Database Develop

[Q] Screen inaccuracy issues

I know that this has been a fairly common complaint about the Nexus One but i'm wondering, roughly what percentage of people actually have this issue? To clarify, i mean the problem whereby touching the screen in one place is actually registering elsewhere on the screen.
I've had this problem since buying my n1 and having to constantly turn the screen off and back on again was driving me nuts. Finally i sent the unit back to Vodafone for repair and they in turn sent it to HTC to be fixed. So yesterday i got it back with an enclosed statement along the lines of "we have fixed your fault etc..".
Three minutes into using the damn thing and the fault crops up again. So much for that! To be fair to Vodafone they are sending out a replacement unit now but of course i'm concerned that even that will have the same issue.
What are the odds?

Here is the same.
To developers: the fact that resetting the screen fix the problem makes me to ask if there isn't a way to make the screen re-calibrate itself every X seconds/minutes, without shut off and on the screen every time. Seems to be until now the only solution to this extremely annoying issue.

It really is a bizarre one. I've seen people discussing whether it's a hardware or software issue but nobody seems to have a definitive answer. If it were a hardware problem, surely it would be constant/permanent? If it's a software issue i would have thought that somebody would have bug-fixed it by now? Especially as it seems so prevailant.
I'm stumped!
Other than this one problem though i am completely in love with this phone. The device itself feels solid, durable and pleasant to use. Android is improving all the time and it always impresses when you demonstrate to the un-initiated what the device is capable of. So close to perfect...but not quite!
EDIT... This from the wiki.. "- Q5: Sometimes my screen registers touches in incorrect places, and I need to turn the phone off and on to make it work correctly again
A: This is a hardware problem, nothing can be done about it. Nexus One's digitizer sucks.
Ho-Hum.

I have experienced this problem on android 2.1 ever since upgrading 2.2/2.2.1, I haven't had the problem. I'm very happy with my screen
Sent from my Nexus One using XDA App

msavic6 said:
I have experienced this problem on android 2.1 ever since upgrading 2.2/2.2.1, I haven't had the problem. I'm very happy with my screen
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
That suggests a software problem although i have had it on 2.1, 2.2 and now 2.2.1. I would say that it has happened to me within three minutes of using the phone, 50% of the time within that three minute window. In other words it's cropped up in half the texts/emails i have sent where i have had to do the screen off/on thing to complete the message.
Very annoying.

It has to do mostly with the way people hold their phones, the possibility of registering false touches - including, for example, touching the screen with fingers that aren't completely dry. Some have the issue more than others.
HW issues still can have SW workarounds sometimes. I'm not sure if it's the case. HW and SW need to be analyzed to find one, if exists.
There is no "calibrating" capacitive touchscreen. Resetting its controller might have effects like missing touches and other random screen misbehavior (for example - if the controller is tracking fingers, resetting it would cause it to lose the tracking).

Since getting my phone back from 'repair' the issue is less frequent, suggesting that it's not a usage problem as i'm obviously still using the phone in the same manner as before. Instead it seems that various devices suffer from the problem in varying degrees.
I suppose if i knew what they had actually done to the phone while it was being tended to it might help us discover why the frequency of the problem has been reduced. I know that the digitizer wasn't replaced as the phone came back with the same screen protector on it as it had when i sent it off. That being said, they obviously did something. I just don't know what!

Most probably replaced the phone's MB.

Try upgrading to the latest radio - the issue will probably not be 100% solved, but now I only get it maybe once a month or so...

I may tell them not to bother sending out a replacement. It's happening far less often since it was returned and (going by the poll results), there's a good chance that the replacement could actually be worse than this one is now.
Perhaps the 2.3 update will jar something loose.

ATTENTION PLEASE!!
after flashing miui latest ROM i've never had touchscreen issues anymore in over 20 hours of hard usage (also with the phone in charge!!).
I don't believe is a coincidence, developers please ask miui developers if they have integrated a code to fix this issues.
Thanks!
Sent from my Nexus One using XDA App

pyngwie said:
ATTENTION PLEASE!!
after flashing miui latest ROM i've never had touchscreen issues anymore in over 20 hours of hard usage (also with the phone in charge!!).
I don't believe is a coincidence, developers please ask miui developers if they have integrated a code to fix this issues.
Thanks!
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
could you please download Multitouch Visible Test
http://www.appbrain.com/app/multitouch-visible-test/com.batterypoweredgames.mtvistest
and report back?

xyellx said:
could you please download Multitouch Visible Test
http://www.appbrain.com/app/multitouch-visible-test/com.batterypoweredgames.mtvistest
and report back?
Click to expand...
Click to collapse
I have already restored cyano 6.1.1.
However, about "multitouch issues" I mean inaccuracy, the fact that the touch is recognised in another point of the screen (particularly when you press the bottom part of the panel). I didn't verified the axes-inversion issue, but I'm almost sure that it persists.

The "touch inaccuracy" is nothing else than the usual axis-swapping thing. When accidental dual touches (palm/holding fingers/water/etc) happen, the digitizer goes nuts.

Jack_R1 said:
The "touch inaccuracy" is nothing else than the usual axis-swapping thing. When accidental dual touches (palm/holding fingers/water/etc) happen, the digitizer goes nuts.
Click to expand...
Click to collapse
I don't think so....I pay attentions when the screen goes crazy. I'm absolutely sure that (in charge for example) my touch is ONE.

The only times I was able to trigger the "screen nuts" effect, were when I was typing 2-fingered, and fast - making it register dual touches. Moreover, sometimes a single touch with a single finger is reported as series of touches. Once it happens, it stays until screen off.

Jack_R1 said:
Moreover, sometimes a single touch with a single finger is reported as series of touches. Once it happens, it stays until screen off.
Click to expand...
Click to collapse
I mean this....since I moved to MIUI this is not happened anymore.

Since I uninstalled Htcime the inaccuracy issues seem less so far! Almost only with the phone under charge ...much much better than before! Dunno why....
Sent from my Nexus One using XDA App

[Q] That screen...

I've scoured the internet in attempt to resolve this issue, and I know it's been talked about many a time before, but this just doesn't have an answer yet afaik.
Does anybody have any experience with fixing the inaccuracy of the touch screen after prolonged use? I love the nexus one, it's by far the best phone I've owned; but this little bug makes the phone completely unrealistic in real-world use.
If this isn't a software issue, it has to be something with the digitizer being powered off and back on to remove the accuracy bug. In that case, is there any low-level way to turn the digitizer off and back on as fast as possible every X seconds? That would mean losing touch capability for a few milliseconds, but is much better than locking and unlocking the phone each time it "goes wild."

I had given up all hope that this issue could be resolved in any fashion as dodgy hardware is, well...dodgy. Nothing can be done about it right?
I haven't had a screen wonk since starting in on the CM7 nightlies many moons ago!
IN YOUR FACE WONK!

Is there an FAQ about this digitizer issue?

JoeSchmoe007 said:
Is there an FAQ about this digitizer issue?
Click to expand...
Click to collapse
No, but it's been covered so extensively that nobody really mentions it any more. Either that or others have found what i have, that somehow the CM7 ROM mitigates the problem. Seriously, i haven't had an issue with it for months!
My particular N1 was never good with stock ROMs. Hated them and gave me endless trouble with one thing or another. It's the polar opposite for me with CM ROMs. Never any issues at all. No call or screen wonk, none of the bugs that others often complain about. It's like the phone has an attitude!
After flashing something ridiculous like 40+ CM7 Nightlies and stable releases, i've not had to wipe data once

DirkGently1 said:
No, but it's been covered so extensively that nobody really mentions it any more. Either that or others have found what i have, that somehow the CM7 ROM mitigates the problem. Seriously, i haven't had an issue with it for months!
My particular N1 was never good with stock ROMs. Hated them and gave me endless trouble with one thing or another. It's the polar opposite for me with CM ROMs. Never any issues at all. No call or screen wonk, none of the bugs that others often complain about. It's like the phone has an attitude!
After flashing something ridiculous like 40+ CM7 Nightlies and stable releases, i've not had to wipe data once
Click to expand...
Click to collapse
Can you please describe what the digitizer issue was/is? I just ordered N1 and haven't received it yet. And what about call wonk? I haven't seen anything about this one.

JoeSchmoe007 said:
Can you please describe what the digitizer issue was/is? I just ordered N1 and haven't received it yet. And what about call wonk? I haven't seen anything about this one.
Click to expand...
Click to collapse
Basically the digitizer has a couple of quirks. One is that after prolonged use (I found it to be completely random) the accuracy goes berserk, registering touches nowhere near they actually are. Secondly there is a switching of the axis when you cross two points: video. They are hardware related so there is no fix. The wonk is a problem with CyanogenMod7 specifically, causing black screens when receiving calls.
Personally I rarely if ever come across the digitizer problem and have never came across the wonk. They aren't deal breakers but can cause a few problems if you play a lot of multi-touch games.

Hollow.Droid said:
Basically the digitizer has a couple of quirks. One is that after prolonged use (I found it to be completely random) the accuracy goes berserk, registering touches nowhere near they actually are. Secondly there is a switching of the axis when you cross two points: video. They are hardware related so there is no fix. The wonk is a problem with CyanogenMod7 specifically, causing black screens when receiving calls.
Personally I rarely if ever come across the digitizer problem and have never came across the wonk. They aren't deal breakers but can cause a few problems if you play a lot of multi-touch games.
Click to expand...
Click to collapse
When accuracy goes berserk - does powering phone off/on help?

JoeSchmoe007 said:
Can you please describe what the digitizer issue was/is? I just ordered N1 and haven't received it yet. And what about call wonk? I haven't seen anything about this one.
Click to expand...
Click to collapse
Well, the touchscreen issue is nothing more than a bad digitizer that was released with the phone and never improved during manufacture of the device. All Nexii have the same one, although people suffered the problem in varying degrees. What would happen is every so often your touch on the screen would register in the wrong place so you may be selecting a shortcut on your homescreen to launch an app, but it might register the touch as being an inch higher/lower/somewhere random. the solution has always been to simply press the power button to turn the screen off/on again. This would fix the issue... until it occurred again.
The call wonk is really in two parts. Stock GB ROMs had a habit of introducing a slight delay in one party being able to hear the other during the start of a call. On CM7 ROMs it was a more significant issue of black screens and freezes during the start of a call. These didn't affect affect everyone though, and even Cyanogen himself didn't have it on on his own device.
EDIT: The other issue affecting the N1 was a weak, and often failing, power button. With the need to keep using it to fix the screen wonk the problem was made worse. That's why you might often see mentions of Trackball wake as it reduced the need to use the power button, therefore extending it's life. Trackball wake is only available on custom ROMs so bear that in mind too!
The phone isn't perfect but with the custom ROM devs doing there thing it's pretty decent for me

Hollow.Droid and DirkGently1 - I appreciate your responses.
Can I bring your attention to my other question to which nobody responded yet?
http://forum.xda-developers.com/showthread.php?t=1077733

JoeSchmoe007 said:
When accuracy goes berserk - does powering phone off/on help?
Click to expand...
Click to collapse
When the issue happens you just lock and unlock the screen to fix it. No need for a reboot.
This issue isn't really such a big deal. It happens once a week or so, and it takes a few seconds to black out the screen then unlock, problem gone.

Z1 Touchscreen Issues

Does anyone have issues with the touchscreen skipping every once in a while? Occasionally, there is an area on the lower half of the screen that seems to be insensitive, but if you start touching around it, it goes back to normal.
I've discussed this with some fellow Z1 owners and it appears to be a relatively common issue. There is some discussion that it may be due to overheating or a software issue.
Anyone else have this problem?

Had this once while my device overheated hard(~47-48°).
Not sure if I have to be concerned about that, because otherwise it works fine.

koopa101 said:
Does anyone have issues with the touchscreen skipping every once in a while? Occasionally, there is an area on the lower half of the screen that seems to be insensitive, but if you start touching around it, it goes back to normal.
I've discussed this with some fellow Z1 owners and it appears to be a relatively common issue. There is some discussion that it may be due to overheating or a software issue.
Anyone else have this problem?
Click to expand...
Click to collapse
Same here
Sent from my C6903 using XDA Premium 4 mobile app

At first I thought it was an issue with crappy screen protectors. The Z1 already has a anti-crack film on the screen so I thought that adding a poorly made screen protector would create too much distance from my touch to the sensor. However, I've tried replacing the screen protector and also asked other people with varying brands of screen protectors and it seems that the issue still persists.
The issue seems to occur most often on the password screen for me (which is particularly annoying).

I've had it too, lower half of screen does not register slides on login screen for a brief moment.. No overheat!
Sent from my C6903 using Tapatalk

No overheat here 2 but with the same issue.
Also the last days i think that all the screen sometimes is more insensitive than usual.I have to touch 2-3 times to do what i want.
I think that is a hardware issue.

Have it sometimes as well sadly! Can't figure out when exactly it's happening though..
I find it very annoying when I'm scrolling and at the bottom part of the screen, the scrolling becomes a click, which brings me to a place I did not intend to go to. Hope it's software, but can't imagine that.

Happens to me as well, regardless of device temperature. Based on the seemingly random nature of the issue, it should be a simple fix via software update. A similar bug persisted on the 2013 Nexus 7 devices when you laid them flat on a surface.

koopa101 said:
Does anyone have issues with the touchscreen skipping every once in a while? Occasionally, there is an area on the lower half of the screen that seems to be insensitive, but if you start touching around it, it goes back to normal.
I've discussed this with some fellow Z1 owners and it appears to be a relatively common issue. There is some discussion that it may be due to overheating or a software issue.
Anyone else have this problem?
Click to expand...
Click to collapse
Same problem here!!!
I think is a hardware issue. When you touch the alu frame the phone works fine. If the phone is on the table or in a cover the issue are immediately there.
Sorry for my bad english. Hope you understand

I noticed some small things and thought it was me but I guess this makes sense.
Could be worse, my previous Note 3 had multitouch issues and had problems register several fingers :silly:

Considering how common the issue appears to be, I find it hard to believe that this is a hardware issue.
I also don't believe it's related to overheating since it seems to happen even when I haven't used the phone at all for a long time.
It feels like a software issue to me since the issue sends to go away if you touch another section of your screen

koopa101 said:
Considering how common the issue appears to be, I find it hard to believe that this is a hardware issue.
I also don't believe it's related to overheating since it seems to happen even when I haven't used the phone at all for a long time.
It feels like a software issue to me since the issue sends to go away if you touch another section of your screen
Click to expand...
Click to collapse
When you touch the alu frame the issue is not there. Only when you use phone without touching the frame.
Must be some kind of hardware issue...
Sent from my iPad using Tapatalk HD

I am having the exact same issue. The weird thing is, is that it doesn't always fail to register my finger. I've gone a few days without it, then suddenly it's back again. Also in the Xperia Diagnostics app I could then see the phone failing to register a proper line, then 20 seconds later it's gone. Weird thing indeed.
Sent from my C6903 using XDA Premium 4 mobile app

nonamedk said:
When you touch the alu frame the issue is not there. Only when you use phone without touching the frame.
Must be some kind of hardware issue...
Sent from my iPad using Tapatalk HD
Click to expand...
Click to collapse
Is this the case? I don't think I've ever used my phone without touching the frame somehow.

koopa101 said:
Does anyone have issues with the touchscreen skipping every once in a while? Occasionally, there is an area on the lower half of the screen that seems to be insensitive, but if you start touching around it, it goes back to normal.
I've discussed this with some fellow Z1 owners and it appears to be a relatively common issue. There is some discussion that it may be due to overheating or a software issue.
Anyone else have this problem?
Click to expand...
Click to collapse
Yes, I have it as well.. First of all though, to reply to a lot of people on this thread, it happens regardless of "flat surface, touching the frame, overheating", or anything else. It seems to be completely random with me. Sometimes everything is perfect, then it goes nuts for no apparent reason whatsoever. I'm almost sure it's a software issue, and hope sony will address this issue soon!

it also happens sometimes to me.
the only thing that helps is to touch the ground of the ac power socket. it seems like the screen needs much more potential difference between the pointer and the screen itself and after a while of using it the pointer (you and your fingers) are more loaded.
thats my theory to it.

Jimmyness said:
Yes, I have it as well.. First of all though, to reply to a lot of people on this thread, it happens regardless of "flat surface, touching the frame, overheating", or anything else. It seems to be completely random with me. Sometimes everything is perfect, then it goes nuts for no apparent reason whatsoever. I'm almost sure it's a software issue, and hope sony will address this issue soon!
Click to expand...
Click to collapse
Unfortunately, unlike the rooting camera bug, it doesn't sound like Sony has even acknowledge it at all.

Exactly this.
http://www.youtube.com/watch?v=h0sqwwUoEPc
I often have to attempt inputting my password multiple times before I can finally get it right. I have since switched to PIN unlock. Really wish there was some sort of response from Sony.

I'd you're using pie then stop using it and retry the affected area. I had this issues because of the activation area causing certain keys on the keyboard to become non responsive.
Sent from my Z1.

Has anyone tryed the touchfwtool?
URL itechdestiny.com/xperia-touch-screen-solution-touchfwtools-apk-download/
My phone is on the way back from repair. They only have calibrated the screen.

[Q] Screen keeps flickering

Hi all,
Recently my Moto X developed a screen issue. When I load any application, the screen flickers as if the window is being pulled to the top of the screen. The screen will flicker about 3-4 times, during which I can't get the screen to respond in any way.
This started happening after I installed the Google Now launcher, I've since uninstalled the launcher but the screen flickering will not go away.
Does anyone have any idea what is going on and how I can correct it?
Thanks!

kampana said:
Hi all,
Recently my Moto X developed a screen issue. When I load any application, the screen flickers as if the window is being pulled to the top of the screen. The screen will flicker about 3-4 times, during which I can't get the screen to respond in any way.
This started happening after I installed the Google Now launcher, I've since uninstalled the launcher but the screen flickering will not go away.
Does anyone have any idea what is going on and how I can correct it?
Thanks!
Click to expand...
Click to collapse
Are you able to get video of it with another device? Is it the actual backlight that is flickering, or just the elements on the screen flashing around?
You described what sounds like the notification shade being pulled down. I've noticed that I get erratic behavior with my Moto X if there is any moisture on the screen (even a few very small drops), and some chargers. I used the BlackBerry charger that came with my Storm 1 because it had a very long (4-5 feet) cord on it, but it seemed to cause issues with the touch input. I switched to the cable that shipped with my phone and haven't had any issues since.
Maybe try wiping the screen down real good with a microfiber cleaning cloth. Not sure if screen protectors could cause this either, but I would imagine that they could interfere with the touch screen if not applied correctly or designed/made well.

fury683 said:
Are you able to get video of it with another device? Is it the actual backlight that is flickering, or just the elements on the screen flashing around?
You described what sounds like the notification shade being pulled down. I've noticed that I get erratic behavior with my Moto X if there is any moisture on the screen (even a few very small drops), and some chargers. I used the BlackBerry charger that came with my Storm 1 because it had a very long (4-5 feet) cord on it, but it seemed to cause issues with the touch input. I switched to the cable that shipped with my phone and haven't had any issues since.
Maybe try wiping the screen down real good with a microfiber cleaning cloth. Not sure if screen protectors could cause this either, but I would imagine that they could interfere with the touch screen if not applied correctly or designed/made well.
Click to expand...
Click to collapse
Thanks fury683! Yes the elements on the screen flash around, very similar to what it would look like with the notification shade being pulled down.
I've given my phone a good wiping, it's behaving so far but we'll see if it's for good.

Have you tried restarting the device? Just try different little things and you are bound to find your answer.

CrazyIvan3700 said:
Just a reminder but questions should go into the Moto X Q&A area. Have you tried restarting the device? Just try different little things and you are bound to find your answer.
Click to expand...
Click to collapse
This is the Q&A section?

fury683 said:
This is the Q&A section?
Click to expand...
Click to collapse
Oh my gosh, today has been a long day for me. You're right.

CrazyIvan3700 said:
Oh my gosh, today has been a long day for me. You're right.
Click to expand...
Click to collapse
LOL - I had a moderator move it to Q&A. It WAS in General (wrong section). You were correct indeed...don't worry, you aren't losing your mind

Did you fix your problem?
I am having the same issue where my screen will flicker a few times as if another app is being opened by the app switcher. I noticed it happens when I am connecting or disconnecting from Wi-Fi. I tried factory resetting my phone and it did not help. It is very strange. Did anyone else experience a similar problem or find a cause?

Having this issue too — screen flickers when moving back and forth from wifi to 4g
Yes! Took me a while to connect it to offline/wifi/4g transferring, but my screen flickers 3 to 4 times (basically the view refreshes the same way crappy apps that didn't bother programming a transition go from screen to screen) every time I access an app that uses the internet after this transition between data sources. It is infuriating. Anyone ever resolve this?

Fixed it...
PabloChia said:
Yes! Took me a while to connect it to offline/wifi/4g transferring, but my screen flickers 3 to 4 times (basically the view refreshes the same way crappy apps that didn't bother programming a transition go from screen to screen) every time I access an app that uses the internet after this transition between data sources. It is infuriating. Anyone ever resolve this?
Click to expand...
Click to collapse
Got it — I used Titanium Backup (on a rooted phone) to kill MotorolaOTA (backed up first).

Touch Screen Issues

I've started to have touch screen issues the past few days.
Any idea what may cause it?
Sometimes, when I touch the screen, say in settings, I touch one item, but a different item is selected somewhere randomly on the screen.
Happens in TWRP as well. If I select options to wipe, it will select others, and then it doesn't swipe over to execute the action.

No ideas? What would make touches appear where I don't touch, even on TWRP?
I tried the keyboard calibration on HTC's keyboard.
Any ideas? Screen protector?
It comes and goes.

I can't believe no one else is having this issue now.
I don't do stupid things with my phone, like drop it, put it in my pocket and sit on it, and wash it with soap and water.
Since I've started running Lollipop, it appears that my case is causing this issue. I've never had this problem before.
However, I updated my wife's phone to Lollipop Sense and now she is having the same issues with a different case.
Take the cases off, and they work more responsively.
I can only chalk this up to being a Lollipop issue, and hope it will be fixed soon.

mcwups1 said:
I can't believe no one else is having this issue now.
I don't do stupid things with my phone, like drop it, put it in my pocket and sit on it, and wash it with soap and water.
Since I've started running Lollipop, it appears that my case is causing this issue. I've never had this problem before.
However, I updated my wife's phone to Lollipop Sense and now she is having the same issues with a different case.
Take the cases off, and they work more responsively.
I can only chalk this up to being a Lollipop issue, and hope it will be fixed soon.
Click to expand...
Click to collapse
I opened another thread about a similar issue I'm having after Lollipop. My gesture launch randomly stops working and I have to reboot. No other issues for me though. I have an anti-glare screen protector on mine, but had no issues before the update. I've thought about a factory reset to see if that would cure what ails.

I'm on tmo but have the same exact issues. This is what i've found so far...
I turned on the developer options and turned on show pointer. This will show you where the touches are landing.
If you scroll down slowly, you can see most of the touches are in line (up and down) and not random on the screen.
I've removed all programs that have screen overlays (screen filter, twilight etc)
I've removed the cases thinking they might be causing the issue, but removing them only slightly improved the issue I thought...
Sometimes its hard to reproduce the effect, its not consistent. So this leads me to believe that it could be a process that's running in the background that calls attention at the moment you're touching the screen, and then refocuses the screen to your point of contact. And in between it thinks you're moving your finger when you really aren't.
In any event, I can't find the exact cause of this. But, it definitely started after the update to lollipop. I had none of these issues before. I even got the phone exchanged because I believed the digitizer went bad or something. But this issue exists on my original phone, its replacement, and now on my wife's current phone and that phones replacement (across 4 phones).
I'm currently working on my wife's replacement (4 or 5 non-oem programs installed) and continue to have the problem. But it is not consistent as I can't readily reproduce it.
What i've done to try and learn more is when I see the screen pointer light up in random places, I keep pressure on the screen so I can observe where the screen is registering contact. It almost looks as if it's trying to pull down the shade. Whether it be because of the dual points of contact and it thinks we're swiping down, or because of another program that is stealing focus for whatever reason.
If anyone else has insights into this, please let us know as this is more than frustrating! I keep calling people in hanouts with a lot of people and they aren't happy about it lol.
Also for reference, we're using ADW ex launcher instead of Stock HTC Sense. But even when I remove ADW (uninstall) and run sense, it continues to happen. So it's not that.