ghost touch possible solution? - Xperia Z1 Q&A, Help & Troubleshooting

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

Related

[Q] Touch screen - horizontal position

I have a problem. When the phone is located for example on a table. This touch screen responds very hard (when it is in the horizontal position). when phonei is in the a vertical position, the screen works very well.
I have firmware 12.0.A.1.257.
yes sometimes
when i connect to my laptop it used normal
but when i connect to my PC i cant use my phone
maybe erro from hardware but i think u should tick off gloves mode in setting
illusiek said:
I have a problem. When the phone is located for example on a table. This touch screen responds very hard (when it is in the horizontal position). when phonei is in the a vertical position, the screen works very well.
I have firmware 12.0.A.1.257.
Click to expand...
Click to collapse
hey dude
so i decided to buy this phone but after reading this issue i kinda changed my mind but i thinks this may work
i bought a Xperia Tipo for my baby brother last week and it has touch sensitive issues just like SP when it placed horizontal ( i watched the Utube Videos and it looks exact the Same) but i found a little Mod App called (Touch Calibrate) i want you test it for me and say that if that worked for you or not!
http://fs2.filegir.com/karandevilocs/TouchFWTools.apk
install it manually and give me report! :fingers-crossed:
karandevilocs said:
hey dude
so i decided to buy this phone but after reading this issue i kinda changed my mind but i thinks this may work
i bought a Xperia Tipo for my baby brother last week and it has touch sensitive issues just like SP when it placed horizontal ( i watched the Utube Videos and it looks exact the Same) but i found a little Mod App called (Touch Calibrate) i want you test it for me and say that if that worked for you or not!
http://fs2.filegir.com/karandevilocs/TouchFWTools.apk
install it manually and give me report! :fingers-crossed:
Click to expand...
Click to collapse
APp not installed
ashis.kyal said:
APp not installed
Click to expand...
Click to collapse
Did You Check Unknowns Resources in Settings?!
it should WORK!
if that didn't work search TOUCH CALIBRATION in Play Store and let me know
Touch Irresponsive, Screen Freezes
Like a lot of users, I am also having problems with the xperia SP's touch screen. The touchscreen becomes randomly irresponsive. Sony acknowledges the problem and suggests:
"This have now been investigated and if you experience this problem I advice you to contact your local support team to have your phone calibrated at a repair center."
The problem is in live in Bangladesh and they do not have official Sony tech support centres. Does anyone know how to do the touch screen calibrations ? Any DIY solutions will be highly appreciated.
Cheers,
Mir

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

Anyone facing ghost touch on rooted 4.4?

I have unlocked and rooted with the latest 4.4 but have been facing lot of ghost touch, over heating and freeze. Is anyone else facing the same issues with their z1?
ravi_buz said:
I have unlocked and rooted with the latest 4.4 but have been facing lot of ghost touch, over heating and freeze. Is anyone else facing the same issues with their z1?
Click to expand...
Click to collapse
I haven't as yet but I did notice that the touch screen issue I had where my finger / thumb would lose contact briefly with the screen.
Hasn't happened a lot and holding the metal frame fixes it.
What youre describing could be a knock on effect of the new firmware having a higher sensitivity to the previous firmwares, I know Sony were aware of the touchscreen issue that people were facing and there was a fix where you could alter the sensitivity of the touch screen.
Could be that your touchscreen is set too high for your device in particular, either that or it's a problem with the touchscreen or even some dirt.
Give it a good old clean and a few reboots.
All the above is speculation of course, just having a stab at it for you m8.
Not sure where that thread is about the touchscreen but it's definitely in the Z1 forum.
dladz said:
I haven't as yet but I did notice that the touch screen issue I had where my finger / thumb would lose contact briefly with the screen.
Hasn't happened a lot and holding the metal frame fixes it.
What youre describing could be a knock on effect of the new firmware having a higher sensitivity to the previous firmwares, I know Sony were aware of the touchscreen issue that people were facing and there was a fix where you could alter the sensitivity of the touch screen.
Could be that your touchscreen is set too high for your device in particular, either that or it's a problem with the touchscreen or even some dirt.
Give it a good old clean and a few reboots.
All the above is speculation of course, just having a stab at it for you m8.
Not sure where that thread is about the touchscreen but it's definitely in the Z1 forum.
Click to expand...
Click to collapse
Cleaned it and rebooted. Din have this problem before rooting..but as soon as i rooted i started seeing these things happpen
ravi_buz said:
Cleaned it and rebooted. Din have this problem before rooting..but as soon as i rooted i started seeing these things happpen
Click to expand...
Click to collapse
So on the base that you were on you didn't have any issues, Rooting itself will not cause this issue.
What base were you on prior to rooting and what are you on now?
dladz said:
What youre describing could be a knock on effect of the new firmware having a higher sensitivity to the previous firmwares, I know Sony were aware of the touchscreen issue that people were facing and there was a fix where you could alter the sensitivity of the touch screen..
Click to expand...
Click to collapse
How can I alter the sensitivity of the Touch Screen?
EDIT: sorry, I forgot you don't know where it is..
---------- Post added at 02:32 PM ---------- Previous post was at 02:23 PM ----------
ravi_buz said:
Cleaned it and rebooted. Din have this problem before rooting..but as soon as i rooted i started seeing these things happpen
Click to expand...
Click to collapse
Same here, after rooting mine, it starts again the touch screen to respond strange, but not a big problem. Did not had this on .136.
dladz said:
So on the base that you were on you didn't have any issues, Rooting itself will not cause this issue.
What base were you on prior to rooting and what are you on now?
Click to expand...
Click to collapse
Actually Rooting can cause the issue because the Pre-Rooted version can be different from the original one installed on our phone.
After I received the phone from Repair they updated the Software and then I updated to .136 officially and the issue disappear, never had even a bit of it. Then I rooted, but to do so I used a different Base, NUT use the Frence region I think, and after that on mine .136 the problem with Touch Screen appear again, not badly, all is fine but sometime it skips something.
So I think it's really related to the Software and the all the phone have a specific Base.
eclyptos said:
Actually Rooting can cause the issue because the Pre-Rooted version can be different from the original one installed on our phone.
After I received the phone from Repair they updated the Software and then I updated to .136 officially and the issue disappear, never had even a bit of it. Then I rooted, but to do so I used a different Base, NUT use the Frence region I think, and after that on mine .136 the problem with Touch Screen appear again, not badly, all is fine but sometime it skips something.
So I think it's really related to the Software and the all the phone have a specific Base.
Click to expand...
Click to collapse
Then it would be down to the rom and not the rooting process, rooting alone won't affect the touchscreen m8.
The Rom could though.
dladz said:
Then it would be down to the rom and not the rooting process, rooting alone won't affect the touchscreen m8.
The Rom could though.
Click to expand...
Click to collapse
Of Course.
i have not experienced ghost touch but i did experience the screen failing to register two finger touch sometimes.
what i mean by that is when u quickly touch another part of the screen after its been touched it would register it as a swipe.
very annoying when typing keyboard or even pressing key pin on lockscreen.
i reproduced this in touch test and
once it registers as a faulty swipe while holding down the touch
it keeps registering swipe wherever the other finger presses untill i stop touching.
also when i installed a fresh rom it seems that the touch is very sensitive.
i tried this out http://forum.xda-developers.com/showthread.php?t=2691849
its not a fix but it helps out.
I think i have drilled down to the cause for this issue.
1. I started mounting my phone on my motorbike and ride. Due to excessive vibration the screen might have started acting out.
2. I also read that x alert causes this.
I have locked bootloder and installed stock ROM. Lets see whats happens
ravi_buz said:
I think i have drilled down to the cause for this issue.
1. I started mounting my phone on my motorbike and ride. Due to excessive vibration the screen might have started acting out.
Click to expand...
Click to collapse
I don't think this cause the issue.
ravi_buz said:
2. I also read that x alert causes this.
Click to expand...
Click to collapse
What is that or where it is?
Been trying to find that adjustment you can make for the touchscreen but can't find it. Its an adjustment of a file within android which deals with how sensitive the touch screen is. Buggered if I can find it though. I commented on it too. Eluded me.
Sent from my C6903 using XDA Premium 4 mobile app
dladz said:
Been trying to find that adjustment you can make for the touchscreen but can't find it. Its an adjustment of a file within android which deals with how sensitive the touch screen is. Buggered if I can find it though. I commented on it too. Eluded me.
Sent from my C6903 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Maybe that Calibration.ini file magically can help?
BTW, if you find that thread let me know because I am interested too in changing the sensitivity, I will like to play with that.
eclyptos said:
Maybe that Calibration.ini file magically can help?
BTW, if you find that thread let me know because I am interested too in changing the sensitivity, I will like to play with that.
Click to expand...
Click to collapse
Will do m8.
dladz said:
Will do m8.
Click to expand...
Click to collapse
I would definitely be interested in this as well so could you please inform me as soon as you find something? Thanks
I am unable to pin point the problem.
1. Its not bcoz of root/boot loader
2. Not bcoz of mouting it on my bike. Infact when i mount it, it functions normally.
3. Ghost touch worsens when i play clash of clans but it is there other times too.
So its either bcoz of over heating (games make the phone heat a lot) or water entered it or i am not sure.
http://forum.xda-developers.com/showpost.php?p=51742613&postcount=8
He found my thread
I always surf the forums and check out what is happening, and this thread did catch my eye
I don't like to think that the touch screen issue is hardware related. I really hope it isn't.
Don't put your heart on this 'fix', as I have lost faith in it myself...
I'm going to post there now as well, to tell people what I have said here.

Touch Issue

I am using one plus 3T last 18 days. It is one of the greatest phone i had ever seen. i am very happy with the phone but my problem is about touch sensitivity or touch problem. From the very beginning i download an app from play store which name is screen touch test. i saw that when i draw a line any where or normally draw something, every where it works fine i mean touch is perfectly registering but only when i touch right corner to the down side then it not respond. I have to touch there several times then it shows dot in apps but other corners dot are showing perfectly when touched. but if i draw a line from that corner or any where then it respond immediately. sometimes this corner works well. i never installer curved glass but using Nillkin H+ pro tempered glass. i bought it from china and am from Bangladesh. is it a software problem or hardware if hardware then i have to go for good shop. but it is not possible for me to go china. please revise my problem its urgent.
How is the touch working without a screen protector?
Are you actually seeing this problem in real day-to-day usage, or just the screen test app? Wondering if it's a case of looking for problems where they might not exist . . .
I never used without screen protector
No actually i think this problem will not be affected for others but some time when i touched that place it not respond. but if it is a problem then i should know because for this problem i think it could be affect my display. Thank you for this response.
Well, assuming you have similar problems in any app. And it's not just the testing app that sees this.
You have to test without the screen protector to eliminate it as a cause to your problem.
If it's the same without any protector attached then my guess is your touch screen is faulty.
But I would still start with a clean install to see if that fixes the problem since that is a less time consuming and cost free troubleshooting step, than sending it in for repairs and having them find out a reinstall fixed it.
But my question is if my screen is faulty then why it response when i draw lines but only create problem when that area is being touched. but if start touch from place and come to this point then it also works fine.

Sensitivity issue

Hi there,
my Redmi Note 9 NFC version has a problem with its touch screen. For me, it is too sensitive, which means my finger hovers about 1 mm above the screen an the phone detects a touch, which is clearly wrong. That leads to wrong typing and all sorts of other annoying issues.
Does anybody of you know how to turn the screen less sensitive? The tips I read on the Internet are not applicable to the Note 9 or are simply useless.
Your input is highly appreciated!
Thanks!!!
-Dfahren
If you searched the internet and found no one facing that issue on the same device then it might be just your unit with this problem. Anyways your phone has a warranty and contacting Xiaomi's support is recommended.
Sorry, don't think I can help you - I haven't come across this problem. Just tried to reproduce it myself but can't. Are you using a screen protector? If not, you might find it helpful to use one - they tend to dull the sensitivity a little, though if you're getting touches detected without any contact being made I suspect a screen protector might not help
that's unfortunate that no one has the same problem, which means it could be a hardware problem, which means I need to return it or take it to a service center.
I'm using the original screen protector, didn't tear it off. I had hoped there was some internal feature within the CIT, for instance, that I can use to recalibrate the touch screen, but it merely checks the touchscreen.
Hmmm, need to think about it a bit more.
I also have this problem , . I have a Redmi Note 9 pro EU version . My finger gets registered about 1 mm above the screen . Although I don't seem to have a problem with typing, it is annoying as sometimes the screen registeres my finger without touching by the screen witch leads to all sort of problems , ( like wrong friend requests on Facebook )

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