Edge of touchscreen non-responsive, bad digitizer? - EVO 4G Q&A, Help & Troubleshooting

About 2 months ago I started getting phantom touches on my screen, always on the right side. In the app Dotty, I could create the touches by moving my finger near the right edge until a circle would appear and start barely moving up and down really fast. This would be the primary touch point and other touch points would show on the screen in Dotty but in any other program all secondary touches were ignored(keyboard, homescreen). This created the illusion of the touchscreen simply not working. To fix it I had to sleep/wake the phone a couple times until it went away. This issue would come and go and seem to be really bad for a day then there wouldn't be a problem for a week. As of now, the phantom touch point problem seems to have gone away. However, the right 1/4" of the screen no longer registers touch. This mainly only affects the P key but is quite annoying. The strip that doesn't work runs from x:287-320(edge) in Dotty. I've flashed, re-flashed several roms and can't seem to fix the problem. Any ideas? Is this a digitizer gone bad? Should I contact HTC/is it covered by the warranty?

Related

Touch screen stops working

I'm the [almost] happy owner of a Defy whose digitizer, from time to time, stops working or goes crazy.
The "goes crazy" part it's obvious and it only happens in Angry birds. The game keeps on zooming in and out like, beside the finger that I am putting on the screen, there's an invisible one that shifts on the screen. Seems to be app related as this doesn't seem to happen in any other app.
On the other hand, from time to time, the digitizer seems to stop out of nothing. I haven't noticed any particular pattern on this but it might be driver/app dependent too.
Both of these situations are resolved with a blanking of the screen (top button).
Does anybody else have this kind of problems? Any idea where is the problem?
PS: If I get any more patterns I'll get back.
Yes, very rarely. Screen will not respond and have to time out screen and then it's fine. Usually happens while on charger.
I have trouble with most multi-touch games. After a while, the screen stops responding. Sometimes if I release my touch temporarily it will work again, but by then I'm dead or have crashed Not sure if it's just my fingers sweating onto the screen or something!!
I tried the multi-touch tester app in the market, and it tracks two touches without a problem; so it only seems to happen during games.
eg
Gun Bros
Mini Squadron
The multitouch tester also does the bug. Just try to simulate playing in the tester and you'll see sometimes one finger not responding. But I think there are very few phones with perfect touch screen for playing games. So not a big bug for me.

[Q] Screen remains static when keyboard is slid in

Hi
I bought a new RHOD100 and am running Stock WinMo 6.5. First few days the phone worked beautiful. But about a week of usage landed me in this condition.
The screen only lights up with the keyboard is out and not tilted. Other than that, if it's slid in (portrait mode) or when it is tilted up, the screen freezes to whatever it was like when the keyboard was slid out. The touch functions work, I can hear screen tap sounds, and if I click on the right icon things open and close too, but the display remains frozen until I slide out the keyboard and/or undo the tilt.
Any ideas how to fix this? Is that hardware or software?
I have never dropped it, nor exaggerated the tilting.. Can it be the Flex cable?
Definitely hardware... almost 99.99999999% sure this issue is hardware.
I'm betting it is indeed the flex cable. If you're feeling brave, you can attempt to take the phone apart and see if you can find the issue - keep in mind, this is very delicate and tedious work. Need a steady/careful hand and a lot of space! Good tools help too .
http://www.ifixit.com/Device/HTC_Touch_Pro_2
http://www.ifixit.com/Guide/Installing-HTC-Touch-Pro-2-Display-Screen/5546/1

[Q] screen flickering

Hi guys,
anyone had an issue where the screen flickers really badly? Mine has been working great then today it did a weird glitch where the button bar at the bottom went halfway up the screen, and the screen flickered really bad, like a tube light starting up. Ive reset it and now its flickering like a fluorescent tube light. everything still works, but im on the phone to three now organising to get it returned.
cheers
Ray
ok, so an update to this. after leaving the phone on all day the flickering screen stopped flickering, however now i have an issue where plugging my ear pollution headphones causes the phone to now show as a headset with microphone, and the voice assistant to appear. It is also now getting really hot on charging where it didnt before, so my returns envelope arrived today, and its off back to LG for a repair. Seems very strange how its happened after a month of relatively light use, where my 2 htc phones were working great after 2 years of use?
anyway, lets see what rubbish comes back from LG
Home screen Magnifies
I have a weird problem with LG G3 screen
When i double tap to lock the screen .....Home screen Magnifies and if i double tap on that again it goes back to normal
I dont understand why .....can anyone please suggest me if any option to be tweaked under settings
Thanks
Vj Roshan

[Q] Touchscreen issue

So I have the WI-FI version. Since last night the touchscreen has gone whacky. If I press anywhere on the screen one and a half centimeters from the bottom up, I get multiple touches registered, basically I got these zones, specific zones where this issue occurs, I have not found them all. On these zones, I don't even have to press, the touchscreen is super sensitive there that it detects me from rather high up before I even touch it. In any case, it renders the device unusable for me as I cannot type in portrait mode, and just barely in landscape.
Running stock ROM and rooted kernel with unlocked bootloader.
I basically want to find out if this is some permanent issue that cannot be fixed, or something that can be remedied.

Quick screen 'taps' register as 'drags' after screen replacement

Hi everyone.
I have recently had my screen replaced. After playing around, i quickly noticed that my keyboard screws up when i start typing.
The faster i type, the worse the problem is.
I checked touch response times and achieves normal times of about 60ms, however, i turned on touch overlay in developer settings and noticed that if i touch opposite sides of the screen quickly (to simulate typing), it would draw lines between the touches as if i was dragging between the two points.
This is what causes my keyboard to do funky stuff and heavily lag when typing fast.
Please note that this never happened before the screen replacement, and a hard reset didnt fix the problem.
Is there any software fix for this, or do i need another screen?
thanks.
nic_coe said:
Hi everyone.
I have recently had my screen replaced. After playing around, i quickly noticed that my keyboard screws up when i start typing.
The faster i type, the worse the problem is.
I checked touch response times and achieves normal times of about 60ms, however, i turned on touch overlay in developer settings and noticed that if i touch opposite sides of the screen quickly (to simulate typing), it would draw lines between the touches as if i was dragging between the two points.
This is what causes my keyboard to do funky stuff and heavily lag when typing fast.
Please note that this never happened before the screen replacement, and a hard reset didnt fix the problem.
Is there any software fix for this, or do i need another screen?
thanks.
Click to expand...
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I mainly work on iPhones, but it sounds like your digitizer is out of calibration. Don't know if there's a software fix for it, but hopefully this will point you in the right direction. Also I'd take it back to the place you had it repaired and see if they can fix if it's still warrantied.

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