Sensitive screen cause? - Acer Iconia Tab A100

This topic has been discussed before and some blame the hardware defects, some blame software. Today I inadvertently noticed grid of dots on the screen when I looked at it at an angle in sunlight. I believe these are capacittive sensors. The sensors are not dense, about 2/3 of a cm apart. Bad capacitive screen design? I do not see such things on my phone screen. The phone doesn't have screen sensitivity problems.
Sent from my A100 using xda premium

I had to replace my a100 due to that sensitive problem. I have a new one and now it works fine. Before that, I tried everything I could to try fixing it by software, but it was impossible.

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[Q] Screen sensitivity Issues??!!

I noticed an issue with the screen of the galaxy nexus.
-It seems that it does not regester the touch of my finger as good as my nexus s. " once you touch the nexus s screen very lightly you see a direct response. In the GN the light touches does not regester. Is that normal??
-Another way to test for it is using a stylus... the nexus s works perfectly with the stylus touch. In the GN you have to push slightly for the touch to register.
Finally.. when touching the keyboard very slowly... the button does not register no matter how hard you press. weird!
Have any one noticed this issue?
cvbcbcmv said:
This simply scientifically doesn't make sense. If the nexus was a resistive touchscreen you would have to push hard, but, it's not. On a capacitive touchscreen it picks up the electrons in your finger, so, the lightest touch registers. It is impossible that pushing harder works better, that's not how the screen works. This is the case on the GPS in your car, not on your phone. It's probably your messed up brain ha ha jk
Click to expand...
Click to collapse
I know what I'm talking about!!. what I meant is: you need a larger surface area of your finger to touch the screen for it to register the touch.
there is a significant sensitivity difference between the GN & the nexus s
Here is a quick video demonstrating that slow touches does not register:
http://youtu.be/3a8rMJvI7zs
Personally, my nexus allows me to barely touch the screen to register. BUT, in past experience with capacitive screens, when my fingers were particularly dry the screen wouldn't register unless I put more finger surface down. I do a lot of wood working and all the saw dust really sucks the moisture out. Now, whether its the lack of moisture, or the capacitance between my dry static-y finger and the screen surface making mini lightening bolts, I don't know, but there was a big difference
Sent from my Galaxy Nexus Bugless Beast 4.0.3 lte +franco#5
This could be due to the fact your not holding the phone in your hand while interacting with the touchscreen, on nexus ones the touch screen/capactive buttons didn't work too well when the phone was placed on a desk and interacted with.
Sent from my MZ604 using xda premium
I have seen the same issue as the op, it is especially noticeable on the system soft keys where they require more finger surface area before they register the touch. The worst offender is the three dot menu key in the soft key area.
Hope they tweak the screen sensitivity a bit.
Sent from my Galaxy Nexus using Tapatalk
It also happens when I'm holding the device in my hand. I noticed that the lower screen is less sensitive than the upper part.
me too can confirm this issue.... it's like in the posted video:
trying to touch the screen on the Gnex sooooo slowly/lightly some times the screen don't take the input
you can verify in dev setting on the option that show you touch screen coordinate when you touch.... on the bottom of the screen you can see 'PRS' value (pression): try to touch so light you can the screen, you will never see number lower than 0,26/0,27 values.... now, if you can, try out on nexus s on other phone you have... you will see a very lower number. Lower is the number, better is the touchscreen sensibility.
and..... i know the difference beetwin capacitive and resistive touch..... soo, why can appen this issue to a capacitive one!?!?
p.s. i think this could be a software/driver isseu..... then could bee adjusted by a dev
there is app usefull for this problem, but only for Gnote/Gtab and transformer:
https://play.google.com/store/apps/...251bGwsMSwxLDEsImNvbS52aXRhbC50c3QubjcwMDAiXQ..
i think some dev can look into this and make one app for galaxy nexus too
can i make....?
Up! XD
To add to this. Overall theGnex touch screen is excellent. The driver seems to be configured to reject touches that are under a certain level of "distinction". If you slowly touch the screen and slowly spread the area of your finger skin over the screen, the touch is rejected. Generally it has stopped some inadvertant brushes, however if using the phone in bed holding it with one hand, it can be hard to use the touch since it can be hard in certain positions to be a bit "snappy" with your touch. It definitely seems intended.
yes.... thanks for the reply
i hope some dev can look into the driver and increase a little bit the screen sensibility.... as you had spoke, on the bed it's harder use the softkey.... and when i put my gnex in cardock it's the same....
you can try this app too it can change the sensitivity, minimum motion and duration to register touch. i have it installed and it does make the touchscreen quicker and more accurate for me. Need root for this one.
https://play.google.com/store/apps/...Nob3A0YXBwcy50b3VjaHNjcmVlbmJvb3N0ZXIuY29tIl0.
neotekz said:
you can try this app too it can change the sensitivity, minimum motion and duration to register touch. i have it installed and it does make the touchscreen quicker and more accurate for me. Need root for this one.
https://play.google.com/store/apps/...Nob3A0YXBwcy50b3VjaHNjcmVlbmJvb3N0ZXIuY29tIl0.
Click to expand...
Click to collapse
it seems only for samsung galaxy S....
yes but it's reported to work for the galaxy nexus as well. im using it with my nexus.
I posted this in franco's thread but it didn't receive a response.
http://forum.xda-developers.com/show....php?t=1559015
It seems you can edit the touch screen driver in the kernel for the Galaxy S2 and improve the sensitivity.
It has to be some sort of setting to ignore slow touches.
We have to find the equivalent driver code for the nexus. But definitely interested in this, looks like the solution we need.
Noticed this on my Galaxy Nexus as well. Thanks for the confirmation
did anyone find a solution to this problem? I tried the SGS Screen Booster app and i still can't get some touches to register. (i.e., the App doesn't seem to make a difference)
R: [Q] Screen sensitivity Issues??!!
Yeah i can confirm this!
My Nexus is D1 production (jan 2013) and i noted that in general bottom part is less sensitive than upper part!! Quite obvious in the corners and the nav bar. It is not linked to accidentally hit buttons, because you can try to rotate and that part will always be less sensitive.
Even in the upper part, my s2 is far more sensitive than this!
I hope it can be tweaked via software, but I smell crappy hardware here (Samsung Samsung....) because I already returned two devices.
Now that i know someone else noted it, I feel less crazy
Sent from my Galaxy Nexus using xda app-developers app

[Q] G2 Touchscreen problem

Hi. I just bought the G2 over the internet and I observed what I deem to be a touch issue. I first noticed the problem while using the on-screen keyboard, where an entire column of keys won't respond to touches, though when I go on landscape mode, they do. I tested the screen using doodle applications and found that a part of the screen stretching from top to bottom doesn't respond to touches [see photo embedded].
Are there any hotfixes/troubleshooting tips that I could do? Or is it really a hardware problem (e.g. broken digitizer) which requires repair/replacement? Having the phone returned means a grueling process of shipping and waiting, so I'd like to find out first if there's anything I could do from my end. Thanks!
I think that this is an hardware problem, I have this with my Xperia X1 too, but not so much
Sent from my chair.
probably need a new digitizer, about $20 from ebay, about 30min of your time. i had one that you could draw a line horizontally across the screen exactly halfway and the top wouldnt work but the bottom would. in landscape or portrait. new digitizer fix it

Touch screen sensitivity..do i have possibly have a problem?

it started out a few days ago. I started to feel like my touchscreen is not as responsive as usual.
I noticed numerous times it felt like my swipes as well as my touch (say when i want to open a specific app) are not being registered properly. Now the way i recall my samsung galaxy s, it would register a click sometimes even when you're hovering about 0.5mm to 1mm above it. So with that in mind, i thought i would try to do that with my one x. I would hover my hand slightly above it, and no response - NOTE: THIS IS NOT THE PROBLEM JUST YET.
Anyways, seeing as hovering over it doesn't work (which is not a problem imo) i would proceed to touching the screen, however i touch it without applying any pressure, i could even swipe and it WOULD NOT switch over to the next screen. I could touch the screen and the application would NOT register my fingers. However, after applying more pressure it suddenly gets registered. Even though the pressure i have to apply is just slight, Isn't this how a resistive touchscreen is supposed to behave and not a captivate touchscreen?
I thought that's because of my screen protector, i took it off and gave it 2~3 days and the issue remained.
Now my question(maybe even a favor) to you guys is as follows.
1. Try to click on an app, however, do this without applying any pressure, simply touching your touchscreen (might have to do this slowly). Does it respond? Or is it the same with with you as it is with me?
2. Please report in on the behavior of your touchscreen.
NOTE: I just want to know if my touchscreen is behaving normally or not. I do recall a better experience, actually if anything i was very happy with my one x's screen and this is simply annoying. Espeically when i have it on a soft surface and i push my screen, normally a soft surface tends to bulge in upon pressure.
It could take three touches for that freaking thing to register it if my phone is lying on a pullover or whatever else that's soft. Lately i'm not really happy with how webpages scroll up or down either, feels as if my swipes are lightly registered thus a sluggish movement upward or downward.. I hope this is not yet another issue that i have to deal with because my unit already had a wifi defect and, despite being happy with this device it might be my last. It's just too troublesome. Unless my stupid provider replaces it but i could keep dreaming.
shadehh said:
... Now the way i recall my samsung galaxy s, it would register a click sometimes even when you're hovering about 0.5mm to 1mm above it.
1. Try to click on an app, however, do this without applying any pressure, simply touching your touchscreen (might have to do this slowly). Does it respond? Or is it the same with with you as it is with me?
2. Please report in on the behavior of your touchscreen.
Click to expand...
Click to collapse
0,5 - 1mm ? do you even realize how big this distance is? No way the SGS would register that... or react on that. (I come from that phone too)
with that in mind, my One X is much more responsive as the SGS or any other phone I had.
And no, I do not need to press. As the slightest pressure gives my screen ripples. not possible.
Either try another kernel if you have some custom one, I know there was some problems with those sometimes. Or factory reset if you are stock and then return it?
PAGOT said:
0,5 - 1mm ? do you even realize how big this distance is? No way the SGS would register that... or react on that. (I come from that phone too)
with that in mind, my One X is much more responsive as the SGS or any other phone I had.
And no, I do not need to press. As the slightest pressure gives my screen ripples. not possible.
Either try another kernel if you have some custom one, I know there was some problems with those sometimes. Or factory reset if you are stock and then return it?
Click to expand...
Click to collapse
Well maybe i exaggerated the hovering part but within a certain (very small distance, probably 0,2 maybe even 0,1 the screen would react).
I've been from viper, to jelly bean roms, to ARHD and Maximus. Same thing.
edit: actually, 0,5 mm is hardly anything if you look at how big a mm is and put and reduce the distance by 50%, anyway that's not the discussion http://www.meb.uni-bonn.de/Cancernet/Media/CDR0000578121.jpg
Hover taps/clicks happen, I'm sure I haven't touched the screen a couple of times but it responded to what I wanted to do. Anyways, try this app called touchscreen test to confirm your issue.
death__machine said:
Hover taps/clicks happen, I'm sure I haven't touched the screen a couple of times but it responded to what I wanted to do. Anyways, try this app called touchscreen test to confirm your issue.
Click to expand...
Click to collapse
So you are implying that hovering touch seems to work on your Hox?
Hovering also works with my HOX. And I don't have to use any pressure, hardly even touch the screen.
Sent from my HTC One X using xda app-developers app
Same here. Hardly touching screen and still responds. I'm running stock 1.29.
Sent from my HTC One X using xda app-developers app
..mhm well how should I go on about this? I mean the people at the shop are not the brightest.. I gotta send it in though. It is annoying
Sent from my HTC One X using xda app-developers app
Tell them the digitizer is faulty and needs to be changed.

Soft keys leaves a some kind of "mark"

When i tilt my phone left the soft keys moves to the other side of the screen, but i still can see a line of where the keys were and the icons. It barely noticable but still noticable even more when brightness is lower. Am i the one with this problem? Any way to fix this?
Sent from my Galaxy Nexus using Tapatalk 2
Its normal for super amoled screens. Try this app to correct it. https://play.google.com/store/apps/details?id=com.bengigi.screen.diagnostic
Sent from my Galaxy Nexus using Tapatalk 2
quite normal with sumsung amold lcd,have same problem on my screen. no worry.
I have heard so many people complain about screen burn in on the Gnex, but mine has never seemed to burn in. Maybe I just use it less than some people? But yeah this apparently a pretty common problem where certain pixels get too worn out. I don't think there's any way to fix it aside from getting a new display (I really don't think an app can fix screen burn in, but I guess you can try).
Sorry, and I hope it doesn't get too annoying!

Touch screen issues

Hi
Just wondering what to do about my nexus 7, every so often the touch screen becomes unresponsive and/or registers touches incorrectly, turning the screen off and on solves it temporarily.
Is there a simple fix or do I need to replace the digitizer/screen.
Thanks
Matt
Sent from my A0001 using Tapatalk
Touch Screen Issues
I had problems with my screen becoming unresponsive at various times. I found the below thread and followed the directions as posted. I even put some tape over the connections and I have not had anymore problems. Your problem may be entirely different, but it's worth a try.
http://forum.xda-developers.com/showthread.php?t=2535835
yeah I had real bad issues with the screen responsiveness, I taped the digitizer cable and added an extra padding on top of the connection point because the original padding was flat and had moved out of position. Since then it's been worn ng great.
Sent from my Nexus 6P using Tapatalk

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