Touch screen issues - Google Pixel 4a Guides, News, & Discussion

Since swapping a few ROMs, android 11, now 10, screen has ghost touches when navigating.
Flipping annoying as!
Any fix?

badaas said:
Since swapping a few ROMs, android 11, now 10, screen has ghost touches when navigating.
Flipping annoying as!
Any fix?
Click to expand...
Click to collapse
I have same problem, I flashed custom rom for first time in over a year and then went back to stock and now I have same problem, I flashed factory image and wiped data and problem still there, post fix here if you find it please

I installed February stock Android 11.
Fixed it.
I'm now on latest superior and is ok thank fook.

Any one notice multi touch stops working on stock and custom roms?

miko12312 said:
Any one notice multi touch stops working on stock and custom roms?
Click to expand...
Click to collapse
Multitouch is not working at all with my wife's phone. Literally took out of its box three days ago. Google sucks.

joaquincgarcia said:
Multitouch is not working at all with my wife's phone. Literally took out of its box three days ago. Google sucks.
Click to expand...
Click to collapse
How are you guys testing if multi-touch is working or not?
If multi-touch wasn't working, wouldn't that mean that pinch/zoom would not work because it requires two (multi) touch points?

JohnC said:
How are you guys testing if multi-touch is working or not?
If multi-touch wasn't working, wouldn't that mean that pinch/zoom would not work because it requires two (multi) touch points?
Click to expand...
Click to collapse
Yes as I am having issues when trying to zoom or use to touches at once it will only read one, sometimes going into landscape mode and back gets it back working but will do it again at random , I do have a screen protector and a google case ,but only till recently after the march update it

JohnC said:
How are you guys testing if multi-touch is working or not?
If multi-touch wasn't working, wouldn't that mean that pinch/zoom would not work because it requires two (multi) touch points?
Click to expand...
Click to collapse
I have also tried enabling point location in dev options still only reads 1 touch , also going to android 10 does fix all touch issues, but I'd rather have android 11

miko12312 said:
Yes as I am having issues when trying to zoom or use to touches at once it will only read one, sometimes going into landscape mode and back gets it back working but will do it again at random , I do have a screen protector and a google case ,but only till recently after the march update it
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I am having this issues on my mother's phone, practically since I got it for her (about 1.5 months). Its barely usable for her. Has anything worked for you guys?
Thanks!

Android 11

Having wierd issues with my pixel 2 xl.
Running last Android 11 update.
Currently on custom ROM.
Tried Lineageos 18, pixel experience 11 but same problem.
Sometimes its impossible to text also.
Been happily using my phone from almost 2 years.
Having this issue recently.
Tested without Mobile cover and screen guard.
While typing this, everything seems normal but issue do arises from time to time.
Plz help me out here.
I have uploaded a video name "Pixel 2 XL touch issue" on youtube by username Mohammed Shaikh

msshaikh1717 said:
Having wierd issues with my pixel 2 xl.
Click to expand...
Click to collapse
That is unfortunate, but you are in the wrong subforum since this is for the Pixel 4a.
Your issue belongs to one of the Pixel 2 XL subforums.

Widespread Pixel 4a issue. Uding official Android 10 is the only known workaround that works for multiple users.

Related

[Q] Touch screen stops responding must reboot to fix

Recently two n5 we have in the family started doing the same thing,
touch screen is not responsive (buttons do work) and the device must be
rebooted holding the power button to get it working again.
Quite annoying since it happens couple times every day.
Searched around but didn't find any reports.
Both phones stock, rooted, gravity box and touch control installed.
Any ideas?
Thanks
I'm going to take a wild guess here, But try uninstalling touch control and see if the problem occurs again. touch control has no issues on my phone btw.
zubsz said:
I'm going to take a wild guess here, But try uninstalling touch control and see if the problem occurs again. touch control has no issues on my phone btw.
Click to expand...
Click to collapse
Thanks for reply!
What kernel are you using with touch control (Franco 33)?
It was working perfect for us with Franco till about rev 29, after that we got problems with graphic errors on the display once in the while, relished stock offered from touch control installation, and now this problem for change.
lifeisfun said:
Thanks for reply!
What kernel are you using with touch control (Franco 33)?
It was working perfect for us with Franco till about rev 29, after that we got problems with graphic errors on the display once in the while, relished stock offered from touch control installation, and now this problem for change.
Click to expand...
Click to collapse
Yes i'm using franco r33, I reverted to from r34 due to otg issues that I need to get around to sorting out. Hope things go well for you.
zubsz said:
Yes i'm using franco r33, I reverted to from r34 due to otg issues that I need to get around to sorting out. Hope things go well for you.
Click to expand...
Click to collapse
Thanks, will try 33 as well on one of them ?
Just had to be send mine back for same problem, only turning it off didn't fix my problem. Not rooted
Hmm...this just started happening to be as week this week. Happened twice today. I'm running the stock ROM & kernel.
I wonder if an update to some app is causing this.
Sent from my Nexus 5 using Tapatalk
Installed FC 33, the touch screen problem is not there anymore but the graphic distortion is back.
It happens once in the while and looks like poor TV signal for second or two.
chrisnewton said:
Just had to be send mine back for same problem, only turning it off didn't fix my problem. Not rooted
Click to expand...
Click to collapse
Meaning when you rebooted it did not fix it?
lifeisfun said:
Meaning when you rebooted it did not fix it?
Click to expand...
Click to collapse
Correct mate
chrisnewton said:
Correct mate
Click to expand...
Click to collapse
Oh OK, if I reboot it's working fine and since 2 devices have the same problem using same set up, it shouldn't be hw problem.
Well mine has gone back.. Sounds like a different problem.

Android 10 issues

Update:
Apparently the Magisk module "Pixel 2 blurry panorama fix" was the cause of all these problems.
I just (dirty) flashed the latest image with Android 10 and immediately started having issues.
1. The camera isn't working!! (No front and back. Other camera apps or video-calling like Duo don't work either)
This is the worst bug because I love the Pixel 2 camera. I tried uninstalling, emptying cache and data. It doesn't work in safe mode either.
update: Apparently Magisk module "Pixel 2 blurry panorama fix" was the culprit
2. After rebooting it always defaults to Night Light on.
Minor annoyance.
3. Fingerprint unlock seems slower. But this might have to do with the incompatibility of Nova Launcher Beta.
4. Tasker won't run.
The camera not working really bums me out most though. Anyone else having this problem after updating?
I have pixel2 with Android 10.
I dont have your probléme.
Tty a clean install with fastboot. Not by OTA update
pixel 2 OTA last night,no issues
tonybhoy said:
pixel 2 OTA last night,no issues
Click to expand...
Click to collapse
Nor here. I did notice I got a a camera app update via Google Play almost immediately though.
WibblyW said:
Nor here. I did notice I got a a camera app update via Google Play almost immediately though.
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Click to collapse
i never noticed that:good:
Did you guys flash QP1A.190711.019, Sep 2019 or QP1A.190711.020, Sep 2019 (the most recent one)?
drdionysius said:
Did you guys flash QP1A.190711.019, Sep 2019 or QP1A.190711.020, Sep 2019 (the most recent one)?
Click to expand...
Click to collapse
OTA sent by Google, so I presume the latest they pushed to me. It`s .020
I'm noticing since I updated to Android 10 LTE signal has gotten worse.. anyone else with this issue??
Which version you were using prior to updating to Android 10? On my P2 this module was giving errors since google fixed it.
drdionysius said:
Apparently the Magisk module "Pixel 2 blurry panorama fix" was the cause of all these problems.
Click to expand...
Click to collapse
Olympus593 said:
Which version you were using prior to updating to Android 10? On my P2 this module was giving errors since google fixed it.
Click to expand...
Click to collapse
On the latest 9-version.
Apollo83 said:
I'm noticing since I updated to Android 10 LTE signal has gotten worse.. anyone else with this issue??
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Click to collapse
Same here, my LTE signal is very poor compared to pie.
My standby battery life is much worse than running Pie.
Sent from my Pixel 2 using Tapatalk
Apollo83 said:
I'm noticing since I updated to Android 10 LTE signal has gotten worse.. anyone else with this issue??
Click to expand...
Click to collapse
This is the reason I visited the forum today. Had to be sure I wasn't alone in noticing this issue.
Apollo83 said:
I'm noticing since I updated to Android 10 LTE signal has gotten worse.. anyone else with this issue??
Click to expand...
Click to collapse
May be a recalibration of the signal indicator. Are you looking as the actual signal strength in an app (compared to what it was before)? The indicator (`bars` of signal strength) are notorously no linear in some phones to make them look better
hmmm....
i get problem flash screen when i press keyboard (chat,cmt,... )
sometimes crash app (i play game, and when it get battle game close - sometime )
parallel app not working .
some app can't hold in multitasking (my phone free-ram 1,9gb . i only get 1 app for multitasking, sometime it can hold, sometime it restar ??? )
Pixel 2 here i never rooted my device or installed any other ROM only Stock all the time.
Update to Android 10 with the recived OTA i never had any problems and cant find a single bug, the battery is the same like in PIE the LTE signal strenght and so on.
No freeze no crashes of the app and is working smooth.

Question Question for OP 9 owners.

So I have this weird scrolling issue, like the one on this video:
Can someone please test if their phone does the same? I will replace the phone if this turns out to be a hardware fault. Thanks!
Hi,
I have the same issue on my OP9. But if I hadn't seen this video, I would never have known there was such a problem. Like in your video, problem exists only in stock launcher.
Dominius said:
Hi,
I have the same issue on my OP9. But if I hadn't seen this video, I would never have known there was such a problem. Like in your video, problem exists only in stock launcher.
Click to expand...
Click to collapse
Alright, thank you! Yes it is a minor issue, but still quite annoying (at least for me and my way of using the device). Hopefully they will fix as it soon, as it seems to be happening only on the base non-pro 9 model.
First thing i do is install NOVA launcher. So never noticed an issue.
nujackk said:
First thing i do is install NOVA launcher. So never noticed an issue.
Click to expand...
Click to collapse
This happenes throughout the device, regardless of the launcher used. Can you please try replicating the steps as shown in the video?
I did didn't notice any problem. But reading the previous post said only occurred in stock launcher which i uninstalled
I've lowered my animations to 0.25 with joneplus tool so that may make a difference as well
nujackk said:
I did didn't notice any problem. But reading the previous post said only occurred in stock launcher which i uninstalled
Click to expand...
Click to collapse
Okay, that's weird. Maybe I'm just too sensitive but scrolling feels off to me because of this.
Also, are you using the preinstalled screen protector?
Nope, didn't come with one. Got phone from t-mobile this time. Using one from Amazon forget which brand
nujackk said:
Nope, didn't come with one. Got phone from t-mobile this time. Using one from Amazon forget which brand
Click to expand...
Click to collapse
Thanks for all the info so far! Just one more thing, could you please test it again, but keep your finger still for at least a second before flicking.
I am really sorry to bother you with this, but I am going to replace the phone, if yours turns out to be ok. I'm just paranoid that you might have missed it because it's so subtle.
In Nova the app drawer is side to side, but no issue there and in trying up and down in couple apps no issue . Even tested keyboard and virtually instant response using exact same keys from video. P0qla no delay at all
nujackk said:
In Nova the app drawer is side to side, but no issue there and in trying up and down in couple apps no issue . Even tested keyboard and virtually instant response using exact same keys from video. P0qla no delay at all
Click to expand...
Click to collapse
Alright, something is wrong with mine then... Or maybe the T-mobile version of the phone doesn't have this bug, since it uses a slightly different software.
Yeah could be. Maybe t-mobile turned down the touch rejection.

Question Does shifting into custom roms solve the ghost touch issue?

I'm on miui version 12.5.3 RJUINXM. I have been getting lots ghost touches lately and its really annoying. This is mainly the reason i have decided to install Arrow OS.
Anyone out there getting ghost touches on arrowos? Will changing the ROM fix the problem or, should i just wait for another miui update?
Nothing fixes the ghost touch issue, I tried every rom and every version of MIUI. Totally pointless. If you have warranty, use it, and send back this piece of c**p.
0b4 said:
Nothing fixes the ghost touch issue, I tried every rom and every version of MIUI. Totally pointless. If you have warranty, use it, and send back this piece of c**p.
Click to expand...
Click to collapse
Did you use pixel plus ui? I hear its quite stable
hameem3105 said:
Did you use pixel plus ui? I hear its quite stable
Click to expand...
Click to collapse
I did. Didn't solve ghost touch for me.
0b4 said:
I did. Didn't solve ghost touch for me.
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Click to collapse
So, did you claim your warranty?
hameem3105 said:
So, did you claim your warranty?
Click to expand...
Click to collapse
The store disappeared where I bought the phone from so I don't have warranty...
Wait for the new firmware, that might solve the issue.
AxisKiku said:
Wait for the new firmware, that might solve the issue.
Click to expand...
Click to collapse
It won't.
There's a rumor at the 4pda portal that ghost ghost touch issue could fixed by setting tight connection between display cable and motherboard.
Another rumor is connection between case usage and ghost touch.
0b4 said:
The store disappeared where I bought the phone from so I don't have warranty...
Click to expand...
Click to collapse
I contacted xiaomi's local office rather than the store, they asked for proof of purchase but issued the RMA. Just waiting to get it back fixed (hopefully)
Ghost touch is related to display panel, tianma or huaxing, tianma got ghost touch...
It may be hard to fix because fixing tianma ghost touch may cause huaxing to became buggy, i saw that on poco f1 as rom devs needed to make 2 version of the roms to each panel until a middle term could be reached...
Xiaomi got that bad habit to get 2 different panels to same phone...
I never experienced ghost touch in any factory or custom ROM
12.5.3 has been complained about by several, including me. I switched back to 12.0.6, perfect ever since. On the other hand, several people confirmed by telegram that 12.5.4 is good.
i have the same problem... i dont have warranty of the phone so, i have a piece of ****... i need to buy a new phone... i cant wait to another version of miui... itso so annoying for me
For me, it has helped now to set the refresh rate and the screen to 60 Hz. We'll see for how long. All other activities did not help, including the game turbo exclusion.
Unfortunately, but with the 60 Hz refresh, the touch has gone crazy once, but it probably happens less often
Thanks. I checked my tianma. I found such a coincidence "MDPPLATFORM_PANEL_TIANMA_NT36672C_J20S_LCD_VIDEO" How do you think to advertise the phone?
fudi2002 said:
12.5.3 has been complained about by several, including me. I switched back to 12.0.6, perfect ever since. On the other hand, several people confirmed by telegram that 12.5.4 is good.
Click to expand...
Click to collapse
Same experience here also. Although after 12.5.4 tried custom rom. Ghost touch is like my neighbor now. Any custom rom u trying now after 12.5.4 ???
hameem3105 said:
I'm on miui version 12.5.3 RJUINXM. I have been getting lots ghost touches lately and its really annoying. This is mainly the reason i have decided to install Arrow OS.
Anyone out there getting ghost touches on arrowos? Will changing the ROM fix the problem or, should i just wait for another miui update?
Click to expand...
Click to collapse
Update to 12.5.5 it solves it
Hi, I bought a few days ago an X3 Pro 6GB and it also has the Tianma panel . So far, no issues, but I'm reading bad experiences everywhere...
I would really love to try custom roms, but in that case isn't warranty voided? Or how do you manage to try custom roms and then claim warranty?
Thanks!

Wanted to get a Survery: Multitouch on Google Pixel 4A

Alright, so currently im dealing with some Multitouch issues on my Pixel 4a. The repair place i went to UBREAKIFIX said they'll have to do the whole repair they did preciously again and charge me (because of 2 small dents at the side of the screen). Would not recommend. I wanted to get a poll of everyone with this exact issue Here is some steps to test:
1. Enable Developer Options (Go into build number click however many times and get developers options
2. Go to Developer Options in System settings,
3. Scroll down to Input and enable "Show taps" and "Pointer Location.
4. Put two fingers down and see if multiple pointers are shown (If not, Multi-touch does not work)
Also some other Notes:
Downgrading to Android 10, Makes multitouch work for some reason :/
Also would like to know if you've gotten your phone repaired before.
Any help figuring this whole thing out is appreciated
Can I ask what was the repair they did the first time to fix your touch problem?
hammered58 said:
Can I ask what was the repair they did the first time to fix your touch problem?
Click to expand...
Click to collapse
The first time, it was just a broken screen, had to replace it
fbievan said:
The first time, it was just a broken screen, had to replace it
Click to expand...
Click to collapse
Dont know if started happening before or after, but i noticed it recently, and started digging, brought it to the place and they said they wouldnt cover it under warranty because of 2 small dents at the side of screen which have zero relation to the problem at hand
fbievan said:
Dont know if started happening before or after, but i noticed it recently, and started digging, brought it to the place and they said they wouldnt cover it under warranty because of 2 small dents at the side of screen which have zero relation to the problem at hand
Click to expand...
Click to collapse
That's sucks, hard to prove if there right or wrong without putting a known good screen on
hammered58 said:
That's sucks, hard to prove if there right or wrong without putting a known good screen on
Click to expand...
Click to collapse
Also as i noted, for some reason downgrading to andorid 10 has multitouch working. (From flash.android.com)
fbievan said:
Also as i noted, for some reason downgrading to andorid 10 has multitouch working. (From flash.android.com)
Click to expand...
Click to collapse
I honestly cant say if its the hardware or software, maybe it might be a combination of both? I'm not entirely sure, however downgrading to android 10 from googles flash tool does seem to have it work. I had what i would guess is a full screen replacement from UBREAKIFIX, due to shattering the entire screen. Honestly, spending 140 dollars just to see if it might work is not worth it to me, so I'm really not sure what to do.
Even doing it yourself the cheapest I've seen a screen is 110 from AliExpress, which I don't get because I just replaced one on a g7 moto play for 20 bucks off ebay
hammered58 said:
Even doing it yourself the cheapest I've seen a screen is 110 from AliExpress, which I don't get because I just replaced one on a g7 moto play for 20 bucks off ebay
Click to expand...
Click to collapse
Is there any reason why this multitouch would work on android 10? I dont see exactly what is happening here
fbievan said:
Is there any reason why this multitouch would work on android 10? I dont see exactly what is happening here
Click to expand...
Click to collapse
idk,, maybe the sensitivity is setup diff
hammered58 said:
idk,, maybe the sensitivity is setup diff
Click to expand...
Click to collapse
After looking for a while seems the entire drivers are different in the kernel. But that is my brief look at. If anyone who knows kernel drivers would like to take a look at it. Would be helpful
LineageOS 19.1 - multitouch just stopped working today after several weeks without problems. No repairs or damage.
I'm on stock but rooted. I've been slack so still on October patch. Multi touch working fine. Never had a problem with it.
(Finally updated to December patch and it's still working.)
LionDGem said:
LineageOS 19.1 - multitouch just stopped working today after several weeks without problems. No repairs or damage.
Click to expand...
Click to collapse
What fixed it for me was downgrading to android 10 then updating all the way up...
From right here: https://forum.xda-developers.com/t/...ter-apr-security-update.4428089/post-87356703
fbievan said:
What fixed it for me was downgrading to android 10 then updating all the way up...
From right here: https://forum.xda-developers.com/t/...ter-apr-security-update.4428089/post-87356703
Click to expand...
Click to collapse
Wonder how this actually fixes the issue. Sounds strange.
LionDGem said:
Wonder how this actually fixes the issue. Sounds strange.
Click to expand...
Click to collapse
I don't know... As far as I know downgrading has the kernel touchscreen driver seemingly working... from there I know little
fbievan said:
I don't know... As far as I know downgrading has the kernel touchscreen driver seemingly working... from there I know little
Click to expand...
Click to collapse
Multitouch stopped working on my Pixel 4A 5G after updating to android 13.
Maybe a bug caused by an OTA update?
qqBenji said:
Multitouch stopped working on my Pixel 4A 5G after updating to android 13.
Maybe a bug caused by an OTA update?
Click to expand...
Click to collapse
I have LineageOS 19.1 here. So android 12. i'll try that android 10 approach
I can confirm now that downgrading to Official Google Pixel 4a Stock Rom Android 10 fixed the issue. I try to go back to LOS 20 now and see what happens.
PS: Using internal updater to update to Android 13 broke it again. Taking the long route now.
PPS: That chromium based flash tool is really handy. Would be awesome to have something like that for LineageOS.
PPS: As soon as I install anything above Android 10, multitouch stops working. I'll sell this stupid thing as is (will let te buyer know of course). Its a shame.

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