I've read a few boards on this issue on other forums, but I haven't seen it on xda yet (and none of the other boards have answers yet that I see)
So, when I've been using my phone for a while (Gaming or web browsing mostly) and it builds up a little heat I get really sporadic touch screen behavior. At first I just passed it off as a software issue, but now I'm running Mahdi 4.4.2 and the issue still happens.
Basically the phone acts as if I'm tapping the screen really fast in the general area of where I actually intend to touch. This leads to browser zooming, page scrolling, involuntary input in games, and all kinds of other nonsense.
Anyway, I was just wondering if anyone has found the culprit and a way to fix this.
Also: I'm on my third one behind this issue
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Hi,
I've just updated to 4.4.2 and my screen is acting crazy, when I touch in one point the screen reacts in a bigger area somewhere else. For example it presses all three bottom buttons at the same time, while i aim totally different area ;/
Any one has/had the same issue ?
While I don't have the exact same issue as you, I do have some random ghost touches and gestures being"interrupted" so to speak. It's pretty annoying cleaning the screen up a bit and lock/unlock it kind of goes away temporarily only to return. I had this issue with stock 4.2.2 as well though. For whatever reason I don't exhibit the same issues on aosp based Roms. I know others have had issues with touch as well with varying degrees. Perhaps the touch screen driver in the stock kernels just don't like me. Lol. Sorry nothing that really helps but take it fwiw. Yours sounds pretty extreme. Did you have any issues with it prior to the update?
Sent from my LG-D800 using Tapatalk
I am not sure how many owners of the SM-G730A are mobile gamers at all, but maybe some of you have noticed this...
Since the update to Android KitKat 4.4.2 the touchscreen behaves erratically in certain games, primarily FPS shooters. I know it is not an issue with my particular device, goto Google Play and look up Dead Trigger 2. View the reviews for this device model only, you will see numerous complaints beginning after the date the OTA was released (8/27/14) complaining about the touchscreen controls.
I have downloaded the kernel source code from Samsung for both 4.2.2 and 4.4.2. Upon examining the kernel source, the Atmel touchscreen driver has been updated in 4.4.2. I believe this to be what is causing the problem. I am not sure if it is configured incorrectly or if it is just a poor driver. The Jelly Bean driver gave NO issues what so ever. I would revert back to 4.2.2 Jelly Bean if I could. I also compiled a kernel for KitKat which includes the Jelly Bean Atmel driver, however due to the locked bootloader, it does me no good.
What happens is this, you will have two fingers on the screen. Suddenly it is as though you lifted one, even if you are still touching the screen. Touches are erratic for a few seconds after this happens, then touch returns to normal temporarily until it happens again (usually only a few seconds later). This makes using the device for gaming extremely annoying, and difficult. This issue does not occur in normal use, only gaming, where there is rapidly changing multitouch inputs.
If any of you have noticed this, maybe you can contact Samsung/ATT complaining of the issue, if we're lucky maybe a patch will be released. Or it will be fixed in a future firmware update. I already wrote to both, ATT says they will forward the complaint to their management, Samsung has yet to reply.
http://www.samsung.com/us/support/contact / [email protected]
Also, this is a video I created demonstrating the problem. The video includes annotations describing the issue that can only be viewed from PC YouTube.
https://www.youtube.com/watch?v=3FMEPB51Y-4
Thanks for reading.
Has anybody with this device tried a multi-touch test? I'm starting to wonder if it's related to my screen protector. The issue only started after the KitKat update though, immediately after. I do a good amount of mobile gaming or I'd never have noticed it still to this day. Never presents itself outside of fps games.
Best way to check (within multi-touch test app):
Touch screen with two fingers.
Keep one stationary and rapidly slide the other around for a few seconds then stop and lift that finger only.
The stationary touch will act as though you lifted even though you didn't.
Sometimes touches will be erratic for a while if the test is repeated several times.
If anyone tries this please let me know if you have a screen protector or not and how it behaved. Thanks.
Nobody with this device on KitKat is willing to do a multitouch test for me?
All you have to do is turn the phone sideways so the app is in landscape mode, touch with two fingers, one on each side of the screen.
Keep one still, move the other rapidly for a little while then stop, but keep touching the screen.
Does the app show that you lifted the other finger even though you didn't?
I'd appreciate it, trying to narrow it down to a kernel driver issue, or screen protector issue.
https://play.google.com/store/apps/details?id=com.rn.yamtt
quakeaz said:
Nobody with this device on KitKat is willing to do a multitouch test for me?
All you have to do is turn the phone sideways so the app is in landscape mode, touch with two fingers, one on each side of the screen.
Keep one still, move the other rapidly for a little while then stop, but keep touching the screen.
Does the app show that you lifted the other finger even though you didn't?
I'd appreciate it, trying to narrow it down to a kernel driver issue, or screen protector issue.
https://play.google.com/store/apps/details?id=com.rn.yamtt
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Its the phone mine does these same. Might just be a cheap screen make
Deonta23 said:
Its the phone mine does these same. Might just be a cheap screen make
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Thanks for verifying. It's not the screen itself from what I can tell. I tried this on Jelly Bean with no issues. I did go through the kernel source for KitKat and believe it is the KitKat kernel touch driver. I am hoping for ATT/Samsung to release a kernel patch. The multitouch was perfect in JB.
I'm running stock android 7.1.1 on a Nexus 6p and there's a dramatic lag in scrolling response. When the screen is scrolling quickly and I put down my finger to stop the scroll there is a huge lag before the scrolling stops. About half a second or more. It seems to occur in all apps (and even system settings menus). I've had this problem since buying the phone a couple weeks ago. It's driving me nuts. I never have this problem with my iPad, MacBook or even my ancient nexus 4. The odd thing is that if instead of just putting down my finger I drag my finger slightly (in any direction) then the lag almost disappears, but obviously that's a very awkward thing to do, especially when none of my other devices require it. Does anybody else have this problem (and hopefully a solution)?
I've talked to Google customer support. They told me to clear the cache of every app (yes that does take quite a while) and to clear the partition cache. This did not resolve the problem and now they want me to do a factory reset, which apparently is the last step before hardware warrantee measures. I'd love to know if this is a common problem.
Al--g said:
I'm running stock android 7.1.1 on a Nexus 6p and there's a dramatic lag in scrolling response. When the screen is scrolling quickly and I put down my finger to stop the scroll there is a huge lag before the scrolling stops. About half a second or more. It seems to occur in all apps (and even system settings menus). I've had this problem since buying the phone a couple weeks ago. It's driving me nuts. I never have this problem with my iPad, MacBook or even my ancient nexus 4. The odd thing is that if instead of just putting down my finger I drag my finger slightly (in any direction) then the lag almost disappears, but obviously that's a very awkward thing to do, especially when none of my other devices require it. Does anybody else have this problem (and hopefully a solution)?
I've talked to Google customer support. They told me to clear the cache of every app (yes that does take quite a while) and to clear the partition cache. This did not resolve the problem and now they want me to do a factory reset, which apparently is the last step before hardware warrantee measures. I'd love to know if this is a common problem.
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Hi, I made some tests in your issue doesn't occur on my 6P with stock 7.1.1.
Sent from my interstellar 6P
same here
Al--g said:
I'm running stock android 7.1.1 on a Nexus 6p and there's a dramatic lag in scrolling response. When the screen is scrolling quickly and I put down my finger to stop the scroll there is a huge lag before the scrolling stops. About half a second or more. It seems to occur in all apps (and even system settings menus). I've had this problem since buying the phone a couple weeks ago. It's driving me nuts. I never have this problem with my iPad, MacBook or even my ancient nexus 4. The odd thing is that if instead of just putting down my finger I drag my finger slightly (in any direction) then the lag almost disappears, but obviously that's a very awkward thing to do, especially when none of my other devices require it. Does anybody else have this problem (and hopefully a solution)?
I've talked to Google customer support. They told me to clear the cache of every app (yes that does take quite a while) and to clear the partition cache. This did not resolve the problem and now they want me to do a factory reset, which apparently is the last step before hardware warrantee measures. I'd love to know if this is a common problem.
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You aren't the only person who has experienced this issue but I haven't had it happen. I don't know if anyone found a solution but if you do a search in this section you should find a thread very similar to yours with a lot of responses. I think some people experienced the issue after updating to 7.1.1
jhs39 said:
You aren't the only person who has experienced this issue but I haven't had it happen. I don't know if anyone found a solution but if you do a search in this section you should find a thread very similar to yours with a lot of responses. I think some people experienced the issue after updating to 7.1.1
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Thanks, I'll have a look. (Tried searching before but didn't find anything.)
For me the problem predates 7.1.1
I found the source of my scroll lag issue. I sometimes enable the magnification gesture in the accessibility settings (because I often use a particular transit app that has insanely small icons). I realized that when I have this setting turned on the scrolling gets laggy. Turning off the magnification gesture seems to solve the problem completely. Not sure if there's any workaround other than disabling the gesture setting.
I've read some reviewers complaining about this problem in some reviews of the Yotaphone 2 around the web, but couldn't find anything related in this forum, so...
Is anyone here having problems with the keyboard lagging while typing text? As if the device didn't have enough power to process the character hittings and ends up queuing and eventually missing some of them. I've been using the default Google Keyboard, but this problem is regardless of the keyboard application I use, and is just driving me crazy.
I'm still on Kitkat as it is my favorite Android, but it's so frustrating typing on this device I am really thinking of upgrading just to see this issue gone. Has anyone already experienced these lags? Can anyone confirm that this has been addressed on Lollipop?
The problem is RAM related. Chheck wich application use more RAM in your device and try uninstalling them.
Turns out it is not RAM or processor related, it is a touch sensitivity issue. Actually, according to people responding to the reviewers mentioned, it is not even an issue, but a feature, as it was apparently meant for glove usage (Russian smartphone, makes sense).
And I find it to be the case. If I take care to lift the finger enough from the screen between character hittings, the "problem" goes away.
So....looks like the solution is to tweak the screen sensitivity somehow, or to learn how to live with that once knowing what causes it.
Just to report some findings:
My device was running the RU 4.4.3 firmware when I was coming across this problem. Now with the EU 4.4.3 version, this overly sensitive touch is gone.
So this "glove mode" is definitely something from the russian firmwares.
I've just purchased a Tab S5e but appear to be having some issues with the touchscreen. I first noticed it when scrolling, occasionally the scrolling would stop and the device would click on anything that was under my finger. I also noticed this when playing a game where a finger needed to be held on the screen, it was sometimes appear to the game that my finger was removed.
I recorded a video of what i'm experiencing here: https://drive.google.com/file/d/1-33ixSpHRijjhb8g-MNLvbjMvuPRuGrQ. I did not remove my finger at all whilst drawing in white, but gaps appear.
I guess my question is has anyone else experienced this, or could this be a hardware fault? I thinking of returning this and waiting for the S6e or similar rumoured to be out soon.
Thanks all!
I'm experiencing touch screen problems where I sometimes need to tap the display 3 or 4 times before the screen will register the touch. I've only had mine for a few days but Im thinking about returning as well.
I was going through the threads for the first time to see if there were similar issues reported or tips to minimize the issue.
After switching from the Huawei Mate 20 Pro to the Samsung S10+ and from a Huawei tablet to this I have to say I'm seriously underwhelmed with Samsung.
jhs39 said:
I'm experiencing touch screen problems where I sometimes need to tap the display 3 or 4 times before the screen will register the touch. I've only had mine for a few days but Im thinking about returning as well.
I was going through the threads for the first time to see if there were similar issues reported or tips to minimize the issue.
After switching from the Huawei Mate 20 Pro to the Samsung S10+ and from a Huawei tablet to this I have to say I'm seriously underwhelmed with Samsung.
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Did you somehow solve the probelm?
k.bergmann2 said:
Did you somehow solve the probelm?
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Nope. The problem doesn't occur when playing games or using apps that test the display--but does with pretty much everything else. Some apps also have very pronounced jelly effect while scrolling including the Samsung Members App--scrolling through posts has so much jelly effect it makes me feel like I'm going blind.
Earlier Galaxy Tab devices had a calibration setting to adjust touch sensitivity but the type of panel used in the S5e apparently can't be user calibrated. Some people have claimed that the pointer speed setting is the same thing but touch sensitivity and response speed aren't the same thing and increasing that setting to the max didn't improve anything for me. If you want a faster response that's one thing but if the touch doesn't even register in the first place then there isn't anything to speed up.
The game optomizer service running in the background clearly ramps up the kernel when playing games to eliminate or minimize the touch issues and display test apps are treated like games and also get the extra performance boost--but with a locked bootloader I don't think there are any user options besides not purchasing Samsung in the first place.
Would a custom rom solve this?
k.bergmann2 said:
Would a custom rom solve this?
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I always check before buying a tablet to make sure there is developement of custom ROMs in XDA. And the first thing I do when I get one is to root and install one. Are there still "touch problems" with my ROM? Yes and no. I've noticed with this and other tablets that when the tablet first boots, there can be a lag in touch response. But I don't think it has anything to do with "touch sensitivity". I think the problem is that the OS is still "setting up" and just isn't ready to accept touches. (Try it on a Win 10 box. There is a terrific delay between the time the desktop screen first appears and the time it is ready.) This can also be true of apps. The screen can display before the app is ready for input. IMNSHO, I think some people just love to find reasons to knock "the vendor they love to hate".:crying:
Since I bought this tablet, I noticed that issue, the screen detects the touch, but it does not perform the action I want, open an app, select something,etc. I learned to live with it, but that is annoying !!, I installed a Custom ROM specifically [ROM] [UNOFFICIAL] [gts4lvwifi] [10] LineageOS 17.1 and I can confirm that the issue disappears, the problem for which I returned to STOCK, is the cut down quality of Amazon Prime Video, Netflix, because Widevine Level certification . and now in STOCK, I lost Samsung PASS, because it detects that I have the rooted device. fyi, my model is SM-t720.