So my fingerprint sensor on my OP2 broke and i replaced it with no problems. However, shortly after i noticed that the every so often the phone becomes unresponsive to touch (except the capacitive buttons which remained active). After living with it for a few days its gotten to the point where its unusable and the capactive buttons even present the same problems now but i have noticed that pressing hard on the screen around the fingerprint sensor fixes the issue until i release it again. I have disassembled it many times and i cannot see any fault. Ive checked all connectors, ensured the LCD was properly grounded on the chassis and even tried insulating it from the chassis.
Any ideas?
Related
This is possibly a common thing, but the screen on my dopod has stopped being a touchscreen. Seemed to work sometimes, then stop, then start working again if i left it in the sun for a few minutes to warm up.. Have striped it down to see if it was a loose connector, but everything seems fine. D-pad and all the other front-cover buttons work. Is this more likely to be a screen issue or a ribbon cable issue?
Hey guys,
i noticed something strange on my tn7.
Sometimes (maybe 50% of the time) when i open the (original) slide cover to wake up the screen, the touch screen is very unresponsive.I can touch, but it notices only ~10% of what i am doing and is extremly laggin. when i then turn off the screen with the button and turn it on with the button again, everything is fine.
Also when doing this i have to wait for the screen to go off completly - if i wake it when the backlight is still on but the screen is black, the issue stays.
This never happens when i wake the tab with the button though, only with the slide cover. Thats what is kinda strange i think..
Anybody got an idea on how 2 fix this?
Running rooted Stock Kitkat.
Thanks
This is a problem that has existed since this tablet was released and persists still to this day. All you can do is cycle the screen off/on with the power button, unfortunately. Seeing as how this hasn't been solved in the last 10 months and Nvidia is showing signs that they're abandoning this tablet to focus on the Shield Tablet, it will probably never be fixed.
Screen lag
I have a similar issue on mine. I've had mine now about six months and it's very intermittent but at certain times, especially when the battery is low, the keys down the left side lock up and become unusable. I bought the tegra note 7 because of the stylus which I prefer to touching the screen with my index finger, but I don't much like the stylus itself which could have been made of better materials I think. I also find that sometimes it doesn't register clicks, then it will be perfectly ok for a little while. I had hoped with the tegra 4 and the much hyped stylus it would be very responsive but it's inconsistent. Anyone else recognise these flaws?
I also get this intermittently but only ever when waking it up with the cover, its never happened when turning on with the button. When it does happen a quick off and on with the button resolves the issue
I ran into an unusual problem. From a powered off state, my tablet worked normal. However, when I locked it using the power button or with the Samsung book cover, then I unlocked it, I would occasionally find a dark area in the upper left corner (tablet oriented with button to the left). A simple restart cleared the problem. This would happen randomly.
Two days ago it got worse. When I lifted the cover or pressed the power button, with the tablet in standby mode, the screen would remain dark but the two soft buttons above and below the physical button would illuminate as normal.
The only way to get the tablet to work again was a to hold the power button down and force a hard reset. It would work fine until I locked it or the screen timed out and the OS turned off the screen. When I attempted to unlock it, I had the dark screen problem. Additionally, I also discovered that when I did a hard restart, the screen brightness would not change when I adjusted it with the software control.
Using a flashlight, I turned it on over the screen and discovered the problem was the screen backlight was not turning on so the screen was visible. However, because it was working after a hard reboot I knew it had to be a software or hardware problem and not a backlight failure.
During my troubleshooting I visited these two links:
http://forums.androidcentral.com/samsung-galaxy-note-10-1-2014/340754-samsung-galaxy-note-10-1-2014-screen-stays-black-but-audio-buttons-work.html
https://www.youtube.com/watch?v=moaGerOZ8CA
After reviewing the Youtube video I was able to use a plastic hotel room key to remove the Tablet's cover. I then removed and reseated the display ribbon cable. During the reinstall I ensured the cable was properly seated into the connector. I then powered on the tablet and locked and unlocked the tablet several time to ensure the backlight/black screen problem was resolved.
I hope this helps anyone else whom may have experienced a similar problem.
I think I've found the culprit. I had the same issue where the screen went black but removing the back reattaching the screen cable fixed it temporarily.
What I did to fix was go to "Lock screen" setting and set the "Lock automatically" to "immediately".
Ever since the issue has gone. It seems there's a software issue but god only knows.
I hope this solution works for others too.
Had this a couple of times with stock roms. First time during the first or second reboot or power cycle, which worried me back then. Not with CM/LOS/RR, all from our David(P605).
The issue with the cables running across the battery is a real concern. I think it's caused by pressure on the back causing the cables to bend and work in the tiny gap between battery and cover, which immediately closes on slight pressure. A case with a stiff back should help, i never had such issues. One part which receives extra pressure is the battery connector, which can cause bad solder connections there.
I have a Moto G4 that has had the touch screen become very erratic lately. This issue appeared shortly after a factory reset. The phone is stock, recently OTA updated to NPJ25.93-14.7. It frequently freezes and won't respond to touches of apps or the home/back/recent buttons, and won't side scroll to the next screens properly. Sometimes random apps launch on their own without any touch, and if you try to quit them with the back button they keep relaunching. The problem is intermittent.
I activated "Show Taps" in Developer Options and when the problem is happening there is a tap dot near the lower right side of the screen. It bounces up and down a little bit and vibrates sometimes. When this dot is visible tapping on anything else like app icons or buttons usually has no effect, however the taps are shown on the screen. If I hit the power button to make the screen go black it will sometimes recover when I reopen the display, other times it takes a reboot.
Wondering if it's a hardware issue, a guy at a Verizon store who seemed to know more than most said it was a faulty digitzer--it's seeing touches where there are none. I've replaced displays successfully before, would just like to have a confidence level that the digitzer is really bad before doing that, as opposed to a software or other hardware issue. Any ideas about problems that might cause this problem, like other hardware or a corrupted OTA? Seems very hardware-ish to me, but I'm no expert.
I have Drive links to a couple of short videos on the symptoms, can send links. Much appreciate any insights.
Mine has that issue as well. It will spam the 9 key on the unlock screen or anything in that spot if an app is open or what is on that spot at the home screen. I have to double unlock the phone to fix it. I guess turning the screen on and back off resets it for that session. But it's mostly every time the screen goes dark and comes back up I have to turn the screen off and back on to use the phone.
I had a similar problem and was able to send it in under warranty and get a replacement phone
G4 Digitizer or ghost touch
Apparently this is called Ghost Touch issue, and affects many phones. One solution tried is to disable Battery Optimization for System UI and Google Now Launcher in Settings>Battery>Battery Optimization. That seemed to cure it for a week or so, but the problem returned today. I can sometimes recover form it by hitting the power button to blank the screen and then reopen. Other times it requires a reboot. I see all kinds of alleged solutions out there from dimming the brightness to removing tempered glass protector to using a slow charger, but those don't seem like real fixes but workarounds (if they even work at all). Any other ideas?
I've searched a good bit and wasn't able to find any information regarding the exact problem I'm having.
Bought a used G6 for starters
No water damage indicated by the sticker
The phone works great on the home screen and app drawer
I turned on dev mode to show touches
When you're in the camera it will stop responding to touches, you can still take pictures using the side buttons. The screen will become responsive again after a couple minutes. This whole time you can take pictures and the screen is functioning just not responding to touch
This happens also when you're loading web pages, even a Google search the screen will stop responding to touch and then eventually start responding again for a short while till you load another page or start moving around the page too quickly it seems. However again the screen is functioning, video previews are playing, just no response to touch.
Loading a game like Asphalt 8 the phone doesn't respond to touches until a couple minutes after the game has been fully loaded.
Even after a hard reset/factory reset the screen will sometimes be unresponsive upon the initial welcome/setup screen and then it will become responsive and you can go through the whole setup without an issue.
Any insight? Any suggestions? If I can't figure it out I'll just get rid of it but it's in great condition a shame it just doesn't function properly.
Thanks in advance!
Looks like some sort of hardware issue...
But before you start to worry...
This might sound like a stupid question but have you tried cleaning your screen with some cleaning solutions?
Sometimes dust mixed with dried sweat can cause severe touch responsiveness issues even if the screen looks like it's clean.
This is an older thread, but maybe I can help someone.
I replaced a touchscreen on a LG G6 and saw that the touchscreen did not work if the back cover was not mounted correctly and the data transfer between the phone and the fingerprint sensor was interrupted. This may be a common problem for users because the connector is small and the back cover is attached with a double-sided tape nearby this connector. It seems that the touch screen is disabled by the phone software without the back cover.
MaBaGeMiFlo said:
This is an older thread, but maybe I can help someone.
I replaced a touchscreen on a LG G6 and saw that the touchscreen did not work if the back cover was not mounted correctly and the data transfer between the phone and the fingerprint sensor was interrupted. This may be a common problem for users because the connector is small and the back cover is attached with a double-sided tape nearby this connector. It seems that the touch screen is disabled by the phone software without the back cover.
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Thank you so much for this comment!
My gf phone had problems lagging and becoming insensitive to touch, the problem got worse and worse, almost never responding anymore. Performed a factory reset etc, didn't help.
After reading your comment I tried pushing on the back cover while swiping. Now I'm able to revive the phone after pushing hard on the top and bottom left corners, of the back cover.
Thanks a mille !
Lg g6 has back panel from glass and under it you have contact for fingerprint sensor.Somehow if the back panel is loose it can cause touch fail,and you cant use the device touch function!
--->FIX:
So you will have to turn screen off using back button,and then try to press back glass on left and right side of the camera lens !
Then simultaneously press the power button and try to use the touch .
If it does not work tru again around camera lens and turn off screen each time you press the back glass!
For me it worked !