SGP311 Phantom screen touching :) - Xperia Tablet Z Q&A, Help & Troubleshooting

Hi all,
I just picked up the SGP311 today and I've noticed if I'm holding it in one hand from the side (landscape) I'll occasionally get lots of phantom screen touch events, almost like its bending under it's own weight and registering random touches. It doesn't seem to happen if I'm holding the tablet in two hands or resting it on my chest or lap, only if im holding it from the side in one hand
Has anyone else experienced this? I'll probably take it back tomorrow as faulty and take a replacement but im just wondering if this is a common problem with this tablet?
Ta!
Sent from my SGP311 using Tapatalk

Never happned to me what is ur tablet version? Have u ever update it?
Sent from my SGP311 using xda app-developers app

The model number is SGP311A1/B, after I first turned it on it completed the latest android update from Sony.
I'm pretty sure it's a faulty hardware issue, I can reproduce it quite reliably now. I was only really concerned if it was a common problem that might occur again in a replacement Other than that I love my new toy, I've been using the Asus TF101 for the last two years and it's been getting a little sluggish, the Sony is beautifully smooth in comparison
Sent from my SGP311 using Tapatalk

I came to this forum for an unrelated reason, but ran across this thread and I'd like to add my own experience with the OP's "phantom" inputs.
I tend to use the tablet on landscape with my left hand holding the tablet. My thumb is well within the black border but it seems the screen senses my thumb sometimes. At times I'm unable to scroll or drag properly (ie an opposing input is stopping the action) and if I move my thumb closer to the edge of the tablet, the problem seems to go away. I haven't bothered recreating the problem, it just occurs once in awhile and it hasn't gotten to the point of annoyance. I've only been using the tablet for about a week
I have the SGP311 and running stock 4.1.2

I have this problem in some 4.4 custom roms. And weird thing is that it sometimes registers touches even when tablet is on table and screen is of... So, is my tablet breaking down or is there anything else I can do?

Try to search for flex/flexing in this Forum.
It is a problem with the torsion, because of the flat design.

I had this exact problem after I unpacked my device, and was also worried abut this being a HW issue. I then upgraded to 4.3 (10.4.B.0.577) and haven't seen this issue since. I hope that means it's gone, but I've only been using this device for less than 2 days so it's too early to tell.

Related

Help with transformer prime issues

Hi
So I received my Prime a week ago and I noticed that the bottom right corner and the top right corner (the clock and application button) would randomly activate without me even touching the screen. At first I thought it was just a problem with ICS (may still be) so i waited a while and it steadily got worse until it hit a point at which it was happening constantly, I tried to wipe the tablet and the issue stopped for a while and then picked up again. I have not used a screen protector so issue will have nothing to do with to much application liquid, and I keep it in a zippered case whenever I am not using it so general water damage also shouldn't be an issue.
I could really use some advice or any tips you can give me I have looked around and there are a few others who are having the same problem but I haven't found one with a solution. I just want to know if its an ICS issue or a hardware issue that i will need to return the tablet for.
Thank you for any help you can give me

Still getting screen flickering issues after the latest update..

So the latest update did correct most of the banding issues but im still having some glitches when doing some things like half the screen will go away for a second them come right back, it does this very randomly. i also noticed this when playing games like shine runner, it will completely lock up. I included a video of what its doing, its weird in the video it would only do it by using the mouse but when doing it on the home screen if the recent apps filled up all the way to the top of the screen it will do it every time whether I use the mouse or touch. I have only had any of the problems since ICS so i know its probably a bug, anyone else having these issues?
http://www.youtube.com/watch?v=hxyTUc2cVTw
here is the issue that it still has with using the front camera, and using the silly faces feature.
http://www.youtube.com/watch?v=tSveBF1FNnA&feature=related
I have exactly the same issues.
Diamondback said:
I have exactly the same issues.
Click to expand...
Click to collapse
ok i figured it was a bug, its not too big of an issue but i would like to see it fixed soon.
i have this same problem also. it mostly occurs when i'm using youtube. hope they fix it soon because its annoying!
have the same issue it does it for me as well in Google talk, but YouTube is the worse i get a constant flicker for like 2 seconds.
Same for me too, I think I read that Asus stated it was some of the Prime's hardware drivers having incompadability issues with Ice Cream Sandwich (hence no problems with Honeycomb). Anyhow, I believe they stated that they should have an update to fix the issue in February...hopefully early Feb.!
Sent from my Transformer Prime TF201 using xda premium
..same here and only seen with Youtube..
Anybody pinged Gary Key or ASUS about it?
Regards
Ditto, only rarely and seemingly random but I feel it might be after I've just plugged or unplugged the dock.
Similar issue here though it manifests as very thin bands covering only the left 1 inch of the screen and only when scrolling up and down. This is not a constant problem,but not rare either. Shows up in either orientation. I also occasionally get artifacting usually in the form of a momentary white triangle when I use the task switcher button.
Both of these only started occurring after the most recent update: .11 on 1/17. Before that I had never noticed any screen problems.
Sent from my Transformer Prime TF201 using Tapatalk
I have this bug like you... This bug is on ICS. But my bug is like triangle on screen
Just wanted to be added to the list of users having this problem. The longer i have this tablet, the more issues i run into.
Hope a fix comes in the next few weeks, or Amazon get's it back.
Wanted to bump this thread because it seems like an issue some people are having, but it's not widespread enough that it's gathering the attention that the GPS/WiFi/Bluetooth issues are getting.
Personally I'm getting the diagonal screen flicker on the home screen, especially when pressing the recent apps button. Someone noted in a thread somewhere that this is most common when there are a lot of apps stocked up in there. It also seems to happen a lot more frequently when the dock is plugged in, even without touching the recent apps button - it just happens randomly.
Has anyone tried a factory reset to assuage this? That's probably my next step.
Edit: Come to think of it, I didn't notice any screen flickering until I plugged my tablet into the dock for the first time. Can anyone else with this issue confirm they've been using a dock? I might try something like a factory reset with full battery on both dock and tablet, maybe that'll make a difference...input, please, someone
Still having the same issues after todays update...
Ok, so...apparently, when I touch the recent apps button or when I click down on the mousepad, that's when the flicker occurs. When I just touch the touchpad without clicking, the flicker doesn't happen. What the hell? At least that's got me pretty well convinced that it's a software thing.
xzombiex66 said:
Still having the same issues after todays update...
Click to expand...
Click to collapse
Before the update everything was fine. No issue at all. It starts for me after the update. Also made my GPS worse. Wifi is the same (they just change the signal icon to look that my connection is full). So far no reboots or lockups.
Sent from my PC36100 using XDA Premium App
I have the screen flicker on
1. Youtube
2. When I am using the dolphin live wallpaper (one that came installed stock)
AS of now youtube is still crashing
Im having the same issue. I just bought my prime yesterday and noticed it while running the SKYRIM live wallpaper. I don't have a dock either so i can confidently say that's not the cause to MY problem (can't say for sure about others) and it happens when pressing recent app list or the settings in the bottom right corner.
Not functional threatening but visually annoying. I love the TFP though I have it next to me at work and im ITCHING to just play with the damn thing. We need more atttention to this.
I just started getting a screen flicker about every 10 seconds with a live wallpaper on. They must have "fixed" the problem with the last update.
Anyone found any solutions for this?
looks like the latest update fixed it, will know for sure after i put it through its paces.

[Q] [Xperia U] My touchscreen seems broken / acts very strange

I have got a (most likely) hardware related issue with the touchscreen of my Xperia U.
Some parts of the screen are not or barely responsive, which is very annoying when typing. I have to tap some letters twice before they actually work. (It's especially around the 'i', 'n' and 'e' when I have my keyboard open by the way.)
I was running stock Android GB and I'm now running stock Android ICS, after I updated my phone the problem was still there which is why I assume it's hardware related. There does seem to be a slight improvement though, but that's probably because ICS feels a bit faster (so far).
Like five minutes ago I noticed something very strange, when I put my finger near the 'N' on the keyboard, but not touching the screen itself, it kept touching it like 10 times a second, sometimes holding the touch so it would result in a ';', but that's not really relevant I guess. It stopped doing that after I turned the screen off and on again by the way.
Now I've downloaded a drawing app on my phone, to see if the phone would skip the parts that were responding bad, but that wasn't the case.
(I would send a picture, but I'm not allowed to send outside links as I'm a new user, sorry. )
There is a chance that this problem is caused by a kind of overpowered charger I had been using last summer, because when I plugged that in, the phone started doing the same, only waay worse. I haven't used it for almost 3 months though, and the problem occurred just a few days ago, which is pretty weird.
I can probably get a replacement touch screen for free because my brother had this phone too and he bought a new phone because the glass of his screen broke.
But I hope I don't have to use that, haha :angel:
Is there any solution to this without taking it to a service center or replacing it?
Thanks!
@Fir3Fli3
Lots of touchsscreen thread in the forum, search and see what they did

[Q] Touch issues even though i have the latest FW?

Hi, i have had my tablet for about 1 week, straight after starting it up i had a fw update which is 17.1.1.A.0.402 which i am assuming is the latest?
anyway i have read a lot about the new fw was supposed to fix the touch issues?
I also have the z1 which i still have and is perfect. ive recently updated to 4.4.2 on that and all my issues are fine on there.
my z2 is acting very strange, if i leave it alone for a while sometimes i will go on it and everything on the screen will be frozen, i can't tap anything, i have to press the power button and then swipe to open it again, it is then fine after that.
also i have noticed, and i think its happening a lot when my tablet is a little angled using the case, the screen will be a bit jittery, where as my z1 is really smooth, and i also sometimes have to really tap icons a few times before they register.
i play clash of clans a lot and its been a bit difficult to play as troops aren't selecting as i am tapping on them.
has anyone got any advice?
I have done a factory reset to see if that would fix any issues from the fw update but its still exactly the same.
Thanks
James
anyone?
james_lpool said:
anyone?
Click to expand...
Click to collapse
I installed the new firmware yesterday. While I notice an improvement with the touch problem it's still present. Just install an multitouch app (like this one: https://play.google.com/store/apps/details?id=com.easylabs.multitouch), let your finger trail on the screen and it's definitely obvious (the number on the top right should be the number of fingers touching the screen and it's often not). I tried the same thing on my old Iconia A500 and that's the one thing where it's WAY better than the Z2.
I don't experience anything as strange as you do though, it's mostly usable and I hardly notice it with the new firmware.
I did experience something very strange just BEFORE updating with one specific charger and one specific USB cable , the tablet wouldn't register any touch at all while it's was plugged in. As soon as I unplugged it it would work. The cable was fine with another charger and vice versa;
Weirdest of it all:
This happened while I was testing the output current for each combination of cable/charger and this particular couple was the one giving the "best" results; consistently between 1.1A and 1.2A
I can't reproduce this behaviour with the new firmware. All in all, it's usable for me. Biggest bug would be it not charging while playing power consuming games.
I have found mine goes more weird when it goes to sleep and i then wake it up, the screens sensitivity seems to be terrible, i have topress the off button and then start it again then its fine.
it will then mostly stay fine until the screen times out again then the same thing will happen when i wake it.
James: Same with my 521...
Touchscreen response was REAL BAD after updating to .402, then it went better and better day by day; strange phenomenon.
I also occasionally experience some touchscreen "numbness" after waking up the table with a double-tap, sometimes touch sensitivity suddenly becomes quite low just without any reason; touchscreen has problems detecting touches near the screen corners or doesn't react to touches at all. Solution: Switch to standby, and back on.
At the same time, the Android symbols (Back, Home, last apps) again become difficult to hit.
You can test this by slowly swiping your finger up from the lower bezel towards one of the symbols: If the touchscreen is ok, symbols get highlighted right after your finger reaches the lower edge of the symbol. If the touchscreen malfunctions, you need to move your finger up to the center of the symbols to get them highlighted.
So it smells like a software issue.
Touchscreen problems usually occur two to three times a day of normal use; so I regard it as acceptable - but the problem still isn't fully solved.
I would say it's a hardware issue which Sony attempts to counterbalance with software patches.
Just like on the Nexus7 (2013). There sfhub released a touchscreen fix which made the problem bearable for most users (with some experimenting with different versions of the fix, because each device is different).
I wrote a PM to sfhub asking him whether he could disclose how his fix works so that Z2 Tablet users perhaps could apply a similar, variable, tailor-made fix to their individual device.
No response, unfortunately.
Perhaps some of you could send the same request to him, and perhaps then he reacts?
every now and then, after double tap to wake, the tablet is extremely unresponsive.
I also just sleep/wake up again via power button and it's fine after that.
So my but feeling it's a software issue, not hardware issue.
- Frank
I never had touch problems but after updating to the latest firmware, the tablet is unusable from time to time
what's annoying me is that Sony wont seem to admit that there is an issue, i was talking on their live chat to support and they said that's the first time anyone's mentioned that and isn't on any list of any known issues
Which doesn't fill me with confidence on how quick this may get fixed.
The speed in which is gets fixed may determine if i just send the tablet back to Amazon for a full refund, unfortunately i have bought the Sony case and magnetic charger now as well
I'm just really puzzled what to do, what can i do apart from sent it back if Sony wont even acknowledge they are aware of the problem and will release a fix soon
The only thing is because i have now bought the charger and case, i kinda want to keep it.
It was a direct replacement for my Z1 which i still have, and that is also updated to 4.4.2 now, but that shows no touch issues at all.
What's very interesting and revealing:
When Sony was addressed a few days ago regarding battery problems on Tablet Z and a few phones after the Kitkat update, they immediately reacted!
They readily explained that it is a problem with the Google Play Services running amok and that a fix will come.
But it seems that just because this here is a Sony problem (and not one for which another company can be blamed like in the above one), Sony simply doesn't react at all and obviously orders the service employees to lie and say that they haven't heard at all of a touch problem.
Boooo, Sony, shame on you!
james_lpool said:
what's annoying me is that Sony wont seem to admit that there is an issue, i was talking on their live chat to support and they said that's the first time anyone's mentioned that and isn't on any list of any known issues
Click to expand...
Click to collapse
HAHA ! Exactly the same in Germany. Even after talking about that issue with the SAME person three days in a row, I still was told the problem was totally unknown.
Later, I had a more private talk with one of the support guys. He revealed to me there was an order from Sony to tell callers exactly that.
Ah, as I thought.
This is abysmal behavior by Sony, period.
Also on the Sony support forum, none of the official support staff has replied to any of the topics about touch screen issues. It seems they are just completely burying their heads in the sand...
FW .402 didnt fix the touch screen issue. It is noticeably better than any FW from before.
Gosh, the touchscreen keep going back to home when i'm in a middle of fb conversatuion.
I was testing with chromecast +youtube: those swibe action to enlarge or fade out afe 99% imprecise...
Really wondering if I can return the item to amazon to fix this problem...
Diomorgan said:
Gosh, the touchscreen keep going back to home when i'm in a middle of fb conversatuion.
I was testing with chromecast +youtube: those swibe action to enlarge or fade out afe 99% imprecise...
Really wondering if I can return the item to amazon to fix this problem...
Click to expand...
Click to collapse
Are you sure you're not just accidentally touching the home button while typing? That happens to me from time to time, which is a downside of having the navigation buttons centered compared to having them in the corner like on pre-4.4 Android tablets. I actually think Google should add a setting to choose if the navigation buttons on tablets are in the left corner, centered, or in the right corner. Having them centered also makes it awkward to reach these buttons when holding the tablet with two hands.

N9 touchscreen problems

I've only discovered this small but really annoying bug recently. It seems that a portion of the screen of my Nexus 9 has problems with single touches sometimes not registered, (for example the spot where the Wifi toggle in landscape mode is at) (if there're >2 touches it always work or if you tap it hard)
Please tell me this is a software bug and can be resolved with an update, i'm tired of touchscreen problems ever since the Nexus 7.
or this spot also in landscape mode
It's really annoying playing games
I haven't heard of anything like this, but I don't think it's software related
Sent from my Nexus 9 using XDA Free mobile app
I had the same problem. I foiund this thread and was disappointed, I had pretty much come to the conclusion I had a hardware problem.
That was a few weeks ago. Today something inspired me to take my N9 out of its "MoKo Ultra Slim Lightweight Smart-shell Stand Cover Case" and suddenly the problem was gone.

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