screen glitch - Galaxy S III Mini Q&A, Help & Troubleshooting

hello developement community!
i am having weird digitizer glitches where it detects 5 points which are there after some touching of the screen (usually swiping), it feels like a hardware issue most likely because i have had many roms and stock had the issue as well. the digitizer touches reset when i sleep/wake so it's not a phone breaking issue and i think the proximity sensor is always engaged which might be related. just wondering on some thoughts that might help. thanks in advance
ps, i had replaced the front panel on it and another s3 mini but the other has no similar bugs they both had the same replacement panel
| here's a screen cap of the bug with show touches enabled
V

Related

[Q] HD7 Touchscreen Issue

Folks,
I am new to touchscreen based smartphones and HD7 is my first. So please be soft on me.
Here is my problem when using the HD7. When i am on a call, if i keep the phone close to my ear/face the phone automatically ends the call due to my ear touching the screen/end call button. Is this how touchscreen supposed to work?
I thought there will be a proximity sensor to turn of touchscreen when keeping near the ear/face.
Please help if there is a easy way out of this.
The screen should turn off when it gets close to your face. Try making a call and hovering your hand near the earpiece to test. If the screen doesn't turn off the proximity sensor may be faulty. I would look into getting the phone replaced.
the sensors are in the upper left corner of the display, just past the HTC logo on the TmoUS model, about 3 or 4 cm from the arc in the glass
Thanks for the reply. I did check the sensor and it does work. For some odd reason (may be its just me new to touchscreen phones), i accidentally end up the call when my ear/face touches it. It might be due to the fact that i tend to keep the phone tiny bit away from my face/ear to avoid skin /hair grease and that causes the sensor to not work?
Anyway, i will play with it for couple of days and see how it goes.

[Q] Touchscreen issues. Replace now or wait?

Since day one, I've had touchscreen issues. When the charger is plugged in, the keyboard is unusable. One touch triggers keys all over the place faster than I could ever touch the screen. Unplugging the charger fixes that issue.
After a while, phantom presses start happening. If an app supports multitouch zoom, it becomes impossible to scroll instead of zooming. Keeping the screen clean seems to delay the problem from happening. If the problem presents, just cleaning the screen won't help. I have to turn the display off and back on for any effect. I've heard putting on a screen protector helps with this issue, but I haven't had a chance get one. If the screen protector just masks the issue, that doesn't seem like a good fix.
Should I try to get a replacement Nook Color now that doesn't have these issues or should I wait until the last month of my warranty to see if I can get more developed hardware? There doesn't seem to be a consensus if these issues are hardware or software.
scratchfury said:
Since day one, I've had touchscreen issues. When the charger is plugged in, the keyboard is unusable. One touch triggers keys all over the place faster than I could ever touch the screen. Unplugging the charger fixes that issue.
After a while, phantom presses start happening. If an app supports multitouch zoom, it becomes impossible to scroll instead of zooming. Keeping the screen clean seems to delay the problem from happening. If the problem presents, just cleaning the screen won't help. I have to turn the display off and back on for any effect. I've heard putting on a screen protector helps with this issue, but I haven't had a chance get one. If the screen protector just masks the issue, that doesn't seem like a good fix.
Should I try to get a replacement Nook Color now that doesn't have these issues or should I wait until the last month of my warranty to see if I can get more developed hardware? There doesn't seem to be a consensus if these issues are hardware or software.
Click to expand...
Click to collapse
That must be frustrating. Mine does not behave this way at all (though I've only had it for 4 days). If you bought it in the store, I'd exchange it. If you bought it via the BN ebay store, I'd try the screen protector first as I hear it's quite an ordeal returning it via ebay.
This us a very common issue. It has something to do with sensitivity of the screen increasing greatly when the unitbis charging or the screen brightness is way up. I just chage mine at night and don't worry about it.
I was having a lot of problems with phantom touches -- I even replaced my 2nd NC just to get another one that had the same issue. I ended up putting on a B&N anti-glare screen protector and haven't witnessed any phantom touches since then.
Edit: I actually meant to post this in the other phantom touches thread. ;/
Happens a lot to me even while unplugged. Known issue. Until I pick up a B&N screen protector I find locking the device and a quick wiping of the screen with a microfiber or any soft cloth (my shirt works in a pinch) removes moisture and oil build-up that is causing the uber-sensitive digitizer to register phantom touches.
Sent from my Nook Color using Tapatalk

[Q] Screen sensitivity

I am not sure whether it is my mind playing trick with me or not, but I feel like my phone is less sensitive after I did the hard reset (power+volume down). Sometimes I need to press 2-3 times because the first light tap was not detected.
So is there anyway to increase the sensitivity?
I have the same problem, but no idea that is the hardware or only software problem.....
Fresh owner of this Optimus 2X in France, in our community, frandroid.com, we encounter the same problem , I think this is a software issue.
Did someone already contact LG??
Maybe they should include this into the bug list thread.
May I know were you guys having this problem since it is out of the box? or after reset?
I have the same problem started from day 1 till now
I have the same issue and already thought I'd be the only one having this problem.
I would not say it's a problem with sensitivity, but it feels like the touchscreen goes into some kind of sleepmode where then you need to press a second time, to wake it up.
Continuous touching is no problem. (like when typing rapidly on the keyboard)
This video is not from me, but it shows the problem.
Have a look at 13:28 and 13:37. The reviewer tries to hit the "Ackermann" entry, but the touchscreen does not recognize the touch. At 13:37 the guy has to press another time to get the entry selected.
http://www.youtube.com/watch?v=VRid-Yhu7Gg&feature=player_embedded
Yes! The touchscreen is definitely less sensitive than my old HTC Hero, and gets quite frustrating sometimes when a scroll misses the first part of the movement or a click is missed.
Sent from my LG-P990 using XDA App
just in case, are you guys using 20110218 baseband too?
The same problem here. If I unlock the screen and then tap on any on screen apps, I need to touch again for it to open. Only the first time though, after that it function ok. I think this is a bug and needs to be fixed... I have my pc for double-click.
Yep, count me in. Same problem here. Sometimes screen taps aren't registered. Will do some research later on, but I think it's a software problem. (maybe you have to tap 2x as fast )
Hi,
same problem here!
Potentially a driver issue. A Nexus S user had a similar issue in this thread: http://forum.cyanogenmod.com/topic/18431-tuning-driver-to-deal-with-unresponsive-touchscreen/
He managed to tweak the driver and it works fine now. Need to know C++ (I think?) to understand though.
9mmBullet said:
Potentially a driver issue. A Nexus S user had a similar issue in this thread: http://forum.cyanogenmod.com/topic/18431-tuning-driver-to-deal-with-unresponsive-touchscreen/
He managed to tweak the driver and it works fine now. Need to know C++ (I think?) to understand though.
Click to expand...
Click to collapse
I see, then probably they will fix it on the next update/gingerbread?
Same issue here.
Correct me if I'm wrong, but the problem seems to be that the screen has zero tolerance when it comes to tapping and swiping together. If you tap and slide your finger a bit directly after the tap, the tap is ignored. In other words your tap has to be a steady tap when you click on a button or an app. Right on the spot and with no swiping or sliding afterwards. I can't reproduce this on any of my other devices.
Ergo, it seems that the natural tapping I'm used to isn't working on the x2. It seems like I have to adjust my tap. I think that this could in principle be solved with a setting somewhere, because clearly the x2 is capable of registering this in for example a web page.
The great thing of this is that you can safely tap and swipe in the app drawer to scroll up and down or left and right. The downside is that a tap with a little swipe isn't registered at all. I would say that LG has choosen here for a wrong setting.
My personal experience about screen sensivity.. can you confirm if it's the same for your device?
I noticed a strange touch response.. and after some tests, I can say that the touch screen and icons are influenced by the surface where the phone was put!
with the phone in my hands, it's all ok (only sometimes - rare - I need to tap more than once).
If I put the phone over a glass surface (like a glass table) without touching it with both hands, the touch and the icons not respond!! NEVER!
If I put the phone on my scanner the touch screen works ok, but the icons not (or only few and rare taps was detected).!
If I put the phone over my big Onkyo amplifier.. It works like in my hands.. or better!! even without touching with hands.. only with a finger!
Put it back on my glass table.. and all stop working again. If I put a aluminium foil under the phone (between phone and table).. the touch and the icons works again !!
If I put it on the bed.. it don't work.
LG support say that they have tested the phone about this issue after my report.. but no strange response was detected by them. I don't know if they really tested it..
Try it and let me know what you think about!
tested on glass surface, I can press and swipe through pages with a finger without problem.
it is true that my device is not so responsive, but aint reaching that level yet
i read about a similar behaviour on other devices because some devices need a proper grounding for the capacitive screen to work correctly. You can find this problem via google.
Some devices have problem in a car-mounting, for example.
But i think thats not the problem the thread-opener talked about?
Guys I'm looking to get this phone and after reading Engadgets review of the X2 where they mention that the screen is not as sensitive to the touch as other phones I got a bit worried and started googling which lead me here!
Is this true? The screen isn't very sensitive and you have to apply more pressure than other capacitive phones?
I know that the OP is talking about a different issue but I reckon LG will get that sorted out via software update, or at least hope so!
Please do post your experience about the screen sensitivity of the X2 as this is putting me off. I currently have the Motorola Milestone 2 which is very sensitive to the touch even with a screen protector on it.
Cheers

Anyone had their screen/display replaced?

Found a few threads here on Xda on this subject but very little engagement and no issues solved.
I replaced my display screen after it got cracked. The replacement isn't as good as the original which is expected, but it works. The issues are that off screen gestures don't work, double tap to wake is what i miss the most. Live display and adaptive brightness don't work. And occasionally device goes blank on wake up, as in you can hear the UI unlock sound but screen is black. It works after few trys.
This is both on custom ROMs and stock Oxygen i tried. Anyone found a software solution? Like a certain ROM or kernel to solve this?

Disabling Proximity sensor - Nokia 7 plus

Hi All,
I am using Nokia 7 plus for past 2 years. Andorid 10 with Nov security patch. Recently, my proximity sensor stopped working and I am not able to use phone any more (due to black screen during calls). I even root my phone and installed edxposed framework for disabling proximity sensor but no luck. Even sensor disabler not working for me. Any suggestions would be much helpful as I want to use this phone badly
I have same problem (stop working after lcd replace), try more solution, but at end i find one "working"... In Developer options enable QuckSettingsDeveloperTiles/SensorOff, this add Sensor tile to top pulldown QuckSettings menu, before call must you manually enable it, after call disable (because sensor off disable all sensors and also camera ;-)
k3dar7 said:
I have same problem (stop working after lcd replace), try more solution, but at end i find one "working"... In Developer options enable QuckSettingsDeveloperTiles/SensorOff, this add Sensor tile to top pulldown QuckSettings menu, before call must you manually enable it, after call disable (because sensor off disable all sensors and also camera ;-)
Click to expand...
Click to collapse
Yeah, I have been using it. Problematic when attending calls in Skype which wont work unless you switch again. Thanks anyway
In my experience, proximity sensors don't stop working, they just work all the time! Often there's a small rubber gasket which separates the UV LED from the sensor. Can be lost when replacing a screen - I did this myself on a Moto G. Screen would go black in a call and couldn't be unlocked. I found the gasket on the floor, replaced it and this fixed the problem. Replaced the screen on a Nokia 7 Plus recently, same problem. I couldn't find a missing gasket this time, but glued a small piece of rubber between sensor and LED and this fixed the issue. Had to experiment with the size of the rubber piece to get it working properly. I think some of the UV light bounces off the back of the screen and is picked up by the sensor , if this piece is missing. My $0.02 worth...
Guys, I am frustrated with proximity sensor of my Nokia 7 Plus, as soon as I call, screen goes black.
I could stop it by enabling Developer Mode and disabling sensors, but this disables all sensors not proximity, and my camera stopped working.
Can I just remove it from mother board? any way to disable only proximity sensor?
Thanks in advance.
MrNams said:
Guys, I am frustrated with proximity sensor of my Nokia 7 Plus, as soon as I call, screen goes black.
I could stop it by enabling Developer Mode and disabling sensors, but this disables all sensors not proximity, and my camera stopped working.
Can I just remove it from mother board? any way to disable only proximity sensor?
Thanks in advance.
Click to expand...
Click to collapse
If you've had the screen replaced, I think the rubber gasket separating the IR LED and sensor has been lost. Seems to be a common cause of this kind of problem. Cheers
Gastrocnemius said:
If you've had the screen replaced, I think the rubber gasket separating the IR LED and sensor has been lost. Seems to be a common cause of this kind of problem. Cheers
Click to expand...
Click to collapse
Many thanks for quick reply.
Yes, I replaced screen. I don't remember about rubber gasket, but now i have to open scree and fix it.
Can we just remove proximity sensor from board? What functions get affected?
MrNams said:
Many thanks for quick reply.
Yes, I replaced screen. I don't remember about rubber gasket, but now i have to open scree and fix it.
Can we just remove proximity sensor from board? What functions get affected?
Click to expand...
Click to collapse
I guess just the screen turning off during a call. But removing it may damage some other component, I guess. I also wonder if the screen stays off or on permanently if the sensor is removed. If you're taking the screen off anyway you could just try my fix of glueing a small piece of plastic or rubber between the sender and receiver, has worked for me and is still working. But this is just my opinion, all the best in whatever you decide to do. Cheers
Gastrocnemius said:
If you've had the screen replaced, I think the rubber gasket separating the IR LED and sensor has been lost. Seems to be a common cause of this kind of problem. Cheers
Click to expand...
Click to collapse
Yes, I replaced screen. I don't remember about rubber gasket, but now i have to open scree and fix it.
Can we just remove proximity sensor from board? What functions get affected?
Gastrocnemius said:
I guess just the screen turning off during a call. But removing it may damage some other component, I guess. I also wonder if the screen stays off or on permanently if the sensor is removed. If you're taking the screen off anyway you could just try my fix of glueing a small piece of plastic or rubber between the sender and receiver, has worked for me and is still working. But this is just my opinion, all the best in whatever you decide to do. Cheers
Click to expand...
Click to collapse
Ok Thanks, I shall try it.
One more question
Is there a way to disable only proximity sensor through OS/App? This will save my effort to remove it from board and possible damage to board.
Am working on another 7 Plus which has the gasket fitted to the proximity sensor and took some pictures so y'all can see what I'm talking about. First picture is of the gasket, second is the sensor without the gasket. Cheers
Just checked in to this forum for give Gastrocnemius a big "Thank you"!
We have a Nokia 7 Plus with the "normal" USB connection issue.
Send to repair to an independent repair station (so not Nokia), who offered a good price.
When it came back it looked fine, charging and fast charging was possible, we have been happy.
Until the first call... Black screen with dialing.
A short search showed: many problems after an update, looked like software related issue with no solution.
Shortly after the new USB connection was faulty again.
So the phone went into a drawer and replaced with a new Nokia.
Now my old Redmi 4 is too old and some for me important apps will not work with the "old" android.
I remembered the Nokia 7 plus and started to repair the USB board, also as a trial if i can handle mobile phone repairs for myself. Well, cheap USB board found, change successful... not! Broke the Display (stayed black after assembly, board from display got hot, probably cable broken).
Ok next step, new display, screen works and and charging repaired on first view.
Function check: black screen during call. Tried several proximity fix tools without success.
The app Phone Check clearly identifies as proximity sensor as "close" / near, no change.
The change to far came only when the display was way to the side. So, the sensor is working, but the function close far is not working.
After weeks I discovered this fred! Gasket? Which gasket! There is no gasket! Check with several videos on YT, yes, gasket identified!
So I tried the mentioned fix rubber band but was not able to get it working.
Then I looked for a gasket online and found one available for the Nokia 2 / TA 1007 on EBAY for a couple of Euros and ordered it for giving it a try.
I just assembled the gasket.... the 7 plus no works like new!
So I'm assuming that during the first USB-board change the gasket got lost and the check by the repair company was only performed for the charging and no more checks for the rest or they didn't care (ASUMING!)
Long story short:
If the gasket is missing you can use the one from the TA-1007!
It does look a little bit different than the above gasket but mine worked. No further assembly from the phone is required, just slip it over the sensor (make sure that the big hole is left, seen as microphone is up and sensor is up left [don't know how to describe better]).
Thanks again for the hind to the missing gasket.
Best regards from Munich,
Thorsten
(typos corrected)
Blackboie said:
Just checked in to this forum for give Gastrocnemius a big "Thank you"!
We have a Nokia 7 Plus with the "normal" USB connection issue.
Send to repair to an idependent repair station (so not Nokia), who offered a good price.
When it came back it looked fine, charging and fast charing was possible, we have been happy.
Until the first call... Black screen with dialing.
A short search showed: many problems after an update, looked like softwrae related issue with no sollution.
Shortly after the new USB connection was faulty again.
So the phone went into a drawer and replaced with a new Nokia.
Now my old redmi 4 is to old and some important apps wil not work with the "old" android.
I remembered the Nokia 7 plus and started to repair the USB board, also as a trial if i can handle mobile phone repairs for myself. Well, cheap USB board found, change sucsessful... not! Broke the Display (stayed black after assembly, board from display got hot, probably cable broken).
Ok next step, new display, yes, phone and charging repaired.
Funktion check: black screen during call. Tried proximity fix tools without sucess.
The app Phone Check clearly identifies as proximity sensor as "close" / near, no change.
The change to far came when the display was way to the side. So the sensor is working, but the function close far is not working.
After weeks I discovered this fred! Gasket? Which gasket! There is no gasket! Check with several videos on YT, yes, gasket identified!
So I tried the mentioned fix rubber band but was not able to get it working.
Than I looked for a gasket online and found one available for the Nokia 2 / TA 1007 on EBAY for a couple of Euros and orderet it for giving it a try.
I just assembled the gasket.... the 7 plus no works like new!
So I'm assuming that during the first USB-board change the gasket got lost and the check by the repair company was only performed for the charging and no more checks for the rest or they didn't care (ASUMING!)
Long story short:
If the gasket is missing you can use the one from the TA-1007!
It does look a little bit different than the above gasket but mine worked. No further assembly from the phone is required, just slip it over the sensor (make sure that the big hole is left, seen as microphone is up and sensor is up left [don't know how to discribe better]).
Thanks again for the hind to the missing gasket.
Best regards from Munich,
Thorsten
Click to expand...
Click to collapse
Glad to hear it worked for you Thorsten!

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