[Q] Problem with touchscreen - "ghost touch" - General Questions and Answers

Hello, firstly I apologize for my English. I have a Chinese phone Jiayu G2S for over a year, but since few months touchscreen isn't working well. Sensitivity is good and when I have totally dry fingers, all is ok. But when I have it slightly wet, then i can't do anything! When I am clicking on keyboard, then there is "ghost touch" at top of screen, which cause closing keyboard. I was wondering what might be the problem and I thought about my hot baths in a tub with surfing the net. Maybe because of that, moisure get inside a phone? Replacing touchscreen is cheap, but I want know, could it be problem with touchscreen or motherboard?
Problem same like in this video: youtube.com/watch?v=hlSMSQCQWtw

Related

Sluggish Acer N311

Hello.
I'm dealing with this PDA that's from a friend. He told me that it's very slow (it had WM5). I update with some homemade ROMs to see what happens and the result has been really annoying:
Operations are sluggish. Even the screen aligning process is horribly sluggish. Everything is slow as hell. The screen seems to miss some taps, too.
What's the problem? Somebody with this problem?
EDIT: I have seen that the touch screen is failing! The taps are hold when the stylus is not on the screen. Could it be a failing touch screen?
Well, later to have checked and tested intensively I've come to the conclusion that this lack of responsiveness is produced due to a hardware error. The touch screen is failing and the CPU processes a large a mount of taps without actually touching it, so it's too busy to process any other task properly.
I hope this help to anyone having the same problem.
Thank
Issue with touch screen ?
Concerning your sluggish PDA, is there a plastic film to protect the screen ?
Some plastic films may cause very weird behaviours as the screen could be fooled and act as if some point on it would be touched. It's all the more true when the film is in contact with both the screen and its frame, due to bad alignment when sticking it.
I had a similar issue with a Tomtom One (1st issue) and was about to send the device back to warranty... everything was solved when removing the protective film !
It's rather obvious with first generation films that were really thicker than new ones.
Hope I was of help...
if you cant fix it and are going to get rid of it i will take it off you. mines motherboard is scrambled, but the screen is fine.
thats if your getting rid of it.

Touch Screen HW problem!!

Hello, I have my TP for a year and half, but i am 2nd owner. I have faced a new problem, and I can not solve it myself. Yesterday as i was doing routine on my display touch screen stopped responding. Everything is okay, but when I touch the screen nothing happens. Problem is, that contacts are somehow broken or something like that. I have removed plastic touch screen from the top of display and that contacts looks like 2 small piles of paper. I have almost rip off one of them, its that fragile!
And now my question: Have someone experienced this problem so far? I dont want to go to the mobile services, because I am out of warranty and I dont have 100e to throw out. Can these contacts be somehow ... stronger? Or can I completely remove the upper screen? When I put my finger on the bottom, where the contacts are, Touch screen is responding, so this problem is definitely problem with electricity. Please help me to fix It myself if it is possible.. Thank you. And if theres some problems with my english, I am sorry, I am from Slovakia.

Opinion on screen damage

Hi all,
I work for a company that has a lot of HTC touch2 phones. We've had a lot come back recently with similar 'unexplained' damage to the screens which stops the touchscreen part from working. The screen itself seems fine though. I've taken a picture one and attached it.
Does anyone have any idea what might cause this? I'm presuming just screen pressure but it'd be nice to be sure
Cheers
Louis
It's showing the "oily smear" issue which seems quite common with HTC's resistive touchscreens. I have a problem with it on my Touch Pro, although the touchscreen is generally usable - it sometimes requires some rubbing to "unstick" the layers of the touchscreen before it works though. When it first happened, the screen didn't work at all.
Touch Diamond:
http://forum.xda-developers.com/showthread.php?t=439410
Touch HD:
http://forum.xda-developers.com/showthread.php?p=6402516
Touch Pro:
http://forum.xda-developers.com/showthread.php?t=475294
It seems to be related to excess pressure, but it's pretty common it seems. Mine was just in its T-Mobile provided case in my pocket when it happened.

Problem after touchscreen replacement (original one)

Please help me with this touch screen problem:
In my HTC sensation 4G touchscreen has been replaced (together with display) and as a result I've noticed that device no longer registers fast swipes. No lag or other problems, just when you move finger fast - touchscreen fails to register it. In multitouch tests circle disappears during fast movements and in games like fruit ninja there is no line after the finger. Guys who helped me tried several digitizers they had in stock and all of them had this same problem.
My original digitizer and these ones are probably different models because mine was T-mobile and these have HTC written in the middle.
So I wanted to ask did somebody stumble upon this issue and is there a solution?
Or is it possible that all new ones they've tried are bad?
tenow said:
Please help me with this touch screen problem:
In my HTC sensation 4G touchscreen has been replaced (together with display) and as a result I've noticed that device no longer registers fast swipes. No lag or other problems, just when you move finger fast - touchscreen fails to register it. In multitouch tests circle disappears during fast movements and in games like fruit ninja there is no line after the finger. Guys who helped me tried several digitizers they had in stock and all of them had this same problem.
My original digitizer and these ones are probably different models because mine was T-mobile and these have HTC written in the middle.
So I wanted to ask did somebody stumble upon this issue and is there a solution?
Or is it possible that all new ones they've tried are bad?
Click to expand...
Click to collapse
i have similar issue. my screen doesn't register any touch on the left half, unless i touch the right half a few times first...:/ my digitizer got changed as well. but after that all is fine...only after i turn off the screen, then on again.....it's a little annoying, but not making my device useless at least.
as for to what's the cause, possibly each phone needs a special digitzer...as for the solution, i tried many, nothing worked...
I read of someone with a similar problem, they took screen apart again and found the wire was slightly pinched, they said they carefully put wires back in place and paid extra Attention to the wires and problem was solved. Now, I personally have not tried it but I did read this fix. Maybe it might help, worth a try? Hope this helps!
Sent from my HTC Sensation 4G
I'm on the same boat. Dropped it and cracked the screen. So I bought a replacement screen and replaced it myself. Its the one with just the HTC in the middle. (I'm T-mobile) Well now, like yours, it sucks at registering touch accurately. I have to press solidly on the screen to swipe screens or to open apps. Texting sucks because i have to press on each letter good or else it picks the wrong letter. I've searched for a solution as many have had this issue but seems like they just returned it for a new one. I cant since i replaced the screen and voided my warranty. I have taken it apart twice and carefully reassembled it making sure everything is good and snug and in the right place.....Still no love....Sucks! If anyone can help, it would be much appreciated as i have hit a dead end with this issue. Thanks.
Fisherman619 said:
I'm on the same boat. Dropped it and cracked the screen. So I bought a replacement screen and replaced it myself. Its the one with just the HTC in the middle. (I'm T-mobile) Well now, like yours, it sucks at registering touch accurately. I have to press solidly on the screen to swipe screens or to open apps. Texting sucks because i have to press on each letter good or else it picks the wrong letter. I've searched for a solution as many have had this issue but seems like they just returned it for a new one. I cant since i replaced the screen and voided my warranty. I have taken it apart twice and carefully reassembled it making sure everything is good and snug and in the right place.....Still no love....Sucks! If anyone can help, it would be much appreciated as i have hit a dead end with this issue. Thanks.
Click to expand...
Click to collapse
this is quite different problem. Sensitivity of my display is OK unless you move fast. In your case it seems to be the problem of this exact screen. Try downloading SGS Touchscreen Booster from Play Store and play with settings.

Strange problem with touchscreen

Hello, guys.
Recently, I dropped my M2 on the street, resulting in cracked touchscreen and lcd. Replaced both the touch and the lcd, everything seemed normal until I noticed that the middle part of the touch (a line going from the left to the right, around 1cm height) doesn't work, it just doesn't respond. Later, I got another new touchscreen and same story - same part of the screen doesn't work.
Maybe we have some kind of defect touch screens here in Bulgarian stores? Though I bought the two touches from two seperate stores. Or it's possible that it's something with the lcd? Even though it works normally, no strange behavior, no black spots, scratches or anything. Or could it be a software problem? Using Android 5.0.
Thanks in advance.
More likely to be motherboard problem if it's the same with 2 different screens being installed
Thanks for your answer.
One thing I forgot to mention - when testing the screen in Sony's Sketch app or in the service menu, if I run my finger from the top to the bottom, or the opposite way quickly, sometimes, the lines my finger makes don't get cut, i.e. it's like the screen is functioning properly, with no dead spots. What does this mean?
According to Sony support, it could be a compatibility issue between the phone/touchscreen/LCD, what do you think?

Categories

Resources