Touch screen responsiveness issue - LG Optimus Black

Hi there,
I'm having a problem with my touch screen. It works fine most of the time, except, when I tap the same area many times very quickly (like when I'm backspacing a whole message), that par of the touch screen eventually becomes unresponsive. It becomes responsive again once I turn the screen lock on and off again (the top button). I've read a few threads around with very similar problems (not on here I don't think).
I replaced the touch screen a week ago, but I've only noticed this today, so I'm not sure whether or not it's related.
I'm just running standard LG software and haven't put any third party stuff on there (apart from apps). I've done a full reset using the update utility, and using the hidden menu, but this did not fix the problem.
Here's some details about my phone:
Model: LG-P970
Android Version: 2.3.4
Kernel Version: 2.6.35
Build Number: GRJ22
Software Version: LG-P970-V20C
Please let me know if I should provide any more information. I'm just interested in knowing whether it's a problem with the touch screen, or the phone's software.
Also, I'm new to forums and what-not, so if I'm doing anything wrong, let me know!.
Ok, I've realised this is in the wrong category. Was bound to have done something wrong - won't happen again!
Thanks

Hi there,
Tell me please, does the same happen on the touch keys (menu, home, back, search)?
Also, do you have any screen protector applied?

I have said this few times in other posts..iIts a strange bug, like the touch being lost.
Its fixed easy by locking the phone, thus shutting down the screeen and touch sensor. After few seconds unlock the phone and check if it is solved, or do the process again.

Thanks
Hi Guys,
Thanks for the replies, sorry I've been away for a while.
It doesn't tend to happen on the home, back, etc, keys. It tends to happen mostly near where the backspace key on the keyboard is. It happens in other places, but it takes a lot more to trigger it to happen in the other places. (by trigger, I mean if you tap the same spot heaps when writing a message it starts to happen).
Also, yes, I've applied a screen protector. The screen protector got put on about 10 hours after the new screen, but I can't for the life of me remember whether or not it was doing it without the screen protector.
Yes, locking and unlocking the phone does fix the problem, but it's a bit of a pain doing this a few times when writing a long message.
I'd really like to know if anyone can tell me whether replacing the touchscreen will solve the problem, or if its to do with other hardware/software. I've since started using the CM roms and it's still an issue.
Cheers.

I have a touch-screen problem with my LG P970 (CM-10 stable)
Hi,
I have been using my lg p970 for more than 2 yrs however when I installed cm10 stable i my phone it works fine for some time then touch-screen does not response properly. When I touch in one corner response comes from other corner, especially while typing when I press one key 2-3 other keys are also pressed even though the keys which are press not even close to each other. I have install another keyboard from market this has reduce some misbehavior.
Please any one has a 100% solution to this problem please reply.
Thank You.

von Mandrake said:
Hi there,
Tell me please, does the same happen on the touch keys (menu, home, back, search)?
Also, do you have any screen protector applied?
Click to expand...
Click to collapse
Maybe this thread here:
http://forum.xda-developers.com/showthread.php?t=2516931
No solution yet, but lets gather the resources!

Another one
I'm with one of these P970h, the screen/digitalizer is cracked but works ok, I tried updating to CM10, the touch/soft buttons stopped working (they light up), also tried official 4.0.4, no luck, then the original 2.3 carrier modded, perfectly working! came back to 4.0.4, dont work anymore...
For me it is rom related...
for now I'm using NavBar with 4.0.4
Any ideas?

another one here..almost same with other members here,softkey not respon when in 4.0.4 and up ROM both stok official or custom,but working when back to 2.3.x down ROM and it not really responsive at all.try and pray for solution.

stubbornboy said:
another one here..almost same with other members here,softkey not respon when in 4.0.4 and up ROM both stok official or custom,but working when back to 2.3.x down ROM and it not really responsive at all.try and pray for solution.
Click to expand...
Click to collapse
My main reason for reverting back to 2.3.4. Usually occurred when receiving a call; I couldn't answer or reboot the phone. I had to pull the battery every time.
I'm not aware of any fix, save reverting back to a GB ROM.

androcraze said:
My main reason for reverting back to 2.3.4. Usually occurred when receiving a call; I couldn't answer or reboot the phone. I had to pull the battery every time.
I'm not aware of any fix, save reverting back to a GB ROM.
Click to expand...
Click to collapse
i think its hardware issue,,if i press and hold a little while on upper screen (right beside lg logo) touch screen became normal again. but sometimes need to hold on there when touch not work again. a member on this forum call it a flex issue of the touchscreen.
anyone know how much cost to replace it with new flex to fix this issue?

stubbornboy said:
i think its hardware issue,,if i press and hold a little while on upper screen (right beside lg logo) touch screen became normal again. but sometimes need to hold on there when touch not work again. a member on this forum call it a flex issue of the touchscreen.
anyone know how much cost to replace it with new flex to fix this issue?
Click to expand...
Click to collapse
If it works with 2.3.4 and not other versions, it's a ROM issue. Changing the screens probably won't help.
This loss of touch was reported by many users, and it's always a 4.0.4+ problem. Something software-wise is crashing, or there's a driver bug.

androcraze said:
If it works with 2.3.4 and not other versions, it's a ROM issue. Changing the screens probably won't help.
This loss of touch was reported by many users, and it's always a 4.0.4+ problem. Something software-wise is crashing, or there's a driver bug.
Click to expand...
Click to collapse
its also frezee not only touchkey but also screen sometimes but normal again when i hold that point,im on 2.3.4,but work only screen when in 4.0.4.
and it seem to be more responsive touchkey when i press and hold the upper screen that i say before better than i hold nothing (not so responsive).

See this... http://forum.xda-developers.com/show...php?p=53032940

Related

Nexus One Screen Accuracy Issues

Hi
I purchased my AT&T 3G compatible Nexus One the first day it went on sale, I just updated to Froyo and I notice that sometimes my screen fails to respond. I have to power on and off my screen for the issue to go away. Some examples are when im typing and I hit and key and it chooses another one or i'm trying to scroll on the menu and even if im picking something from the top the phone highlights the menu icon at the bottom. Are this issue just with my phone? has anybody been able to fix this?, If i call HTC support and they send me and new phone will it have the same issues?
Please guys let me know... this is driving me crazy
MEGABYTEPR said:
Hi
I purchased my AT&T 3G compatible Nexus One the first day it went on sale, I just updated to Froyo and I notice that sometimes my screen fails to respond. I have to power on and off my screen for the issue to go away. Some examples are when im typing and I hit and key and it chooses another one or i'm trying to scroll on the menu and even if im picking something from the top the phone highlights the menu icon at the bottom. Are this issue just with my phone? has anybody been able to fix this?, If i call HTC support and they send me and new phone will it have the same issues?
Please guys let me know... this is driving me crazy
Click to expand...
Click to collapse
the screen on this phone blows... plain and simple... you will just have to get used to it...
do you think i should get rid of it?
Hi,
Don't get rid of the phone. You don't have to reboot, just lock the screen by pressing the power button, then unlock it. I've had it a couple of times but it goes away when I do that.
Also, be aware that it's very sensitive to any part of your hand that might be leaning over the edge of the screen, or hovering over the touch buttons. For example if my finger is hovering over the home button but not touching it, and then I touch somewhere higher up on the screen, it may respond as if I had pressed menu.
cmstlist said:
Also, be aware that it's very sensitive to any part of your hand that might be leaning over the edge of the screen, or hovering over the touch buttons. For example if my finger is hovering over the home button but not touching it, and then I touch somewhere higher up on the screen, it may respond as if I had pressed menu.
Click to expand...
Click to collapse
So...are you saying we are holding the phone the wrong way? Lol.
the nexus has this issue with the screen. its not a big deal, just lock the screen and unlock it, it fixes the problem. its some kind of mis calibration issue. yeah it sucks, but not the end of the world. only takes 2 seconds to fix it.
joshlusignan said:
So...are you saying we are holding the phone the wrong way? Lol.
Click to expand...
Click to collapse
Heehee. I guess Android isn't immune to that either. Nor is the EVO or Droid Incredible (not identical problems but they're still there). I think it's inevitable that as we try and jam more and more "magic" into a single unit, things start to crosstalk in unpredictable ways and glitches emerge.
I have to say, the touch-sensitive buttons on Milestone & N1 really throw off people who haven't used them before. If I pull up a picture or video and I'm showing it to someone, inevitably they clutch the phone with a finger on a touch button, and then I have to get them back into the app and explain what not to touch. That's one reason I'd rather have physical buttons such as on the Desire.
I have this touchscreen problem as well, and yes its a big deal for me! I spent $580.00 for this phone. This shouldnt be happening at all! I've tried all sorts of troubleshooting(deleting cache partition, updating to the latest froyo, restoring factory settings, tried without installing 3rd party softwares, etc..) before i finally came to the realization that this is a hardware issue. Ive tried narrowing down to possibly when and how it occurs, but you can't. It just happens when it happens. It's impossible to predict. When this problem occurs, watch closely to where the calibration is off. During the problem, the calibration is only off on the bottom half of the screen, more so close to the bottom right. The top part will work perfectly. You can test this out by swiping left to right or vice versa on the homescreen. This problem will also affect the Pinch-to-Zoom in Browser, and the ability to type correctly using the default keyboard or 3rd party's like Swype. I received an exchange thru HTC a couple days ago, and not only was this exact touchscreen issue prevalent in this unit, but also it suffered from the purplish screen tint. This issue seems to have existed since they first launched this phone, but for some reason there has been no fix for it. It's funny that the EVO received a software fix promptly after the issue was reported by many. Why not the N1?? Because it's hardware, that's why! Feature wise, this phone is by far my best PDA, I mean I really love this phone, but $580.00 is too much for such an issue to exist. I'm hoping that there's only a number of bad batches floating around. I would say, if i receive 4 exchanges, all with the same exact issue, i may look into a class action. I definitely wouldn't want to be stuck with this problem after my year warranty is up!
I haven't had the 'crazy screen' thing since FRF85B, I assumed they'd fixed it.
I haven't had it since upgraded to Froyo too
not hardware problem
I encounter this problem a couple of times and I tested two things: useing trackball I ran touch sens app and tested the touch sensor, it was fine, second I killed all apps using a task man and it fixed the issue. I am on froyo.
Sent by my Nexus one.
I experienced this yesterday for the first time on FRF91 (unrooted Stock build). I couldn't press the "enter" button on stock keyboard. It just kept choosing Delete instead. Lock/unlock screen via power button sorted it.
So the problem is still there in latest build of FroYo (for me anyhow!)
Anyone else?
I've had this problem ever since I got my N1. Sometimes made me want to switch back to my iPhone! Makes it a lot harder for my son (2 1/2) to use the phone too.
Seems reports are mixed to whether froyo fixes it or not. But it gives me hope. I've been using CM5.0.8, holding out for their final release but this gives me a reason to try MCR.
I have upgraded to FroYo FRF91 but still see the same issue.
Sometimes I face with the calibration's flaw for the left bottom corner of the touch screen.
What a shame I have paid 750$ here for this phone. I really love it but this flaw screwed up all the pleasure.
cpm said:
I experienced this yesterday for the first time on FRF91 (unrooted Stock build). I couldn't press the "enter" button on stock keyboard. It just kept choosing Delete instead. Lock/unlock screen via power button sorted it.
So the problem is still there in latest build of FroYo (for me anyhow!)
Anyone else?
Click to expand...
Click to collapse
i have two n1, one has this problem occasionally, the other one never. Both run same kernel, rom and apps
A quick lock and unlock fixes the problem
watercool said:
i have two n1, one has this problem occasionally, the other one never. Both run same kernel, rom and apps
A quick lock and unlock fixes the problem
Click to expand...
Click to collapse
So it is a hardware issue? Maybe we can get htc to replace our phones.
Well looks like I still have this issue with frf91.
crimsondr said:
So it is a hardware issue? Maybe we can get htc to replace our phones.
Click to expand...
Click to collapse
i think no one really knows. Would be a strange hardware issue which can be fixed by locking and unlocking.

[Q] [Help] Touchscreen Becomes Unresponsive :/

Hey
I am currently running 2.1 on my Samsung Galaxy S the only thing ive done to it is root it, so its running the normal firmware and I'm waiting till the end of september ti get the official 2.2 before I look at flashing something custom onto it, anyway...
I have an odd problem with the phone where the touchscreen part of the phone will become unresponsive for no real reason, sometimes playing a game, sometimes just sending a text or browsing the market. My actuall hard buttons like the homescreen or volume control still work during this and the only way to make my phone un-freeze is to press my power button once to turn the screen blank, then press it again and slide to unlock the phone, then it works fine.
No clue how to fix this... anyone got any ideas?
Thanks in advance..
Sounds like hardware issue. Get it fixed
Thanks for the response (know it was a while ago)
I've had the phone 2 months now in a contract with T-Mobile UK through Carphone Warehouse... Does anyone know what my return rights are? Talking to them later just want to know where I stand when asking for a replacement.
Thanks
Sent from my GT-I9000 using XDA App
hello, i have same issue. Did you fix this problem?
Thanks
This comes really long after. But did anyone find out the reason for this?
I've got an Galaxy S that works fine most of the time. But from time to time the screen will become unresponsive. If I press power button to lock the screen and unlock it again, it goes away. So it seems that it is a software problem.
Another peculiarity is that the keys on the Samsung keyboard are very inaccurate to respond to touch from time to time. Sometimes it is just impossible to hit a letter in the mid row and pressing "s" can put "wz" on the screen.
I was thinking to just put CM on it anyway. But it will void the guarantee in case it is a hardware problem. So I want to make sure that it is software related.
Did anyone manage to fix this either by returning the phone or removing TouchWiz. I am not living in the same country as I bought the phone. So returning it for a checkup will take some effort.
For what ever it is worth
I took the phone to an unofficial service center that flashed the phone with a brand new Android 2.3.3 (the phone came with 2.3.5). A downgrade, which normally isn't a very good deal. But the dead areas on the screen are gone. The phone is much more responsive and the keyboard is not acting funny anymore.
So... if you are experiencing the same. Try getting rid of the TouchWiz before you start taking the phone apart.
Good luck!
I get it occasionally but I've grown to live with it, mine tends to be the kernel recently flashed devils for 4.0.3 but after fiddling with volts mine stops.
Sent from my GT-I9000 using xda premium

[Q] Galaxy Note Screen Keyboard Insensitivity Problems

I notice that this happens quite often where after typing a certain number of words these 3 keys become unresponsive and does not work sometimes i need a long hard press to get it to work rather than just touch. Other keys are just fine.
It's [p] [backspace arrow] and [enter]
Im using the swype keyboard. Is it a swype issue? I have not managed to test it without the swype but my phone has been like this ever since I bought it. I am a heavy user and no1 i know who uses the note has this issue.
Is anyone able to clarify? Is it a screen problem cause i'll go claim my warranty since the service centre is right round the corner if this is the case.
Feedback much appreciated. Thanks
Could this be a screen hardware defect in my unit?
unSpoke-n said:
I notice that this happens quite often where after typing a certain number of words these 3 keys become unresponsive and does not work sometimes i need a long hard press to get it to work rather than just touch. Other keys are just fine.
It's [p] [backspace arrow] and [enter]
Im using the swype keyboard. Is it a swype issue? I have not managed to test it without the swype but my phone has been like this ever since I bought it. I am a heavy user and no1 i know who uses the note has this issue.
Is anyone able to clarify? Is it a screen problem cause i'll go claim my warranty since the service centre is right round the corner if this is the case.
Feedback much appreciated. Thanks
Click to expand...
Click to collapse
unSpoke-n said:
Could this be a screen hardware defect in my unit?
Click to expand...
Click to collapse
Nope.. If you are in old firmware update to LA4. there was some touch sensitive issues in old Firmwares. but those are fixed in LA4 or LA6.
Thanks but mine isnt rooted. im on Gingerbread 2.3.6. baseband version N7000DXKL2
Are there any known issues with this stock version? I did a full screen test *#0*# and no problems with every category.
Another issue i notice is my SMS's keep getting resent upon reboot and i've uninstalled SMS Popup not sure if it has been fixed will continue to monitor. As far as i have read via google search: there's no fix for this?
unSpoke-n said:
Thanks but mine isnt rooted. im on Gingerbread 2.3.6. baseband version N7000DXKL2
Are there any known issues with this stock version? I did a full screen test *#0*# and no problems with every category.
Another issue i notice is my SMS's keep getting resent upon reboot and i've uninstalled SMS Popup not sure if it has been fixed will continue to monitor. As far as i have read via google search: there's no fix for this?
Click to expand...
Click to collapse
There were few bugs are their in old ROMs so Samsung pushing all new LA4 & LA6 ROM to all regions. wait for it. and more over ICS coming to Note very soon. i guess all problems ll be solved.
The original mytouch 4g has the same issue unless you run stock software. Happened to me on 3 different phones, drove me nuts.
Sent from my Sensation using xda premium
Ah alright, that's much appreciated as it;s frustrating to make a typo and not be able to backspace to fix the spelling error lolz ~.~
Check your hand-set with the screen test.Dial *#0*# from dial pad. A screen will appear. select touch test and test your phone's screen. Do it when you are holding it in your hand and when your hand-set is kept on a hard surface. If there is sensitivity issue in any of the test get your handset replaced or change the kernel version to get rid of the issue.
outsyder said:
Check your hand-set with the screen test.Dial *#0*# from dial pad. A screen will appear. select touch test and test your phone's screen. Do it when you are holding it in your hand and when your hand-set is kept on a hard surface. If there is sensitivity issue in any of the test get your handset replaced or change the kernel version to get rid of the issue.
Click to expand...
Click to collapse
Oh god, another issue....
I thought its only me facing this problem rarely. But there are many others as well.
check out this http://forum.xda-developers.com/showthread.php?t=1500000&page=1
LA4 didnt solve d problem, hopefully ICS Will.....

Touchscreen unresponsive on lockscreen

So I had my L90 D405N repaired (whole motherboard was replaced) and I noticed something strange afterwards. The touchscreen seems to be unresponsive, but only when I try to unlock the device. It's especially noticeable if I set a pattern unlock. I can only draw the pattern successfully after like 10 or 20 tries. The touchscreen basically does not record the whole pattern consistently. This is not such a big problem when using a simple swipe to unlock method, though still occurs from time to time. I have installed the latest available software update (I'm now running V10d firmware), also had the touch firmware updated, but the issue persists. Strangely enough, none of the issues are noticeable past the lockscreen. Does anyone have any ideas as to what might be the problem and the solutions to it? Thanks in advance for any answers that might come.
linasj said:
So I had my L90 D405N repaired (whole motherboard was replaced) and I noticed something strange afterwards. The touchscreen seems to be unresponsive, but only when I try to unlock the device. It's especially noticeable if I set a pattern unlock. I can only draw the pattern successfully after like 10 or 20 tries. The touchscreen basically does not record the whole pattern consistently. This is not such a big problem when using a simple swipe to unlock method, though still occurs from time to time. I have installed the latest available software update (I'm now running V10d firmware), also had the touch firmware updated, but the issue persists. Strangely enough, none of the issues are noticeable past the lockscreen. Does anyone have any ideas as to what might be the problem and the solutions to it? Thanks in advance for any answers that might come.
Click to expand...
Click to collapse
Oh! Sounds like the issue of phantom touches I once had.
Tiny water particles caused random touches while swiping that broke my swipes too.
The issues persisted even past lockscreen for me.
I cleaned my screen and put on a screen guard.
I dunno if this will help you, but this is what helped me.
Turn on "show touches" in developer options.
You might see phantom touches here and there when you swipe
Thanks! Will try that right when I get back home. Sure hope it works. I'll report back with results.
EDIT: tried removing screen protector and cleaning the screen, but the issue was still there. Even did a factory reset, but the unresponsiveness didn't seem to go away. I'm beginning to think the digitizer is messed up. I'll probably take it to warranty tomorrow. Again. Unless, of course, anyone has any solutions.
Sent from my LG-D405N using XDA Free mobile app
I am also having the same problem after replacing motherboard...
I tried factory reset and fpashed kdz again...
Same problem..
I called lg service centre who replaced motherboard..
Said that touch should be replaced....
Seeing as the issue is probably the same as mine, your phone's screen (and digitizer as well) just has to be replaced. That should not cost anything, so just have patience. My phone is working fine after everything's been fixed.
Sent from my LG-D405N using XDA Free mobile app
i have an LG L90 D415, and i have same issue.
the touch is irresponsive only when unlock the screen, but when i do a call and hang up, the touch works fine, i dunno why is this. i dont know if is hardware, or software.
Run an app that tests the touchscreen and/or do a factory reset (backup first, you will lose all data). If the problem persists after a factory reset using the stock firmware then you have a hardware issue.
Sent from my LG-D410 using XDA Free mobile app
I have the same un responsivness.. now I cant even get into my phone bc its locked and it wont let me touch the code so what can I do to get in my phone... it did just update firmware also.. plz help I dont have money for a phone
My touchscreen does not responsive and i couldnt drag even after the initial screen unlock. I solved this problem as follow: dial this 3845#*410# (my model phone is 410, if you have 405, put 405 insted 410). After, go to HW DEVICE TEST --> TOUCH TEST --> TOUCH FIRMWARE UPGRADE --> OK. Wait a minutes e after reboot the phone. Try again if not work in the first time.
Enviado de meu LG-D410 usando Tapatalk
solved my problem
brunolcs said:
My touchscreen does not responsive and i couldnt drag even after the initial screen unlock. I solved this problem as follow: dial this 3845#*410# (my model phone is 410, if you have 405, put 405 insted 410). After, go to HW DEVICE TEST --> TOUCH TEST --> TOUCH FIRMWARE UPGRADE --> OK. Wait a minutes e after reboot the phone. Try again if not work in the first time.
Enviado de meu LG-D410 usando Tapatalk
Click to expand...
Click to collapse
dude that was perfect....
solved mine....
thanks again....
Great tip
This tip also solved my phone issue.
On a friends phone we had the same problem. At first the touch gesture on the lock screen needed a few attempts and after some time it was impossible to do the gesture and we were essentially locked out of the phone.
I'm not sure if this helps anyone else, but for this L90 (405) phone the following helped: I applied hot air (from a hair dryer) onto the device screen and while the hot air was hitting the screen I was able to do the unlock gesture on the lockscreen successfully. This was repeatable because I required it a second time as the device locked itself while I was doing some data backup. As a side note: The screen had a small crack at one edge.
Though after the lock screen various other places like scrolling through galleries, pinch-zoom and swipe-keyboard did not work reliable.
brunolcs said:
My touchscreen does not responsive and i couldnt drag even after the initial screen unlock. I solved this problem as follow: dial this 3845#*410# (my model phone is 410, if you have 405, put 405 insted 410). After, go to HW DEVICE TEST --> TOUCH TEST --> TOUCH FIRMWARE UPGRADE --> OK. Wait a minutes e after reboot the phone. Try again if not work in the first time.
Click to expand...
Click to collapse
After I was finally able to unlock the phone again, then this above TOUCH FIRMWARE UPGRADE from brunolcs also solved my problem (after a second try, and removing the battery in between).
PS: One thing that helped during the backup phase before the TOUCH FIRMWARE UPGRADE. I connected a bluetooth mouse and then I was able to scroll with the mouse at important places were I needed to do backups.
Turning to the community with the same issue after I've tried just about everything I could think of. The problems started after the original digitizer was shattered and replaced with a knock-off. My touch firmware is already on the latest 2.07 version, heating it with a hair drier does not alleviate the symptoms, I've already tried four different touchscreens from four different suppliers, with some claiming for their wares to be "original" (thou what that means exactly is not entirely clear as you may know!) and still touchscreen is unresponsive on lockscreen for the first ~5-7 seconds. Once past lockscreen, everything goes away. This YouTube video depicts exactly what I mean.
Any ideas? Can any of you still on the original phone firmware launch service tools (3845#*405#) > HW Device Test > Touch Test > Check Touch Panel and see what it reports for Raw Data? (Mine says "Channel Status: PASS" but "Raw Data: FAIL".)
Anyone?
Hey,
don't know if this is the same issue, but the phone of my mother (LG L90 - D405) can't be unlocked while doing a call. Started with calling the mailbox, we were not able to unlock the phone to delete the messages. Screen didn't react at all until phone call ends. As soon as the call was over, the screen reacts completely normal.
Now the problem exceeded to any call: screen does not react, ending call is only possible, if your talk partner ends it. Screen reacts normally, when no call is made.
Does anyone know a solution? Haven't tried the solution posted above, perhaps doing a factory reset will solve the issue?
Or time to switch to a new phone, as this one was heavy used...

(N9208) Tune touch sensitivity without rooting the phone?

Hello, I'm a junior member here, I learned a lot from XDA as I read many threads but only have posted a bit.
My Note5 has been showing touchscreen malfunctions for a while, nowadays I'm using the S-pen. The first time I realized I tried to wipe the cache, and it didn't work. I booted into safe mode but it didn't fix it. I realized it was a hardware related thing. Then I tried to remove the screen protector, it did work, but not much later it happened again. I cleaned my screen and it worked (and start malfunctioning again minutes later).
I concluded that the oil from my finger was the problem, but unlike any other phones I've had, the touch begins to malfunction just because of a very tiny amount of grease build up.
(for example, if there's a small build up on the 'A' key on the keyboard, whenever I touch other areas, the 'A' key will also recieve touch input.)
I think tuning the touch sensitivity will help. So I asked for help here.
Was my conclusion wrong or is there any solution that requires no rooting?
aydanjr said:
Hello, I'm a junior member here, I learned a lot from XDA as I read many threads but only have posted a bit.
My Note5 has been showing touchscreen malfunctions for a while, nowadays I'm using the S-pen. The first time I realized I tried to wipe the cache, and it didn't work. I booted into safe mode but it didn't fix it. I realized it was a hardware related thing. Then I tried to remove the screen protector, it did work, but not much later it happened again. I cleaned my screen and it worked (and start malfunctioning again minutes later).
I concluded that the oil from my finger was the problem, but unlike any other phones I've had, the touch begins to malfunction just because of a very tiny amount of grease build up.
(for example, if there's a small build up on the 'A' key on the keyboard, whenever I touch other areas, the 'A' key will also recieve touch input.)
I think tuning the touch sensitivity will help. So I asked for help here.
Was my conclusion wrong or is there any solution that requires no rooting?
Click to expand...
Click to collapse
Type *#2663# on your phone. And press "TOUCH KEY FW UPDATE".
iminer said:
Type *#2663# on your phone. And press "TOUCH KEY FW UPDATE".
Click to expand...
Click to collapse
Nice, it works! But may I know why did it happen? Perhaps I can prevent it in the future. What happened?
(Update) The screen malfunctioned again. I tried to update the touchscreen firmware again and nothing happened. I was thinking wether flashing a custom kernel and ROM would fix this or not, should I?
Replace the phone, could be the screen or the motherboard. Don't bother fixing it.
cachanilla86 said:
Replace the phone, could be the screen or the motherboard. Don't bother fixing it.
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The weird part is it does work perfectly sometimes but most other time, it doesn't. I'm going to do a factory reset tonight to see if it works or not, or to decide wether I should flash a new ROM or not.
In my place here, a nearby retail store is willing to buy my Note5 for around $130, pretty sad to know. I love the S-pen but can't afford the Note 9 nor the Note 8. Should I buy a Samsung tablet with an S-pen instead?(it's currently on 25% discount).
Update: Is it a coincidence if the touch is problematic during heavy task (e.g. multitasking, running demanding apps, or playing games) and working fine during standby or light tasks?

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