middle of the sentence. This happens on the keyboard in any app and with all different keyboards..gboard, stock and swift
She is on 8.1 July patch and a factory reset has already been done.
Problem was there before the latest update too.
Can anyone help? I'm hoping a custom rom will fix it or does it sound like hardware?
Sounds like a touchscreen hardware issue to me.
Touch Interface i.e digitiser is damaged. Cover it under warranty
Or screen guard if any & test.
Take it to a service center asap
This is a hardware issue and can be fixed under warranty
I did read about there being some software issues but the phone has been reset twice now and received 2 major OTA updates and the problem is still there so pretty sure it must be hardware.
Unfortunately it was an eglobal purchase so I'm going to claim through my Nationwide mobile phone insurance to save my sanity lol

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