yashsingh1/xdaforums huggingface dataset:
[Nexus 7 (2013) Q&A] ascar1s:
Update: Replacement not suffering from same issues

So, I took mine back to Bestbuy, and as soon as they gave me the replacement device, I took it out to test. Immediately, I didn't notice the same problem with the touchscreen that I've detailed previously. (The easiest way to test it was to try swype-style typing which would fail—i.e., detect completely garbled input after a phantom lift—after two sentences max.) Yesterday, I had time to get the new (replacement) tablet set up. I simply don't have the touchscreen issues I had before.

Now, I have not installed the dreaded OTA update. The "update available" icon is sitting silently but menacingly on the left of my status bar, taunting me that I may make an accidental press. (Seriously, though, I did hear on a google forum from someone in the same position who said they installed it without a problem. I should probably just make a nandroid and install to test.

Would that be helpful? If so, I will.
[Nexus 7 (2013) Q&A] :
It won't help a nandroid wouldn't restore firmware AFAIK
[Nexus 7 (2013) Q&A] delfin2003:
I say test the crap out of it before the update, then update, and let us know. It sounds like a firmware issue to me. They may have used different touchscreen controllers.
[Nexus 7 (2013) Q&A] :
Seems like both to me. Firmware makes the touchscreen more sensitive but on some screens it also makes it worse off as they probably use about 5 different touch panels in these things to speed up manufacturing like a lot of companies.

I've tried 7 all have issues. I'm sticking with it since I see a fix coming and its not too horrible.

I tried the iPad mini but the resolution was terrifying. Lol
[Nexus 7 (2013) Q&A] delfin2003:
lol
[Nexus 7 (2013) Q&A] Coronado is dead:
Ugh, this issue is really making me want to return my 16GB and grab a 32GB while I am at it :/
[Nexus 7 (2013) Q&A] :
No point man save the money and buy a case or just wait it out till the day before the last return date
[Nexus 7 (2013) Q&A] Coronado is dead:
Well, my last day is Friday. Why would a case help? I actually have one of those on order (a Poetic flip case). Do they help to ground a bit?
[Nexus 7 (2013) Q&A] :
No they don't help at all I meant why spend more money on a product that has a little bit of issues , the best bet is waiting to see what Google does and if that's nothing then what I would do is return it and but it again somewhere else to make the return policy longer, and if you can't hold out then just return it
[Nexus 7 (2013) Q&A] Coronado is dead:
Well I guess they have 2 days then lol.
[Nexus 7 (2013) Q&A] Coronado is dead:
People who have had the multitouch issue: do you have a case on? Does having a case on and holding it give the same errors as on a table?
[Nexus 7 (2013) Q&A] :
I have a case on and it doesn't help I still have issues
[Nexus 7 (2013) Q&A] Coronado is dead:
I get that the case wont help. Let me rephrase.

Is having a case on the Nexus and holding it in your had the same as laying a bare Nexus on a table? Or is it fine with you holding it in your hand in the case, as if you were holding a bare Nexus in your hand?

Does that question make sense?
[Nexus 7 (2013) Q&A] :
Makes sense. Depends on the case it doesn't make it any worse for me at all but each device differs
[Nexus 7 (2013) Q&A] Coronado is dead:
So holding it in your hand in the case, you still get touch misses? As long as I am holding my bare Nexus all touches register.

And thank you for all the replies.
[Nexus 7 (2013) Q&A] :
Holding it in your hand will help a lot but there will still be slight errors. I can't even notice the errors anyways as my device was never updated and I installed a custom ROM the day of getting it, the grounding thing helps but each and every touch sensor is calibrated a little differently , Google will fix this I'm sure.
[Nexus 7 (2013) Q&A] trvbone:
Just in case I have not said I had the one finger touch problem when the tablet is sitting on a pillow or bed, until I removed my screen protector.
[Nexus 7 (2013) Q&A] fedreta:
Anyone find downloading the recent cyanogenmod doing anything to fix it?
[Nexus 7 (2013) Q&A] :
Nope. I'm on it. Its a firmware and kernel issue
[Nexus 7 (2013) Q&A] fedreta:
I'm a noob, does that mean it'll just be up to google to release an update fix for it or a hardware thing?
[Nexus 7 (2013) Q&A] :
Up to Google to release a fix for it
[Nexus 7 (2013) Q&A] fedreta:
Oh, did google say it's something they have to fix or is it just assumed? Since I have a few more days to switch out/get a refund if it is hardware
[Nexus 7 (2013) Q&A] parmend:
I was wondering the same if a case would block grounding . I was wanting to get a case but was afraid it would block grounding.
[Nexus 7 (2013) Q&A] LoopDoGG79:
It should work flawlessly, with a case or not. Grounding should be the last thing you worry about.
[Nexus 7 (2013) Q&A] omnius1:
yep. I'm pretty hot right now because I've had two defective units with this in a row now. This one's getting returned, not exchanged. I'm done with the Nexus tablets for good now. Google needs to tighten up QC on their OEM partners in a big way.
[Nexus 7 (2013) Q&A] fedreta:
Currently calling their support to see if they know if this is firmware related and can just be fixed in a pushed update or if this is hardware related (Although I kinda doubt hardware, it would be really awful for them if it was actually hardware, there are so many people having troubles)
[Nexus 7 (2013) Q&A] sfhub:
Does anyone know why the google forum topic on this issue seems impossible to load. It keeps complaining about an out of control script on the page and I see the CPU usage for the browser is pegged.

http://productforums.google.com/forum/#!category-topic/mobile/android-devices/W0Hfkq8hf-c

This is on mozilla on desktop.
[Nexus 7 (2013) Q&A] toxicpaulution:
Because you are using Firefox? Lol
[Nexus 7 (2013) Q&A] phazerorg:
I decided to play the Nexus lottery today and exchanged mine. The new one seems to have pretty much no touch issues, but I'm still on JWR66N and haven't updated yet.

The new tablet also has much less light bleed than my first one, but this one has some dead pixels (first one was perfect) and the GPS issues other people are reporting (GPS was fine on the first one). So far it looks like I've traded one set of issues for a different set, so this one will be getting exchanged too.
[Nexus 7 (2013) Q&A] parmend:
What's your build date?
[Nexus 7 (2013) Q&A] phazerorg:
2013.07, which is the same as the first one I had.
[Nexus 7 (2013) Q&A] jjjsong:
My first one had touch issues and I exchanged it.

The second one seems pretty solid and almost no touch issue (the multi touch issue rarely shows up) but it had a defective volume up button...

Now it's returned and I'm done with nexus 7 for a while.
[Nexus 7 (2013) Q&A] aimfire72:
It's assumed by some, but no word from Google yet, other than they're looking into it. I exchanged & returned 3 faulty units... If the issue gets resolved either by software update or hardware revision, then I might buy it again.

Sent from my Nexus 4
[Nexus 7 (2013) Q&A] JayBomb999:
"Google" did reply on the product forum.

http://productforums.google.com/forum/m/#!category-topic/mobile/android-devices/W0Hfkq8hf-c
[Nexus 7 (2013) Q&A] bckrupps:
just exchanged mine at bestbuy and it is running perfect. i have not updated the software yet. rooting it now and then im gonna do a backup on the old software, update to the newest build and see what happens. also my original one had 6/2013 as a build date and the new one has 7/2013 if that matters any.

---------- Post added at 02:10 AM ---------- Previous post was at 01:40 AM ----------

Okay again exchanged my nexus. rooted and backed up original software and my tablet had no touchscreen issues. did the software update, root yada yada and what do you know touchscreen issues when the tablet sat the same way in a case on my pillow. I really think this can be fixed with software based on my experience anyway im staying on the old firmware as of now. I have read that others had troubles on the original firmware so ymmv but there is a significant difference between the two software versions on mine. hope this helps
[Nexus 7 (2013) Q&A] JayBomb999:
Are you saying that you were able to revert to the old build and again enjoy better touchscreen performance? The others who have attempted this said the touch screen problems persisted even after the reversal.

Also, in my experience, Netflix requires the latest build to work. So hopefully that doesn't hinder you.
[Nexus 7 (2013) Q&A] bckrupps:
i havent had any trouble since reversing it. gonna try paranoid android now as that is my rom of choice
[Nexus 7 (2013) Q&A] aimfire72:
Yeah, they did... and they said they're looking into it - that's what I said. :rolleyes:
[Nexus 7 (2013) Q&A] JayBomb999:
Sorry. I guess I misread your message.
[Nexus 7 (2013) Q&A] bckrupps:
just flashed paranoid android from the original build before the over the air update and no touch screen problems at all. i think i more confused now. that and my girlfriend has been giving me the evil eye for an hour. she dont understand how this community thing works lol
[Nexus 7 (2013) Q&A] LoopDoGG79:
And she never will. ;)
[Nexus 7 (2013) Q&A] JayBomb999:
Tell your girlfriend to forgive me, but I just want to make sure I understand the sequence of events:

- running the JWR66N build you had no issues

- You rooted and backed up

- This is where I get confused, you updated while rooted?

- touch screen issues make their appearance

- you restore your back up to JWR66N and touch is fine again?

- then installed PA and still all is good? Is this a JSS... Build of PA?
[Nexus 7 (2013) Q&A] :
So I'm pretty sure installing a ROM doesn't upgrade your firmware to jss that's different.
[Nexus 7 (2013) Q&A] omnius1:
this can be fixed with an OTA. I'm on my 3rd device and YAMTT showed no issues until

after

I installed build JSS15J. That means they can fix it with an OTA.
[Nexus 7 (2013) Q&A] bckrupps:
On step 3 of your list no I unrooted and locked ect using the tool in another thread and started from scratch. Updated and had issues on jss build. Restored to jwr and flashed newest build of pa and its going great. Essentially I went from jwr build to newest pa build and tested jss in between if your following me.
[Nexus 7 (2013) Q&A] JayBomb999:
Thanks. Are you able to install Netflix?
[Nexus 7 (2013) Q&A] bckrupps:
I am assuming people updated to the newest build out of the box and that may be the issue. Lots of these Roms I assume are based off the newest build I assume. I'm was just trying to tell people how it worked for me as my first one was terrible. It would have taken me an hour to type this on the old one lol

---------- Post added at 03:41 AM ---------- Previous post was at 03:39 AM ----------

I have Netflix installed as I transferred my titanium backup folder from my previous tablet and restored. Not sure if it would install straight up
[Nexus 7 (2013) Q&A] JayBomb999:
Yes. I believe they can be based off the same source code though {code which was the source of the JSS15J build). Effectively, this would also contaminate custom/modified builds.

At least to the best of my understanding.
[Nexus 7 (2013) Q&A] bckrupps:
Ultimately it seems to be a software based problem in my opinion. I am happy to be on pa with no touchscreen troubles. It was worth the effort although a pain to do it the way I did to get a good result though but who knows YMMV. My advice is don't update if you exchange no matter what :)
[Nexus 7 (2013) Q&A] JayBomb999:
I had reached the same conclusion. I had planned to stay on the old build and I did for days, but Netflix (a primary use case for me) insisted I upgrade to work. As soon as I did, jumpy pinch to zoom along common axes was back... Again.

I will investigate reversion and perhaps try your method.
[Nexus 7 (2013) Q&A] LoopDoGG79:
I've read reports of the multi touch issue occurring even on tablets that don't upgrade and it happening like a day or so after purchasing the N7. If you can, can you report in 24 hours and see if the issue had not came back?
[Nexus 7 (2013) Q&A] bckrupps:
Sure. I'm off tomorrow so I will be putting some serious mileage on it tomorrow
[Nexus 7 (2013) Q&A] sfhub:
In my opinion the issue is in different variances in hardware, however the software can be modified to minimize or eliminate the issue.

I have tested a unit that was on JWR66N and never upgraded to JSS15J and it showed the spasdic multi-touch. I had another unit where it was on JWR66N and it was much more difficult to get the spasdic multi-touch to show up, but it was there. I let that one upgrade to JSS15J and it was easier to trigger the spasdic multi-touch.

I also had one unit which had no spasdic multi-touch at all and it continued that way when upgraded to JSS15J.

I have no idea how much they can compensate for this behavior in the kernel/drivers. Perhaps the ones that have it bad in JWR66N will be too far gone for compensation to alleviate.
[Nexus 7 (2013) Q&A] LoopDoGG79:
With sporadic build quality like this, it's going to be tuff to come out with a solution that will only involve a software fix. If anybody can do it, it's Google. :thumbup:

Sent from my Galaxy Note 10.1! :D
[Nexus 7 (2013) Q&A] sfhub:
If you don't know the cause of the problem it is hard to make a statement like that. It could be as simple as sending more power to some component like the multi-touch layer or it could be more complicated where compensating for one thing makes something else worse.
[Nexus 7 (2013) Q&A] bobafuzz:
Today I decided to flash faux kernel on my N7 that has no real issue with multitouch, I undervolted by -75mv and noticed that my touch is dropping out while playing hungry shark 3. Fired up YAMTT and noticed the same issue just like my previous unit, multitouch going crazy when crossing x or y axis. Turned off UV and issue went away, touch screen back to normal. I don't know what that means but it maybe related to how much voltage being deliver to the touch controller.
[Nexus 7 (2013) Q&A] Coronado is dead:
You should share that here:

https://productforums.google.com/forum/m/#!msg/mobile/W0Hfkq8hf-c/Y6aoX36AcHcJ
[Nexus 7 (2013) Q&A] berardi:
I went through 4 devices and I have finally found one without erratic touch screen and without GPS issues.

If it is a software issue, how do you explain 4 identical software installs exhibiting issues different In each case? Now I finally found one without issues and I am doing nothing different software wise.

I would not be so trusting in google finding a software fix.
[Nexus 7 (2013) Q&A] Coronado is dead:
Minute differences in touch screen calibrations affected by voltages. Maybe for GPS too.

Or gremlins. Personally, I like gremlins.
[Nexus 7 (2013) Q&A] sfhub:
You misunderstood what I wrote.

There are differences in the hardware obviously. Even when things are working properly/normally there are variances in the hardware.

The question is whether those differences can be accounted for in the software or not. I make no claim that in this case it can or can't be addressed in software.

I do give an example of a (hypothetical) situation where it could be addressed in software.

I did point out that if you don't know the root cause of the problem you can't really make a statement that this can't be addressed in software.
[Nexus 7 (2013) Q&A] **Menos**:
Today I spent a little test. First I tested the problem with the screen holding the tablet in his hands and got a problem. Then put the plate on the floor and the problem disappeared. I do not know what it means but it looks like the problem of calibration.
[Nexus 7 (2013) Q&A] LoopDoGG79:
True. But with people reporting varying degrees of this same problem, from impossible to use to not experiencing it at all, it's sign that the build quality was not constant. A lack if information is a hindrance though. I am not familiar how ASUS works. Does it build from many different plants? Were there different batches made? Really hoping this works it self out quickly.
[Nexus 7 (2013) Q&A] berardi:
Bottom line, it could be software fix is possible or maybe a hardware fix will do it, who knows. Or maybe the device is critically flawed. It has happened before even sacred IOS device. (Bumper fix even left the flaw)

Do you trust Chinese factory workers to make good products? I don't. Do you trust Google to own up to massive hw faults? I don't.

Try your luck waiting for Google as return period expires we can't do anything

---------- Post added at 04:40 AM ---------- Previous post was at 04:30 AM ----------

Man..I have an issue with my new device (4th replacementt).

Worked fine for hours perfect....but now massive double key presses.

This may be my last straw. 5 replacements all something wrong.

BTW they each had different color charging cable makes me think different factory
[Nexus 7 (2013) Q&A] aimfire72:
At my wits end here... been driving around, exchanging & returning tablets for over a week now. My scorecard:

Nexus 7

#1 - bad touchscreen problems, some games to the point where they were unplayable.

#2 - sunken in power and volume buttons, 2-3mm gaps on both sides of tablet

#3 - strong light bleed on top edge

Gave up and decided to go for Note 8...

#1 - awful yellow blob of light bleed on top right 1/4 of screen

#2 (current) - two dead pixels and yellow tint on bottom left of screen.

Can't anyone make a decent Android tablet?? Jeez... Gonna return the Note 8 for good and try again with the N7 :rolleyes:

---------- Post added at 03:51 AM ---------- Previous post was at 03:36 AM ----------

I also have to wonder if it's a critical flaw - to get the device to this price point, they had to have cut corners somewhere. Holding it in your hands acts as a conductor, maybe this was their way of cutting those corners, as this is how the device would be mostly used? I hope not.

As for the "time delay" on the touch screen issues after using it awhile... Could be hardware related where after awhile of physically tapping and touching the screen, something gives way. Or, after awhile, the heat build-up is doing something. Or, after the battery starts to drain and hits a certain point it begins to send less power to the screen digitizer... All just guesses, I have no idea.
[Nexus 7 (2013) Q&A] notoriouspk:
since everyone is guessing lemme guess too :p a software update will fix touch issues n gps problems soon.
[Nexus 7 (2013) Q&A] **Menos**:
So, is it hardware or software problem?
[Nexus 7 (2013) Q&A] JayBomb999:
50 pages have been dedicated to that question. If you look through them, you'll see there is no definitive answer.

It's likely that hardware inconsistency and/or quality plays a role. It also seems that software can greatly mitigate or eliminate the issue.

Ultimately, I think a software patch will fix it for many... If not most.
[Nexus 7 (2013) Q&A] Markdek:
Is there a good, dependable Android 7 or 8" tablet out there worth buying, instead of the N7 2013?
[Nexus 7 (2013) Q&A] delfin2003:
LG will be coming out with their own HiDef tablet next month

---------- Post added at 03:43 PM ---------- Previous post was at 03:43 PM ----------

Concur
[Nexus 7 (2013) Q&A] Krunk83:
Mine seemed to be hardware. After flashing several ROMs my touch issues still existed. Got it replaced and my new one works great. Not sure why people aren't just replacing them.
[Nexus 7 (2013) Q&A] Coronado is dead:
Because that could still be a calibration issue is all. My screen is perfect otherwise and I'd rather not play the screen lottery if I don't have to.
[Nexus 7 (2013) Q&A] parmend:
Tested mine with a paper clip and yamtt. Put nexus on a table and two fingers on screen and it went crazy . left my fingers on the screen and touched a paper clip against the metal on the charging port and the jumpyness went away took the paperclip off and it started jumping again . I hope that can be fixed with a software update
[Nexus 7 (2013) Q&A] omnius1:
You might not like my answer to this. To my knowledge there's only one tablet maker with a consistently high scorecard for reliability as well as the easiest warranty care, but it's not android :(
[Nexus 7 (2013) Q&A] **Menos**:
All firmware that are currently available are based on JSS15J. So they will have same problems with touchscreen.

Similar situation with kernels.
[Nexus 7 (2013) Q&A] LoopDoGG79:
What about the note 8.0? I could get at Costco for 190?

Sent from my Galaxy Note 10.1! :D
[Nexus 7 (2013) Q&A] Speedy Gonzalez:
yeah never mind I thought it was fixed but the problem come back and the tablet went back to bestbuy :(
[Nexus 7 (2013) Q&A] berardi:
This makes the most sense by far out of any explanation that I have heard.

ADDITIONALLY it makes even greater sense why some units exhibit no issue and others are crippled. For example, undervolting CPU on many devices - some can tolerate a certain level, while others will become highly unstable with identical circumstances simply due to natural manufacturing variances (not even defects).

Also - don't they claim this device has more battery life than the original meanwhile it has a smaller battery And now a quad core CPU? That takes tweaking of some sort for sure. Maybe they went too far. If that was the case, a kernel tweak would fix things right? Many XDA developers have done that in the past for performance and battery advantages.

Great post / idea
[Nexus 7 (2013) Q&A] :
Someone could try to overvoltage their kernel and test it
[Nexus 7 (2013) Q&A] fedreta:
Trying to figure out how to install Kernels like Franco or Motley so I can increase the voltage a bit but I have no clue on how to do so
[Nexus 7 (2013) Q&A] bckrupps:
How are you getting it that cheap? I will buy one now lol
[Nexus 7 (2013) Q&A] bobafuzz:
Download kernel onto SD partition, either temp boot into TWRP or flash TWRP in fastboot, install kernel from recovery, wipe dalvik and cache.
[Nexus 7 (2013) Q&A] fedreta:
Alright I guess I'll try it when I get home, have you tried increasing the voltage and seeing how well the multitouch is? If it's fine already, try decreasing the voltage little by little and see if the problems start cropping up
[Nexus 7 (2013) Q&A] Lolento:
To those who have this issue (phantom touches),

I suggest to return or exchange the tablet, Best Buy just came back in stock recently. I made my exchange and do not have this issue anymore.

To those who are saying that they'd made 6-7 exchanges, I guess I'm very lucky because I only did one.
[Nexus 7 (2013) Q&A] bobafuzz:
My multitouch is working ok, I undervolted by 75mv and it went crazy. You can really tell when playing games with onscreen joystick, I was playing hungry shark 3, touch would become unresponsive and not registering until I lift my finger and touch again. Undid the undervolt and it went away but not completely, every once in a great while touch would dropout, no issue in YAMTT however.
[Nexus 7 (2013) Q&A] fedreta:
Ok, so your multitouch was working fine then you undervolt and then it goes crazy. Is there a medium point to it?

Like have you tried reducing it by 10 then checking YAMTT, another 10 YAMTT ect to see if there is a progression of the touchscreen issues? Because I think we might have discovered the exact culprit, the recent update undervolt a little too much and just a kernel update would fix it
[Nexus 7 (2013) Q&A] :
Why doesn't anyone overvolt? Jeez I guess I'll do it myself haha
[Nexus 7 (2013) Q&A] fedreta:
Tell me what happens when you overvolt, does multitouch problems go away?
[Nexus 7 (2013) Q&A] bobafuzz:
Overvolt can be dangerous, if you're not careful, too much voltage can cause more heat and kill cpu.
[Nexus 7 (2013) Q&A] :
I'll do it soon I haven't yet

---------- Post added at 02:05 PM ---------- Previous post was at 02:04 PM ----------

I know. This thing is going back anyways I can't deal with it
[Nexus 7 (2013) Q&A] cyberprodigy:
Just tried overvolting by up to 200 mV. Didn't change anything. Still have a jumpy touch when the second touch crosses the X axis of the first touch. Has anyone come up with a surefire fix yet?
[Nexus 7 (2013) Q&A] Coronado is dead:
Did you try the bed/desk/pillow test to see if single touches are missed when overvolted?