yashsingh1/xdaforums huggingface dataset:
[Nexus 7 (2013) Q&A] dehsA:
I've been noticing the jumpiness more and more as well as the random reboots (not sure whether the issues are interconnected but I do notice that reboots tend to result from weird jumpy multi-touches. But even single touches like pressing an area of a webpage is jumpy. Thinking of selling it here (Bangkok, Thailand) and make some profit but then there is no other 7" Android tablet that I really want.
[Nexus 7 (2013) Q&A] karandevilocs:
hey guys i got the new nexus 7 today and i tested some stuff to see if they work properly !

when i set it up it was on JWR66N and i tested touch / gps / wifi by YAMTT / GPSTest / WifiAnalyzer and multi touch was ok and wi-fi was superb BUT gps didn't work at all didn't even received the gps signals ..

the i updated to JSS15R and tested stuff again this time MULTITOUCH bug appeared (jumpy multi-touch) / wi-fi was the same / and gps improved and received signals but it didn't lock on any of them ...

my question is that should i try some TRICKs or stuff to see if my multi-touch work on latest one OR should i download JWR66N and reinstall it?!

and the 3rd option to send it back...

PLEASE Help ...

UPDATE: i restarted the tablet and now the buggy touch is gone ... is this a temporary thing ?!

+ screenshot of YAMTT on Nexus 7 :

+ screenshot of YAMTT on S4 :

as you can see the "P" on my s4s is 1.000 and on nexus is something less ! what is that ?!
[Nexus 7 (2013) Q&A] Szuri21:
Screen issue provided by gyroscope or is a grounding issues

My Nexus 7 LTE have touch screnn problems.

Missing single touch and registering ghost touches.

I observed that when the tablet is on a flat surface to have problems with the touch. When I hold the tablet in hand everything works well. Its a problem with gyroscope? Or is a problem with grounding issues?

youtube.com/watch?v=EgM5HZuzKN8&hd=1
[Nexus 7 (2013) Q&A] tni.andro:
P is pressure, but I don't think there are a lot of apps using it.

If it bothers you, there is a calibration file:

/system/usr/idc/elan-touchscreen.idc

You could change the 'touch.pressure.scale' value to '0.01'.
[Nexus 7 (2013) Q&A] gadzooks64:
I just got my N7 back from service. I was having horrible touch issues and mediocre battery life.

The fake touch test apps all registered bogus touches pretty much non-stop before I sent it for repair.

I tested it with one app and so far no phantom touches.

I just finished charging it. I am hoping this will be the end of my problems but I will reserve judgement until I've had a chance to really use it a lot.

It is worth sending in a defective unit. If mine starts acting up again I will definitely send it back.
[Nexus 7 (2013) Q&A] sfhub:
Make sure you are on the latest JSS15R (or JLS36I if you are on LTE) software before declaring victory.
[Nexus 7 (2013) Q&A] trvbone:
What steps did you take to send it in?
[Nexus 7 (2013) Q&A] gadzooks64:
You will have to file a claim with ASUS:

http://www.service.asus.com/#!consumer/csn9

You can chat or email them. They will give you instructions on where and how to ship it back to them. Once you have a RMA number you can check the status on line.

It can be confusing what product to pick. You need to select EEEPad and Nexus 7 (2013) from the drop down list.

I don't know if I ever had a S/N sticker on my tablet but it is long gone. I had the box it came in which also lists the serial number. When I got mine back they had stuck a sticker on the back with the serial number on it.
[Nexus 7 (2013) Q&A] gadzooks64:
And it looks like I will be sending my tablet in again.

The Wi-Fi will drop and reconnect repeatedly and sometimes not even re-connect at all.

I still have issues with the touch. My unit now passes the multi-touch screen tests but I still get touches that don't register - the screen will show the touch but the software doesn't respond; the screen still locks up every now and then, I have to wait 10 seconds or so for it to work again; some apps register multiple touches that open the same window multiple times forcing me to back out of the same window many times to get back to where I want to be.

There's something seriously messed up with this thing. Sigh.

---------- Post added at 10:09 AM ---------- Previous post was at 10:08 AM ----------

And it looks like I will be sending my tablet in again.

The Wi-Fi will drop and reconnect repeatedly and sometimes not even re-connect at all.

I still have issues with the touch. My unit now passes the multi-touch screen tests but I still get touches that don't register - the screen will show the touch but the software doesn't respond; the screen still locks up every now and then, I have to wait 10 seconds or so for it to work again; some apps register multiple touches that open the same window multiple times forcing me to back out of the same window many times to get back to where I want to be.

There's something seriously messed up with this thing. Sigh.
[Nexus 7 (2013) Q&A] NekroWolfen:
For the love of all living beings, why even sending the device to Asus doesn't work? So it's something even them doesn't know how to fix it?
[Nexus 7 (2013) Q&A] stefan0x53:
New screen made issues worst

I had the same multi-touch issue, but I could live with them, but the most frustrating one was that it ignored some touches (2-3 in a hour of RealRacing 3 game-play with manual controls, enough to generate terrible frustration and lose hours of playing).

After updating twice without any update fixing my issue I have sent it in service.

After two weeks, while service in Romania expected new screen from ASUS, I received back with the screen exchanged; however, this time was ten times worst. I have sent it back in service and now they say that the issue is not reproducible.

I am pretty sure they have some batches of faulty screens and try to cover the issue, or worse, they don't know how to fix it.
[Nexus 7 (2013) Q&A] danvee:
Yep.

They still have no clue as to how to fix the effected ones.

There's a petition here: https://www.causes.com/campaigns/64142-have-google-address-the-high-defect-rate-of-the-nexus-7-13 that might help to force their hand to help us.

It may not do any good, but you never know...
[Nexus 7 (2013) Q&A] drelouis:
Touchscreen issues Dec 2013

I've just recently bought the Nexus 7 (2013) and it seems like there are still issues with it in December, at first I thought the screen would warm up and become more sensitive after a day or so, but I am still having issues with it. YAMTT (Yet Another Multitouch test) that was tried out by another user in the forum, only to discover a complete vertical and horizontal line of unresponsiveness on the screen! This is far beyond what I figured it was, does this warrant an immediate return?

P.S. I've attached a screenshot of the results from YAMTT, please feel free to advise!
[Nexus 7 (2013) Q&A] LoopDoGG79:
Have you updated to kit Kat? Many have reported improved multi-touch after upgrading.
[Nexus 7 (2013) Q&A] brapicoco:
Same case with z1

I see that the software update did not do much about the touchscreen of the N7. All my hopes are gone since if N7 was not fixed then my Z1 also since it has a touchscreen problem that is also rampant and fails to register touch.
[Nexus 7 (2013) Q&A] edoson:
I'm still having problems with a nexus 7 bought in November. I see that this topic has not been updated for quite a while, does that mean that the problem is solved? Should I try rma/send to fix?
[Nexus 7 (2013) Q&A] player911:
Latest Android is 4.4.2 and I think fixed the erratic behavior for the most part. Most of the discussion is in SFHUBs Touchscreen Fix Patch thread where everyone is posting their findings. Its still pretty active.
[Nexus 7 (2013) Q&A] notmilk:
no the replacement i got today doesn't do that, the other one did, less severe than yours tho. this one is perfect in terms of touchscreen behaviors except the light bleed
[Nexus 7 (2013) Q&A] splitpea:
That video totally explains why the typing is so erratic at times.
[Nexus 7 (2013) Q&A] eyecon82:
mine doesn't...i can put all 5 fingres on there and rotate them in 360 degrees and no issues

yea mine is perfect besides the light bleeding...
[Nexus 7 (2013) Q&A] notmilk:
Problem again!!!

Guys, I take my word back, I think it is firmware related. I had this replacement today, everything was perfect like i said, played for hours without any problems, tested with YAMTT, all good. But I just installed this 51mb update, and the touchscreen is fuked now. multi-touch goes crazy like all my other ones.....WTF!! Is there anyway we can revert back??? What is the old revision name?:mad::mad::mad::mad:
[Nexus 7 (2013) Q&A] bobafuzz:
Looks like it is software related after all, I was all ready to go to bestbuy and grab another one too, even have my nandroid ready. I guess I'll wait. The first update is JWR66N, don't know how much that will help you though, unless someone was able to dump it before updating to the latest.
[Nexus 7 (2013) Q&A] slyd0997:
How do you know it's a software issue? I have not seen it reported by Google or anyone as being software or hardware. Id like to know with certainty that's it's software and then I will calm down.
[Nexus 7 (2013) Q&A] eyecon82:
Plug it in and see if it occurs...
[Nexus 7 (2013) Q&A] slyd0997:
Of course it occurs when you plug it in. What are you taking about?
[Nexus 7 (2013) Q&A] Krunk83:
I've had the touch issues throughout all of the updates.
[Nexus 7 (2013) Q&A] Osiris19:
I just experienced this. Never had this issue until now. Played dead trigger before and it was completely fluid and smooth. I went to play 5 minutes ago and the camera was so jumpy when I place my finger on the screen. It's never done this before. Would it be worth exchanging or no?
[Nexus 7 (2013) Q&A] splitpea:
Okay, just tested this on my old 2012 N7 and my new 2013 N7 using YAMTT and found clear differences.

Old N7 on 4.3 build JMR66V - no problems, perfect multi touch crossing axis.

new N7 plugged in to USB power - multi touch is fine according to YAMTT but I am still getting constant repeat keys on the keyboard, it is nearly unusable.

new N7 not plugged in - multi touch in YAMTT shows repeated multi touch ghost taps and shows 3rd & 4th touch when I use two fingers. Repeat characters with keyboard still happen and it makes me nuts.

I am starting to hate this new N7. The keyboard is so screwy that I can't stand writing emails on it...
[Nexus 7 (2013) Q&A] Krunk83:
Why don't you just exchange it?
[Nexus 7 (2013) Q&A] picachux:
So far Nexus 7 has been extremely underwhelming.

I've been having weird issues with any keyboard used, Double letters, taps no where near I have my finger. I just thought maybe the apps weren't compatible with 4.3. Then trying to move an icon from the app list to a page is like my finger is drunk. I've been playing Dead Trigger and the I have my thumb on the screen, the virtual dpad shows up and all of a sudden it jumps above, below, sideways or offscreen without my thumb leaving the screen.

This plus the junk 5hrs battery life is leaving a sour taste in my mouth. Already set up a Exchange with Amazon but they have no idea when that will actually happen. :silly:
[Nexus 7 (2013) Q&A] JayBomb999:
The screen/touch issues... OK. However, what is this about 5 hour battery life?? Is that 5 hours of Dead Trigger?
[Nexus 7 (2013) Q&A] picachux:
No thats 5hrs of Chrome, Falcon Pro, Instagram, G+, Words With Friends and Draw Something 2. I'm trying Boat Browser today and it's not faring that much better than Chrome to the point that it would get me 7-10 hrs of On Screen Time I'm seeing.
[Nexus 7 (2013) Q&A] eyecon82:
People are saying the issue disappears while device is plugged in and charging
[Nexus 7 (2013) Q&A] THS1989:
I can confirm multitouch issues
[Nexus 7 (2013) Q&A] splitpea:
Because according to most other people posting on here it still occurs with the replacement devices. And the fact that the ones with 66n don't have the issue but as soon as they update to js15 the problem appears leads me to believe this will be fixed by an update.
[Nexus 7 (2013) Q&A] jamrc:
I feel it's the firmware.

After taking back my first N7 from Staples for this issue I thoroughly tested the new one with YAMTT and could not reproduce the issue.

I then downloaded and installed the JSS15J firmware release and immediately experienced the issue and confirmed this with YAMTT.

Hopefully this will get fixed exceptionally soon otherwise I'm going to have to take my N7 back soon. :'(
[Nexus 7 (2013) Q&A] Speedy Gonzalez:
I guess a lot of people don't want to flash ROM's but for now that is the only way to fix this issue :p
[Nexus 7 (2013) Q&A] JayBomb999:
This is XDA. I'm pretty sure most of us are quite comfortable with flashing a ROM. However, until this comment, I've seen absolutely nothing to suggest that doing so would fix the problem. Are you saying you have experience or evidence that a cutom ROM fixes this?
[Nexus 7 (2013) Q&A] Speedy Gonzalez:
Exactly try for yourself I was going to exchange my N7 because I flashed clean rom and I was having the same touch issues but wiping the whole tablet back to stock and flashing CianogenMod fixed it ;)
[Nexus 7 (2013) Q&A] JayBomb999:
...I want to believe...
[Nexus 7 (2013) Q&A] Speedy Gonzalez:
Just one way to know...
[Nexus 7 (2013) Q&A] husker91:
Just tried and it doesn't work. Got double clicks typing in my wifi password during setup
[Nexus 7 (2013) Q&A] daijizai:
Not sure personally. I replaced my unit and the problem went away as did the oil slick that was on the rear of the device...
[Nexus 7 (2013) Q&A] Speedy Gonzalez:
well too bad, it did to me if it wasn't I'll be on bestbuy exchanging mine

did you wiped the whole tablet before flashing?
[Nexus 7 (2013) Q&A] eyecon82:
Did you update again?

And the software definitely wasn't causing the oil slick ;)
[Nexus 7 (2013) Q&A] THS1989:
Got a replacement from staples. Good now. Haven't done thee 50mb update.
[Nexus 7 (2013) Q&A] Synister:
if you end up doing the update let us know if the issue returns
[Nexus 7 (2013) Q&A] THS1989:
I'm not gonna update it lol

Let Google/Asus get their **** together first.
[Nexus 7 (2013) Q&A] JayBomb999:
JMR66V System Dump?

For those that are (wisely) sticking with the JMR66V build, I wonder if you'd be willing to do a system dump? It would be very informative if the poor schulbs who updated to the latest build could revert back to JMR66V. That would give us a definitive answer as to whether or not it's "the firmware".

I ask this having absolutely no idea how to do it. :)
[Nexus 7 (2013) Q&A] notmilk:
a system dump would be a great idea for those who updated the newest firmware. can someone please do this??
[Nexus 7 (2013) Q&A] daijizai:
Yup all OTAs and no problems
[Nexus 7 (2013) Q&A] Lexord:
I can confirm its not software related, just went to best buy and staples and tried the ones people can test, and not a single problem, it was the lastest build (J15).. so yea, exchange yours asap ;)
[Nexus 7 (2013) Q&A] bobafuzz:
Was it plugged in? I know floor models are usually plugged in, many have confirmed that if it's plugged in, there is no issue.
[Nexus 7 (2013) Q&A] Lexord:
Best buy one was plugged, so i unplugged it :P and no issues at all
[Nexus 7 (2013) Q&A] NotARobot91:
I plan on buying one soon. Where do I check the build? Is it in the settings of the device or somewhere on the box?
[Nexus 7 (2013) Q&A] Lexord:
Settings>About tablet>Build number (the lastest one is JSS15J) :) I would recommend to check the touchscreen asap, so you can exchange it if it have those multitouch issues :) Good luck :good:
[Nexus 7 (2013) Q&A] JayBomb999:
4th time's a charm

OK guys, I actually bought a fourth one. I know, I know. I'm an idiot. However, I asked the sales clerk to allow me to open and demonstrate it in the store before I bought it.

I'm still on build JRW66N and the multitouch and keyboard work perfectly. In fact, so far it's the smoothest experience I've ever had (on an Android device that is). I've been here before though, so I'm cautiously optimistic.

What is interesting, is that I experience the same behaviour in YAMTT that I saw on my last device. It's difficult to describe, but what happens is that when the two axes come close to intersecting, they pull toward each other. Like magnets. On my last device, this was the only multitouch hiccup I found, but it appeared to be enough to cause "jumpy" pinch to zoom in all applications. The only difference (other than the device) was that it was on the latest JSS15J build.

I have attached 3 screen captures. Two of them simply show the difference in touch pointer linearity between builds when pulling to expand (opposite of pinch to zoom). The other screen cap shows what I call the "magnet effect" when I pinch to zoom. Again, I tried to illustrate that when pinching (or pulling), the points attract each other when the axes approach crossing.

TL;DR The touch pointer linearity appears to be much better on a device running build JRW66N compared to a device running JSS15J. Who's gonna help me make a proper system dump?

So, in the interest of getting this sorted, I am willing to do a system dump of build JRW66N. I just need sometime to tell me how. Anyone? :)

J
[Nexus 7 (2013) Q&A] Lexord:
Well.. you could upload a backup, made by twrp :] That seems to be the easiest way
[Nexus 7 (2013) Q&A] bobafuzz:
After doing a TWRP backup, you can try upgrading to the new JS build and see how they compare. You can always flash back your backup.
[Nexus 7 (2013) Q&A] camilozano98:
Back up of 66n

I had the 16 gb version with the multitouch problems, I got a new 32 gb and stayed on 66n. Turned out the multitouch worked perfectly, even unplugged. 66n was working fine (execpt for GPS problems). I made a TWRP backup of the system and boot (Google Drive), so you guys can try it out. But I'm beggining to think it's a hardware problem, as I've upgraded to J15, and I'm not experiencing any problems (GPS works too) problems.

To flash the backup, extract the folder onto your TWRP backup folder and restore or you could individually flash the .win files through fastboot.
[Nexus 7 (2013) Q&A] JayBomb999:
This is probably a silly question, but can you restore a backup for a 32GB device to a 16GB?
[Nexus 7 (2013) Q&A] camilozano98:
I'm not sure, I believe not. Although if something does go wrong use this One Click Factory Restore
[Nexus 7 (2013) Q&A] bobafuzz:
Reading your post makes me wants to exchange mine ugh, I drew a circle using 2 fingers without lifting or deviating in YAMT paintmode, look at all the ghost touch in the middle :(. A few random green dots, indicating a third ghost touch point, show up too. Frustrating as hell.
[Nexus 7 (2013) Q&A] THS1989:
In the name of science, I did the update on the replacement (which was working perfectly)

Now this one is messed up too. Even single presses are not working sometimes... :(

DO NOT UPDATE YET....
[Nexus 7 (2013) Q&A] boykomac:
Guys,

Can you share serial numbers of "bad" and "good" devices (for what I read some do not have the issue even w/ the latest updates) - this way we can try to isolate the batch which has the issue and avoid it in stores.

B
[Nexus 7 (2013) Q&A] i486:
Bought mine 27 in Best Buy and so far never had any touch panel problems. Updated to the 15J build and still I can't replicate the issues with YAMTT.

However it appears that I have the same horrible light bleed on top as yours. Maybe the batches with the light bleed on top don't have the capacitive panel problems?!

The question is, I can live with some amount of bleed(used to that in my nexus 10) but not touch problems. I think I'm gonna keep this one.
[Nexus 7 (2013) Q&A] bobafuzz:
Well I downgraded mine to JWR66N and my touch panel is still sh*t, check out my vid https://www.youtube.com/watch?v=mu_vbnwl6Hw gonna exchange it tomorrow, hopefully I get one of these elusive light bleed one that a few of you are talking about, will be my 4th N7 from bestbuy, Asus really need to step up.
[Nexus 7 (2013) Q&A] mensaphone:
Just chiming in that I have the same problem.

In YAMMT in paint mode, my lines show up as a series dots unless I move very slowly. Is that right?
[Nexus 7 (2013) Q&A] bobafuzz:
The dots are normal, it's only a problem when you're getting dots on spot that you didn't touch.
[Nexus 7 (2013) Q&A] notmilk:
I have also tried to downgrade the firmware, still no luck. So far, I flashed every single ROM that's available for the new Nexus 7, and I found out each rom behave a little different when i try with YAMTT....I'm start to think if its hardware it should always be the same spot that would give you problem, but apparently thats not the case.
[Nexus 7 (2013) Q&A] thedeadletters:
I've had about 3 phantom press bouts since I got the device (launch day). When they occurred, I turned the device off and then on (after a bit of a struggle) and it's gone. I've been trying to reproduce the problem, but it hasn't come back yet.

The bouts occur while using Facebook or Chrome with the device on battery power using the device in my hands. I also tried to trigger it with "Dead Trigger" (sorry for the pun), since some said it happens during multi-touch situations, and it didn't happen.

Since this seems like a common issue, I'm unsure if I should go through the hassle of an exchange and risk getting a worse device. I'm really hoping it's a software issue since my 2012 Nexus 7 had problems fixed through updates.
[Nexus 7 (2013) Q&A] eyecon82:
Yes that's normal. Like the other users said, look for phantom dots
[Nexus 7 (2013) Q&A] NotARobot91:
condition arstia

I will like to thank you for the advice. On which build number to get. I tested it out and everything worked out. Thanks again sir.
[Nexus 7 (2013) Q&A] Lexord:
No problem bud. Glad to help :]

And btw, I see you are a new user, so: when you feel thankful, for some post or thread, just press the thanks button ;)
[Nexus 7 (2013) Q&A] kentondb:
My sister is doing her six month orientation at Best Buy and she said a Nexus guy (Google guy?) was there and she told him about hers and the three I've had (returned x2) and he said it would be fixed through a software update.

I asked her for more details and he said she read it on a forum and I said "Oh crap, he probably read it on XDA. I bet he's an XDAer like we are and is just speculating."

So, there is that!
[Nexus 7 (2013) Q&A] lopri:
Google Earth has that wonky problem on every Android device I've seen (and possibly iOS device, too) and likewise it is not a hardware issue.
[Nexus 7 (2013) Q&A] JayBomb999:
I disagree on both counts.

Google Earth is fine on an iPad. In my opinion, the experience is... a step down on my latest N7, but it's nowhere near as "wonky" as my previous devices. Also, ultimately you may be correct about the issue not being hardware related, but at this point, it's simply an assertion. If it were only software, I'd expect the problem to affect more people; Perhaps everyone. It certainly doesn't explain why my latest (4th!) N7, doesn't have any multi-touch issues whatsoever... so far.
[Nexus 7 (2013) Q&A] bobafuzz:
Are you still on the JWR66N? I'm going to exchange mine this afternoon hopefully I'll get a good one.
[Nexus 7 (2013) Q&A] canoo:
Picked up my N7 from a staples in Canada. I'm noticing a lot of erratic keyboard presses while not plugged in. Build JSS15J. It's acting up right now as I type this post. I've had to correct over 10 words. Really annoying. I have 14 days before I have to return it. I guess we'll see what happens. Love the tablet otherwise! Really don't want to have to return it...

Just did some testing while the device was plugged in. Problem still seems to be there. Multiple random key presses seem to be much fewer though...
[Nexus 7 (2013) Q&A] JayBomb999:
Yes. After your experience, I am afraid to update. :) I'm quite happy with the experience as is.

I'm gonna give it a few more days before I go to the latest build.