I got nexus s (i9020T) recently and found the touch screen unresponsive sometimes. I've already tried several launchers(adw, lancherpro, go launcher ex), and it seems not launcher's problem. I've also tried to flash different ROMs, including CM-7rc2 and stock 2.3.3, and the problem remains.
Later I tried to bind Multi-touch Visualizer 2 to long pressing home button, and found the when screen is unresponsive, it can still detect press near edges very well, but not the center. While I press at the edge and drap across the center, it keeps tracking my finger correctly. In addition, Locking and unlocking the screen can solve the problem temporally.
I'm confused by the strange behavior, anyone experienced similar issue?
more info from test,
I connect my phone with adb, and tried to "cat /dev/input/event0"
The behavior confirms what I see in Multitouch Visualizor 2: the when the center of screen is unresponsive, nothing can be read from the device node.
I read the mxt224 touch screen controller doc, and it seems the chip features self-calibration, and thus I believe the "lock & unlock" will trigger the chip to tune it self in some way. I don't know kernel very well, so I cannot find the source code Any help please?
FYI. we are not alone.
http://code.google.com/p/android/issues/detail?id=13853
I got this problem too whenever my phone is in my pocket facing inward.
I have tried to open the calculator to see which part of the screen having problem. Mine is usually the "8" and "5" location unresponsive if my phone stayed in my pocket facing inwards for a certain period of time.
The problem will goes off after couple of mins when i can feel that the phone is cooler than my body temp.
I knew this happens to the Dell Streak as well.
is there anyway to calibrate the screen? im having some calibration issues with my g2x and restarting the phone doesnt help!
I just looked through the hidden menu list. I don't see anything about calibration.
Out of my last three phones that had touch screens, Ascend, Evo, and Indulge, It seems like only one had a calibrate screen option, so I don't think it's real common.
What problems are you having? I've noticed a lot of times with my G2X that when I push a link, it highlights right above it. But the link still works.
I have issues as well, there are no calibration settings in Hidden Menu. Sometimes I press on the screen and it hits something else. Sometimes, I'm not even TOUCHING the phone and it will, by itself, select and enter into different apps on my screen. I thought I had a virus on this thing.
I checked around, other people are having these issues and have NO real fix for it. It has to be an SW problem. When I first started using my G2x, there were no touchscreen problems like there are now. Guess I'm gonna have to change my signature on the G2x away from "so far no issues".
http://forum.xda-developers.com/showthread.php?t=1096800
http://forums.t-mobile.com/t5/T-Mobile-G2x/G2X-keeps-shutting-down-touch-screen-is-jumpy/td-p/825783
Damn LG and T-Mobile really screwed the pooch with these phones. =(
darbear5610 said:
Sometimes, I'm not even TOUCHING the phone and it will, by itself, select and enter into different apps on my screen. I thought I had a virus on this thing.
=(
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I've noticed that the edge of the screen is very very sensitive. I'm constantly opening droidtv when the app drawer is open. It's right at the bottom left. My fat fingers overlap the edge enough to open it. Makes me laigh.
Also, I've set launcher pro to scroll the apps up and around like it is in the stock drawer. It cracks me up how it is so sensitive that you can open the app while the icon is scrolled up and around the corner. Even when it's two rows back and especially out of the way. Try it.
I know you said you weren't touching the phone, but maybe some of these times were when you were just holding it?
Yeah, when I'm holding the phone, the bottom of my palm near my thumb is close to the edge of the screen, and it registers as if I were pressing on the screen with my other fingers.
The screen jumping around randomly, I can't explain it. And it does happen when I'm not even touching it. I would put the phone down and watch it go, entering menus and apps and pressing all kinds of things. On one of the forums I linked, someone said to remove the battery and let it sit for a few seconds, then put it back in. So I've tried that, and so far the touchscreen isn't acting possessed anymore. This isn't a constant thing. It's just happening at random times on my phone, it's leaving me confused lol.
I've just began to run into this issue. It most apparent when using the keyboard, and switching keyboards doesn't even seem to help.
CM7 fixed the calibration and touchscreen issues long long long ago.
I've got Xperia J with CM 10, release FXP217, kernel version 3.0.8. Everything seems all right and the phone works as it should (except of the known issues and bugs). But I noticed that nobody mentioned, that their touch freezes or anything.
The main issue and reason for asking this question - sometimes my screen, or rather touch, freezes and there's nothing I can do with it. It doesn't react to any movement, but the phone itself remains functional and does everything normally, so it doesn't remain active or anything, just doesn't react to any touch at all. I have to press power button a lot before it starts reacting again. I usually press the power button and move my finger across the screen for as long as it doesn't lock itself or unfreeze.
At other occasions it does something a bit different - the touch gets a bit dull and unresponsive in general, but after some using it, it goes back to normal. When using the Pointer location overlay i noticed, that while I move my finger across the screen, the trail stops for a half a second or so and continues. It's like the touch periodically gets "disabled" or something. But when I press HARD and move my finger a bit slower than regularly it mostly is good and after some time - it gets back to normal.
One day it may occur twice or maybe even not at all, sometimes it happens a lot, like even 4-7 times; at rare occasions, this problem reoccures in small periods of time (like when I use the touch screen a lot).
Is there anything known about this issue? Is there a fix for that?
The main issue I'm having is, on occasion, the touch screen seems to behave erratically, registering input even when I am not touching the screen. I can't seem to figure out how to reproduce it reliably, but it seems to happen at least once every day. The phone seems to think something is touching parts of the screen, as it launches apps, types garbage on the keyboard, bounces the lock screen up and down, etc, all without me even touching the device. And of course, when I do touch the device, it either doesn't register, or 'fights' with the ghost input, and basically doesn't do what I want.
Try changing your touch sensitivity from High to Normal. Find under Settings - touch - Touch sensitivity.
This worked for me Mine was very sensitive too when I first bought it but after messing around with it for a couple of days and changing the setting from High to Normal and back again it's been fine ever since, Crazy!
I first noticed this on a running game where you have to hold down either the left or right side of the screen to move in that direction. It would usually register the first press, but not that I had held my finger down so I wasnt moving properly. I thought this was due to the game it's self rather than my phone.
I've just downloaded Naugh where you have to rotate the screen by touching either side of the phone, and again the same issue. It's really unresponsive - It will recognise the tap but not that i've held it, it will stop working. Occasionaly this will also happen when scrolling a page.
Has anyone else experienced this? Or if not, any suggestions on figuring out whats wrong?
I have recorded a video that shows what I mean: https://www.youtube.com/watch?v=UW2gCWpThWc
haste75 said:
I first noticed this on a running game where you have to hold down either the left or right side of the screen to move in that direction. It would usually register the first press, but not that I had held my finger down so I wasnt moving properly. I thought this was due to the game it's self rather than my phone.
I've just downloaded Naugh where you have to rotate the screen by touching either side of the phone, and again the same issue. It's really unresponsive - It will recognise the tap but not that i've held it, it will stop working. Occasionaly this will also happen when scrolling a page.
Has anyone else experienced this? Or if not, any suggestions on figuring out whats wrong?
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When you go to Settings>About phone - there is a Diagnostics section>Test device. You will see a list of tests you could do including touch screen.
I've tried this, thanks.
There is no aparrent issue using this diagnostic. It doesnt detect multi-touch though, which I find a little odd.
I did find this article though:
http://johnhaller.com/blog/2014-03-06--sony-xperia-z1-z1s-touch-screen-issue
Which seems to be the exact same issue I have on my Z3 now.
haste75 said:
I've tried this, thanks.
There is no aparrent issue using this diagnostic. It doesnt detect multi-touch though, which I find a little odd.
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What do you mean? There are two options; one which shows dots where you are touching, and another which shows two lines for each point you touch; the lines cross at the point you are touching. They absolutely do detect multitouch, so if you're using more than 1 finger but only seeing one point, or one pair of lines, then you have a problem.
I only have one option under that test, which is to see a yelow line. It doesnt detect more than one touch at a time though.
I have downloaded a seperate screen testing app, and that detects up to ten points at once - again without any obvious issues with unresponsive.
I really can only reliably replicate the issue when playing games.
Mine does have a similarish issue.
Double tap doesn't work on first try when you last use the phone for some time.
But i think it is a software thing cause it worked fine when in continuous use.
haste75 said:
I only have one option under that test, which is to see a yelow line. It doesnt detect more than one touch at a time though.
I have downloaded a seperate screen testing app, and that detects up to ten points at once - again without any obvious issues with unresponsive.
I really can only reliably replicate the issue when playing games.
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In Settings, enable the Developer Options, then tick "show touches" and "pointer location".
I notice this issue all of the time in Ingress, however I have tried multi touch test apps and can easily get perfect tracking with 5 fingers on the screen, so I am sure the multitouch and display is working fine, and I have no problems with Google Maps or Waze where similar gestures to tap on things, and two fingers to rotate and shrink/enlarge are used.
I have no idea what is causing it, but it seems to be software rather than hardware.
haste75 said:
I only have one option under that test, which is to see a yelow line. It doesnt detect more than one touch at a time though.
I have downloaded a seperate screen testing app, and that detects up to ten points at once - again without any obvious issues with unresponsive.
I really can only reliably replicate the issue when playing games.
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I don't play games on the phone, but did try Modern Combat 3/4, which I have purchased long time ago, just to try them out. So I have played last night and have not had touch screen issues.
Yes I have noticed it, and it has at times been extremely frustrating, and 99% of the time I think part of my fingers holding the phone are touching the screen somewhere, each time I see this and adjust my grip the problem is not longer there. I think this also is partly related to the thread about ghost touches.
AlanJC said:
I notice this issue all of the time in Ingress, however I have tried multi touch test apps and can easily get perfect tracking with 5 fingers on the screen, so I am sure the multitouch and display is working fine, and I have no problems with Google Maps or Waze where similar gestures to tap on things, and two fingers to rotate and shrink/enlarge are used.
I have no idea what is causing it, but it seems to be software rather than hardware.
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Yes exactly the same issue.
I agree I think it's software. Another strange thing is If I flip the phone around (So the headphone jack is now on the right, rather the left), and the game allows the screen to rotate, the issue goes away completely.
Such a strange bug.
Same thing here, and it happens very often. I ran all tests and it seems a software issue. Hope Sony solves it 'coz it's damn annoying.
Just discovered something else, in Ingress, it's always been dodgy with multitouch, however if I put the phone on the table or sofa and just touch the screen it's even worse.
Again using the same gestures in Google Maps it works fine.
I don't understand why not holding the phone would make a difference. I tried propping it up on the table to see if it was related to the angle, but still a lot worse when not holding it compared to holding it.
Never had it during games but during calls it kinda doesn't respond to touches properly.....weird.
I am facing too many issues with the Z3. First the camera quality, then the front bezel leaking light, then the 3G, now touch response. Duh!!! Should've bought the HTC M8 EYE.
No such issue for me so far at least.
Isn't the M8 Eye for China only?
I can't type for **** on my Z3 compared to my SIII. Taps don't register as quickly. Not sure what the heck is going on.
I can confirm that the latest firmware 23.0.1.A.5.73 released by Sony today, has fixed my issues with the responsiveness with the screen and games.
I hope I see that update soon. I can't wait to type quickly and double tap with no issues.
No issue with games but, typing is a chore, it keeps pressing the wrong keys like b for spacebar etc....
AlanJC said:
Just discovered something else, in Ingress, it's always been dodgy with multitouch, however if I put the phone on the table or sofa and just touch the screen it's even worse.
Again using the same gestures in Google Maps it works fine.
I don't understand why not holding the phone would make a difference. I tried propping it up on the table to see if it was related to the angle, but still a lot worse when not holding it compared to holding it.
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I've been noticing this lately as well when using the phone when it's on a flat surface.
Sometimes pulling the notification bar down can take a few times.
While play Ruzzle, it's nearly impossible to spell a word unless you pick the phone up.
Was thinking it might be the way it detects your finger, as I normally use the tip of my finger when it's flat, and my thumb when it's in my hand.