Inaccurate touch input on Replaced display - General Questions and Answers

I use a rooted Redmi Note 3 but I really don't think this has a device specific resolution hence posting here. So I broke my display and replaced it from a local shop. (no option for replacement) The problem with the new one is that no matter where I touch on the screen it will be registered on a spot directly below it. For example if you have a QWERTY style keyboard, touching on Q will input an A. This is especially annoying while typing and browsing the internet(clicking the wrong link) . Is there an app or a command that enables me to correct this. Maybe by having the screen move a little without affecting the touch layer. I have a few millimeters hidden under the visible display not sure if it is related. Have corrected it with a screen resizer app but touch issue persists.

Related

[Q] Phantom hovering "taps" with video

I've noticed something strange. I suspect it is a software issue but I'd like to know if anyone else experiences it. When I make the s-pen approach the screen, the moment the tablet displays the gray "hovering" dot, it sometimes also makes a phantom tap.
Here is a video showing the problem: https://dl.dropboxusercontent.com/u/21246716/2013-04-28 00.27.41.mp4
In the video I'm hovering the pen in the app "Papyrus" with the eraser selected. Notice that no phantom taps are occurring if I move the pen even closer. It's "Pen too far away to register" ---"phantom taps" ---"Normal hovering" ---"real tap"
I'm using Android Revolution HD 6.0 on a n8010, with no special kernel.
Anyone else? I thought the pen could only "tap" when something touched the tip.
EDITED: Added video and removed the erroneous conclusion that it was only GUI related.
After a bit more experimentation, I now see it is not gui specific. The touch is just so slight I couldn't see the resulting little lines. The strange behavior has the following characteristics:
It only happens in some areas, mostly I notice it in the corners.
It only happens when the tablet first detects the spen. When you move the pen even closer, no phantoms taps will register. This is what makes me think it is software related. I could be wrong.

[Q] Touchscreen lag

Hi everyone ! I'm posting this here as well as in the SP forum because I think this kind of problem isn't limited to one model or brand.
Story:
I recently got my Xperia SP's digitizer changed (apparently most phones don't like faceplants ) and when i got it back I noticed a "slight" change.
Symptom :
When I touch the screen and slide my finger there's a little lag before the move is recorded by the phone, like, I have to move my finger more than 1/2 inch away from the starting point or it consider my finger didn't move from it. (thus resulting in little jumps when sliding through menus or if you wanna draw a circle it start by drawing a straight line ) After the phone catches up however (so, as long as I keep my finger on it) it follow up well just like it has to. It's not related to the latency of the screen (as I said, after the first move and for as long as I keep my finger on the screen there's no problem) so even if it's after a hardware modification I believe it's a software related problem.
Resolution tested :
Through research I think my problem could come from a change between the dpi of the stock digitizer and the one I got in replacement, so the stock touch_slop value isn't adapted anymore. I tried to change it in my build.prop, but it mades no difference and the problem is still here. Although it doesn't mean the problem doesn't come from that (The way Android handles touch_slop has changed in the latest versions) I don't know how to fix it and I need advices. Has someone already encountered that problem ? How can I fix it ?
So, long story short : I need a way to tweak the dpi value of the digitizer that's stored somewhere on the phone.

Touch screen sensitivity

Hello. I have an Nvidia Shield tablet k1 on lollipop 5.1.1. Everything is great about this tablet except the touch screen. It is really sensitive. Also, when I am scrolling, it "jumps" and goes faster than I actually scrolled. It scrolls faster than it should. I found this thread on xda. It helped a little with the being too sensitive issue, but scrolling is still really weird. This is my second device since the first one's micro sd card was defective. They both are like this. Is there anything I can do, or do I just have to deal with it?
http://forum.xda-developers.com/shield-tablet/general/adjust-touchscreen-sensitivity-t2963326
I was opening a thread with this exact same issue. I'm not on stock though (using the latest CM12 nightly), so I don't seem to have the 'Sensor Calibration' option.
Also the touchscreen seems to register a touch even when the finger is not touching the screen.
On the other hand, if I scroll a very small distance (like 0.5 centimetres) the list I'm scrolling doesn't move at all. This doesn't happen on other devices such as my Nexus 5 and Nexus 7 and is very annoying in some cases (some games, or moving the cursor for keyboard input).
I'll try to record a video of this behaviour.
What can we do to fix this?
Update: found a video (not mine) showing the issue I'm talking about: https://www.youtube.com/watch?v=08uPtusOJHQ
anyone else with this issue?
I also have this issue on/off sporadically on stock rom.
I'll be scrolling and itll jump back the opposite direction
Its like it looses track of the touch then catches it again.
It's irritating as my S5, Nexus 2012 have no problems scrolling smoothly.
I don't recall the original shield i tested in store to have this issue either.
Currently having amazon ship me a replacement to see if its just limited to the one I received. (QA issues)
Calibrating screen might fix the issues: go to About in settings and tap on model number until the calibration screen comes up. then hit calibrate. don't touch the screen then when it asks to reboot, reboot.
variance said:
Calibrating screen might fix the issues: go to About in settings and tap on model number until the calibration screen comes up. then hit calibrate. don't touch the screen then when it asks to reboot, reboot.
Click to expand...
Click to collapse
Did it fix the issue I posted the video about? I'm on Cyanogenmod now so I don't have the option to calibrate the screen, but I would consider going back to stock if it fixed this issue...
Calibration doesnt help at all , same issue at brand new k1. Nvidia says thats normal functionality lol
Yeah, very normal for a gaming tablet which would require precision...
Not trying to take up for this thing but I haven't had the first touch screen issue with it . so maybe not all is affected?? I've tried to replicate the issue but just can't everywhere I touch and slide is smooth
You mean it doesn't "jump" like the OP said? I don't seem to have that issue either.
I'm more concerned about the touchscreen's precision, as shown in the video.

Do you have touch problems?

Recently I bought the motorola one vision that by the way I left it today in the warranty and on Saturday they will give me a new one, I changed it because I was having problems with the tactile sensitivity.
I come from a xiaomi mi a2 and I am used to writing very fast, in the motorola one vision when writing fast or normal sometimes certain letters when touching them did nothing like they do not recognize the touch.
This happens to me with a tempered glass screen protector or without it and when charging this is worse, and also if for example I put the phone on a surface the sensitivity drops to the maximum.
If you google it you will see a lot of reports of this issue in lenovo forums
do you have this touch issue too?
Yes, I have problems with the touchscreen sensitivity, because of this I removed the protective screen of the display which did not stick well because of the curvature of the screen. Now I use the phone without a foil screen protector and the touch is better . I read in this forum there are more people complained this matter . Also I can tell this is not Gorilla glas this is some glass equivalent to Gorilla glass 3 .
90% have this problem , is hardware issue . A10 solved it a little but still have it
I have this problem and it drives me crazy. I am still stuck on A9 so hoping A10 does indeed improve it a little. The worst is when the phone is sitting flat on my desk - it is almost impossible to use.
No touch issues here. XT1970-3 with tempered glass. Don't know about in games as I don't play.
I also had problems using the device with film, I researched a lot on the Internet about it and it seems to be a problem with the device. But with two simple configurations I managed to get around the problem and the device is very usable at the moment. 1 - Go to settings - System - Languages ​​and input - click advanced - find the option Pointer speed - Slide the bar all the way to the right and click Ok. Restart the device. 2 - Open again Settings - Sound - Scroll the screen down - Click on advanced - Find the option "Vibrate when touching the screen" and disable it.
I hope I helped, with these two settings I managed to get around the problem on my device. It still has some gagging but the touch response is much better.
Sorry my bad english.
yippee ki yay said:
I also had problems using the device with film, I researched a lot on the Internet about it and it seems to be a problem with the device. But with two simple configurations I managed to get around the problem and the device is very usable at the moment. 1 - Go to settings - System - Languages ​​and input - click advanced - find the option Pointer speed - Slide the bar all the way to the right and click Ok. Restart the device. 2 - Open again Settings - Sound - Scroll the screen down - Click on advanced - Find the option "Vibrate when touching the screen" and disable it.
I hope I helped, with these two settings I managed to get around the problem on my device. It still has some gagging but the touch response is much better.
Sorry my bad english.
Click to expand...
Click to collapse
This is not a quite well solution because increasing sensitivity of touches from settings will cause false-positive clicks, touches , whatever which are undesirable in a daily use of phone .
muppetz said:
This is not a quite well solution because increasing sensitivity of touches from settings will cause false-positive clicks, touches , whatever which are undesirable in a daily use of phone .
Click to expand...
Click to collapse
I made this configuration on my device and had no problem with false positives. And with the update to Android 10 the touch has improved more. I noticed that by activating the "vibrate when touching the screen" setting again, the device again fails to touch when typing.
yippee ki yay said:
I made this configuration on my device and had no problem with false positives. And with the update to Android 10 the touch has improved more. I noticed that by activating the "vibrate when touching the screen" setting again, the device again fails to touch when typing.
Click to expand...
Click to collapse
I'm sure you're right about this but I'm sure you have a screen protector . I don't . So in my case your solution isn't quite well .
Help us to find a solution
Hello, I have the same problem but I found something that help...
My problem increase when is on a surface, but if you plug only the cable type C the problem is fix...
If you do it, just plug the cable to the phone and the other part leave it alone
I think the port or something internal there isn't connected to ground... Maybe someone with better knowledge in electronics can help.
Test it and tell me if works you
Bought one for my wife and updated to Android 10. I can confirm the issue still exists touch sensitivity is not very accurate . It's ok could be better but not a deal breaker. Motorola should do something z then again all hardware is made by samsung..... This model it's not produced anymore , I wonder why....

What road to smaller screen / Apps?

Hi Guys,
Long time user of Sonys Compact phones here, so I'm custom to small screens and one hand operation of my phone, i HATE that I have to use two hands, and the manufactors thinks that we all loves big screens..
Ok so I bought a Google Pixel 4a, but for me thats also to big.
I have tried to set the display resolution via adb wm Size function, it works like a sharm, but the phone centeres the display, and google have for some reason removed the overscan function i version11, so I cant set the display to be on the bottom. "damn you google"
I have also tried the Quick cursor app, but its so slow to use all the time.
Then a thought, is there a way to force all apps only to be X pixels high, and fixed at the bottom of the screen? I dont want to ever reach over a certain point of my screen.
Or is there another way to solve my problem?
We are seeing our selfs as a smart race, but creates devices that needs two hands to operate?! jeezzee
PS. No root options wanted.
Kind regards
Morten
May be Android's Split Screen mode is a workaround.
BTW: On ChromeOS, Android apps can be presented in free‑form windows that are arbitrarily resizable

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