Poor touchscreen responsivity on battery - Nexus 7 Q&A, Help & Troubleshooting

Hello,
Few weeks ago I bought Nexus 7 3G. So far I'm quite happy with it but I have some strange issues with my touch screen. I've read few topics on XDA, but none describes exactly the problem. When I work on battery my touchscreen response is awful. Sometimes I have to press few time until it reacts. Sometimes it "clicks" on totally different spot of the screen. It's almost impossible to uninstall apps by moving them out of the drawer to the recycle bin on top of the screen. When I press and hold selected icon the digitizer interprets this as a normal single touch and launches the app. I cannot draw any complicated shapes with my finger - it stops reacting after few milimeters of movement.
But all those issues are not present when I connect the tablet to power and use it while charging.
Do You think I should RMA it or perhaps I should try something else? I'm currently on JB 4.3, but on JB 4.2.2 it behaved the same way.
Regards

If you are going to return the tablet then the best way to demonstrate the fault is to go into Settings then Developer options and test the screen with the options under Input. If you haven't Developer Options showing under settings then select About Tablet and press "Build number" several (7 I think) times quickly.

Related

touch screen issues

Anyone else having their touch screen stop working property until they have to reboot? It's like it gets way off on where I'm actually clicking.
I have experienced that, but only after I had flashed the modaco rom. I basically returned to stock firmware this morning and am having to re-root my phone...
I have had a couple of occasions where it doesnt seem to respond correctly.
For me its like it looses the calibration, seemed to noticed it when the device is tilted horizontally.
reboot sorts it, only happened once or twice though.
If the phone is in your hand, make sure your other fingers aren't curling over the screen around the edges to much.
I noticed this happening, and backed my fingers off around the edge of the screen and it started working fine immediately.
I think the screen is just extra sensitive.
Curious if that helps.
-James
jmacdonald801 said:
If the phone is in your hand, make sure your other fingers aren't curling over the screen around the edges to much.
I noticed this happening, and backed my fingers off around the edge of the screen and it started working fine immediately.
I think the screen is just extra sensitive.
Curious if that helps.
-James
Click to expand...
Click to collapse
I read somewhere (maybe on this forum even) that non-multi-touch systems have this problem. Have the same issue with my HTC Magic, but after a while you learn of a way to use the device single-handed while not touching the screen.
I dont know if this helps or not but I have no idea what you guys are talking about
JoshHart said:
I dont know if this helps or not but I have no idea what you guys are talking about
Click to expand...
Click to collapse
The calibration problem (the screen registers a wrong spot than where you touched) comes up if you try to use a non-multi-touch phone single-handedly, so part of your palm (between the thumb and index fingers) touches the edge of the touch screen. Especially if you are trying to reach a top area of the screen while holding the phone with just that hand, likely some part of the palm touches the bottom of the screen.
If you want to try having the problem, you can touch the edge of the screen with a finger and try to click a link with another. It won't register the right spot.
Supposedly the problem should go away as soon as you lift that body part up from the screen.... so I don't know if this helps the OP or not.
same issue
http://forum.xda-developers.com/showthread.php?t=615711
does not look like its happening all the time. Ran few tests and still can't duplicate the problem in order to find the cause. so far this happened about 3-4 times on my phone.
i hope this gets resolved soon and that its not the touchscreen issue.
jmacdonald801 said:
If the phone is in your hand, make sure your other fingers aren't curling over the screen around the edges to much.
I noticed this happening, and backed my fingers off around the edge of the screen and it started working fine immediately.
I think the screen is just extra sensitive.
Curious if that helps.
-James
Click to expand...
Click to collapse
I've had this exact thing happen to me a few times. I notice the tip of a finger on the edge of the screen, move it, then it works fine right after. Sometimes happens with the base of my thumb hitting the bottom left corner too.
Just make sure you're not accidentally touching any of the touch area and it'll work fine.
same here
i have just created new thread, this one wasnt here when i first looked http://forum.xda-developers.com/showthread.php?t=616418
mods, could you please link togther posiibly.
also there is google help forum where this issue was raised http://www.google.com/support/forum...ff&hl=en&fid=2a024bb25d4496ff00047cead2b2c2ad
would be nice if everyone experiencing this post it to google thread
HTC support #
866-449-8358 7 days a week 6am EST to 1am EST 7 days a week
Touch Screen Stops Working
jchap2k said:
Anyone else having their touch screen stop working property until they have to reboot? It's like it gets way off on where I'm actually clicking.
Click to expand...
Click to collapse
I have had this same issue on my G1 as well a N1. This problem only happens from time to time, as happes with stock ROMs and custom ROMs.
For the N1, I was initial pulling the battery; however, I have found that if I hold the power button down (don't let go) and then touch the screen to unlock or power if off.
I have a friend with the Eris who was having the same problem; Verizon released a patch earlier in the week that seems to have solved the problem for him.
Jeffro
jhales said:
For the N1, I was initial pulling the battery; however, I have found that if I hold the power button down (don't let go) and then touch the screen to unlock or power if off.
Click to expand...
Click to collapse
You can perform a soft reset on the Nexus One by holding volume down, the trackball, and pressing the Power button on top. A half second later, your phone will reboot.
I am also having these touch screen problems, and I can confirm I am not touching any other part of the screen to have it interfere with the non-touch-screen interface. I been testing with what people has been saying on here with having any other part of the screen being pressed, so I have been testing it out and I can say its a different response then what I'm experiencing.
Here is what is going on with my nexus one:
1) it happens at random times (my device is on my table and I am pressing buttons with one finger)
2) it only affects the bottom-left portion of the screen when it happens, touching everywhere else is fine
3) it thinks I'm pressing an area around the soft keys, an example is if I press 'A' it thinks I press either the '?123' or the 'back' button, same if I press 'd' it thinks I'm pressing the 'menu' button.
I can conclude that since not all nexus one owners has this problem it is a device issue, which what is going on is probably the same as if someone was accidentally pressing a part of the screen, but it could be part of the device is assembled incorrect or deformed. The physical form of my phone is off on the right side, I can feel the gray plastic part next to the black border next to the right of the screen is a little more raised then the left side.
But there is my experience with whats going on to me and my two cents.
Ive had this a little bit on my device as well, but I think it's a software issue since it went away when I pressed the home button.
edit:
Also it has happened exclusively in Dolphin browser
here too
Sporadically, it happens with my N1 as well. When pointing at the middle of the screen (in a list for example), the input registers 2 cm below my fingertip. Rebooting fixes this temporarily but it is annoying.
A SW update could perhaps cure this behaviour?
rgds
Daniel
I just had this happen for the first time, all my presses were registering way below where i was touching, tilting into landscape in an app then back to portrait fixed it for me.
So now it happened to me too. I have the Nexus One for almost two weeks and I never had the unresponsive touchscreen. Of course I noticed that the center of the softbuttons is shifted upwards and that they don't register very well in the middle where they should and I had the problem before that the sms text input box didin't registered in the center so that the keyboard wasn't popping out but that is all only a problem of adjustment. Today in the morning after my phone was on standby over night I put in the charger to charge it and I got an email with pictures. I scrolled through the email and all of a sudden the screen became totally unresponsive. I tried to scroll and the screen registered at a complete different place. All of a sudden the email was gone because the phone registered the delete button even though I never pressed it. I could close the gmail program but I had a hard time to scroll between the home screens and the live wallpaper became unresponsive too. I decided to do a restart but I had a hard time to press the shutting down button because it was unresponsive too. This all happened not after heavily usage of the phone but after maybe 1 minute usage.
I am sure that I didn't touch another part of the screen when this occured because I realized before already that the screen becomes wacky if you touch it at two different places (lack of multitouch, so stupid to disable it). I hope that this is a software issue too. I can live at the moment with the 3G problem because it doesn't stop me from using the phone. The unresponsive touchscreen scares me more because because it becomes completely unusable.
i've noticed this with low battery. Twice its happened to me, the first time was when i first recieved the handset. and secondly was this morning when my phone was off with no battery again.
anybody want to leave their battery to empty out and try test if this is correct?
I've had this happen a few times in the ten days i've had the phone. I always make sure I'm not double dipping on the screen, and its easy to do since it will exhibit this behavior for a few minutes.
In my experience battery level has no effect on it.
A reboot always fixes the issue.
I figure it's software based.

touchscreen unresponsive after opening slide cover

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

[HELP] Unresponsive band of screen on D800 stock Lollipop.

Hi guys, I have experienced a number of screen relates issues on my D800 since the Lollipop upgrade. I am pure stock, took the upgrade OTA from ATT.
1. Knock on stopped working. Knock off works OK. I tried all of the suggestions online, update touch firmware, etc. but still no help. This is no big deal since I can use the back button to wake up the phone.
2. I noticed scrolling was unresponsive in Chrome but ignored it because I thought it might be me.
3. I was out and on the phone and I noticed I could not hear her well all of a sudden and then the call got disconnected. I tried to put my PIN in to unlock the phone but that area of the screen was totally unresponsive to touch. I could enter the numbers in the second row of the grid but there is a 1 in my pin and that would not register. I restarted a bunch of times which I had to do only with buttons because I could not click 'OK' on the screen to confirm the restart. I got a screen on the phone saying my screen was unresponsive and this is how to answer calls only with the buttons etc.
I got home and used by OTG mouse connection to enter my pin and navigate the phone. I did a factory reset which I had never done before. The responsiveness seems better now. There seems to be one section of the screen that is unresponsive, right near the middle. I can't click on any of the icons in the second row from the bottom. I can get to the notification shade which I don't think I could do before.
I am attaching an image of a memo where I just ran my finger up and down the screen without lifting it. You can see the dead area.
Has anyone had this problem or knows of any solution? Thanks very much.
xda-soar said:
Hi guys, I have experienced a number of screen relates issues on my D800 since the Lollipop upgrade. I am pure stock, took the upgrade OTA from ATT.
1. Knock on stopped working. Knock off works OK. I tried all of the suggestions online, update touch firmware, etc. but still no help. This is no big deal since I can use the back button to wake up the phone.
2. I noticed scrolling was unresponsive in Chrome but ignored it because I thought it might be me.
3. I was out and on the phone and I noticed I could not hear her well all of a sudden and then the call got disconnected. I tried to put my PIN in to unlock the phone but that area of the screen was totally unresponsive to touch. I could enter the numbers in the second row of the grid but there is a 1 in my pin and that would not register. I restarted a bunch of times which I had to do only with buttons because I could not click 'OK' on the screen to confirm the restart. I got a screen on the phone saying my screen was unresponsive and this is how to answer calls only with the buttons etc.
I got home and used by OTG mouse connection to enter my pin and navigate the phone. I did a factory reset which I had never done before. The responsiveness seems better now. There seems to be one section of the screen that is unresponsive, right near the middle. I can't click on any of the icons in the second row from the bottom. I can get to the notification shade which I don't think I could do before.
I am attaching an image of a memo where I just ran my finger up and down the screen without lifting it. You can see the dead area.
Has anyone had this problem or knows of any solution? Thanks very much.
Click to expand...
Click to collapse
check if it is a connector problem http://forum.xda-developers.com/showpost.php?p=60590628&postcount=176
LazyG said:
check if it is a connector problem http://forum.xda-developers.com/showpost.php?p=60590628&postcount=176
Click to expand...
Click to collapse
I just RMA'd it. It probably is the same problem you had but I am pretty sure I am still under warranty so I just sent it in.

Touch Screen Unresponsive

I don't expect there's much that can be done if the hardware is to blame. This reminds me of my Galaxy S3 -- so it's a problem that everyone else fixed ages ago. When I touch the touchscreen, very very often, it doesn't register that touch at all. Sometimes you get a delayed response. This leads to all kinds of fun where you tap the screen again at the same moment that PH-1 responds to your first touch, so it applies your second tap to whatever is going to come up on the screen a half second later.
Does anyone know if this can be fixed by firmware updates or is this a hardware issue?
same here! my huawei honor 8 is much faster
Touch Screen unresponsive is a hardware issue. I had the same problem with my HTC U11 until it was replaced. Essential phone does not have this issue assuming screen is working properly.
Sent from my Pixel XL using XDA-Developers Legacy app
Touchscreen responsiveness, having to tap more than once for the screen to register a touch and awful light bleed caused me to send it back. But it was from the first batch that were manufactured. No issues on my U11, but I bought it in early August.
Confirming u installed the most recent OTA (NMI64C)? Because that fixed my touch issues.
flakko86 said:
Confirming u installed the most recent OTA (NMI64C)? Because that fixed my touch issues.
Click to expand...
Click to collapse
Yep that's what I currently have. I think the phone found that update on its own a few days ago. Touch issues seem to be hit or miss and maybe less frequent since that update. We'll see how it goes from here.
touch unresposive is due too thermal trottling or like me the launcher stock.
Solved with Evie launcher
Using a different launcher and such didn't help me out, unfortunately. Besides the tap issues, scrolling through a web page in any browser or with apps was extremely slow and laggy. My PH-1 was already being returned, so I couldn't test the latest software update they pushed out. But my device also had some horrible light bleed all along the left and right edges.
No light bleed here. But [email protected], the responsiveness of this touch screen is worse than any other phone I've had. And the new software update hasn't helped at all!...
Same issue!
I too am having touch screen issues. Today, I was on the phone and went to go back to the screen and the screen stays black. I tried everything including pressing the power button and I got no response from the phone whatsoever. The only thing that finally worked was to press the power button and the volume down button and hold them at the same time to shut my phone off after the call already ended. In addition to that issue , I also use Swipe to type and when I do so it often skips over letters and types words that I am not even trying to type . It should be mentioned that I'm a very experienced swipe user and I have not had this problem with my S7 Edge or my Wellington . Also, I should mention that I have the most recent OTA. Also, has anyone else noticed that the camera shutter has a serious delay in it even with the Google camera mod?
I've noticed my touch screen freaking out sometimes. It has more to do with the screen having too many prints on it. Guess it's a bit too sensitive. I wipe the phone screen off and it's fine. Doesn't happen very often. I have one of the latest batches, pure white.
Already looked into this?
Sensitivity:
1. Tap on the "Settings" icon on the home screen.
2. Tap "Language and Input".
3. Scroll to the very bottom of these settings and tap "Pointer Speed".
4. Increase the slider to make the touch screen more sensitive and easier to tap. Decrease the slider to make your touch screen less sensitive and more difficult to tap.
5. Tap "OK" and then experiment with the results.
Essential Support still working on that and they send me this instructions for now.
I think it makes the user experience better.
Shadow Samurai said:
I've noticed my touch screen freaking out sometimes. It has more to do with the screen having too many prints on it. Guess it's a bit too sensitive. I wipe the phone screen off and it's fine. Doesn't happen very often. I have one of the latest batches, pure white.
Click to expand...
Click to collapse
Same.
Hope it will have a fix soon.
Early on I got the black screen that required a power hold reboot, since moving to Oreo I've not seen that
basongwe said:
Same.
Hope it will have a fix soon.
Click to expand...
Click to collapse
This I have experienced too
edit : solved with oreo beta
basongwe said:
When I touch some letters on my keyboard, it's unresponsive. Same with some apps. I don't know why this phone is so frustrating to use even if it's a very good smartphone.
EDIT : I'm on Nougat's lastest version, not on Oreo beta.
Click to expand...
Click to collapse
Had it on both versions to be honest, but hoping it's getting resolved as time goes on!
Just got mine..same thing but...
My screen was doing fine until i installed "All in one gestures". I was messing around with side gestures and this caused the screen to be non-responsive. I un-installed the app, reinstalled it and set it up differently and now it is fine.
I hope this helps.
D4rk_nVidia said:
Already looked into this?
Sensitivity:
1. Tap on the "Settings" icon on the home screen.
2. Tap "Language and Input".
3. Scroll to the very bottom of these settings and tap "Pointer Speed".
4. Increase the slider to make the touch screen more sensitive and easier to tap. Decrease the slider to make your touch screen less sensitive and more difficult to tap.
5. Tap "OK" and then experiment with the results.
Essential Support still working on that and they send me this instructions for now.
I think it makes the user experience better.
Click to expand...
Click to collapse
This helped me. I have mine set at approximately 3/4 and I'm happy one day in. Seems to work great now. I would still like smoother scrolling though. Thanks a million.
I was also having trouble with Android Pay and then found a post about the NFC being located near the bottom of the phone as opposed to the top as on my Nexus 6p.
With these problems fixed I'm completely pleased with this phone.
ugh! Flashed back to stock on 7.1.1/NMJ32F/436 as that is how my phone came, and now I have no touchscreen after re-boot?!?!?! any advice? Please?
Thanks,
DJ

G4 Digitizer problem?

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?

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