ME572CL touch screen problem - MeMO Pad 7 Q&A, Help & Troubleshooting

Hi,
I have recently bought my tablet, in last two days my tablets acts a bit crazy, sometimes I touch a point but another point reactions
for example when i`m typing and press a word it types another word or opens notifications or even gets out of application.
How can I solve my problem?
thanks

Touch does occasionally seem to be off a bit for me as well. I keep wondering if the problem is my tempered glass screen protector and me being used to a device that has an extremely sensitive touch screen.

This can sometimes happen when using the tablet while plugged into the charger. Especially if not using the factory provided USB charging cable.

muiriddin said:
Touch does occasionally seem to be off a bit for me as well. I keep wondering if the problem is my tempered glass screen protector and me being used to a device that has an extremely sensitive touch screen.
Click to expand...
Click to collapse
After removing the screen protector my inaccuracy issue went away. So my issue was probably different than the original poster...

lexridge said:
This can sometimes happen when using the tablet while plugged into the charger. Especially if not using the factory provided USB charging cable.
Click to expand...
Click to collapse
it seems that it is relevant with electricity since this problem happens only when I hold it in my hand

Related

Nexus One hardware issue.

ok it doenst happen when i lay the phone down on the surface and click on the screen it works perfectly
however when i hold it with my right hand and touch the middle of the screen with my thumb
it opens up phone dialer, or appdrawer or vibrante cause it clicks the capacitive button.
when i hold it with my left hand it gets a little bit better but it still does.
if i hold the nexus carefully and touch the screen , it works, when i hold it like this
the things gets better when i put a thick case like otterbox..
is this a hardware issue? ( found similar video on youtube)
my phone is rooted but can i still get a replacement phone?( already put everything back to stock)
and if i do get a replacement, are they going to charge me with anything?
my current nexus one trackball doenst scroll up but everything else works.
How many of you guys got a replacement even though your phone was rooted?
Make sure part of your hand doesn't touch the screen.
Sent from my Google Phone
it's a hardware issue...
all you can do is not grip the phone too closely to the edge of the screen. It registers touches even if you are not touching the screen completely. But that to be a problem you have to have giant hands
I've had this happen to me once since I had it from launch day. It did happen with my Otterbox commuter series, and a clarivue screen protector. But I turned it off and on again and it was fine.
anyway as stevio jobsio whould say, you're holding it wrong
ChongoDroid said:
Make sure part of your hand doesn't touch the screen.
Sent from my Google Phone
Click to expand...
Click to collapse
ok so it is a hardware issue?
no i am not touching any part of the screen. i made sure i wasnt touching the screen.
but it does happen when i hold my phone closely to the edges.
i never had this kind of issues with other touch screen phones..
Well I dunno... One finger at a time and your good to go unless you got fat hands lol
Sent from my Google Phone
I can confirm that my device too does this. When lying in bed I browse the net with one hand and try and scroll....the edges of the touchscreen seem to register depression when the chassis is pushed or gripped too hard also.
It's a minor irritation to me, but I agree it is a hardware issue.

[Q] Touchscreen issues. Replace now or wait?

Since day one, I've had touchscreen issues. When the charger is plugged in, the keyboard is unusable. One touch triggers keys all over the place faster than I could ever touch the screen. Unplugging the charger fixes that issue.
After a while, phantom presses start happening. If an app supports multitouch zoom, it becomes impossible to scroll instead of zooming. Keeping the screen clean seems to delay the problem from happening. If the problem presents, just cleaning the screen won't help. I have to turn the display off and back on for any effect. I've heard putting on a screen protector helps with this issue, but I haven't had a chance get one. If the screen protector just masks the issue, that doesn't seem like a good fix.
Should I try to get a replacement Nook Color now that doesn't have these issues or should I wait until the last month of my warranty to see if I can get more developed hardware? There doesn't seem to be a consensus if these issues are hardware or software.
scratchfury said:
Since day one, I've had touchscreen issues. When the charger is plugged in, the keyboard is unusable. One touch triggers keys all over the place faster than I could ever touch the screen. Unplugging the charger fixes that issue.
After a while, phantom presses start happening. If an app supports multitouch zoom, it becomes impossible to scroll instead of zooming. Keeping the screen clean seems to delay the problem from happening. If the problem presents, just cleaning the screen won't help. I have to turn the display off and back on for any effect. I've heard putting on a screen protector helps with this issue, but I haven't had a chance get one. If the screen protector just masks the issue, that doesn't seem like a good fix.
Should I try to get a replacement Nook Color now that doesn't have these issues or should I wait until the last month of my warranty to see if I can get more developed hardware? There doesn't seem to be a consensus if these issues are hardware or software.
Click to expand...
Click to collapse
That must be frustrating. Mine does not behave this way at all (though I've only had it for 4 days). If you bought it in the store, I'd exchange it. If you bought it via the BN ebay store, I'd try the screen protector first as I hear it's quite an ordeal returning it via ebay.
This us a very common issue. It has something to do with sensitivity of the screen increasing greatly when the unitbis charging or the screen brightness is way up. I just chage mine at night and don't worry about it.
I was having a lot of problems with phantom touches -- I even replaced my 2nd NC just to get another one that had the same issue. I ended up putting on a B&N anti-glare screen protector and haven't witnessed any phantom touches since then.
Edit: I actually meant to post this in the other phantom touches thread. ;/
Happens a lot to me even while unplugged. Known issue. Until I pick up a B&N screen protector I find locking the device and a quick wiping of the screen with a microfiber or any soft cloth (my shirt works in a pinch) removes moisture and oil build-up that is causing the uber-sensitive digitizer to register phantom touches.
Sent from my Nook Color using Tapatalk

Milestone Touch Screen acting wierd

well when im only using touch keyboard the corners and edges dont work
P,L Backspace, Go, The whole bottom, A, i
Its a common problem. I had the same. Unfortunately your touch screen is dying. Replace.
Sent from my Milestone using XDA App
Welcome to the club, apparently some people fixed it by warming their phone, putting it in rice, or replacing their digitizer.
i have another kind of problem: sometimes the screen begins it's own life, like somebody quickly touching it (solves with on/off button).
And sometimes i touch it in some point, but it thinks, that i touch it in another.
Disappointing, but not annoying.
well it seems to be working fine now
0667 said:
i have another kind of problem: sometimes the screen begins it's own life, like somebody quickly touching it (solves with on/off button).
And sometimes i touch it in some point, but it thinks, that i touch it in another.
Disappointing, but not annoying.
Click to expand...
Click to collapse
happens to me EVERY week
0667 said:
i have another kind of problem: sometimes the screen begins it's own life, like somebody quickly touching it (solves with on/off button).
And sometimes i touch it in some point, but it thinks, that i touch it in another.
Disappointing, but not annoying.
Click to expand...
Click to collapse
Got the exact same problem, send it for repair. Apparently they found corrosion in my internals, though I really have no idea how liquid got in there. There is no spillage or any sort happen to my phone.
Oh well that means goodbye to my Milestone and back to stone age for awhile.
I had this same problem a week ago, and it happened all day long. It happened that my screen was wet (don't ask me how, I don't know), and now it's working just fine
Well if your touchscreen are not responding well to your touch, or if you feel that a ghost has been playing around on it (eg. "like somebody quickly touching it"), then it's a symptom that the touchscreen is faulty and it's time to replace the digitizer or buy a new phone
I faced the same problem sometime. In this case, reboot the phone may fix this problem.
If it doesn't work, I think you have to replace the touch screen.
nowforever said:
I faced the same problem sometime. In this case, reboot the phone may fix this problem.
If it doesn't work, I think you have to replace the touch screen.
Click to expand...
Click to collapse
+1
Had one issue like this in 3 months, 1/5th from the top of the screen wouldn't respond anymore, no matter the program. The issue went away after rebooting the phone.
I am facing the ghost touch problem or the right side is not working at all. First time, it started on it's own but last night, while it was connected to the PC the nightmare began. I don't know what the heck should I do, because I don't have money to spend on new digitizer. Last time the problem was solved by letting the phone in a dry place (it wasn't dropped in water or so). I hope this time will work too... BTW, pressing the on/off button seems to fix the issues for ~3-4 seconds. Anyway, Moto sucks .
neato4u said:
Well if your touchscreen are not responding well to your touch, or if you feel that a ghost has been playing around on it (eg. "like somebody quickly touching it"), then it's a symptom that the touchscreen is faulty and it's time to replace the digitizer or buy a new phone
Click to expand...
Click to collapse
Are you sure this isn't the flex cable problem?
If it is the flex cable problem, where can be found to buy and replace? Because I am sure that is less expensive than replacing the whole digitizer.
I had the same problem, but it's more than a month that I recharge battery with a Samsung wall charger (700mAh power), it completely desappear.
One week ago I charged the battery with the USB cable and the problem reappear, desappearing only after a reboot.
It's NOT a flex problem for sure, our phone is very susceptible of current variations when charging. If the problem still remains after unplug and reboot, I suggest to try with another battery.

[Q] Repairing/assembling G1 -> broken volume rocker and touch panel

Well, I fixed my old broken G1 with new screen, touchscreen panel, case and keyboard.
Now I have 2 issue:
1) Sometimes my touchscreen goes grazy!! If I use the touch test application I see that sometimes when I touch the screen in an area there is another virtual touch in another zone of the screen. I read that it can depend from the current source when I charge the phone.. but I'm going crazy!! I opened my phone 10 times (I thought there was a problem in the cable that link TouchPanel to LCDPanel, because when I lock the cable with the clip it tends anyway to go out from the connector, now I put some scotch tape to fix but the problem is here.. so I think is another problem).
2) My volume rocker doesn't work!!
I bought 2 new keyboard to fix this problem, but no one of that fixed the problem. I thought the first new keyboard had volume keys broken, so I bought another one, but the problem persists!!
Now the Touch problem rarely happens, but the volume rocker is completely unusable..
Someone have experience about G1 assembling/repairing ?
Thanks and sorry for bad english
if you have put in multiple keypads have the same issue i would assume that it is the connection going to the motherboard. just a guess there but its either that or you have had a bunch of faulty keyboards.
only other thing would be a software problem
does the keypad work in recovery (let you go up down throughout the list) ?
as for the touch screen, probably need a new digitizer or flex cable, both are cheap and it sounds like you have the knowhow to replace them.
Ok, but digitizer is new!! screen also is new, and I have bought a total of 4 flex cable because I see that they are fragile (I broke the first I bought).
I tried to change flex cable but the problem remain the same.
The only thing that can be damaged is the LCD cable that links to the flex cable: it has a small cut where the cable have a curve, but the cut don't reaches the contacts (the cable is transparent). I also use some glue and scotch tape to mantein lock the cable.
The digitizer cable is connected to the LCD cable, and then they go to the flex cable that connect them to the motherboard.
The strange thing is that seems a software issue, because if I turn off and than turn on the screen, the problem is fixed for some seconds, minutes and sometimes hours...
Another strange thing is the possibility to control the screen with some metal objects from the moment that the virtual touch problem appear (I can control the screen also without touch it, with hand and piece of metal)
video:
have you tried a factory reset if you think it may be a software issue? if that dosent work you can try install a whole new rom.
really it sounds like it isnt the hardware since you appear to know what youre doing. i have a had a few phones that had screen (digitizer) issues and a new rom flashed cured it just fine
since you dont mind putting a few dollars into it, and your familiar with the inside, you can always try to pick up a cheap motherboard or spare phone from ebay or what have you, then swap the motherboard and you could then hopefully find out if it is the hardware or software
nagash91 said:
Another strange thing is the possibility to control the screen with some metal objects from the moment that the virtual touch problem appear (I can control the screen also without touch it, with hand and piece of metal)
Click to expand...
Click to collapse
Huh sounds like you got a cheap digitizer than. Most good digitizers use heat to touch. If it's literally touch, then sounds like its a fake/meh digitizer. i hate the digitizers that aren't heat, but press. I see them all the time in those first samsuck touchscreen phones. And they usually die in a bit. I had a Samsung behold with a screwed up digitizer
demkantor said:
have you tried a factory reset if you think it may be a software issue? if that dosent work you can try install a whole new rom.
Click to expand...
Click to collapse
Yes I flashed 3 or 4 roms after a wipe (I tried also super-wipe.zip), but the problem is here..
The digitizer works well some times, but sometimes get crazy (you can see in the video).
I don't that my new digitizer is fake, but I really don't know!
BTW I'm trying to repair my phone for fun (now I have desire z) and because I am fascinated by my old G1.
PS:
I see another strange issue--
If I touch the screen when the phone is on a table the screen digitizer is not very sensitive and can't take input from fingertips.
If I touch the screen when the phone is in my other hand, the screen digitizer is a lot more sensitive and it take input from fingertips.
My impression is that there is an electric field or something similar that disturbs the digitizer, and when I take the phone in my hand I discharge that field to ground. Also when I turn off the screen, seems that the electric field discharge so when I turn on the screen is ok, but after some seconds the field returns to disturbs the screen.
I really don't know, but is the impression that I have.. something that is not shielded.
Now I'll try to use my phone in airplain mode.
Thanks guys, I'm happy to see that this forum is still very active

Wierd issue with Nokia 8.

I only got this phone couple of days back and I am having a strange problem.
After installing a screen guard, touch stops working when phone is lying on flat surface. Once I lift the phone, touch starts working again. This happens regardless of the phone is plugged or not in a power socket.
Removing screen guard resolves this issue. However, I installed three different screen guards of glass, plastic and rubber types and with each type touch stops working on a flat surface.
I also did a factory reset but it didn't help. I tried with case on and off but the problem still persists.
At this point I am clueless how to resolve this issue as the phone doesn't seem to be defective as touch works flawlessly without a screen guard.
Same here!
With glass screen protector I have this issue... Can't really use it while device lying on a table.
Hi... Same here also... I thought the screen problem but not even lying on the table but when in charging lying on the table also can't touch... And sometimes it's stuck when to touch... My nokia 6 i think also like that... Maybe the screen curve is??
I have screen protector bought from Taobao, no such problem on my Nokia 8, TA-1004.
The screen protector is not glass type, but looks like plastic type.
Another strange observation: If I plug headphone jack when the phone is lying on flat surface, touch starts working again.
I suspect this entire thing has to do with metal/glass body of the phone and static electricity generated or magnetic field around touch panel.
I don't have much knowledge on this type of scientific stuff so I am not sure what the problem is.
It's the cheap glass protector and its glue that is messing up the touch screen.
references said:
It's the cheap glass protector and its glue that is messing up the touch screen.
Click to expand...
Click to collapse
I thought so. But what about headphone jack fixing touch issues with screen protector on?
Also, I have used similar quality screen guards on Moto and Huawei phones at my home and they don't have this issue.
Nitg16 said:
I thought so. But what about headphone jack fixing touch issues with screen protector on?
Also, I have used similar quality screen guards on Moto and Huawei phones at my home and they don't have this issue.
Click to expand...
Click to collapse
Are you connecting it to headphones or speakers?
Maybe the capacitive buttons doesn't like the glue and messes up everything? You could try enabling these in the Developer Options: Show taps & Pointer location. Let me know what is happening
references said:
Are you connecting it to headphones or speakers?
Maybe the capacitive buttons doesn't like the glue and messes up everything? You could try enabling these in the Developer Options: Show taps & Pointer location. Let me know what is happening
Click to expand...
Click to collapse
Headphones.
Enabled taps and pointer location. When phone is not touching a flat surface everything works fine. A curve is drawn on screen showing various gestures and a circle is drawn to show taps.
When lying on flat surface, if I use any touch gestures (e.g. scrolling) curve is drawn once in 5-6 attempts. Same with taps, circles appear only once in a while.
It is all very erratic. When I repeatedely try to tap anything, I receive ghost touces at a different part of screen.
Just noticed that I don't need headphone jack to fix touch. Blocking 3.5 mm port with one finger also works. This is truly getting weird.
Have you shown it to the Service Centre? Do they have any theories?
Sent from my Pixel 2 XL using XDA-Developers Legacy app
No, since the phone works perfectly without screen guard, I think service center guys will simply tell me to use it without a screen guard.
But I will indeed show them this problem after few days, though I am not sure they will understand or will be helpful in this regard.
I think I am reaching somewhere. The antenna reception at the top might be messing with touch.
What I have observed that touching the top of the phone or keeping any object or my hand one inch away from top of the phone fixes touch issues.
If I remove the object or move it farther than one inch, touch becomes messy again.
If I put little pressure on bottom chin of the phone, the top of the phone raises a bit so that the top antenna is not close to flat surface any more. This also fixes touch issues. Lowering top part of the phone brings back touch issues.
Anyone else with this issue can test this?
This video exactly describes my issue:
I found that many phones had these issues in past including oneplus, lg, sony and galaxy phones. Everywhere it was mentioned that it is a grounding issue which is unfortunately a hardware detect.
My phone is fortunately within replacement window. So I will contact the seller and request for a replacement.
I was thinking about the grounding, but when you mentioned you used headphones i thought it couldn't be the case.
Keep us updated if you get it replaced.
Just received the replacement. Same problem on the new one
I don't know what to do now. No other phones in my family have this problem and that includes $200 budget devices. This is flagship and much more costly.
I will just summarize different cases in which the touch issues on a flat surface gets fixed on my device:
- Inserting headphone jack (with screen gaurd applied on display).
- Inserting charging cable (with screen guard applied on display).
- Touching any part of the phone with finger including blocking the headphone jack (with screen guard applied).
- Removing the screen guard.
I am tired of this sh*t. I have tried all things possible to fix it. I have also wasted money on 6 different screen guards to fix this issue.
Some guys on galaxy s8 forums mentioned that modern curved phones uses a touchscreen placement mechanism different than traditional smartphones (they were also having the same problem).
There were two possible solutions mentioned:
Find a screen guard that has glue all over, not just around the edges or at dots. Which means that screen guard should stick to the screen 100% flat without any gap, air or bubbles.
Second solution was to use a flip cover to protect the screen and no screen guard.
I will go with second solution and buy a flip cover. I simply have no energy left to hunt for screen guards that work properly on Nokia 8. Not to say that you will never know if it works or not unless you purchase it and stick on your phone.
Hi, I'm writing from Italy and I've the same problem, exactly the same problem, solvable with the same solutions you have proposed: remove the protective film (a glass screen guard in my case).
I'm noticing that the touch screen works perfectly with the protective film only if the phone is connected via USB cable to the battery charger or to the pc.

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