Hi,
My phone seems to register double touch input while i am only using one finger
It only happens only when i pass the my finger over the middle of the screen, ie. a horizontal line in the middle of the screen. This is affecting scrolling and tapping on anything in the middle of the screen.
I just want to know if this a software (calibration) issue or a problem with the screen itself.
see attached a screenshot of multi-touch test using 'Display Tester'.
thanks.
Did you test this with other touch-tester software also?
Like these:
https://play.google.com/store/apps/details?id=org.hermit.touchtest
https://play.google.com/store/apps/details?id=com.batterypoweredgames.mtvistest
https://play.google.com/store/apps/details?id=com.the511plus.MultiTouchTester
nihil0 said:
Did you test this with other touch-tester software also?
Click to expand...
Click to collapse
I did, they all show the same problem.
It seems any touch in the 'Y' range between 145 and 190 will register as two touches. I have attached another screenshot. I tried a calibration tool for Nook tablet, but nothing improved.
Related
Ok I noticed this little issue with the touch screen.
Maybe this is how it is meant to work but just wondering if its the same for everyone.
Basically when you first touch the screen and then move your finger in tiny movements back and forward like 2-3 pixels distance the screen just recognises your initial place you touched. It doesnt recognise the little movements. You have to make a bigger movement with your finger and then the screen starts recognising these tiny movements.
Its like its been set up with software to only track your finger if it moves a minimum distance. If this distance is not met then keep the original place where the screen was touched.
Best way to see this is get a multitouch test app from the market. Basically just one that gives you a dot under your finger when you touch the screen.
Touch the screen and move your finger in tiny movements back and forward. Like really tiny (2-3 pixels in distance)
Does the dot move or does it stay there like its stuck ?
Then you have to make a bigger movement with your finder before the dot starts moving. But after that you can do those tiny movements you did before and the dot moves.
Hope someone understands what i'm saying.
My old phone didnt do that.
Someone try this please
What about touch screen settings are their any ??
jje
sorrowuk said:
Touch the screen and move your finger in tiny movements back and forward. Like really tiny (2-3 pixels in distance)
Does the dot move or does it stay there like its stuck ?
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Same result for me, very small movements of the finger are not registred...
I think the touch screen driver needs work or calibration, see other posts regarding screen sensitivity, screen doesnt pickup light touches sometimes, sometimes I have to make a defined press on the screen for it to work. I have decided I dont mind this now as it is less likely to pickup accidental presses but I still think it is a little under sensitive.
The thing is if you make a big movement and then with your finger still held on the screen make little small movements it recognises them. Its only when you first touch the screen it doesnt recognise the small movements.
Its like its been set up with software to only track your finger if it moves a minimum distance. If this distance is not met then keep the original place where the screen was touched.
Maybe for typing etc so you dont accidently hit another key.
Anyone else able to confirm ? See if it detects tiny movements when you first touch the screen, and then move your finger around for a bit and then try tiny movements it should work then
sorrowuk said:
Maybe for typing etc so you dont accidently hit another key.
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Click to collapse
Yup, definitely not a bug IMHO - just tried while playing angry birds and it nails it to the half pixel - there's nothing wrong with the hardware. I find the lack of registration of small touches a major plus, I suppose they should add a menu to disable it for those who don't like it
sorrowuk said:
Hope someone understands what i'm saying.
My old phone didnt do that.
Click to expand...
Click to collapse
I know exactly what you're talking about.
Here is a test for all of you, go onto a webpage, view it at it's native resolution, which will be bigger than your screen res.
1) Drag the screen at 180 angle directly horizontally, say to the right do this slowly and move the screen a bit.
2) Now try scrolling the screen upwards or downward, slowly and carefully without taking your finger off the screen.
3) you should find that the screen is now not responding to your careful touch to scroll in a different direction you originally was scrolling.
4) given that you seem to be locked into scrolling left or right only, drag fast and long distance either upwards or downwards (or diagonally)
5) hey presto, you can now scroll in any direction again with movements as small as you like
Its weird on angry birds, it detects these really small movements.
But on Nova HD for dragging the camera it doesnt detect these really small movements.
However if you make a big movement it then will detect the really small movements as long as you don't take your finger off the screen or you have to start over again.
Another way to see this, is on the lock screen.
Touch the lock image wait a few seconds then move your finger like 2 pixels left and right (really small amount).
The lock image won't move at all. However if you then make a big movement so the lock image starts moving (and keeping your finger still on the screen) then move your finger 2 pixels left and right it moves.
Touch the image and wait a few seconds , then move your finger
Seems like its something to do with software. Not sure how angry birds manages to avoid it.
I reckon it can be patched so it doesnt act like this. I wouldnt have a clue how to do it tho. Someone might tho
Anyone tried it on the lock screen? Same thing ?
http://forum.xda-developers.com/showthread.php?t=1072471
This?
Yep thats it there ^^^ . Thanks.
Hopefully it can be modded. Looks like samsung added a minimum threshold
Yeah I hope so too... looks very annoying.
sorrowuk said:
Yep thats it there ^^^ . Thanks.
Hopefully it can be modded. Looks like samsung added a minimum threshold
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Its annoying when playing nova hd trying to move the crosshair
Hello all,
I'd like to know if the multitouch issue I'm hitting is more likely to be a hardware or software issue.
Singletouch working normally and accurate.
Multitouch recognises fingers approx 1cm over actual position.
Trying to describe...
if I'm only using 1 finger its ok and the pointer is where my finger is but if I'm adding a second finger the pointer moves ~1cm up.
So both fingers are way below the position the streak thinks they are.
Using DSC v2.2 and dont hit this issue on a 2nd streak.
Tried to use the touchscreen calibration but didnt change anything.
Is it possible that this issue is related to the hardware?
Thanks,
You can test with "multitouch tester" from playstore
Sent from my Dell Streak using xda premium
Ok, way easier to visualise...
Seems like I've a moveable dead zone within my streak.
To explain see attached pic.
If finger one is where it is located on the pic and finger 2 is either above green line 1 or below green line 2 everything seems to work ok.
But if the finger 2 is set between both green lines both circles are set completely to the mid.
Also depending on the position of finger 1 the deadzone/green lines move.
Can this be somewhere within android and is somehow repairable or more likely hardware?
I dont hit that on a 2nd streak with dsc2.2 (so both on dsc 2.2)
I'm pretty sure it's hardware issue.
Hello
I own a Xperia Tablet Z, let me get straight to the point...The device works perfect under water and the video recording, but every now and again the water pressure interacts with the screen and stops the video recording, this can be easily fixed if the camera app had a lock option, like a gesture or a hardware button that can be assigned to lock the screen when needed, i will be fine if there is a app for it, since I don't always need to lock the screen, when I do i can use the app. I then came across a app called Argus Touch Blocker, which works just like I want it to, the only problem is, yes it blocks the whole touch screen, but not the navigation buttons at the bottom of the screen which is part of the touch screen, but for some reason is it still touchable. Can anyone point me in the correct way to get these results?
MasterCMTS said:
Hello
I own a Xperia Tablet Z, let me get straight to the point...The device works perfect under water and the video recording, but every now and again the water pressure interacts with the screen and stops the video recording, this can be easily fixed if the camera app had a lock option, like a gesture or a hardware button that can be assigned to lock the screen when needed, i will be fine if there is a app for it, since I don't always need to lock the screen, when I do i can use the app. I then came across a app called Argus Touch Blocker, which works just like I want it to, the only problem is, yes it blocks the whole touch screen, but not the navigation buttons at the bottom of the screen which is part of the touch screen, but for some reason is it still touchable. Can anyone point me in the correct way to get these results?
Click to expand...
Click to collapse
Did You try this 'small app' http://forum.xda-developers.com/showthread.php?t=2432188 ?
ibis69 said:
Did You try this 'small app' http://forum.xda-developers.com/showthread.php?t=2432188 ?
Click to expand...
Click to collapse
THANK YOU SOOOOOOOOOOOOO MUCH, i completely forgot about small app
MasterCMTS said:
THANK YOU SOOOOOOOOOOOOO MUCH, i completely forgot about small app
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Click to collapse
This doesn't work with the 4.3 update ideas?
Hello,
Is anyone else having this issue? Like touch screen doesnt respond very well at the top left corner (^<), im running on 5.0.2 lollipop. You can inspect this by slowly swiping the navigation bar at the top left corner or while playing a game (buttons wont function)...
Best regards,
James
bump...
Daentrod said:
bump...
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its working fine here on 850f running lollipop. ive tried many times real slow n fast. But i cant say anything about screen not working during games cuz i have no games on my phone.
I am facing the same problem from 1month.
I have replaced Screen (previously Display was broken and i had replaced)
Previous one had same problem ( Top left ) , before i went to Service centre , i droped my phone and its display was broken , i have replaced display around 4months ago , and now from 1month i am facing the same problem again ,
When i Swipe notification panel from very Left side , at 40% times , it doesn't drop down , it goes upwards ,
I have faced in Six guns game , Moving button isnot working properly sometimes , than i have to lock the screen , and unllock the phone again , after that touch starts working normally , again It stops again i lock the screen and so on.........
So is this common problem with most of the Alpha's screen ?
Same issue here... bought 2 months ago with Lollipop 5.0.2 already installed. Very annoying with games!!
By the contrary, I also noticed extremely high sensitivity over the screen: I don't even need to touch the screen to press buttons, simply approach finger by half centimeter it is enough. I don't know if it's something expected, but I didn't noticed this with my former Galaxy S.
cobola said:
Same issue here... bought 2 months ago with Lollipop 5.0.2 already installed. Very annoying with games!!
By the contrary, I also noticed extremely high sensitivity over the screen: I don't even need to touch the screen to press buttons, simply approach finger by half centimeter it is enough. I don't know if it's something expected, but I didn't noticed this with my former Galaxy S.
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Click to collapse
Its a very strange thing , touch fixed it self and its working fine again since 15 days , i think its software problem
it happened with me too , i'm running 4.4.4 stock , i wasn't able to tap on the wifi button on the top left , enabled the "show touches and show pointer location " on developer options and found that the top left corner is not working , strangely i restarted the device and its all working again so i think its a software problem , also i'm suspecting its related to using a screen protector , didnt try further tho
or1n said:
it happened with me too , i'm running 4.4.4 stock , i wasn't able to tap on the wifi button on the top left , enabled the "show touches and show pointer location " on developer options and found that the top left corner is not working , strangely i restarted the device and its all working again so i think its a software problem , also i'm suspecting its related to using a screen protector , didnt try further tho
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Click to collapse
It seems it's not software related, issues are confirmed both with Kitkat and Lollipop.
It's strange because on my alpha i haven't notice any issue about the touch screen.
Please, can you do this simple test to analyse the overall screen sensitivity?
On 'Settings' go to 'General' tab.
Then roll down to 'Developer Options'.
Activate "Show touches" and "Show pointer location" - it will show the touch interactions on screen (it looks like scratches but don't worry they are just drawings).
Then slide your finger over the screen surface and notice if the track is marked in all areas. Especially in the upper left corner. If you notice a fault on the track in this spot it means the screen has a 'dead' sensitivity area.
cobola said:
Please, can you do this simple test to analyse the overall screen sensitivity?
On 'Settings' go to 'General' tab.
Then roll down to 'Developer Options'.
Activate "Show touches" and "Show pointer location" - it will show the touch interactions on screen (it looks like scratches but don't worry they are just drawings).
Then slide your finger over the screen surface and notice if the track is marked in all areas. Especially in the upper left corner. If you notice a fault on the track in this spot it means the screen has a 'dead' sensitivity area.
Click to expand...
Click to collapse
I found there is a more simple way to run several test on our device (and also available in other Samsung models): type on the telephone keypad *#0*#
As I reported previously, my screen was touch insensitive on the upper left side. Everyone can check this running the 'Touch' test.
My screen module was replaced under warranty and it seems fine now.
My redmi 3s screen was broken and I managed to replace it, altough I found the repair very difficult. The new screen works but the touch calibration is a little off. The bottom part of the screen registers touches about 0,5 cm lower, this makes typing difficult. The upper part seems to be ok so I am typing this with the phone upside down... Is there are way to manualy calibration the touch screen? I already tried the touchscreen calibration app but didn't help, maybe because the app registers touches in the upper part of the screen...
Hello nightraver.
Did you find a solution for that ? I also changed my screen and I have the same problem.
Thanks.