Database Develop

[Q] Samsung galaxy Note-Right hand corner of the screen is unresponsive.

Hi all.I bought my galaxy note almost 2 months back.This is my first android phone.I have used iPhone 4 before buying this beast.I must say its awesome.However lately i have started experiencing a little problem.I have noticed that at times while typing my note's screen( Right hand corner) became unresponsive. I had to press the screen a lot of times to actually type a single letter( it was the GO button actually.) After struggling with it for 5-6 minutes it started working fine.After a few days i experienced the same problem again.I took my handset to the service center but the screen was working fine then.
I face this problem sometimes . i noticed that after locking the screen and then unlocking it solves the problem for that moment.Is this a software problem or hardware.
I wasn't able to convince the service person that my device has the problem.How can i make him convince and get the handset replaced.
Any help would be Highly appreciated. (The problem area is actually the place on screen where application icon is situated.)

Is the problem there only when you charge it? Because, there are known issues with many smartphones where that is the case. If it is, then I am right there with you, and trying different chargers I heard will alleviate the issue.

No the problem is not when i charge the device.I face this problem very rarely but not when charging.I would like to mention that the charger provided with the device was very slightly bend on the charging end as if it was forcefully inserted in some device.Though it charges the device without any problem.

Sorry, don't know what else to say. Good luck though.

I have had the problem with the bottom right corner becoming unresponsive to screen taps .This usually happens when the phone is not in my hand but is lying on a soft surface such as a pillow. However the minute I pick it up in my hands, the problem goes away. Strange. I had my note replaced under warranty, only to find the problem re occur on the replacement phone after a few days.
Sent from my GT-N7000 using XDA App

arshadaziz said:
I have had the problem with the bottom right corner becoming unresponsive to screen taps .This usually happens when the phone is not in my hand but is lying on a soft surface such as a pillow. However the minute I pick it up in my hands, the problem goes away. Strange. I had my note replaced under warranty, only to find the problem re occur on the replacement phone after a few days.
Sent from my GT-N7000 using XDA App
Click to expand...
Click to collapse
Any idea is this a software problem or hardware ?

arshadaziz said:
I have had the problem with the bottom right corner becoming unresponsive to screen taps .This usually happens when the phone is not in my hand but is lying on a soft surface such as a pillow. However the minute I pick it up in my hands, the problem goes away. Strange. I had my note replaced under warranty, only to find the problem re occur on the replacement phone after a few days.
Sent from my GT-N7000 using XDA App
Click to expand...
Click to collapse
I'm having the exact same problem and thinking of taking it back to the service point. However, could it be rom related?
I'm running LA4. GOing back to a backup of KK5 alleviates the problem.
Something else I've noticed is that when left on a surface the application
button rarely responds but as soon as I touch it on the sides it works and when Ialso plug the usb cable it also works flawlessly.

A friend of mine has the same issue, but it only occurs if the device is laying flat on a table which is odd, he plans to have yet another screen replacement but will probably wait a few months due to shoddy quality control.

I had this issue since the 1st day. It became worst during charging. Have tried every old and new rom with no luck. I though it was a screen issue where I even applied much pressure to the affected area hoping it would help but no luck.
But the issue went away after I flashed Abyss kernel 3.9 via cwm. Now the right bottom corner is as sensitive as the left bottom corner. You might wanna try a different kernel 1st before sending to the service center...

If I remember correctly one HTC phone had similar problem, screen was unresponsive when lying on table but as soon as u pick it up it worked fine. It had something to do with screen/digitizer not being grounded properly.
Sent from my GT-I9000 using Tapatalk

Moved To Q&A​
Please post all questions in the Q&A section​

Nazar78 said:
I had this issue since the 1st day. It became worst during charging. Have tried every old and new rom with no luck. I though it was a screen issue where I even applied much pressure to the affected area hoping it would help but no luck.
But the issue went away after I flashed Abyss kernel 3.9 via cwm. Now the right bottom corner is as sensitive as the left bottom corner. You might wanna try a different kernel 1st before sending to the service center...
Click to expand...
Click to collapse
I got my handset replaced last Saturday, but i am facing the same problem with the new handset.Are you sure that by changing the kernel the problem will be solved.If yes then how can i change the kernel of the handset ?

Interesting, this is theme #1,500,000.

outsyder said:
Any idea is this a software problem or hardware ?
Click to expand...
Click to collapse
Definitely a hardware problem because when I took it to Samsung service centre, the first thing they did was to flash the phone firmware. Only when the problem persisted, a replacement was given.
Sent from my GT-N7000 using XDA App

shot in the dark here, do you have a case on your note? I was going nuts on the first few days with my note using a flip style case only to find the damn magnet was causing the touch response issues. Took the case off and haven't seen the problem since.

After further testing it seems in my case at least it was definitely a kernel issue with cf-root kernel la4. Replaced it with a different one and problem solved.

Same problem here, put it down and bottom right corner doesn't respond, pick it up, responds instantly like rest of screen. I thought I had some kind of insecure Note that needed to be held or something. Last few days it was really freakin me out to the point I was purposely putting it down and then pressing and pressing and pressing the back button...nothing...pick it up...works with one slight touch, I was like WTF? What the hell could cause that???
Somewhat relieved to see I'm not the only one with a clingy Note. I'm going to wait and hope ICS fixes the issue, if not I'll guess I'll have to learn how to flash.

Right-hand corner of death
Thank goodness I'm not the only one in the world with this problem.
I first observed the problem when i upgraded to LA1. I was loving the improved battery life like a puppy until i noticed the bottom right part of the touch screen was as dead when placed on a flat surface. It started working again after I had picked it up, making me wonder if it had a "Hey I'm being hand held" feature, but it would still trip out when i'd type an SMS or email.
Called the Samsung service center to ask about it. they said they've never heard of such a problem and that I should just bring the phone in for software downgrading since my Note was ok till I upgraded it. For them, it was a firmware problem so replacing it was not on their priority list.
I ended up downgrading myself to KJ3 (using odin) which works fine. Unfortunately, i no longer enjoy the improved battery life or one-handed keyboard config.
No choice now but wait for ICS and hope it works flawlessly.

Skiddledank said:
Same problem here, put it down and bottom right corner doesn't respond, pick it up, responds instantly like rest of screen. I thought I had some kind of insecure Note that needed to be held or something. Last few days it was really freakin me out to the point I was purposely putting it down and then pressing and pressing and pressing the back button...nothing...pick it up...works with one slight touch, I was like WTF? What the hell could cause that???
Somewhat relieved to see I'm not the only one with a clingy Note. I'm going to wait and hope ICS fixes the issue, if not I'll guess I'll have to learn how to flash.
Click to expand...
Click to collapse
This is definitely a problem with screen. I got mine replaced an hour ago and did the LCD test. The new one is working perfectly fine (with and without flip case).
Try the LCD test . *#0*#.If the test fails get the hand set replaced.

outsyder said:
This is definitely a problem with screen. I got mine replaced an hour ago and did the LCD test. The new one is working perfectly fine (with and without flip case).
Try the LCD test . *#0*#.If the test fails get the hand set replaced.
Click to expand...
Click to collapse
Outsyder,
What software version are you using?
Tried the screen test and mine works flawlessly on KJ3. Since I'm from southeast Asia, I don't have any other updates available except for LA1 which is buggy on my Note.

[POOL] About the touchscreen problem

I only discovered the touchscreen issue yesterday doing the test of the other thread. So, i would like to every z1 owner to answer this pool to know how bad things are and if we can try to find a solution, since i think Sony won't.
So, please answer the poll and post any useful information. I'll start.
My phone model is C6943, I currently don't use case and I'm using a screen protection. I can do the xperia touchscreen test without touching the phone body without problem and also doesn't have problem with pattern password.

ffp. said:
I only discovered the touchscreen issue yesterday doing the test of the other thread. So, i would like to every z1 owner to answer this pool to know how bad things are and if we can try to find a solution, since i think Sony won't.
So, please answer the pool and post any useful information. I'll start.
My phone model is C6943, I currently don't use case and I'm using a screen protection. I can do the xperia touchscreen test without touching the phone body without problem and also doesn't have problem with pattern password.
Click to expand...
Click to collapse
Pool? I think you mean "poll"
My 6902 is completely screwed. At first I used a screen protector and the problem wasn't too bad. Then I removed it when I took the phone in to get another issue fixed and soon after that the problem got very bad. I was traveling so couldn't go back to the service center. Now it's a bit better, randomly works and randomly doesn't. When I was home in cold weather though it seemed a lot worse than it is now that I'm back in India where it's warm. Not sure if temperature is a factor, or could be conscience. But a few weeks ago it was so bad you couldn't type even a two letter word using Swype.
Also, I now have a part of my screen in the form of a horizontal line where touch doesn't work at all. No single touch and no drag. Completely dead. Taking it to the service center soon.

You should vote on the first option, then

Guys, check my post "News from whats is causing touch screen problem" to see if is your case!

ghostman2 said:
Guys, check my post "News from whats is causing touch screen problem" to see if is your case!
Click to expand...
Click to collapse
It's not.
I got problem unlocking with patterns, scrolling pages and when I play some games after few minutes it stop working so I voted the first option. My phone is back to Sony, I hope they know what to do and at last it's Made in China.

Please, post if you use case and screen protections too. This could help understanding the problem.

Additional data : Z1 is being handled in a leather case, back and screen protector removed ( not the one with the logo, the plastic ones that makes your camera blurry )
Touchscreen problem seen in the game Alien Shooter, after some playing, the touch screen becomes less and less responsive ( i tap a button to shoot and use some onscreen joystick to move ) - both become unresponsive/less responsive as you play and the phone gathers some heat ( you can feel the touchscreen becoming hotter )

i have a simple tpu case, i had a bit of problem when playing all touch-based games (not ones with gyro like asphalt).
ever since i got the case it's better, i have the ASF and nillkin matte screen protector

ffp. said:
Please, post if you use case and screen protections too. This could help understanding the problem.
Click to expand...
Click to collapse
I did not use any case just a chip screen protector. Anyway on a good healthy touch screen the screen protector should not influence the touch screen respond.

Hey guys, I have also this touchscreen issue, and I would appreciate if you give a feedback about warranty service, if sony accepted the problem and replaced a touchpanel or not, and also if the replaced touchscreen is better or not. I´m also thinking about sending it back for warranty repair.
I have also found that my phones touch screen is temperature sensitive, when it get cold or warm it just refuses to detect touch actions. Try it yourself put the phone into cold/hot water for 5 second, take it out, quickly clean the display from water and test the touchscreen. I first tought this behavior is normal and I didn´t cared until I started to play games. After 15minutes of playing the touchscreen bug every time appears. But also after a while its randomly disappears. So this thing is strange. (the bug appears identically also when I have my phone in a plastic case)

Vippo321 said:
Hey guys, I have also this touchscreen issue, and I would appreciate if you give a feedback about warranty service, if sony accepted the problem and replaced a touchpanel or not, and also if the replaced touchscreen is better or not. I´m also thinking about sending it back for warranty repair.
I have also found that my phones touch screen is temperature sensitive, when it get cold or warm it just refuses to detect touch actions. Try it yourself put the phone into cold/hot water for 5 second, take it out, quickly clean the display from water and test the touchscreen. I first tought this behavior is normal and I didn´t cared until I started to play games. After 15minutes of playing the touchscreen bug every time appears. But also after a while its randomly disappears. So this thing is strange. (the bug appears identically also when I have my phone in a plastic case)
Click to expand...
Click to collapse
For me the warranty worked perfectly, i changed the phone 3 times until get a working one, i called Sony, discribed my problem and they changed for me, only 2 days for the change. BUT i recorded the problem and sent to them, so they accept the change.

Vippo321 said:
Hey guys, I have also this touchscreen issue, and I would appreciate if you give a feedback about warranty service, if sony accepted the problem and replaced a touchpanel or not, and also if the replaced touchscreen is better or not. I´m also thinking about sending it back for warranty repair.
I have also found that my phones touch screen is temperature sensitive, when it get cold or warm it just refuses to detect touch actions. Try it yourself put the phone into cold/hot water for 5 second, take it out, quickly clean the display from water and test the touchscreen. I first tought this behavior is normal and I didn´t cared until I started to play games. After 15minutes of playing the touchscreen bug every time appears. But also after a while its randomly disappears. So this thing is strange. (the bug appears identically also when I have my phone in a plastic case)
Click to expand...
Click to collapse
Same here. I sent my phone back last week to the store where I bought it 2 months ago. They will send the phone to Sony Center but the time for repair or replace the device will not be 2 or 3 days but from 2 weeks to no eta. When the phone will come back to the store they will send the phone to me. I will post if the problem persist or not.

The problem is if they return a phone with the same problem.

ffp. said:
The problem is if they return a phone with the same problem.
Click to expand...
Click to collapse
They should be aware about this issue even on the new device so at this time they probably will check that but if they return a phone with the same problem, I will send it back again like many did. Someone had to replace the phone 3 times and I will do the same.

IYeah, you will be a long time without your phone though. I think I'll wait a bit since i rarely get the error and actually only when i try to reproduce it. How bad was yours?

ffp. said:
IYeah, you will be a long time without your phone though.
Click to expand...
Click to collapse
What I can do, I want a fully working Z1, I paid for it.
ffp. said:
I think I'll wait a bit since i rarely get the error and actually only when i try to reproduce it. How bad was yours?
Click to expand...
Click to collapse
I was able to reproduce the problem in many ways, Touch Screen Test, Opening the phone with Patterns, Scrolling Pages or with Launcher instead of switch the page it was opening the applications and at last when I was gaming at one point the touch stopped working and I had to wait, so this made my mind to send it back. On daily use was all ok but in some circumstances was frustrating.

i had the problem with cm11. and when I retored to stock then the problem was gone:S

I'm on stock and I got the problem.
Today for the first time I got the problem when writing on handrite. So I thought about using my phone warranty to get anotehr one. But it don't always fails when i do the method to reproduce it. So, how do you test if your new phone is working and how do you prove that it isn't? I mean what if i take the phone to warranty and it works?
And for you who already changed phone, it is working?

ffp said:
'm on stock and I got the problem.
Today for the first time I got the problem when writing on handrite. So I thought about using my phone warranty to get anotehr one. But it don't always fails when i do the method to reproduce it. So, how do you test if your new phone is working and how do you prove that it isn't? I mean what if i take the phone to warranty and it works?
And for you who already changed phone, it is working?
Click to expand...
Click to collapse
For me after the 3rd change is working now, here is what i did: i recorded the error and send it togheter with the phone. They saw the video and changed imediately.
Sent from my C6943 using xda app-developers app

Did youu made the method to reproduce and it didn't failed? For how long do you have the 3rd phone?

Touchscreen Issues

Hi Guys; I recently got my new 2nd Generation Moto G but after setting it up and using it for 20 minutes or so I noticed that sometimes while scrolling through settings, contacts and webpages, that when i am swiping over a horizontal band in the exact center of the screen, the sensitivity of that region of the screen becomes very unreliable and the phone will often interpret scrolling as a press. While scrolling in my phonebook it has a tendancy to call people, when browsing the web it has a tendancy to press links i never wanted it to, and this same behaviour is repeated regardless of what application i am in.
It certainly seems to be more frequent and prominent while I am charging the phone, regardless of the charge current. I have charged it from my pc, 1000ma wall adapter and 850ma wall adapter; all with the same results.
Sometimes turning the screen off and on again can rectify this, but its usualy back again in no time
I have tried factory resetting the phone, with the screen protector both on and off, while on charge and off charge and while making sure nothing else could be interfering with the touch screen i.e., a case.
I only got this phone from ebuyer in the UK 3 days ago, 2 days earlier than it was actually ment to come! so its a real shame im having these problems, I've already spoken to Motorola about it and they have advised me to RMA the phone as they cant give me a definitive answer as to wether or not this is a Hardware or Software issue.
Has anyone else been having issues similar to those that I have experienced with their own new Moto G devices

I would RMA, mine is fine.

my moto(2014) has the same touch screen issues while phone is on charging. unresponsivene & its very annyoing. hpns only whn ph is charging
Sent from my GT-P3100 using XDA Free mobile app

xDDen said:
my moto(2014) has the same touch screen issues while phone is on charging. unresponsivene & its very annyoing. hpns only whn ph is charging
Sent from my GT-P3100 using XDA Free mobile app
Click to expand...
Click to collapse
Are you using the official charger or some other one

Check u r charger or wall socket. its becoz of voltages issue.

ohh okk thnx guyz i was using samsung charger.
Sent from my GT-P3100 using XDA Free mobile app

Unfortunately my phone displays this behaviour both on and off the charger. It does however display the issue more frequently while on charge.
The chargers I'm using are all 5v which is typical of a phone charger. I have one at 850ma which charges painfully slow, I have another at 1000ma which charges much more quickly. And I use my Computers USB ports to charge at times, no matter how I charge the phone the problem remains.
Sometimes it will work fine for an hour or so then it will go insane on me. I have requested RMA with ebuyer. Had the phone only showed this issue on charge I may have been contempt with it, but the problem can happen anywhere, anytime and for a brand new phone that's not acceptable.
@ xDDen: have you tried charging the phone from any other source besides the Samsung charger you have?

yes now am charging with moto g's charger and it is working fine now without any issues
Sent from my GT-P3100 using XDA Free mobile app

Aileach XDA said:
Hi Guys; I recently got my new 2nd Generation Moto G but after setting it up and using it for 20 minutes or so I noticed that sometimes while scrolling through settings, contacts and webpages, that when i am swiping over a horizontal band in the exact center of the screen, the sensitivity of that region of the screen becomes very unreliable and the phone will often interpret scrolling as a press. While scrolling in my phonebook it has a tendancy to call people, when browsing the web it has a tendancy to press links i never wanted it to, and this same behaviour is repeated regardless of what application i am in.
It certainly seems to be more frequent and prominent while I am charging the phone, regardless of the charge current. I have charged it from my pc, 1000ma wall adapter and 850ma wall adapter; all with the same results.
Sometimes turning the screen off and on again can rectify this, but its usualy back again in no time
I have tried factory resetting the phone, with the screen protector both on and off, while on charge and off charge and while making sure nothing else could be interfering with the touch screen i.e., a case.
I only got this phone from ebuyer in the UK 3 days ago, 2 days earlier than it was actually ment to come! so its a real shame im having these problems, I've already spoken to Motorola about it and they have advised me to RMA the phone as they cant give me a definitive answer as to wether or not this is a Hardware or Software issue.
Has anyone else been having issues similar to those that I have experienced with their own new Moto G devices
Click to expand...
Click to collapse
Yea i have the same problem, what did u do.

mnishamk said:
Are you using the official charger or some other one
Click to expand...
Click to collapse
Mine actually didn't come with a charger. I was a bit surprised, but checking the Amazon page (for Germany, since I bought it here, though not from amazon) reveals that this seems correct/intentional. It did include the usual µUSB cable though (and it's not like I don't have enough USB chargers).
For completeness sake: I don't have the described problem, no matter if plugged in or not...

Touch issue
I'm using Moto G 2014 charger only and still facing issue bringing down notification panel.
Also i face issue when trying to unlock phone via pattern lock.
Flipkart offering me a replacement- Shall i go for it?

Been having a problem with the screen, mainly on the back soft button part of the screen, keep finger on it and it multi presses like a mad thing, doesn't happen all the time though, was driving me crazy. took off the Ultimate Shield screen protector and the problem went away, put the shield back on and the problem didn't come back, then couple of hours later (today) I got the ota update and the screen goes mad again, took shield off again and the problem continued, a few minutes later and it's all fine again. now (a few hours later) still all is fine.
Problem is I was all ready for doing a RMA to Amazon.co.uk for it, stuck on what to do now as if I send it back and they find no fault.

mtbgus said:
Been having a problem with the screen, mainly on the back soft button part of the screen, keep finger on it and it multi presses like a mad thing, doesn't happen all the time though, was driving me crazy. took off the Ultimate Shield screen protector and the problem went away, put the shield back on and the problem didn't come back, then couple of hours later (today) I got the ota update and the screen goes mad again, took shield off again and the problem continued, a few minutes later and it's all fine again. now (a few hours later) still all is fine.
Click to expand...
Click to collapse
Same issue here, but without any screen protector. OTA update hasn't changed anything. Sometimes it works and sometimes the screen recognizes double/triple taps where it should be only one...

mtbgus said:
Been having a problem with the screen, mainly on the back soft button part of the screen, keep finger on it and it multi presses like a mad thing, doesn't happen all the time though, was driving me crazy. took off the Ultimate Shield screen protector and the problem went away, put the shield back on and the problem didn't come back, then couple of hours later (today) I got the ota update and the screen goes mad again, took shield off again and the problem continued, a few minutes later and it's all fine again. now (a few hours later) still all is fine.
Problem is I was all ready for doing a RMA to Amazon.co.uk for it, stuck on what to do now as if I send it back and they find no fault.
Click to expand...
Click to collapse
Well the touch screen issues got way too much for me so I returned the phone to Amazon uk and got a refund, bought another moto g from Argos the same day I returned it and I'm glad I did, everything is ok with the new phone, no screen issues at all.

Moto G 2014 Tocuh Screen issues
Same issue here.
Bought phone 1 week ago from Argos. Initially fine, then suddenly cant use the swipe down notification bar.
Turned on the Show Touch indicator in Developer options and it clearly shows that the screen is registering the touches about 0.5cm down the screen from where I am touching. So you can never hit the notification bar when its doing that. I found that turning the screen off with the power button and then back on again usually clears the problem.
In the UK the phone only comes with a USB cable, so I use a variety of chargers.
I think mines going back as not functioning properly

I also having same issue you should post your emei. It might be I purchased defective from one of previous user having same issue. I'm at Singapore.
EMEI1: 359296054942769
EMEI2: 359296054942777
Android Version: 4.4.4
Based Version: MSM8626BP_1032.394.88.00R,EMEA_DSDS_CUST
Kernel Version: 3.4.42-g668a77b
[email protected] #1
Tue Aug 26 20:30:04 CDT 2014
System Version: 21.11.23.titan_retaildsds.retaildsdsall.en.03.reteu
Build Number: KXB21.85-23

DavidITunstall said:
Same issue here.
Bought phone 1 week ago from Argos. Initially fine, then suddenly cant use the swipe down notification bar.
Turned on the Show Touch indicator in Developer options and it clearly shows that the screen is registering the touches about 0.5cm down the screen from where I am touching. So you can never hit the notification bar when its doing that. I found that turning the screen off with the power button and then back on again usually clears the problem.
In the UK the phone only comes with a USB cable, so I use a variety of chargers.
I think mines going back as not functioning properly
Click to expand...
Click to collapse
I am currently having this problem

francescomulas said:
I am currently having this problem
Click to expand...
Click to collapse
Me too! I am very sorry to learn that it is a hardware problem.
I'm afraid to take it to the service center because the problem is intermittent and technicians could not detect it .
Any of you have solved?

If it was a hardware problem we could try asking a kind of compensation, I don't know, some free accessories, or maybe the change of the device...

Had a problem with mine, it would go mental pressing the back softkey, press it once and it would just keep doing it by itself, so a problem with lower left of the screen, sent it back to Amazon for refund and got another one from Argos, this one is mostly alright with the screen touches but will sometimes do a double press or think a press is a swipe anywhere on the screen, it's not been so bad that I kept it, but now other problems like the memory shortage making apps close is starting to really get to me, also the screen rotation get stuck in landscape now and then, even it sometimes goes to landscape by itself.
In the process of getting a different phone as this is starting to annoy too much.

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
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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.
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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...

Ghost touch on top edge

Hello. Since few weeks I have extreme problem with ghost touch issue on Just top of the screen where the notifications are. I've turned on the programist options in order to see where it happens.
It looks like multiple ghost touch on the top edge on hole width. Sometimes the area respond to my touch, but most of the Time does not.
Happens random, case or screen protector is not the problem, tried all the options.
I have found some solutions from pocophone, but neither of them works.
Disabling gestures, miui optimalization, screenshot gestures, non.
Tried factory reset, updating to miui 11, nothing improved. After factory reset no problem for 1 day, not sure if there is a correlation.
I Will try to record the problem when it Will happen again.
Do you have any advice? I have warranty but at this moment would like to try all avaible solutions. Thanks in advance.
EDIT
Here is my video how it looks
https://photos.app.goo.gl/qnSkPZ6UwYVqsYY88

ooooh man, finally someone with the same problem, and cant find why its happening
it happens randomly, but when its happening the only way i can stop it is tighting it as if choking it. i dont want to send it to warranty.....

Well I am going to send it to warranty next week. I dont like the fact that I Will he without the Phone for a month, but hope they Will change the screen and it Will be fine.
My first xiaomi, always had Samsung and everything was alright. Phone in overal is great but I am very disappointed with this issue.

mist813 said:
Well I am going to send it to warranty next week. I dont like the fact that I Will he without the Phone for a month, but hope they Will change the screen and it Will be fine.
My first xiaomi, always had Samsung and everything was alright. Phone in overal is great but I am very disappointed with this issue.
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Im the same, just noticed, after 2 days without issues that i was recording a telegram audio and it happend, idk its kinda clueless always

Man, definetly it has something to do with software, just a few moments before posting this i had the issue and it didnt want to leave so i had to restart the phone, first time this way.

Guys I found out what's causing the issue!!! It's not software or hardware. If you have the original Xiaomi case that comes with the phone it causes the ghost touches! I tried removing it 2 times and each time I put it on I experience the ghost touches and each time I remove it they stop for 1+ day which means that the case is causing them. My guess is that tiny particles are stuck between the case and the phone making it do this.

had this on my previous phone, had to rma it

Shpagata said:
Guys I found out what's causing the issue!!! It's not software or hardware. If you have the original Xiaomi case that comes with the phone it causes the ghost touches! I tried removing it 2 times and each time I put it on I experience the ghost touches and each time I remove it they stop for 1+ day which means that the case is causing them. My guess is that tiny particles are stuck between the case and the phone making it do this.
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Click to collapse
Just found i had a spigen clear case(bulky) and since i got back to Xiaomi's case it is happening a lot less than before.

My problem happens even without the case, and I used Nillkin Nature. Phone is in service currently. When it gets back I will tell you

Lol, how can this be? I believe you, though.
But oem case doesn't even touch the screen properly.
Sent from my Mi 9T Pro using Tapatalk

Phone sent to Service. After two weeks it is coming back to me with replaced screen. In about two days I will check if everything is fine.

Im waiting for what u have to say man, cuz i tried to rma it but they have it under review since last friday and today its being so ****ing annoyng that i want to broke the phone man

After screen replacement everything is Perfect ?

mist813 said:
After screen replacement everything is Perfect
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Yesterday and today have been terrible, ill be sending the phone on monday, ty man, hope it will not happen again

mist813 said:
My problem happens even without the case, and I used Nillkin Nature. Phone is in service currently. When it gets back I will tell you
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Any update on your phone? Touchscreen problem solved?

Problem arrive when using 3 finger swipe for screenshoot. there is solution on net about this problem, instead 3 finger swipe just use power buton and vo- for screen shoot

Ho boy, Looks like this is a common issue, I thought it's just me and I had to live with it with this ghost touch, Particularly when dragging the notification screen and clicking on the settings it won't respond had to do multiple times. S/W update, reset nothing helped. Last week one genius broke my screen and I had to spend and replace it. After replacing the screen I'm not noticing this issue anymore.

slavke1976 said:
Problem arrive when using 3 finger swipe for screenshoot. there is solution on net about this problem, instead 3 finger swipe just use power buton and vo- for screen shoot
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As I wrote, tried everything, also disabling screenshot gesture. Problem is hardware, after warranty screen replacement everything is working fine.
At first also had problem with dragging down notifications bar, screen was not responding. Then I turn on touch location in developer options and saw that there is ghost touch in that part. Day after Day it became more disturbing to the point I could not use the Phone.
You can buy whole screen on Aliexpress and change it by yourself if You dont have warranty.

I hope Xiaomi fixes this for those affected. The Redmi 5 Plus had widespread problems with the touchscreen which is why I bought the Mi9T Pro. Not had this myself but I'll be fuming if it ever happens to my Mi9T Pro.
I've still got the Redmi 5 Plus and it's been pretty horrific - the issues started whilst it was in the warranty period and then continued/worsened from there on out. I could kick myself for not getting it serviced in-warranty. Xiaomi essentially sold a lot of people faulty devices; many complain of ghost touching / non-responsive behaviour over on the R5P XDA sub-forum like it's a ROM bug.

I'm also facing this issue of phantom touch or ghost touch.
It's really annoying. I guess screen replacement is the only solution as I've tried almost all options mentioned in various internet sources.
Xiaomi sucks..!