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[Q] Possible Touchscreen/Multi-Touch issue?

OP espionage724

22nd November 2012, 11:45 PM   |  #1  
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Multitouch Visible Test

With that app, 1-finger touch is alright, no issues.2 Fingers seems alright too. Adding up to 4 fingers seems to be alright and moving them around the screen.

Sometimes with 5 fingers though, they'll all show on the program, and then immediately vanish. If I keep moving my fingers across the screen, they'll pop in and out, but won't actually stay on screen and follow. But this only happens sometimes. Other times, 5-finger input works fine.

My other camera is dead at the moment and I have to run and get batteries for it tomorrow, so I can't actually upload video of what I mean. I was hoping to get some input from other people about how their multi-touch seems to be with that app. Not entirely sure if this is just a rare defect, widespread, or working as intended maybe (not entirely sure if there's anything saying how much multi-touch this screen is; figured it was 10 though)

Some things to try:
- Use 1 finger, drag it all over the screen
- Keep adding fingers 1 by one after dragging them across the screen (add finger, drag it around, add next finger, etc.)
- Don't touch the screen for about 3 seconds, then just have all 5 fingers come in-contact with the screen, and keep them in one spot (on mine most of the time, the points appear then immediately vanish)
23rd November 2012, 12:27 AM   |  #2  
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Could it just be the app your using?
Try using this one...

Check out "MultiTouch Tester"
https://play.google.com/store/apps/d...ltiTouchTester


See if it does the same thing.
Sent from my SPH-L710 using xda app-developers app
Last edited by jjdevega; 23rd November 2012 at 12:29 AM.
23rd November 2012, 01:10 AM   |  #3  
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Quote:
Originally Posted by jjdevega

Could it just be the app your using?
Try using this one...

Check out "MultiTouch Tester"
https://play.google.com/store/apps/d...ltiTouchTester

See if it does the same thing.

Yea it still does the same thing :/ Here's a video:

23rd November 2012, 02:36 AM   |  #4  
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It could be as simple as compatibility issues with the app...

Sent from my SPH-L710 using xda app-developers app
23rd November 2012, 02:40 AM   |  #5  
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Called up Google and it doesn't seem to be widespread (or at least the person didn't say it was), and I could get a replacement under warranty. I don't have the funds to put on hold currently so it'll have to wait if I do decide to do it.

Although I wonder if I really should, I mean I highly doubt I'm going to do anything requiring more then 2 fingers on the screen at any point (nor can I really think of anything), and aside from multitouch, everything else seems great. No dead pixels, back doesn't flex, screen is alright quality-wise.

Would be nice if some other people can try out multitouch though just to see if it really might be widespread or not though. The thing is though, it works fine sometimes, and other times it doesn't. Perhaps software might fix it in time, but I don't know. I thought I heard of the Nexus 7 having a similar issue, but I can't recall...

Quote:
Originally Posted by jjdevega

It could be as simple as compatibility issues with the app...

It seems to do the same even with the "Show touches" option enabled in Developer options (tried it on an empty homescreen).
Last edited by espionage724; 23rd November 2012 at 02:42 AM.
23rd November 2012, 01:07 PM   |  #6  
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Bump
23rd November 2012, 04:51 PM   |  #7  
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Anyone? It only takes a minute or two at the most to test this... and the apps available to do so are free and light.
23rd November 2012, 05:07 PM   |  #8  
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Doing the tests you described never caused anything on my tablet. But if I put my hand down on the tablet flat then put my five fingers on I get your issue. Then wait three seconds and try again and everything is fine till I put my palm back on.
23rd November 2012, 05:23 PM   |  #9  
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Might be a badly configured palm detection algorithme? Op, do you have fat fingers? Sorry if that sounds rude
23rd November 2012, 05:27 PM   |  #10  
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Quote:
Originally Posted by Chluz

Might be a badly configured palm detection algorithme? Op, do you have fat fingers? Sorry if that sounds rude

Lol, hmm, na I don't think I have fat fingers

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