A multi-touch issue masquerading as a touch sensitivity issue? - Nexus 4 General

Ok, so I thought I was having a touch sensitivity problem on my Nexus 4, because often a touch or a swipe would go unrecognized...
Then I realized I was noticing it especially in these two situations:
-Turning wifi slider switch on/off
-Swiping back to a previous tab in chrome
Turns out, what was going on was when I reached that far with the thumb, my palm was touching the curved edge of the screen, making it think I was already touching with a different finger. This "numbed" the screen from my intended touch until I shifted my hand slightly, releasing the unintended multi-touch situation. This made the issue seem sporadic.
I am not saying this is what all other people are experiencing, I am just putting it out there in case someone else is unknowingly doing the same thing. I could also imagine typing errors on the far side of the keyboard for people with certain hand shapes.
It seems almost unavoidable due to the thin bezel and rounded edge, but I would think problem could be avoided with some clever "palm touch near edge" recognition code, but until then I just have to get used to not gripping the phone so tight.
-copperwatt

I think that might be the case also. In some instances, it seems like I can't tap on the screen, but it can swipe and if I reposition my hand, it will work.

Related

Is your Kaiser wobbly / sloped ?

Been very happy with the Kaiser so far, including on the GPS front ;-) but I'm getting slightly annoyed by two hardware nits :
1. wobbly : in portrait mode when I tap on the screen the right side tends to "hit" the keyboard part underneath and looking closely it's easy to understand why, there is a tiny gap between the two parts, likely for the slide/tilt mechanism
2. sloped : when I pull out the keyboard, the right side of the screen goes out more than the left side so it is slightly sloped. It improved a bit when folding the screen. Again I think this is a constraint of the slide/tilt mechanism
I'm thinking it's a general quirk because I had to change my first model (stuck key) and it had the same problems.
Anyone else noticed that ?
in portrait mode my kaiser seems to be spaced the same all the way around and doesnt push on the keyboard when tapping the screen. I do notice what you mean by the keyboard appearing to be farther out on the right side but after taking a closer look it just seems that way because of the face plate not being uniform all the way down (part where it flares out on the left side). Mine is exactly pushed out on both sides.
Lavachild said:
in portrait mode my kaiser seems to be spaced the same all the way around and doesnt push on the keyboard when tapping the screen. I do notice what you mean by the keyboard appearing to be farther out on the right side but after taking a closer look it just seems that way because of the face plate not being uniform all the way down (part where it flares out on the left side). Mine is exactly pushed out on both sides.
Click to expand...
Click to collapse
Mine's the same as this. It sounds like yours may not be quite right and I'd consider getting a replacement. Of course, if you can live with it, and the functionality is all there then it's entirely up to you.
For the sloping I've had two and they were both the same, so it's probably a design constraint, no biggie.
For the "wobbling", it comes and goes, I can only really feel the "knocks" when I hold the left side tight and tap on the scroll bar on the right, again, no biggie.
solution
iv had the same problem of one end sticking out,
iv gone around it by inserting some tiny smugged paper into the sliding slots at the back, resolves the issue quite well.
I don't seem to have either problem (TyTN II version).

Screen alignment/Slide issues

On my ATT Tilt when ever I close the sliding screen now it does not line up properly. The screen sites a few millimeters to the right of where it should. I called ATT and they said that Slide issues aren't covered under warranty. Anyone else having a similar issue?
No problems here, although keyboard sliding is a bit easier to move since the day I bought it and it sometimes moves when I don't expect it to...
Yeah it def slides easier, but it doesn't line up properly.
I've dropped mine many times (only onto carpets so far, happily) and on occasion have found the top half of the phone slightly misaligned with the rest - resulting in a lip at the top, bottom, or right hand side. I've found that with a little gentle but firm nudge the other way, it usually fits back into place. I think there's a little movement designed into the whole thing, to allow it to take repeated sliding and the odd knock without the stress damaging anything.

Screen Distortion / Ripple

Does anyone else have this problem:
When you're just pressing a bit harder than the usual touch, on the top and bottom Left side bezel, it causes the Screen to ripple (fluid wave effect).
Not even pushing down too hard, just a firmer press than usual. This is easy too see on a darker background, like the default background when the device wakes up and still in locked mode.
Yes I realize it's a LCD screen, plus this Corning glass is thinner, and we're not always pressing it that hard to notice anyway.
But the Right side bezel and other areas are mostly fine,
So I'm wondering if it's a defect on my device or not (the left side being too sensitive)? would this cause further problem in the future? And it could be a concern if I carry the Nexus 7 in the backpack and other items pressing on it.
Other reports on this:
http://www.theverge.com/2012/6/29/3125396/google-nexus-7-review
"the display can give a little and cause the LCD to ripple if you really press hard against the screen"
http://forums.androidcentral.com/google-nexus-7-tablet-forum/191040-screen-distortion.html
I wonder if I try the Fix on the other thread, taking off the cover, but instead, loosen the screws a bit on the left side, would that help?
Thanks!
Hi,
My device has this too. Mostly on the left side & a little less on the right side but hardly any on the top or bottom.

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.

Question S Pen Inconsistency at S8 Ultra Edges - Normal?

I recently purchased a Tab S8 Ultra and it's been great so far. However, I noticed that the S Pen doesn't work consistently at the edges of the tablet, particularly the 'bottom' edge where the keyboard connector is.
I initially observed this when I tried to click the 'home' navigation button with the pen, but the click would not register. Repeated attempts to click were met with failed responses more often than registered clicks. This was with the tablet in landscape mode and the taskbar enabled - so the navigation buttons were concentrated at the bottom right of the screen. With the tablet rotated to portrait mode, however, the buttons were responsive and worked as expected. I tested this in Samsung Notes as well. It seems to be common for small 'dead spots' to appear when drawing along the edge. The thing is, when making a pass back towards those spots, they can sometimes be drawn over. These spots are generally in the same area, but the pens' ability to function over these regions seems random. See examples.
I assume this has to do with the magnets around the sides of the tablet interfering with the display/pen EMR technology, but it's odd that it is inconsistent. If the tablet is using permanent magnets at the bottom, one would expect the effects of their magnetic field to be present at all times. It would also be a pretty major design flaw if the pen doesn't consistently work with the navigation buttons in one of their default locations as well.
Has anyone noticed similar behavior with their S8 Ultra (or any S8 series tablet for that matter)? Do you think I have a defective unit?
Make sure you have not turned on disable gestures and buttons when using s pen. That will make so when you use s pen the home button and such won't take affect when touching them with the pen. So no it has nothing to do with magnets for keyboard. Since i tried now with my s pen and it's registering fine.
Hello
Im facing the same issue infact my s pen doesn't work properly in the middle of the screen also. If i press it too hard then it seems to work fine. It started happening a month ago can someone please suggest what i should do ?
Also if it take it to the service center will they replace the device ?
Versace_V said:
I recently purchased a Tab S8 Ultra and it's been great so far. However, I noticed that the S Pen doesn't work consistently at the edges of the tablet, particularly the 'bottom' edge where the keyboard connector is.
I initially observed this when I tried to click the 'home' navigation button with the pen, but the click would not register. Repeated attempts to click were met with failed responses more often than registered clicks. This was with the tablet in landscape mode and the taskbar enabled - so the navigation buttons were concentrated at the bottom right of the screen. With the tablet rotated to portrait mode, however, the buttons were responsive and worked as expected. I tested this in Samsung Notes as well. It seems to be common for small 'dead spots' to appear when drawing along the edge. The thing is, when making a pass back towards those spots, they can sometimes be drawn over. These spots are generally in the same area, but the pens' ability to function over these regions seems random. See examples.
I assume this has to do with the magnets around the sides of the tablet interfering with the display/pen EMR technology, but it's odd that it is inconsistent. If the tablet is using permanent magnets at the bottom, one would expect the effects of their magnetic field to be present at all times. It would also be a pretty major design flaw if the pen doesn't consistently work with the navigation buttons in one of their default locations as well.
Has anyone noticed similar behavior with their S8 Ultra (or any S8 series tablet for that matter)? Do you think I have a defective unit?
Click to expand...
Click to collapse
I have the exact same problem + it also happpes in the top edge not just the bottom ,,
As you said home button doesn't work with s pen but other buttons ( back , recent , screenshot , power off ) works instantly without any miss , which is weird
But in other scenarios , not home screen , like photopea.com ; the "adding layer" button ( which is at the bottom edge almost at the same place of home button ) doesn't work with s pen
Another example; in adobe lightroom the top edge have the same problem, it doesn't respond when tapping ir drawing on it , but it Does when starting the drawing in a closer area from the middle then moving the s pen to the edge , in this case it works , which is very weird
Ahmad-issa1999 said:
I have the exact same problem + it also happpes in the top edge not just the bottom ,,
As you said home button doesn't work with s pen but other buttons ( back , recent , screenshot , power off ) works instantly without any miss , which is weird
But in other scenarios , not home screen , like photopea.com ; the "adding layer" button ( which is at the bottom edge almost at the same place of home button ) doesn't work with s pen
Another example; in adobe lightroom the top edge have the same problem, it doesn't respond when tapping ir drawing on it , but it Does when starting the drawing in a closer area from the middle then moving the s pen to the edge , in this case it works , which is very weird
Click to expand...
Click to collapse
If your issues are to the right of the front-facing camera, maybe they have to do with the S Pen magnets?
I ultimately decided to exchange the tablet. My new one doesn't have any of my aforementioned problems. Also, the issues had nothing to do with the gestures option - the dead spots existed with gestures on/off.
Although the issue is solved, the root cause is still unknown. I'm starting to consider if the problems I had were due to a case. For a short period of time I had a Speck Balance Folio on my first Tab S8 Ultra. It was a nice case but I had to remove it after the first day because the cases magnets were creating huge dead spots on the screen. The case had a pretty large magnet spanning the lower half of the tablet, so maybe it was strong enough to permanently alter the in-built tablet magnets? I never drew on the edges of the screen until after I removed the case, so there was no way to know if the issue existed beforehand.
I currently have the official Samsung Protective Standing cover on my new tablet, and while it does have two small magnets near the edges, I have no issues using any part of the screen with the S Pen.
I guess to answer my own question in the post, and to possibly help anyone reading this in the future:
Your tablet should not be having issues near the edges of the screen.
Avoid all third party cases if possible, unless they are confirmed to be magnet-free (e.g. Supcase Unicorn Beetle and Poetic Turtleskin - It's a shame there are no magnet-free folio cases with decent protection).
Versace_V said:
I recently purchased a Tab S8 Ultra and it's been great so far. However, I noticed that the S Pen doesn't work consistently at the edges of the tablet, particularly the 'bottom' edge where the keyboard connector is.
I initially observed this when I tried to click the 'home' navigation button with the pen, but the click would not register. Repeated attempts to click were met with failed responses more often than registered clicks. This was with the tablet in landscape mode and the taskbar enabled - so the navigation buttons were concentrated at the bottom right of the screen. With the tablet rotated to portrait mode, however, the buttons were responsive and worked as expected. I tested this in Samsung Notes as well. It seems to be common for small 'dead spots' to appear when drawing along the edge. The thing is, when making a pass back towards those spots, they can sometimes be drawn over. These spots are generally in the same area, but the pens' ability to function over these regions seems random. See examples.
I assume this has to do with the magnets around the sides of the tablet interfering with the display/pen EMR technology, but it's odd that it is inconsistent. If the tablet is using permanent magnets at the bottom, one would expect the effects of their magnetic field to be present at all times. It would also be a pretty major design flaw if the pen doesn't consistently work with the navigation buttons in one of their default locations as well.
Has anyone noticed similar behavior with their S8 Ultra (or any S8 series tablet for that matter)? Do you think I have a defective unit?
Click to expand...
Click to collapse
Versace_V said:
If your issues are to the right of the front-facing camera, maybe they have to do with the S Pen magnets?
I ultimately decided to exchange the tablet. My new one doesn't have any of my aforementioned problems. Also, the issues had nothing to do with the gestures option - the dead spots existed with gestures on/off.
Although the issue is solved, the root cause is still unknown. I'm starting to consider if the problems I had were due to a case. For a short period of time I had a Speck Balance Folio on my first Tab S8 Ultra. It was a nice case but I had to remove it after the first day because the cases magnets were creating huge dead spots on the screen. The case had a pretty large magnet spanning the lower half of the tablet, so maybe it was strong enough to permanently alter the in-built tablet magnets? I never drew on the edges of the screen until after I removed the case, so there was no way to know if the issue existed beforehand.
I currently have the official Samsung Protective Standing cover on my new tablet, and while it does have two small magnets near the edges, I have no issues using any part of the screen with the S Pen.
I guess to answer my own question in the post, and to possibly help anyone reading this in the future:
Your tablet should not be having issues near the edges of the screen.
Avoid all third party cases if possible, unless they are confirmed to be magnet-free (e.g. Supcase Unicorn Beetle and Poetic Turtleskin - It's a shame there are no magnet-free folio cases with decent protection).
Click to expand...
Click to collapse
The problem ( in lightroom ) happens in the left side of the cameras
I have the official Samsung bookcover keyboard , i removed it but the home button stil didn't respond , then i thought what will happen if i try from a different angle ? And that's what i did , i used the s pen as its top is heading to the cameras not to my side , and it worked ! Home button responded in every single try ,,,, then i placed back the kickstand piece of the bookcover and did the same with the s pen , and it also worked with no miss , so i think it's not the magnets' fault , it's something in the angle of the pen ,,,, note that i tried the normal way of using it ( when the top of the s pen is heading to me ) and rotate it many times and touch the home button , didn't work , so this probably confirms that it's a matter of angle detection not dead spots or magnet thing
Also , the top left edge responded when swiping down to bring the quick setting , so maybe lightroom app is programmed to not detect the edge's touch in order to prevent any accident touching when handing the device
So i guess there're no big concerns here , we can live with that
Generally speaking, Samsung tablets have always had issues with covers that use magnets to hold the flap closed against the screen as they are too strong for the inbuilt algorithms to compensate for. The Spen itself is nothing but a magnet whose movement is detected by these algorithms. The magnet flaps interfere with that.
I have had ZERO issues since I switched to a cover that uses an elastic band to hold the flap closed against the screen. It has magnets, sure, but they're tiny and only for the lock/unlock functionality, not to physically hold the flap against the screen.
Hope this helps!

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