Database Develop

The method of reproduce the touch screen problem is established. Confirm it!

1.Turn on your display and wake app like the paintsoft.
2.Put your Z1 onto a insulated one, like rubber sheet and your Z1 has to be naked.(without any cases)
3.Wait 30sec or more.
4.Draw a line, and during drawing, touch the side panel. Left side and right side should be touched by two fingers. and cover of microUSB port and sim port should not be touched.
5.About 70-80%, You can reproduce the problem.
The movie is here
http://youtu.be/CeAw17LrdKE
This problem may be caused by bad insulating.
But I don't know this problem is occurred in all Z1s.
This problem of touch panel can be occurred variable timings.
People who playing games or using pattern lock will recognize this problem easily. but difficult for who Not playing games or Not using pattern lock.
This method can detect the potential error of your Z1 it looks no problem.
Please test your Z1. and if the problem is reproduced, you should go to store and make a claim!
and replaced one if you get, please re-test and report here.

router0520 said:
1. Turn on your display and wake app like the paintsoft.
2.Put your Z1 onto a insurated one, like rubber sheet and your Z1 must be naked.(without any cases)
3.Wait 30sec or more.
4.Drow a line, and during drowing, touch the side panel. Side panel should be touched left side and right side by two fingers. and cover of microUSB port and sim port should not be touched.
5.For 70-80%, You can reproduce the problem.
The movie is here
http://youtu.be/CeAw17LrdKE
This plobrem caused by bad insurating.
But I don't know this ploblem is occurred in all Z1s.
Please confirm it.
Click to expand...
Click to collapse
confirmed in my case.. really bad...

router0520 said:
1. Turn on your display and wake app like the paintsoft.
2.Put your Z1 onto a insurated one, like rubber sheet and your Z1 must be naked.(without any cases)
3.Wait 30sec or more.
4.Drow a line, and during drowing, touch the side panel. Side panel should be touched left side and right side by two fingers. and cover of microUSB port and sim port should not be touched.
5.For 70-80%, You can reproduce the problem.
The movie is here
http://youtu.be/CeAw17LrdKE
This plobrem caused by bad insurating.
But I don't know this ploblem is occurred in all Z1s.
Please confirm it.
Click to expand...
Click to collapse
My Z1 also have this problem. After 40seconds i even didn't have to touch this two sides of phone.

For few weeks I never saw that problem on mine so I was not worry about it but today I tested few nice games and I realized that after a minute playing the game (Minimotor or HAWX) the virtual joystick stopping working. I have to retouch the joystick with my hand or take off my hand from the phone. All the time.
My question: this is a Hardware problem?

brapicoco said:
confirmed in my case.. really bad...
Click to expand...
Click to collapse
This ploblem can solve by updating the driver software. like Xperia tabletZ.
Hang in there!

In the next week i will buy this phone when i have enough money.
How often come the problem?
Sent from my Optimus 4X HD using xda premium

eclyptos said:
For few weeks I never saw that problem on mine so I was not worry about it but today I tested few nice games and I realized that after a minute playing the game (Minimotor or HAWX) the virtual joystick stopping working. I have to retouch the joystick with my hand or take off my hand from the phone. All the time.
My question: this is a Hardware problem?
Click to expand...
Click to collapse
I think hardware. but can be solved by software.
The touch panel is too sensitive?

orzech.miron said:
My Z1 also have this problem. After 40seconds i even didn't have to touch this two sides of phone.
Click to expand...
Click to collapse
Yes. Sometime it is occurred without touching side panel.
Already reported a lot in japan.

router0520 said:
I think hardware.
Click to expand...
Click to collapse
This is bad, so the Flagship Device is comming to be a Crap Device.
router0520 said:
..but can be solved by software.
The touch panel is too sensitive?
Click to expand...
Click to collapse
How it's possible the problem of the touch screen is because is too sensitive? I hope there is a solution via software but for there is some lack of insulated between the touch screen and the rest of the phone. That why when you touch the frame the touch respond very badly.

eclyptos said:
This is bad, so the Flagship Device is comming to be a Crap Device.
How it's possible the problem of the touch screen is because is too sensitive? I hope there is a solution via software but for there is some lack of insulated between the touch screen and the rest of the phone. That why when you touch the frame the touch respond very badly.
Click to expand...
Click to collapse
I think the screen react to very few electrostatic.like touching side panel.
so to make less sharp ,It will be ok. perhaps.

Confirm the problem in my device, hopefully a fix can be found, mine ain't so bad I guess cos it happens only when I press the sides
Sent from my C6903 using Tapatalk

Tried this several times on my Z1 (C6903 bought at launch) and i wasnot be able to reproduce this issue. Seems like this issue is only a problem on some devices.

veghov said:
Tried this several times on my Z1 (C6903 bought at launch) and i wasnot be able to reproduce this issue. Seems like this issue is only a problem on some devices.
Click to expand...
Click to collapse
Actually, It is reported that replaced one has this issue too in Japan.
Sony don't recognize this issue yet!

I did a video by myself and I don't get it! Where is the problem? I mean where is the problem causing the touch screen failing to work. The only 1 thing what I am sure is if I leave the phone for 20, 30 seconds the issue show up with my touch screen with or without touch the aluminum frame.
Link: https://www.youtube.com/watch?v=nNV_jat9Z5Y

eclyptos said:
I did a video by myself and I don't get it! Where is the problem? I mean where is the problem causing the touch screen failing to work. The only 1 thing what I am sure is if I leave the phone for 20, 30 seconds the issue show up with my touch screen with or without touch the aluminum frame.
Link: https://www.youtube.com/watch?v=nNV_jat9Z5Y
Click to expand...
Click to collapse
How bad it is ....nnn

router0520 said:
How bad it is ....nnn
Click to expand...
Click to collapse
I really hope that this can be fixed. I think this is a hardware defect. much like with the N7 2013 fiasco

router0520 said:
Yes. Sometime it is occurred without touching side panel.
Already reported a lot in japan.
Click to expand...
Click to collapse
Yes I would like to confirm this as well. I didn't even have to touch the side panel.

nizarnoor said:
Yes I would like to confirm this as well. I didn't even have to touch the side panel.
Click to expand...
Click to collapse
I can attest to this one as well. Issue occurs especially when gaming and prolonged touch on the screen and without even touch the side panel.

brapicoco said:
I can attest to this one as well. Issue occurs especially when gaming and prolonged touch on the screen and without even touch the side panel.
Click to expand...
Click to collapse
Exactly, I think we are close. The problem appear after long or prolonged use with the touch screen.

No issues here, i tested for like 20 minutes and its perfect here
No issues with games, paint or the service test
So maybe the C6906 doesn't have it?
Sent from my C6906 using Tapatalk

ghost touch possible solution?

hi everyone i post this to ask or confirm a situation, a lot of users know or have experiment the ghost touches and after a lot of research is not confirmed if is a issue of software or hardware, besides that i found a tip about the ghost touches if i conect a otg mouse during the fail and work a little with it the issue dont hapen and more, its solved after the next reboot when happens again.
have somebody trying that? or can confirm if it works for someone?
if this post its in wrong place please change it or copy to another location.
thanks
phone: xperia z1 C6906
rom: stock 5.1.1
kernel: stock no mods
screen/touch changed by chinese one

Apply tampered glass screen protector, it will reduce/eliminate ghost touche

I'm using tempered glass screen protector but the issue is still there. Well, it may reduce that a bit though.
There are many hassles. These Z1 family support pencil touch that causes unwanted touch.
And, the touchscreen panel and display is poor.

Try this
Try this, worked for me for a few days or weeks :
Apply pressure on the digitizer, specifically in the inferior part, just like a massage ( side by side) . . after a few seconds you can verify how it works . . The only point is, this solution is not permanent. This is a hardware problem .. the real solution is replacing the digitizer. Regards

bloodofJesus said:
You can try this, it worked for me on cm 12 with ghost touches
http://forum.xda-developers.com/showthread.php?t=934500
Click to expand...
Click to collapse
DL link in that thread is not working. Can you upload an APK?
Sent from my Z1

Touch screen unresponsive at the very bottom

All of a sudden the lower part of display (about 7 mm) has become unresponsive to touch which means no more gestures (swipe up to get to home screen is not working) e struggle to use the classic navigation buttons.
Sadly I had the same issue in my mi5 but in that case phone had the issue since the unboxing.
I'm starting thinking the xiaomi touchscreen tend to be more fragile than others.
Now I'm waiting for gearbest support.
Anyone has any advice or similar experience?
I made a screen recording
https://youtu.be/bIOUK1V56Ao

No one? Any advice?

jendrassik said:
No one? Any advice?
Click to expand...
Click to collapse
Regarding Xiaomi Quality
While climbing into my truck, I dropped my Mi8 from a height of about 4 ft on accident and it landed flat on its face , on the concrete. Freaked out, I left it laying their for about a minute fearing that the screen had been smashed into a million pieces. However, I picked it up to see that it was fine, and not a single scratch. So I immediately went out and bought the Love Mei 360 case.
Anyway, regarding your touch issue, you should really provide more some information about how this issue came about, what rom were you using, did the phone get wet, etc.
Also, I had an issue with my Mi8 soon after unlocking the bootloader where the top part of the screen would not register my touches, I first tried recalibrating the screen using Miui hidden settings app, the test is called QMMI ( I think) and if I remember correctly there are several menus of testing that also calibrate the screen for me this worked and for good measure I reinstalled a Miui rom and havent had the issue since.
Try it, hopefully that is the only issue. If you are using a AOSP. It's possible that you have a driver issue. So before sending the phone off for service its worth testing.. If you are on stock and still have a locked bootloader, I would try resetting the phone before trying anything else.
Good Luck.

Some gravedigging, but the question is still on the table - have you managed to fix it?

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...
Click to expand...
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.

Redmi 9 Ghost Touch Issues

Hello, I've just noticed that there is a ghost touch on the bottom most part of the screen, is this normal for redmi 9?

I don't know if it's normal but I have experienced it too

What u mean exactly i dont realy understand,thanx?Cheers!!!

-CALIBAN666- said:
What u mean exactly i dont realy understand,thanx?Cheers!!!
Click to expand...
Click to collapse

In the stock Launcher I had the camera app at the bottom right corner and it would open randomly when I was in the home screen.
switched to Nova and no ghost touches so far

I am also having the same issue in my Redmi 9i
the phone just do random stuff by it self
a reset didn't solve the issue