[LINK TO FIX][UPD 29AUG]Touchscreen Not Responsive

I have a problem with touchscreen


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animaleyes76

Senior Member
May 23, 2011
430
73
Prague
Thanks button pressed OP. No 3 seems to have done the trick. Incidently, if it is static build up, then wouldn't charging the phone on a metallic earthed surface help. ie a computer tower or something? This is where mines just sat for the last 4hrs charging off my tower until I found my old desire charger. Anyway, all seems cool now :) wierd though.


This (charging on a metallic) surface (ie my laptop) was EXACTLY the solution that worked for me, that i posted on here some time ago. I can pretty much reproduce the symptoms at will. Charge on wood for a day or 2 it comes back, back onto the metal, gone.
 

Tirozz

Senior Member
Jul 9, 2011
118
23
Just a short check-in: my problems were gone after taking out the battery overnight, returned after ~2 weeks, been charging in these 2 weeks trough Sensation charger, 3rdparty usb cable, N97 charger and USB in car, different charging methods thus didn't seem to cause it since it has been working fine for 2 weeks. Took out battery again (not discharged) for 8 hours, still had problems, dissappeared after one day though, no problems ever since for ~2 weeks now again. Will see how things evolve.
 

MadBastard

Senior Member
Nov 6, 2008
548
178
Aix-la-Chapelle
After 6 days of use my Sensation i just got unlock issues :( .it is shame on HTC that they selling out faulty devices ! i am going to give it back tomorrow to the shop for replacement .will give a last chance for HTC phones becouse this is not a first time i got faulty phone from them out of box....
 

MadBastard

Senior Member
Nov 6, 2008
548
178
Aix-la-Chapelle
hmm and what about overheating ?my phone got sometimes over 45° C . down part of display and back cover was really hot. is it possible that overheating cause damage to the touch screen and make it unreponsible ? just an idea..
 

abrown0809

Senior Member
Dec 7, 2008
141
19
NYC
Hi guys,

I just want to inform you that I did the same test for faulty HTC Sensation of my colleague and it also eliminated all problems with the touch screen ! Everything goes now smoothly and without problems. The clue is to play with the touch screen for a while after taking the back cover out.

Regards,

misiek_to_ja

About how long is "a while"? How long should I play with it?

EDIT: I just played with it for about a minute without the back cover on, I have to say this is the first time I have seen the carousel in weeks. Lockscreen works with the lightest touch now. I hope this fix lasts. I put the cover back on and the effects are still there.
 
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abrown0809

Senior Member
Dec 7, 2008
141
19
NYC
The metal contact might be it...

I noticed if you touch the silver metal contact with your finger as you have the back cover off, the performance of the touchscreen increases. This is what I am talking about.

IMG_0048.jpg


Here is what I believe to be the problem, correct me if I am wrong. That metal contact is meant to ground the phone and it is not working properly or maybe since most of us use rubber or plastic cases, we block that from happening. Since the static has no where to go it just builds up on the phone, and in turn messing up our touch commands. Capacitive touch screens work because our body is a conductor. The screen is coated with a transparent conductor, so it makes sense that static would mess things up. I forgot who but someone said earlier that they charged the phone on a metallic surface and the problem went away, charged it on wood and the problem came back. I study electrical engineering, but I am still a student and I could be wrong but its a start.....right :)
 
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nugzo

Senior Member
Apr 20, 2010
3,345
684
54
Fayetteville, NC.
www.capefearcomputer.com
I noticed if you touch the silver metal contact with your finger as you have the back cover off, the performance of the touchscreen increases. This is what I am talking about.



Here is what I believe to be the problem, correct me if I am wrong. That metal contact is meant to ground the phone and it is not working properly or maybe since most of us use rubber or plastic cases, we block that from happening. Since the static has no where to go it just builds up on the phone, and in turn messing up our touch commands. Capacitive touch screens work because our body is a conductor. The screen is coated with a transparent conductor, so it makes sense that static would mess things up. I forgot who but someone said earlier that they charged the phone on a metallic surface and the problem went away, charged it on wood and the problem came back. I study electrical engineering, but I am still a student and I could be wrong but its a start.....right :)

Is this what you are talking about?

attachment.php
 

aliensmille76

Member
Mar 18, 2009
31
0
tested it yesterday,worked also for me:)
Removed the cover played for two minutes and it worked like new.

Great, thanks

That's a faster metode than with the safe mode.
But now i don't understand why the safe mode also work.

Sent from my GT-I9100 using Tapatalk
 

misiek_to_ja

Senior Member
Nov 16, 2007
102
34
Warsaw, Poland
EDIT: I just played with it for about a minute without the back cover on, I have to say this is the first time I have seen the carousel in weeks. Lockscreen works with the lightest touch now. I hope this fix lasts. I put the cover back on and the effects are still there.
tested it yesterday,worked also for me:)
Removed the cover played for two minutes and it worked like new.
Hi guys,

Good to hear that it also works for you ! So we have 4 confirmed cases ! You can thanks my daughter, because if I would not be with her on the playground, let be honest - little bored, I would not discover this :) I think it is definitely related to static electricity, as abrown0809 wrote: "Since the static has no where to go it just builds up on the phone, and in turn messing up our touch commands". By putting the phone in our palm we let it go to our body and then to the ground. It might be related to some silver metal contact, but I think the static could gather on different parts as well and by touching the whole phone you can let all the static electricity go to hell. In my case it is totally repeatable, I did several more tests and I think the time required to play with the touchscreen without the back cover is related to the amount of static electricity you have in your phone. Sometimes it is 5 seconds and sometimes I need to play with it for 2 minutes. But anyway it brings my touchscreen back to normal.

And guys - please remember that people mixed several different reasons in this thread for touchscreen problems. Sometimes it is because of the software (restarting the phone, performing hard reset, loading new ROM helps), but most of us experience the second problem - more hardware related.
 
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marine1312

New member
Aug 23, 2011
3
0
Had the same problem with sensation got a replacement bad screen they said

Sent from my HTC Sensation 4G using XDA App
 

veper

Senior Member
Jul 10, 2010
95
15
So basically the proper solution is for HTC to produce new, modified back cover that will deal with static?

Sent from my HTC Sensation
 

Pro Gamer

New member
Aug 9, 2009
4
0
Karaj
I bought this phone a month ago and I don't have any problem with touchscreen.
Mine is India branded and production date is : 5/26/2011

Sent from my HTC Sensation Z710e using XDA App
 

undercover

Senior Member
Oct 10, 2010
14,726
4,441
London, UK
Glad to hear that solution worked for more people, let's make it one more confirmed case and it goes in the OP as a main solution with all the credits to the guy who discovered it.
To eliminate the problem, after that we shouldn't use stock charger. I'll add more detail to the OP later. But don't forget ,HTC still keep very quiet about this problem, and haven't admitted to it yet, so please,let them know, email is in the OP.

Sent from my HTC Sensation Z710e using XDA App
 

mattdub1

Senior Member
Mar 5, 2011
643
40
hi, i can also confirm that taking the cover off and playing with the screen seems to have improved responsiveness so far for me as well, just figured i would add my experience
 

abrown0809

Senior Member
Dec 7, 2008
141
19
NYC
Thanks to misiek_ to_ja's daughter!! LOL. Finally my sensation is the phone I wanted to be. I at one point with all these touch screen problems I was beginning to miss the touch screen on my Samsung vibrant galaxy s. That's pretty bad. Now I'm using a Samsung charger to keep the sensation working good.

Sent from my HTC Sensation Z710e using XDA App
 

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  • 21
    Issues with touchscreen being unresponsive.

    Important Isuue usually appears at least after a week of owning the device
    Quick test:
    Lock device. Unlock, launch camera app in the lockscreen, take picture, try pressing back button, see if it responds straight away or with a delay. Test it with all apps on lockscreen.
    Issue unlocking ? I.e dragging circle to the middle?
    Bottom of a screen not responsive sometimes.
    Back button slow to respond.
    Apps launching when you try to change screen, i.e. phone registers swipe as a press.

    http://www.androidpolice.com/2011/06/06/is-your-htc-sensation-having-touchscreen-problems/

    CAUSE Grounding pin not touching back cover, which causes (by the looks of it) build up of static which messes up touch screen.
    FIX Best to use in conjunction with fixes below.

    POSSIBLE FIXes if above doesn't work, which it should, but don't expect immidiate results.
    1.Shut down phone and pull battery out for at least an hour (i recommend overnight). Press power button as to turn phone on, which in theory should discharge all the left over current in the hardware.
    Give it a go and let me know if it works.
    2.Letting battery discharge till phone turns off,put on charge and don't touch it till it's full.



    I want to thank abrown0809, eliteone, stuart0001(legendary patience :) ), zmfl, maschenazi, nugzo and all other people i forgot to mention for sticking with me while trying to work out FIX. Thanks to all the posters too.
    I take NO credit for the fix. :)


    Poll is here to show how many people have this problem to HTC, not to work out what percentage of users have it, as it will definitely be incorrect.
    Vote yes if you EVER experienced touchscreen problems, even if its gone now.

    PETITION for HTC to admit that there is touch screen problem.
    All info below:

    Below is the worldwide support address. There are also country specific contact pages but I'd suggest we all contact the same place so they can't keep saying they're getting no reports.:

    http://www.htc.com/www/contact/email-us/

    Might be worth at least including the link below which demonstrates our issue perfectly
    http://www.androidpolice.com/2011/06/06/is-your-htc-sensation-having-touchscreen-problems/

    I've also started a pertition here:
    http://www.ipetitions.com/petition/htcsensationtouchscreenproblem/

    Feel free to comment, sign & distribute as you wish :)
    7
    Theory busted. A lot of us have problem without screen protector on.
    Hi guys,

    It turned out that taking the screen protector out didn't solve the problem entirely. So I had two problems at the same time. First - the original HTC screen protector got stiff after sun exposure so it was completely unresponsive and second - my screen became to be unresponsive as well (most likely because of AC charger & car charger issue - see below). After I took the screen protector out it was better, but I still had several problems, but not that often as before:
    1) I could not drag the lock ring to the middle of the screen, it was not following my finger very often - very annoying
    2) Apps started from within the lock screen had some problems, for example back button was not always working, camera couldn't run recording (red spot was unresponsive etc.). Basically bottom of the screen was unresponsive. After ~10secs it started to work.

    From unknown reason all problems disappeared after some time. I was then using USB charger only, because I read that original AC charger can be the source of the problem. Then on Friday I got to use my car charger and after 4 hours it all started again ! I tried several solutions mentioned in the first post, but it didn't help. Then while my daughter was playing in the playground I took out the back cover, held the phone with my palm (see picture below) and played with the touch screen for few seconds. Then all my problems disappeared ! Instantly ! It started to be responsive again ! Then I realized that I did it before and it presumably solved the problem before. So I did quick exercise to prove my assumptions - I used my regular HTC Sensation AC charger. After around 4 hours it started to be unresponsive again. I took out the back cover while the phone was running, put the phone in my palm and played with it for some time - all problems disappeared again ! So maybe it is finally some fix for this issue ? At least it works for me. So basically I can confirm that:
    1) something is ****ed up with original HTC AC charger & HTC car charger or more - the way phone is charged with them
    2) something is ****ed up with the back cover

    Taking out the back cover (without turning the phone off), putting your phone into your palm and playing with the touchscreen for a while should solve the problem. You can put your back cover now again and it should still work. Let me know it if helps you or not.

    Regards,

    misiek_to_ja

    20hrsde.jpg
    5
    The metal contact might be it...

    I noticed if you touch the silver metal contact with your finger as you have the back cover off, the performance of the touchscreen increases. This is what I am talking about.

    IMG_0048.jpg


    Here is what I believe to be the problem, correct me if I am wrong. That metal contact is meant to ground the phone and it is not working properly or maybe since most of us use rubber or plastic cases, we block that from happening. Since the static has no where to go it just builds up on the phone, and in turn messing up our touch commands. Capacitive touch screens work because our body is a conductor. The screen is coated with a transparent conductor, so it makes sense that static would mess things up. I forgot who but someone said earlier that they charged the phone on a metallic surface and the problem went away, charged it on wood and the problem came back. I study electrical engineering, but I am still a student and I could be wrong but its a start.....right :)
    2
    http://xdaforums.com/showthread.php?t=1206188

    Worked for me....so far...the results were immediate

    Good luck
    2
    I have the device for 3 weeks now. Never had any issues. Tried all the tests stated in OP and everything works flawlessly. This have to be hardware related as not all the devices with the same software version have these issues. Do your self a favor and ask for a replacement. I know how frustrating these issues can be :)