Touchscreen issues - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

Hi there, I bought a Xiaomi Mi 9T Pro 6/128 recently. I instantly noticed that if I'm using full screen gestures I have some troubles doing WhatsApp audio recordings. Single press is recognized on the bottom corners, but if I do a long press, my system doesn't recognize it.
I thought it was a gesture's "feature", but I have investigated a little and I found an issue in that part of display, even with gesture disabled (so, using softkeys).
I didn't find anything about this issue, but it's very annoying because I am not able to do WhatsApp recordings, because long press on recording button isn't recognized at all.
I also uploaded a video in which I show the issue
Tell me if you have the same problem, or if there are any solutions.
Single press works ok in the bottom corner, but long press isn't recognized
Link to the video:
https://youtu.be/cSIi8m2WwyA

I can confirm that same issue is present on my phone. But I would say its rather a bug with MIUI/Whatsapp as I can confirm that touch is working perfectly on that part of the display in CIT or Other apps.

Try it. A single press would work very well, but long press on the same area won't be recognized
You can check it with any app that lets you draw/test touchscreen

I've noticed this on my device too. Is it a hardware or a software issue, if its software issue can anyone confirm if this issue exist on custom roms too.

GTtron816 said:
I've noticed this on my device too. Is it a hardware or a software issue, if its software issue can anyone confirm if this issue exist on custom roms too.
Click to expand...
Click to collapse
I'm using a custom ROM since April (EvoX) and I can confirm you that the issue still persists. Don't know if it's vendor related, or it is an hardware issue.
The only good thing is that with Android 10 and gesture bar (on miui 12 and custom ROM also), it's easier to record voice messages since gesture bar takes 1-2 mm of the corner, so less "defected" space for touchscreen

Related

Do you also face touch problem in your K3 note

I'm facing a very annoying problem in my k3 note, that some areas of screen randomly stop responding. In my phone its mostly limited to bottom right part of my screen where backspace on keyboard is located. Rest of phone is responsive except this region. Restarting the phone fixes it temporarily.
But strange part is it doesn't happen on all ROMs, I first noticed it in some AOSP MM ROM, then i think it was Andronium VUI ROM (based on dev 1628) and now on s433 rom which leads to believe its some software thing not hardware thing.
Are there others also which face similar issue ? Any possible solution except switching to different rom ?
Mafioso said:
I'm facing a very annoying problem in my k3 note, that some areas of screen randomly stop responding. In my phone its mostly limited to bottom right part of my screen where backspace on keyboard is located. Rest of phone is responsive except this region. Restarting the phone fixes it temporarily.
But strange part is it doesn't happen on all ROMs, I first noticed it in some AOSP MM ROM, then i think it was Andronium VUI ROM (based on dev 1628) and now on s433 rom which leads to believe its some software thing not hardware thing.
Are there others also which face similar issue ? Any possible solution except switching to different rom ?
Click to expand...
Click to collapse
Yes, I have this problem with the screen also. I've heard from others with similar issues on other forums. It seems it is a hardware fault or possibly an issue with the way software interacts with the screen controller. In my case the screen is periodically unresponsive around the letter E or R on the keyboard and I have to tap the area with greater pressure. Sometimes it gets very buggy and very frustrating.
There is another possibly related problem when scrolling a web page or dragging - larger areas of the screen become unresponsive. Turning the screen off and then back on fixes the problem for the next 2 or 3 minutes. This issue has also been fixed for me with the kernel from daniel_hk here http://forum.xda-developers.com/k3-...rnel-dc-mtk-m1-kernel-vibeuiv3-51631-t3483573 - the only proviso is you apply it to Vibeui 1631. So while the scrolling issue seems to be fixed, the unresponsive areas around letters E and R on the keyboard remain.
I've noted the problems above would temporarily go away after flashing a new ROM however they eventually return. I've considered buying a new screen but not really sure if its a hardware or software issue - possibly both!
EpicSauce said:
Yes, I have this problem with the screen also. I've heard from others with similar issues on other forums. It seems it is a hardware fault or possibly an issue with the way software interacts with the screen controller. In my case the screen is periodically unresponsive around the letter E or R on the keyboard and I have to tap the area with greater pressure. Sometimes it gets very buggy and very frustrating.
There is another possibly related problem when scrolling a web page or dragging - larger areas of the screen become unresponsive. Turning the screen off and then back on fixes the problem for the next 2 or 3 minutes. This issue has also been fixed for me with the kernel from daniel_hk here http://forum.xda-developers.com/k3-...rnel-dc-mtk-m1-kernel-vibeuiv3-51631-t3483573 - the only proviso is you apply it to Vibeui 1631. So while the scrolling issue seems to be fixed, the unresponsive areas around letters E and R on the keyboard remain.
I've noted the problems above would temporarily go away after flashing a new ROM however they eventually return. I've considered buying a new screen but not really sure if its a hardware or software issue - possibly both!
Click to expand...
Click to collapse
hmmm it's interesting that different people have different areas of unresponsive screen. It seems more like software issue to me, as I started noticing this issue more on newer dev roms only. Today, I've reverted to dev ui 3.1 1622st as I remembered it didn't have it. Will report in couple of days of how it goes, so far haven't noticed it.
I have been facing touch problems for quite some time on the ROW version of the ROM s433. The touch starts acting weirdly, i.e random things start getting touched automatically and this happens mostly in the lower half of the screen. I turned on the show pointer location option from developer settings and it shows the pointer stuck at one point on the screen showing erratic behaviour. Turning the screen off and then back on solves the problem but very temporarily. Restarting solves for a longer time but the problem pops back up.

Touch issues / Sensitivity issues after Nougat update

Okay so I wanted feedback regarding this whether someone else is experiencing this or not.
I have gradually observed during the last few days that a lot of my touches to click have gone unresponsive in Nougat. Initially it was something that I hadnt quite noticed but slowly the trend became obvious. Now dont get me wrong, this would happen a few times here and there with lollipop and MM as well, but the rate is far higher now on Nougat. Especially when typing on the keyboard this means mis-spelled words, missed letters, and accuracy is far worse now.
Has anyone else observed this or is it just me?
Just got my xcover 4 with nougat installed i have the same issue.
The sensitivity is low and i need to press a bit higher finger force to respond.
Even with sensitivity (glove mode) set to on things get worse.
I'm seeing the same thing. What is strange is that I'll see the button highlight/depress, but no action occurs. This is on multiple apps.
On what device/OS?
Sprint Note 5 on Nougat
Did you try gloves mode? Does it work?
the same for me on 920cd and the same iusse using S pen
I contacted samsung Greece about the existing problem.
I reported the problems me and you guys have and the tech support told me that your problems exist because you did not factory reset the devices before upgrading to nougat.
Anyone tried to contact samsung about the problem?
They dont know anything about it.
facing same issue screen lagging in note 5 sm-n920s also tried custom rom but still lagging in typing and scrolling on facebook
I have the same problem on my xcover 4 here!!
When I run the the touch screen test, touch screen responds well, but when I want to write a message or to scroll the home screen Its very annoying. It looks like software problem.
please help
Hi guys.
I have 2nd piece of Xcover 4 SM-G390F (first was change by seller for new one) and had the same problem. First 2-3 days all work perfect.. I have installed my applications, work perfect for two days, but after this... --After wake, display react only in centre area, 1 centimeter from display border no reaction or react on xxx touch. After few seconds (20-30) display react on full range, but with lags... So... I go for support to Samsung official at CZE.
Support tells me, that they don't know about this problem, that I'm 1st who has this problem... And some other bull... about unofficial sell and any other. So I post them IMEI and they let me know, if my distribution is official or not, and we'll see what next. They recomend me to go to service center, where somebody looks on my SM. So I see tomorrow.
ROM - official Android 7 Nougat from start using (not updated from other version)
Deleting apps - no effect
Safe mode - no effect
Factory reset - no effect
Apps to calibrate screen - no effect

Problems with Compass and Rotation sensor

Hi there,
I just bought a used Mi 5 to replace my previous one which I lost and I saw it as a good opportunity to try out the MicroG fork of LineageOS. I flashed the newest firmware and installed the OS and it's running quite well all in all – however I have two weird problems:
1. When using mapping software my compass seems way off. Is there an easy way to calibrate it?
2. (Potentially related) The device screen sensor is flipped when held horizontally. The screen orientation seems correct when held as usual, but as soon as I try to take a picture in landscape mode they turn out flipped upside down. Can anybody explain this? Can I overwrite this somehow?
Thanks a lot for any help
PS: I can't edit the title anymore so I'll add this as a separate paragraph. I've had problems with losing my signal at random intervals since I've had the previous Mi 5, with this one it's no different. Is this a known problem for Lineage-based ROMs? Any way to improve the situation there?
Hm.. so I tried the following firmware images from github/XiaomiFirmwareUpdater/firmware_xiaomi_gemini/releases (can't link to this unfortunately):
fw_gemini_miui_MI5Global_V9.6.1.0.OAAMIFD_e569ca4e32_8.0.zip
fw_gemini_miui_MI5_V9.6.1.0.OAACNFD_996b4bcbff_8.0.zip
fw_gemini_miui_MI5Global_8.7.19_7a80214a95_8.0.zip
They all show the same behavior regarding to the camera orientation bug. It's independend of the camera app in use. I also tried enabling and disabling the Camera2 module in Magisk, which did not seem to have any effect. I found a similar issue for the front camera after enabling Camera 2, but this seems to be unrelated.
Does the same happen with non microG versions of LOS?
Have you already calibrated the compass using the gestures in all 3d axis? Search for it on youtube.

mi 9 multi touch problem

My mi 9 seems to be able to only detect 1 finger. Completely wiped phone and problem still persist. Anyone with same issue or able to fix issue?
I have the same problem. Have you found any solution?
youtube.com/watch?v=dLa-oHLig7U
I have that same problem. Could you help
Happened the same issue to my Mi9. Multi touch was working normally but suddenly it stopped working while I was zooming on a web page. Then I made a factory reset but still didn't work. Today I updated to Miui 12 hopping the problem would be solved but still no success. I think this bug is related to Android 10 as I saw elsewhere someone rolled back to Miui 10/Android 9 and things got to normal. On the other hand this is not a hardware failure for sure since multi touch keeps working normally on apps running in game turbo mode.
So, has anyone found how to kill this annoying bug?
Thanks for any help.
ive been searching everywhere how to fix this. i already email xiaomi about this issue. still didnt find clue how to fix this bug. still hoping that xiaomi will fix this issue.
This issue is a shame for Xiaomi!
As far as I know the only solution is to downgrade to Miui10 and stuck on this version or take the risk to upgrade to Miui11 (not recommended for obvious reasons) or the fresh new Miui12. So far I've been using the "turbo game" thing to workaround the bug. I had to install some alternative apps from Google Play (such as Chrome Beta, other gallery app, Google Maps Go...) to use instead of the stock apps so I can use them with "turbo" and get pinch to zoom working. This is not the best way to solve the issue -- the ideal is to get multi touch back working again without the need to resort to any tricks -- however it works very well. Maybe one of these days I'll get some patience to setup the good old Miui10 again...
i also have this ghost touch on the upper part of the screen. it came same time as the multi touch issue. it cant even fix by game turbo. i cant even play games normally like moba or fps game. i dont know if its just me have this ghost touch issue. its a big shame for xiaomi flagship phone?
No news about this issue? Everything works fine with Pixel Experience in my MI9 but multitouch. I remmember I solved another problem (auto-rotate didn't work for the display) and I solved it flashing only last version of "persist.img".
Same here bro!
I bought my Mi 9 in February and everything worked well. I also upgraded to MIUI 12 with no problems at all, then suddenly multitouch stopped working.
If I flash Pixel Experience will the problem be solved?
03jack said:
Same here bro!
I bought my Mi 9 in February and everything worked well. I also upgraded to MIUI 12 with no problems at all, then suddenly multitouch stopped working.
If I flash Pixel Experience will the problem be solved?
Click to expand...
Click to collapse
No way, Installing PE doesn't solve the problem.
I'm going to try it with new kernels and FWs.
ommerus said:
No way, Installing PE doesn't solve the problem.
I'm going to try it with new kernels and FWs.
Click to expand...
Click to collapse
Let me know if it works
03jack said:
Let me know if it works
Click to expand...
Click to collapse
It doesn't work at all... nothing... so tired of this...
ommerus said:
It doesn't work at all... nothing... so tired of this...
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Click to collapse
Try to flash MIUI 10... I read somewhere it should work, because MIUI 10 is built on Android 9, which doesn't have this issue
same i have this issue, i tried miflash. the only workaround are miui 10 and game turbo method.
also i have this nonresponsive part of the upper screen, right where most game analog button placed. idk if this "dead touch" is connected to this multitouch issue
This was the first and probably the last Xiomi I bought. Back to iOS. Bought a second hand iPhone 11 in mint condition. Working rock solid! Crap Mi9!!!
renz555666 said:
i also have this ghost touch on the upper part of the screen. it came same time as the multi touch issue. it cant even fix by game turbo. i cant even play games normally like moba or fps game. i dont know if its just me have this ghost touch issue. its a big shame for xiaomi flagship phone?
Click to expand...
Click to collapse
Gnonymous7 said:
same i have this issue, i tried miflash. the only workaround are miui 10 and game turbo method.
also i have this nonresponsive part of the upper screen, right where most game analog button placed. idk if this "dead touch" is connected to this multitouch issue
Click to expand...
Click to collapse
Have the same problem here!!!
Upper screen DEAD
Annoying ghost touch on upper screen
Have to type multiple times because It keeps ghost touching...
Can't sell the phone, because of these issues...
Miss my Galaxy note
Is there a fix to this issue now? GameTurbo enhances the touch so that multitouch works. There must be a fix to this.

Touch issue after December feature drop

Hello there!
I'm experiencing a weird issue after the latest update from December 2020. Since then, my back button (or technically the lower part of my screen) is very irresponsive and does not register touch input. I uploaded a video on Youtube to showcase the issue:
What you can hopefully see is that the back button is very responsive when it comes to horizontal movement; touching far left or far right of the button is still registered as input. However if I touch just slightly below (or sometimes even on) the icon, it does not register my input. This includes the fact that the system does not register the touch at all (as you can see by the active developer tool). This is very frustrating as it also happens with the other two buttons. It seems as if Google has incorporated a kind of "palm detection" or "accidental touch prevention" on the far edges of the screen.
I already activated the "High sensitivity mode" of the display since I have a screen protector installed. However, before the update the issue was not apparent, so I'm convinced the screen protector is not the issue.
Does somebody also experience the issue or may even have a solution for this?
Cheers!
WookieCookie said:
Hello there!
I'm experiencing a weird issue after the latest update from December 2020. Since then, my back button (or technically the lower part of my screen) is very irresponsive and does not register touch input. I uploaded a video on Youtube to showcase the issue:
What you can hopefully see is that the back button is very responsive when it comes to horizontal movement; touching far left or far right of the button is still registered as input. However if I touch just slightly below (or sometimes even on) the icon, it does not register my input. This includes the fact that the system does not register the touch at all (as you can see by the active developer tool). This is very frustrating as it also happens with the other two buttons. It seems as if Google has incorporated a kind of "palm detection" or "accidental touch prevention" on the far edges of the screen.
I already activated the "High sensitivity mode" of the display since I have a screen protector installed. However, before the update the issue was not apparent, so I'm convinced the screen protector is not the issue.
Does somebody also experience the issue or may even have a solution for this?
Cheers!
Click to expand...
Click to collapse
Yes, I've noticed the same thing. Seems to be only the back button.
This is a widespread issue that has been reported by many. So far there is still no update from Google. I am running November build without any touch issues. Google support forum with lots of people reporting.
same problem for me, I hope it will be fixed soon
Looks like this is fixed in the January, 2021 release that came out today!
This issue was NOT fixed in the January release. I and many others are confirming this. Google has yet to fix a major touch-screen bug, almost 2 months after the issue was brought up.
Mine was definitely better in the January release, but yeah, still having the issue here and there (especially when an app is heavy on the processor). This press release should help out: https://www.androidpolice.com/2021/...ssue-can-make-navigation-buttons-hard-to-use/
Same here. But on another side, why do we have to wait another month for a known issue?

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