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NOTIFICATION BAR scrolling down without touching it: Static Electr & Capacitive Scrns
I would like to know if anyone else has experienced this at least once. I didn't post here as a thread til I got confirmation from one other DESIRE user that this has happened to him as well.
I don't know the exact triggers or even the exact scenarios, but this has happened several times to me already:
I am using the phone in horizontal mode and tapping menu items or inputting text, and my finger is nowhere even close to the Notification Bar at top of screen -- and yet suddenly the Notification Bar will auto-scroll down, interrupting what I was doing. Repeated times. It would happen again, with no accidental slippage of my finger or anything. My finger would be nowhere near the bar.
I am wondering if there is any kind of static electricity effect with capacitive screens that can set off a menu action.
So I am asking the experts here. Is that possible? Is it anything that was reported with the Nexus One?
RELATED (1): After this happened a few time in ONE SESSION using the phone -- it happened to be while uploading videos to YouTube, I wanted to test to see if I moved my finger close to the Notification Bar would this perhaps trigger this auto-scroll-down. So I moved my finger just slightly above the surface of the glass at the Notification Bar, and it didn't make it scroll down, but on this occasion, it set off a kind of jumpiness whereby the notification bar was rapidly shifting up and down a few pixels, as though it was receiving input. Has anyone seen this happen? I have not yet been able to get this to repeat from that session of using the phone a few days ago. I was lying down on my bed, and I'm pretty sure sheets produce a lot of static electricity, so this is my layman's question. Is there some causal effect here?
RELATED (2): A variation on this problem would be where I am actually trying to select a menu choice, and instead of my finger-press activating the menu item, instead the menu item jumps up slightly, and does not get selected.
This, again, happened when I was in ALBUM MODE, watched a video in horizontal display, then tapped-and-held the video to bring up the context menu that includes various SHARE options. One of those options is YouTube (the last item of the menu). I would try to select "YouTube" but the menu jumped upwards slightly, and wouldn't get selected.
I have been able to reproduce this one (Related 2) today, days later, in totally different environment .
So, a bunch of questions:
1. Is there such a thing as a static electricity effect that confuses the screen?
2. Are there other kinds of known screen-response problems that could be at play here?
3. Is this something that sounds like "it's defective so return it", or is this a somewhat common experience, sporadically?
the only time I've had that happen to me is when I use a cheap charger I've got and yeah the screen just skitses out. I am using a hero tho but this is the first time I've seen anyone else encounter this so I thought il'd churp in.
I had something similar only once.
The notification bar went mad. It was flicking up and down constantly without me touching the phone at all.
I had to pull the battery to fix the problem.
Hasn't happened since.
Fon22
Happened to me also when loading a ROM in Nesoid.
So I'm not sensing any concerns re; any defect... but still wondering, since I don't know the physics of capacitive screens... Is static electricity the culprit? Never happened once on my GSM HERO... so something is at play here.. or is it an intermittent defect that rarely shows up?
quicksite said:
So I'm not sensing any concerns re; any defect... but still wondering, since I don't know the physics of capacitive screens... Is static electricity the culprit? Never happened once on my GSM HERO... so something is at play here.. or is it an intermittent defect that rarely shows up?
Click to expand...
Click to collapse
The capacitive touch screens work by detecting a disturbance in the EM field on the glass surface. There's a few ways to do it, I think the way mobile phones are doing this is to put a field of their own over the glass and detect fingers on the surface based on what levels of the field they'd expect to see at different points around the screen, and doing some comparisons on what levels are actually detected.
Please someone correct me if I'm wrong BTW.
I've noticed this notification bar problem today and yesterday. Lucky I at least saw how I caused it. My finger was to close to the top right of the screen because of the way I was holding the handset. That combined with the lacklustre multi-touch support on this handset made the phone detect it as a finger swipe that rapidly moved downwards.
I've always had similar problems with capacitative and inductive touch technologies. I don't actually need to touch the desires screen to activate a touch. The worsted was the Zen Micro with the touch controls. I could activate that thing from about 10-15mm away. The touch on-off-dimming lamps too. I usually cycle those through all their light levels with a single touch. Where as my brother actually struggles to activate those, really has to press his hand down hard on them.
Brilliant, Alex... You got right inside my head and answered exactly what i was trying to ask.... the physics of the system.
I'm okay with little glitches here and there, and I am sure I will learn to avoid proximity issues that tend to trigger these mis-fires... just as I learned to adjust my tap-key behavior in typing on the on-screen keyboard on capacitive screen vs all the resistive screens I had used before on Windows Mobile, where fingernails could & would engage the resistive screen -- vs learning that the bottom surface of the finger has to make contact on the keys on capacitive screen... (sorry i am USA and we still resist the world's metric standard, so i don't know the equivalent distance in cm,)... but it's over a 1/4-inch of an upward shift in the position of one's fingers above the capacitive screen from the tip of the fingernail.
But once you train your senses to activate the keys sensors properly, the finger impact behaviors of resistive screens goes away after a while (at least for me)
(oh, btw, I ordered the new HTC capacitive stylus which is a couple of months old now, but is an official DESIRE accessory, so that will be an interesting experience... the thing i miss most about the resistive screen and stylus was being able to scribble notes really fast, way faster than i could ever type -- and draw pretty detailed images or maps and directuions for people. so it will be interesting to see the granularity of control the capacitive stylus will give)
So thanks very much for giving me the exact level of detail I can process as a lay person.. and for assuring me, as the rest of you have as well, that this apparently comes with the territory of this phone -- and therefore should not be seen as a defect. Because i sure as hell didn't want to go shipping this phone back. I can live with an occasional spazzoid misread of intended impact spot on screen...
And, fnally, this was funny -- re the different degree of touch we all consider "normal" --
The touch on-off-dimming lamps too. I usually cycle those through all their light levels with a single touch. Where as my brother actually struggles to activate those, really has to press his hand down hard on them.
Click to expand...
Click to collapse
thanks!
Alex_w said:
The capacitive touch screens work by detecting a disturbance in the EM field on the glass surface. There's a few ways to do it, I think the way mobile phones are doing this is to put a field of their own over the glass and detect fingers on the surface based on what levels of the field they'd expect to see at different points around the screen, and doing some comparisons on what levels are actually detected.
Please someone correct me if I'm wrong BTW.
I've noticed this notification bar problem today and yesterday. Lucky I at least saw how I caused it. My finger was to close to the top right of the screen because of the way I was holding the handset. That combined with the lacklustre multi-touch support on this handset made the phone detect it as a finger swipe that rapidly moved downwards.
I've always had similar problems with capacitative and inductive touch technologies. I don't actually need to touch the desires screen to activate a touch. The worsted was the Zen Micro with the touch controls. I could activate that thing from about 10-15mm away. The touch on-off-dimming lamps too. I usually cycle those through all their light levels with a single touch. Where as my brother actually struggles to activate those, really has to press his hand down hard on them.
Click to expand...
Click to collapse
I was thinking it is softwarerelated. The bar remains halfway the screen, is in the layer below the active app, and jumps to front upon touching the screen.
I have the Problem, too. And that since Monday. I went mad since yesterday evening so i tried to go back to stock, unroot and all.
But the problem is still there.
How can i fix it? Or is my Phone damaged?!
The Notification Bar scrolls down without touching the display and then freezes the phone. so i must lock the phone and relock it and then i can use the phone but after a short time the same problem came back!!
So I reckon you're an undertaker for a living?
Sent from my HTC Desire using Tapatalk 2
erklat said:
So I reckon you're an undertaker for a living?
Click to expand...
Click to collapse
Sorry but i don't understand what you mean
The problem makes me crazy because i have now the stock rom because i thougt it was an issue due a custom rom or a kernel or something.
If you can help me please do that, this problem robs me to sleep
But i havent the Desire. I Have the HTC EVO 3D GSM
19Marc89 said:
Sorry but i don't understand what you mean
Click to expand...
Click to collapse
lol digging up the dead
Sent from my HTC Desire
Sorry but I do not understand the background of your information which is in context with my problem of the notification bar.
@19Marc89 He meant that you responded to a an old (dead) post. Listen, I'm trying to recondition an old Motorola Milestone (Droid) with a crazy touchscreen problem, whose cause I believe I've narrowed down to static electricity - can you do me a favor and try stroking the glass side of the phone lengthwise in one direction down your sleeve, preferably if you have a wool sweater on? Call me crazy, but this works for me, at least temporarily. I posted more here:
http://forum.xda-developers.com/showthread.php?t=1041943&page=5
install gravitybox. go to >statusbar tweaks>disable peek. click it. problem solved!
quicksite said:
I would like to know if anyone else has experienced this at least once. I didn't post here as a thread til I got confirmation from one other DESIRE user that this has happened to him as well.
I don't know the exact triggers or even the exact scenarios, but this has happened several times to me already:
I am using the phone in horizontal mode and tapping menu items or inputting text, and my finger is nowhere even close to the Notification Bar at top of screen -- and yet suddenly the Notification Bar will auto-scroll down, interrupting what I was doing. Repeated times. It would happen again, with no accidental slippage of my finger or anything. My finger would be nowhere near the bar.
I am wondering if there is any kind of static electricity effect with capacitive screens that can set off a menu action.
So I am asking the experts here. Is that possible? Is it anything that was reported with the Nexus One?
RELATED (1): After this happened a few time in ONE SESSION using the phone -- it happened to be while uploading videos to YouTube, I wanted to test to see if I moved my finger close to the Notification Bar would this perhaps trigger this auto-scroll-down. So I moved my finger just slightly above the surface of the glass at the Notification Bar, and it didn't make it scroll down, but on this occasion, it set off a kind of jumpiness whereby the notification bar was rapidly shifting up and down a few pixels, as though it was receiving input. Has anyone seen this happen? I have not yet been able to get this to repeat from that session of using the phone a few days ago. I was lying down on my bed, and I'm pretty sure sheets produce a lot of static electricity, so this is my layman's question. Is there some causal effect here?
RELATED (2): A variation on this problem would be where I am actually trying to select a menu choice, and instead of my finger-press activating the menu item, instead the menu item jumps up slightly, and does not get selected.
This, again, happened when I was in ALBUM MODE, watched a video in horizontal display, then tapped-and-held the video to bring up the context menu that includes various SHARE options. One of those options is YouTube (the last item of the menu). I would try to select "YouTube" but the menu jumped upwards slightly, and wouldn't get selected.
I have been able to reproduce this one (Related 2) today, days later, in totally different environment .
So, a bunch of questions:
1. Is there such a thing as a static electricity effect that confuses the screen?
2. Are there other kinds of known screen-response problems that could be at play here?
3. Is this something that sounds like "it's defective so return it", or is this a somewhat common experience, sporadically?
Click to expand...
Click to collapse
REPLY :
install gravitybox. go to >statusbar tweaks>disable peek. click it. problem solved!
I know I am many years late but did you somehow manage to solve this problem?
I noticed a strange behavior of my wildfire, for quite some time and not always certain applications are activated by themselves (like when you click) or the type of home you show when you want to delete, or if you scroll through the call log apart from the call you made to last, in short, seems to be "possessed," what can it be?
the continuous change of rom? (I like to change often)
having put the cap thicker in the display?
is deteriorating the cell?
it sounds like a touch screen issue. how often does this happen? try installing this app. if the screen starts showing pixels without you touching it then its a digitizer issue.
infernale said:
I noticed a strange behavior of my wildfire, for quite some time and not always certain applications are activated by themselves (like when you click) or the type of home you show when you want to delete, or if you scroll through the call log apart from the call you made to last, in short, seems to be "possessed," what can it be?
the continuous change of rom? (I like to change often)
having put the cap thicker in the display?
is deteriorating the cell?
Click to expand...
Click to collapse
I guess what you're trying to say is that the touchscreen seem to be over sensitive.
if that's the case, it also happenes to me while I use the phone rested on a table. this mostly happened to me while on froyo roms.
Or it could also because your screen protector.
try using the phone angled up a bit while on a table. It should somewhat solve it in my experience.
or it could be a touchscreen issue as heavy metal man said.
Cheers
I noticed that happens when it is half or less of battery ....
I attach picture Touch Screen Test
the top line does not work?
but does not work alone!
Hello everyone! I'm new there and I need some help or orientation please.
Sorry for my weird English, is not my first language! I hope you can understand me
I bought a new Samsung Galaxy s4 mini Duos Latinoamerican version GT-i9192. one month ago, the pone works great and I'm testing all at 100%..First impressions are the battery life is not big. but that's not the problem there.
the first problems I have its a kind of ghost touches, let me explain what happens.
sometimes when I'm writing I press the "Y" letter and the phone shows that I pressed the "Z" for example., both are letters that are too far between they and I dunno why that happens! that don't happen all time and not a lot but sometimes happen! another thing I discovered is if I put one drop of watter on the screen and I touch on the drop the phone shows a continuous touch on the drop of watter, don't matter if I'm not touching the screen at all, keep the touch on the drop til the drop dissapears, is that normal? I tested a drop of water on another phones and nothing happens when I touch the Drop the phone reactions are normal just touch on the place when I touch and stop touching when I'm not touching.
the first thing is this. this only happens 2 times on this first month that I have with the phone.
the touchscreen touchs alone! I'm using the phone, normal, the screen don't have watter and nothing weird just fingers marks on the screen protector, and the screen touch on a specific point alone, and don't stop touching, if I clear the area, turn off/on the screen still touching alone! the first time that this happens its solved alone just turned on /off the screen and stop the touch, the second time don't stop, don't matter if I clear the area or turn off /on the screen. the second time I solved restarting the phone and works normal again.
someone have some interesting for say about that? I dunno if that are normal or not.. I thinking to do a factory reset maybe would help? I never restored or flashed nothing, this my stock rom!
I hope someone can help me, thanks!
migueldvp said:
Hello everyone! I'm new there and I need some help or orientation please.
Sorry for my weird English, is not my first language! I hope you can understand me
I bought a new Samsung Galaxy s4 mini Duos Latinoamerican version GT-i9192. one month ago, the pone works great and I'm testing all at 100%..First impressions are the battery life is not big. but that's not the problem there.
the first problems I have its a kind of ghost touches, let me explain what happens.
sometimes when I'm writing I press the "Y" letter and the phone shows that I pressed the "Z" for example., both are letters that are too far between they and I dunno why that happens! that don't happen all time and not a lot but sometimes happen! another thing I discovered is if I put one drop of watter on the screen and I touch on the drop the phone shows a continuous touch on the drop of watter, don't matter if I'm not touching the screen at all, keep the touch on the drop til the drop dissapears, is that normal? I tested a drop of water on another phones and nothing happens when I touch the Drop the phone reactions are normal just touch on the place when I touch and stop touching when I'm not touching.
the first thing is this. this only happens 2 times on this first month that I have with the phone.
the touchscreen touchs alone! I'm using the phone, normal, the screen don't have watter and nothing weird just fingers marks on the screen protector, and the screen touch on a specific point alone, and don't stop touching, if I clear the area, turn off/on the screen still touching alone! the first time that this happens its solved alone just turned on /off the screen and stop the touch, the second time don't stop, don't matter if I clear the area or turn off /on the screen. the second time I solved restarting the phone and works normal again.
someone have some interesting for say about that? I dunno if that are normal or not.. I thinking to do a factory reset maybe would help? I never restored or flashed nothing, this my stock rom!
I hope someone can help me, thanks!
Click to expand...
Click to collapse
Maybe my answer won't help you much but sometimes I have this too (maybe 5-6 times over the last 6 months) - restarting the phone solves the issue.
What you can do is to activate "Show touches" and "show pointer location" in the developer options to see what really happens on the screen. You can activate the developers options by tapping several times on "Build Number" in "Settings -> About Device"
charliebigpot said:
Maybe my answer won't help you much but sometimes I have this too (maybe 5-6 times over the last 6 months) - restarting the phone solves the issue.
What you can do is to activate "Show touches" and "show pointer location" in the developer options to see what really happens on the screen. You can activate the developers options by tapping several times on "Build Number" in "Settings -> About Device"
Click to expand...
Click to collapse
Thanks for the answer, I did this when I bought the phone and yes, I confirmed with this options that the phone touchs bad and alone, cause the phone shows the touch point!
migueldvp said:
Thanks for the answer, I did this when I bought the phone and yes, I confirmed with this options that the phone touchs bad and alone, cause the phone shows the touch point!
Click to expand...
Click to collapse
It seems your touch panel is either faulty or requires re-calibration. You probably need to visit the service centre or try their hotline.
hobbya said:
It seems your touch panel is either faulty or requires re-calibration. You probably need to visit the service centre or try their hotline.
Click to expand...
Click to collapse
Oh, you can try on your phone using a drop of water on the screen and the option to show the touch points active, and say if the screen touch alone. just put one drop off water and move your fingers over the drop, the ghost touch will appear, can u? thanks a lot!
migueldvp said:
Oh, you can try on your phone using a drop of water on the screen and the option to show the touch points active, and say if the screen touch alone. just put one drop off water and move your fingers over the drop, the ghost touch will appear, can u? thanks a lot!
Click to expand...
Click to collapse
No touch points are shown unless I dip my finger into the water drop. The water wraps round my finger and forms a part of my fingertip.
You could always check the touch sensors and the touch screen version. And you could look into seeing if there is a new version of the touch screen. Type these codes into the dialer to check.
*#*#0842#*#* device test (vibration test and backlight test)
*#*#2663#*#* touch screen version
*#*#2664#*#* touch screen test
Sent from my SAMSUNG-SGH-I577 using xda app-developers app
hobbya said:
No touch points are shown unless I dip my finger into the water drop. The water wraps round my finger and forms a part of my fingertip.
Click to expand...
Click to collapse
oh,): Bad notices for me /:. I'm not lucky at all.. maybe I will use my warranty, I'm still having 2 month more of warranty on the store.. I hope they don't said nothing for that and change my phone for a new one. BTW, thanks for the help bro! **** u Samsung.
Nitro1max1 said:
You could always check the touch sensors and the touch screen version. And you could look into seeing if there is a new version of the touch screen. Type these codes into the dialer to check.
*#*#0842#*#* device test (vibration test and backlight test)
*#*#2663#*#* touch screen version
*#*#2664#*#* touch screen test
Sent from my SAMSUNG-SGH-I577 using xda app-developers app
Click to expand...
Click to collapse
The above codes do not work on my i9192
Hmm they should work on any Samsung device
Sent from my SAMSUNG-SGH-I577 using XDA Premium 4 mobile app
Nitro1max1 said:
Hmm they should work on any Samsung device
Sent from my SAMSUNG-SGH-I577 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
For the general test menu (including touchscreen panel), the codes should be *＃7353＃ or *#0*#
The codes are not universal across all Samsung devices.
Oh, I thought those codes were for any Samsung device.
Sent from my SAMSUNG-SGH-I577 using XDA Premium 4 mobile app
My 32Gb N5X has really suffered a loss of screen sensitivity since the last update. Are there any adjustments I can make to fix that? An example is that I have a hard time answering calls with an upward swipe. It'll take two or three swipes before I can pick up a call. Also, on the lock screen, I cannot swipe away a notification on the first swipe, that also takes two or three to make it happen. Anyone else have this problem? Any solutions?
Thanks!
EDIT: looks like I'm not the only one. http://www.androidpolice.com/2018/0...id-8-1-lockscreen-swipe-issues-pixel-devices/
I'm having problems with my Fold 4 not registering taps. I tap a space on the screen and nothing happens. I do it several more times, and finally it responds. I haven't seen a clear pattern yet, because it's somewhat intermittent. Has anyone else seen this problem?
I'm slightly suspicious of the Microsoft launcher here., but I suspect that's because it gets the majority of my taps, it being the launcher. I haven't had that problem in the past.
Just a minute ago I sat down to make a video of what I was seeing in case I thought an exchange might help. It happened on the first try, and I wound up having to press it five times with escalating pressure to finally get it to react. For the record, I have not seen a correspondence between pressure and the problem. I think I just naturally start pushing harder and when it works, it feels like it was more pressure. But when the problem isn't occurring, it takes very little pressure to register a tap.
Not using the Microsoft Launcher, but I am using SwiftKey, and I do have the same issue, especially with the space key. Mostly with the outside screen BTW.
Ah, I should have been more specific. Yes, I've only seen the problem on the outer screen so far. And I'm using gboard for my keyboard.
I've had a similar issue but it seems to have gotten better. Being intermittent makes it hard to pinpoint
I initially transferred apps and data from my Note 20 and was having issues on the outside and inside screen of taps not registering. Finally did a FDR and set up from scratch, haven't had the issue again. I always setup from scratch and took a shortcut this time, lesson learned!
ggrant3876 said:
I initially transferred apps and data from my Note 20 and was having issues on the outside and inside screen of taps not registering. Finally did a FDR and set up from scratch, haven't had the issue again. I always setup from scratch and took a shortcut this time, lesson learned!
Click to expand...
Click to collapse
I actually did an FDR last yesterday to try and solve the problem. Naada. It was still there for me.
I'm currently using Samsung's OneHome UI to see if it's something with the MS Launcher. Good god, I hate their launcher!
It feels like the sensitivity on the outer (cover) screen is too low, and combined with much smaller keys on keyboards (I use GBoard) there are plenty of missed hits and no response. Try turning on touch sensitivity and see if it improves ( Setting -> Display -> Touch Sensitivity. Mine went a tad better. I also changed the layout preferences to 'normal' keyboard height and most of my misses are now gone..
I'm having same issue but not with the keyboard but with tapping on apps on the home screen. I'm able to almost reproduce it every time in the middle of the screen. Is there any update on this issue?
I've got same issue that a tap on a app gets no action. Happens occasionally. Must be a bug.
After a factory reset mine has come back too. Hopefully we will get some bug fixes with the September security update.
imanony said:
I'm having same issue but not with the keyboard but with tapping on apps on the home screen. I'm able to almost reproduce it every time in the middle of the screen. Is there any update on this issue?
Click to expand...
Click to collapse
Same. I never have a problem in application, it's only when I'm interacting with the launcher.
I think the issue is with the refresh rate dropping. I used the galaxy max hz app and increased the base hz on the phone and I'm noticing response being much better now.
I also have this issue on my Fold 4's cover screen. I've always used the debug option to show where I touch, and when my touches don't register I still see the touch indicator, so I can only assume this is a software issue not deciding what to do with the touch. I think One UI might be overly sensitive for gestures, and detects taps as drags/swipes. A mini swipe on an app or folder on the home screen for instance won't do anything (which happens to me frequently).
I've had that problem quite a few times as well, not enough to drive me crazy but enough to be slightly annoying. It only happened when taping on the bottom of the screen. It often registered my taps as a swipe up. I saw the homescreen starting to go up slightly as if it was going to enter the drawer. Then one day I realized it was my way of tapping the screen that was the culprit. The way I hold my phone makes me ever so slightly swipe up as I tap the screen, but only when taping the bottom part, if I tap anywhere else, I don't tend to move my finger up as I tap. Of course, I'm talking minuscule amount of swiping here, probably less than a millimeter. It's just the way I hold the phone and move my thumb, it's personal, and I think everyone is going to have a different experience depending on how they hold their phone and tap the screen. Anyway, I'm not saying "you're using it wrong", because I think it's a problem samsung must fix, as I don't have that problem on any other phone. Probably too sensitive. I just tried to reproduce the problem as I write this message, and succeeded twice in less than 20 tries, so definitely the problem is still there. It's just that now I tap straight on instead of "sideways", and it works just fine. Just a workaround, I know...
Edit: on the cover screen, of course. Inside screen works fine with crooked taps.
Glad im not the only one. On the outer screen i have had times where I have to tap something 3 times for it to register... I never had this issue with my Z Fold 2