Develop Bugs

Anyone's touchscreen ever failed??

My desire z is going back for warranty tomorrow ...
The touchscreen and the buttons just under it stopped working without any warning.
Anyone else had similar issues??
Now unrooted with the latest ruu.
Back to my magic
Sent from my HTC Magic using XDA App

When you say it stopped working, did you by any chance have the phone on a worktop? or was you holding it in your hand?
There are reported issues with phones not working all the time when on a worktop, however mine always works when its in my hand.

When my phone is laying flat on any surface the screen just refuses to respond... however if I angle it just slightly it works just fine, or if I pick it up.

I have the same issue when its in the car dock. I didn't have the issue when I was running the stock bell rom this only happened when I installed cyanogen 6.1

My g2's touchscreen gets super lllaagggyyy, like laggy as crap whenever it is connected to the charger @ near full charge. It's random...yet it's not, like for instance..I can put it on the charger and initially it's very responsive. Then, after a few minutes charging the screen *seems* to be unresponsive, I just have to swipe it slowly and it jerks by @ like..5fps seemingly. This has happened on every rom ive tried so far from stock to CM.
Just installed MIUI and haven't had a chance to test..i'm assuming it's hardware related though.

When I First got my G2, The TMo Rep asked me to open it up at the store since i was getting the first one from that store and the touch screen didnt work at all, we turned it off and on and nada. So they replaced it with another one and it worked just fine. Other than that little problem i never had a issue on my G2 as far as touch screen freezing goes

Seems like shoddy hardware to me... I've never dropped the phone.. its always been in a protective cover.
Although I couldn't help thinking.. maybe all the extreme overclocking / general heating up of the phone may have contributed??
Sent from my HTC Magic using XDA App

I have never OC my desire Z (not G2) but I have noticed the exact same symptoms of an unresponsive touch screen after flashing cyanogen 6.1.
I returned back to my stock rom and everything is back to normal.
I haven't had a problem since..

yes, when its on a worktop (table, desk, anything not my hand) and in a dock -- its not as responsive as you'd expect. I have to hold it and caress it with my warm loving hands to get it to respond.
now ---
this is not related to CM 6.1. at all. Ive flashed a lot of things since visionary and its happened on every single rom.
Id go get that phone out of the mail if I were you OP.

I have also noticed the problem with touch screen responsiveness when my G2 is mounted in a car holder.
I have figured that you just have to keep one finger on the aluminium body and the problem is gone. I have to admit that this is somewhat bizarre and I have never had this problem before with my G1 using the same car holder. Seems that there is an issue with electric isolation? I don't exactly understand how capacitive touchscreen works so can't really explain where the dog lies buried.

Maybe this is a feature. Protection and saves battery.
vision...

squbel said:
I have also noticed the problem with touch screen responsiveness when my G2 is mounted in a car holder.
I have figured that you just have to keep one finger on the aluminium body and the problem is gone. I have to admit that this is somewhat bizarre and I have never had this problem before with my G1 using the same car holder. Seems that there is an issue with electric isolation? I don't exactly understand how capacitive touchscreen works so can't really explain where the dog lies buried.
Click to expand...
Click to collapse
The same for my DZ - it is kinda weird, because if the phone is for example in the car holder it is impossible to use the touchscreen unless I put another finger on the phones housing. I tried different roms already, but the 'error' is still there.
It would be interesting if all users have the same problem or if it is just a few examples of phones out there.
Thanks,
Robert

Wow,.... only just noticed this a few days ago. Along with it not vibrating on incoming SMS, i'm starting to get slightly ticked off.

yeah happens to mine too =P

happens to mine also, nothing we can do about this?

[Q] Advice on unlock/digitiser issue

Hi
I upgraded to my new DHD less than 3 weeks ago. It is not rooted and I did the recent OTA update over Christmas.
Over the last couple of days I have started to experience difficulty unlocking the device on the slide-to-unlock screen. The problem seems intermittent - somethimes it will unlock fine, and other times the slider just seems to "get stuck" at the bottom of the screen.
At first I thought this a bug or something, but after some investigation I am concerned there is a problem with the digitiser. I opened a picture and zoomed in to fill the screen and tested the touchscreen in different places by sliding the picture around. What I found was that the bottom 1cm of the screen above the keys does not respond properly to Up and Down swipes. It is fine however with side-to-side and also individual taps. This is obviously a problem when trying to move the unlock slider!
I've had a screen protector on for about a week - I don't imagine this has caused the issue but haven't removed it to test as yet as I don't have a spare. Aside from this, the device has been very well looked after, definitely no bumps etc and kept in an HTC leather pouch.
Any ideas? Should I return it to CW?
Thanks

OK, I seem to have resolved this for the time being but expect the problem to return.
I downloaded a screen test app that allows you to draw on the screen and got some very strange results. A 1cm band of screen about 1cm up from the bottom was completely unresponsive. Trying to draw a horizontal line within this band would result in lines being drawn either above or below it, or strange vertical lines "jumping" around. The rest of the screen was fine. I realised this is why I have been struggling to close the keyboard - the button is placed within this band and trying to press it would result in on of the buttons above or below being pressed. Also have had problems with the sapce bar.
I did a restart (not fast) and this has resolved the issue, however I expect it may return as I did a restart only yesterday.
At least it is obviously software and not the digitiser....

Hi again. As expected, the issue returned after a couple of hours. This time however, restarting is not making a difference.
I resorted to a hard rest, which has not changed anything either.
Any help/ideas would really be appreciated...

Best to return it for repairs or exchange. Seems like the digitiser is faulty.
Sent from my Desire HD using XDA App

olivierlee said:
Best to return it for repairs or exchange. Seems like the digitiser is faulty.
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
I agree, this definitely sounds like a hardware problem.

Xperia plays touchscreen

hey there guys and girls,
This is my first post and was just wondering about my xperia plays touchscreen. I bought it almost a year ago and since i got it the problem has been occuring. Its not major dont get me wrong but it can be really annoying when i am texting my frineds. What happens is that i will press a letter then it will just decide to press a bunch if other letters next to them. Also the keyboard will randomly go down so ill end up clicking send and completely wasting a text.
Any help would be great... Thanks xD

Large fingers? lets hope its not a digitizer problem but you did state its been happening since you got the phone. the xperia play does seem to me to be more sensitive to the amount of pressure needed or not needed; or is it just me?
Got used to using swype keyboard on my sgs and haven't used the stock keyboard on the play.
you could try to clear data for the keyboard Settings>Applications>Manage Applications>All>"keyboard"
maybe another keyboard will solve your problem entirely, there are plenty of them on the market/store.
this is just one as there are many
https://play.google.com/store/apps/...xLDEsImNvbS52bGx3cC5pbnB1dG1ldGhvZC5sYXRpbiJd
edit: forgot to mention, if you install this or any other input method you will first need to enable it in Settings>Language & keyboard>"keyboard"
just tick the box next to the keyboard and it will give you a prompt; read>OK
then say in messaging just press and hold on the text input field and select input method>select keyboard you want to use
also, when your keyboard disappears for whatever reason or doesn't show when needed you can press and hold the menu button for a few seconds to bring your keyboard up or make it go away.

I pulled off the screen protector and that seemed to fix it for me.

i've been having the exact same problem, it seems to occur mostly when my phone is charging or when it's too warm. Didn't bother sending it back though, but yes, it can be verry annoying when trying to text

Don't worry, its a standard Sony Ericsson issue. Usually occurs when the device overheats.
Reboot or look into ROM flashing and the problem will be resolved
Sent from my Xperia Play using xda premium

Mine does that when there's moisture on the screen, or when plugged into the charger. I've found typing to be much less annoying in wet conditions when using Swype.
Dry off your screen often enough and it should help. Removing the anti-shatter film (which is next to useless anyway) also makes a difference.
Sent from a parallel universe

Welcome to XDA!
Try solutions posted above.
If You ever need to test any piece of hardware on your phone, try accesing serice menu by typing this code in Dialler:
*#*#7378423#*#*
From there You can access Service tests menu and test Your Touch Screen/Earphone/Display just to mention a few.
Also screen protector isn't any good for me, standard keyboard is too small and stock firmware is to laggy to type messages. Solution is easy if You are ready to give your phone a boost by flashing it as mentioned by someone else above.

Wow, there is a great amount of different anwsers
I remember that someone on these forums said that Xplay has problems with multitouch regonizing (or something)
Basicly, the touch points wont reset unless you do something (i dont remember what)
Personaly, i just press powerbutto to "shut down" my screen, press main menu butto and open the lock, its all back to normal
EDIT: wait few seconds (like 5 or so) before you reopen the screen

i'm having a similiar problem, i charged my phone with 5v a couple times, so the last week, the touchscreen doesn't work. sometimes it does, it has been abit tricky. it like works sometimes, with an effort of constantly mashing the screen (with swipes and presses), but the last 24 hours, it's been practically dead. every other part of the phone works, like LED, pad controls, speaker, etc etc, just touchscreen is dead... any solution, methods?

Maison Looi said:
i'm having a similiar problem, i charged my phone with 5v a couple times, so the last week, the touchscreen doesn't work. sometimes it does, it has been abit tricky. it like works sometimes, with an effort of constantly mashing the screen (with swipes and presses), but the last 24 hours, it's been practically dead. every other part of the phone works, like LED, pad controls, speaker, etc etc, just touchscreen is dead... any solution, methods?
Click to expand...
Click to collapse
Broken digitizer maybe?
Sent from a parallel universe

captain67 said:
Broken digitizer maybe?
Sent from a parallel universe
Click to expand...
Click to collapse
how would one go about fixing this?

captain67 said:
Broken digitizer maybe?
Sent from a parallel universe
Click to expand...
Click to collapse
if so, replacement is easy right?
same time is, sometimes it's been working and sometimes not...

bigcez74 said:
how would one go about fixing this?
Click to expand...
Click to collapse
Honestly, I have no idea. I just know that the digitizer is what makes the touch screen work, and that there have been xda users buying them for replacement parts before.
Sent from Asgard

I have been getting this problem when coming in from outside. I can hold my finger about 1cm above the touchscreen and it will type random letters as well. Seems to be affected worse in bottom left hand corner for me. It settles back down after a while of being indoors. Its really weird though.
Sent from my R800i using Tapatalk

simacca said:
I have been getting this problem when coming in from outside. I can hold my finger about 1cm above the touchscreen and it will type random letters as well. Seems to be affected worse in bottom left hand corner for me. It settles back down after a while of being indoors. Its really weird though.
Sent from my R800i using Tapatalk
Click to expand...
Click to collapse
That's because the difference in temperature and humidity causes condensation to gather on the screen, temporarily. Capacitive touch screens work by conducting electricity, and moisture is conductive.
Sent from Asgard

captain67 said:
That's because the difference in temperature and humidity causes condensation to gather on the screen, temporarily. Capacitive touch screens work by conducting electricity, and moisture is conductive.
Sent from Asgard
Click to expand...
Click to collapse
Ahh, I see. That makes sense. I took the factory installed screen protector today as well. I'm hoping this will help too.
Sent from my R800i using Tapatalk

[Q] Erratic/Jumpy Multi-touch

Update: Star this Android issue if affected: http://code.google.com/p/android/issues/detail?id=58401
I'm noticing intermittent bouts of erratic multi-touch on the Nexus 7 (2013) 16GB. I exchanged one device already hoping that it was a HW defect, but my second device behaves in exactly the same way.
Chrome, Dolphin, web-view, maps (especially maps) will often jump all over the place during pinch-to-zoom. Sometimes it works fine, but too often, it jumps zoom levels erratically. Edit: This also manifests as double taps and/or "ghost taps" when using the keyboard.
I've installed YAMTT (Yet Another Multitouch test) and I've observed the touch points disappear, change direction and even suddenly register a 3rd touch. None of my other devices do this.
I'm reluctant to exchange the device yet again, but I haven't read about anyone else who's witnessed this. Am I alone in observing this behaviour?
Edit: Here is a terrible video attempting to highlight what I'm seeing in YAMTT: http://www.youtube.com/watch?v=_ZRiMiNzs0U
And another video in Google Earth (fixed): http://www.youtube.com/watch?v=14cPiiM3Pwg
Someone else experiencing the issue: http://www.youtube.com/watch?v=Xpl26UgcuSs
FINAL UPDATE: I exchanged the device again and the issue is gone (so far). My advice: if you're experiencing this issue, return it. If it continues to happen, return it again until it works.
As a side note, for those experiencing the mushy/hard to press power button, that issue was fixed for me as well.
Final Update Part 2: I am sad to say the issue is still present after all. I'll admit that it is less prevalent than with my first two N7s and the "jumps" are less severe. However, it's still there and I'm not prepared to live with it. Therefore, I am returning the device to get my money back. I'll keep up to date with this issue, and I'll likely buy it down the road when a clear resolution presents itself. I know it would be a great tablet without this problem.
To recap my experience:
First N7 had erratic multi-touch, stiff power button, keyboard and other touch screen issues. Exchanged.
Second N7 had a good power button, but the erratic multi-touch and keyboard issues were still present. Exchanged.
Third N7 had a perfect power button and no keyboard issues, but the erratic pinch to zoom was still present (though less severe). Returned.

it happen to mine while typing nothing a software update can't fix or even better custom rom

Speedy Gonzalez said:
it happen to mine while typing nothing a software update can't fix or even better custom rom
Click to expand...
Click to collapse
You're probably right. I was just concerned that no one else had mentioned it. I find this behaviour quite annoying.

Does the issue go away if you actually held it with the other hand (going by video)? Sounds like the behavior of the 1st gen N7.

mi7chy said:
Does the issue go away if you actually held it with the other hand (going by video)? Sounds like the behavior of the 1st gen N7.
Click to expand...
Click to collapse
I'll try that, thanks. I have the original Nexus 7 as well and never noticed this issue. Could you elaborate a little? Was the issue eventually resolved?

JayBomb999 said:
I'll try that, thanks. I have the original Nexus 7 as well and never noticed this issue. Could you elaborate a little? Was the issue eventually resolved?
Click to expand...
Click to collapse
It's designed to be used on a grounded surface either held in hand or on a grounded surface. It's an electrical behavior so I doubt software would change that. Please try held in hand and report back.

JayBomb999 said:
I'm noticing intermittent bouts of erratic multi-touch on the Nexus 7 (2013) 16GB. I exchanged one device already hoping that it was a HW defect, but my second device behaves in exactly the same way.
Chrome, Dolphin, web-view, maps (especially maps) will often jump all over the place during pinch-to-zoom. Sometimes it works fine, but too often, it jumps zoom levels erratically.
I've installed YAMTT (Yet Another Multitouch test) and I've observed the touch points disappear, change direction and even suddenly register a 3rd touch. None of my other devices do this.
I'm reluctant to exchange the device yet again, but I haven't read about anyone else who's witnessed this. Am I alone in observing this behaviour?
Edit: Here is a terrible video attempting to highlight what I'm seeing in YAMTT: http://www.youtube.com/watch?v=_ZRiMiNzs0U
And another video in Google Earth: http://youtu.be/14cPiiM3Pwg
Click to expand...
Click to collapse
I've got this a little bit, glad I'm not the only one with the problem, mine only does it when I hold it above me and use it lol. Everything else is fine with mine so I'm keeping it.

Are you sure this is a software issue?
I remember back when I had an HTC Desire, it had multitouch issues but the fault lay with the digitizer and no update could fix it.

mi7chy said:
It's designed to be used on a grounded surface either held in hand or on a grounded surface. It's an electrical behavior so I doubt software would change that. Please try held in hand and report back.
Click to expand...
Click to collapse
I've tried gripping in both hands, from the bottom bezel, on the table and on the couch. Still, I see this behavior. It's not constant, but it's prevalent enough that I don't know if I'm going to keep it.
It sucks because otherwise I really love it.

I dunno. I'm seeing weird anomalies with mine. Moving 2 fingers around, a random 3rd pops up.
Hopefully just software woes. The Galaxy Nexus did this, N7 did this, and now the new N7. Its rare. Haven't had a problem.
Sent from Nexus 7 FHD from XDA Premium HD

I just ran the same tests you did using YAMTT and did not have any of the same problems. I haven't noticed any mutlitouch issues either.

JayBomb999 said:
...
And another video in Google Earth (fixed): ...
Click to expand...
Click to collapse
I found this thread looking for someone else who was having the problem I was - my device was doing exactly the same thing in Google Earth. Thanks for posting it!
Oddly enough now that I've found this thread, the device isn't doing that anymore. It's tracking perfectly in Earth and also in YAMTT.
It tracks fine when being held in one hand, on a grounded or not surface, when touched with one hand or two.
Very odd.

I had this issue with my 1st n7 2nd gen (which i bought yesterday). I returned it to bestbuy and got a new one which seems to be fine.

GreenXSniper said:
I had this issue with my 1st n7 2nd gen (which i bought yesterday). I returned it to bestbuy and got a new one which seems to be fine.
Click to expand...
Click to collapse
I've already exchanged it once and each had this issue. I think I'm going to try again tomorrow. I'll report back.

I had a similar issue with google earth on my 1st gen N7. I can't test it anymore, tho, because its sitting at the bottom of a lake. But it would randomly zoom out or in like crazy or jump halfway across the world.

I have this issue extremely annoying. My keyboard double presses letters at times, zooming I have ttrthe problem, trying to long press a link I also get it unregistering touch
I hope this. Is. Software I don't waqmt to return this. Otherwise perfect device. You can see it happoening as I try to type

This actually happened to me for the first time about an hour ago. As said before, I hope this is a simple software bug, and not some serious hardware issue. Quite frankly, I have a feeling that going through a return is going to be messy, as I've bought mine from my local Gamestop.
From a GNex

carfreak715 said:
This actually happened to me for the first time about an hour ago. As said before, I hope this is a simple software bug, and not some serious hardware issue. Quite frankly, I have a feeling that going through a return is going to be messy, as I've bought mine from my local Gamestop.
From a GNex
Click to expand...
Click to collapse
The gentlemen that posted the following video said he exchanged his device and the problem went away: http://www.youtube.com/watch?v=Xpl26UgcuSs
I know it's only one person, but this leads me to believe it might be a hardware/quality issue. I have exchanged mine once for this issue already (Best Buy) and it was extremely easy. I am going to exchange one more time and will report back my findings.

nba1341 said:
I have this issue extremely annoying. My keyboard double presses letters at times, zooming I have ttrthe problem, trying to long press a link I also get it unregistering touch
I hope this. Is. Software I don't waqmt to return this. Otherwise perfect device. You can see it happoening as I try to type
Click to expand...
Click to collapse
I didn't mention the keyboard issue. I too am seeing ghost taps when typing.

Hmmm. No ghost taps here. I've been on xda a lot since I got this.
Not good though. Could just be a bad batch. Seems like the dead spots would be caused by a hardware issue... Bad connections or something.
Sent from Nexus 7 FHD from XDA Premium HD

Galaxy Note 8.0 need advice!

GT-N5110 wifi version. Ive had this device for 10 days. Out the box it was running 4.1.2 and seemed work great other than the occasional 3-5 seconds when screen would become unresponsive during normal use. After using it for a few days I decided to go ahead and update to 4.2.2 thinking maybe it would fix the screen issue. It did fix that issue but now im having another problem. After the device sits dormant for awhile the screen doesnt respond to touch but still works fine with the s pen. Ill turn it on after sitting all night and after swiping to unlock the screen it becomes unresponsive. I usually have to lock/unlock the screen several times before it will start responding. After it starts working I can be on it for hours with no more problems. But if I lock the screen an set it down for awhile when I go to use it again it does the samething. It seems like it has to warm up. I tried doing factory data reset but that didnt help. It is rooted also but the only thing ive done so far is get rid of some bloatware.(i didnt root it untill after the problem started). Anyone have any advice?

Do you have your note in a cover , and if so does it have a magnet.
Sent from my GT-N5110 using xda app-developers app

That does sound rather crazy, the unresponsiveness is out of the ordinary... did you try turning off a lot of the extra features built in by Samsung? another thing you could do is download Clean Master from the play store and take a look at your Ram use-age and clean out some cache files with it, this might help with the lag. The touch response could be hindered due to a case or screen protector... other than that the only thing i could think is if there was physical damage done to it before that could cause the touch screen to act that way.

Ummmm... I would have taken it back to the store and asked for a replacement.
That is not normal at all. even with the device's settings left alone, there should not be any issues with responses with touch.
Note... The pen feature is totally separate from touch. The screen has two different features, one being a digitizer for the pen function the other for touch. It is possible that during assembly that the connection for the touch screen is faulty, as a bad solder joint during wave process could make the connection heat related. As the device cools, the contacts contract causing a fault with touch operation. When heated up from normal use, expansion forces contact between connector and board for normal operation to function with touchscreen.

livis n fur said:
Do you have your note in a cover , and if so does it have a magnet.
Sent from my GT-N5110 using xda app-developers app
Click to expand...
Click to collapse
Using another case without magnets fixed the problem for me
Sent from my HTCONE using Tapatalk

FrozenRiff said:
Using another case without magnets fixed the problem for me
Sent from my HTCONE using Tapatalk
Click to expand...
Click to collapse
The problem was my samsung book cover! Can't believe samsung would make a cover that causes these kinds of issues. Glad I only paid 7 bucks on ebay instead of 50 at best buy. Thanks guys for the comments!

TwanMan87 said:
The problem was my samsung book cover! Can't believe samsung would make a cover that causes these kinds of issues. Glad I only paid 7 bucks on ebay instead of 50 at best buy. Thanks guys for the comments!
Click to expand...
Click to collapse
Thanks for the FYI. I was using the moko whatever with a keyboard and I got the freezes all the time. I was thinking about the official Samsung one but if that gives you problems then forget it. I almost sold this thing on eBay cause I couldn't take the freezes anymore. Now I use a tpu case with it and couldn't be happier
Sent from my GT-N5110 using Tapatalk