Weird, inconsistent touch screen behaviour after screen replacement - Samsung Galaxy A50 Questions & Answers

So I've recently replaced my screen and I'm getting some strange behaviour with the touch interactivity. I have turned on tap visibility in the developer options and will try and descibe what is happening...
It seems to really dislike some apps, for example on the home screen it is the worst - It sees my fingertip contact when i tap, but its as if i'm holding my fingers down. This is the kind of behaviour in the lock screen too.
The weird thing is though, that I can get to the settings menu through holding the power key > "Side key settings" - and everything works perfectly. In other apps it its also pretty usable - though maybe slightly more laggy sometimes and can hang for a few moments.
I am wondering whether this sounds like a software or a hardware issue to anyone with more expertise? (relatively new to this repair/modding stuff). I have tried downgrading it to a younger version of android with odin but that didn't work. I am also wondering whether rooting might open some possibilities?
Thanks

ptanim said:
So I've recently replaced my screen and I'm getting some strange behaviour with the touch interactivity. I have turned on tap visibility in the developer options and will try and descibe what is happening...
It seems to really dislike some apps, for example on the home screen it is the worst - It sees my fingertip contact when i tap, but its as if i'm holding my fingers down. This is the kind of behaviour in the lock screen too.
The weird thing is though, that I can get to the settings menu through holding the power key > "Side key settings" - and everything works perfectly. In other apps it its also pretty usable - though maybe slightly more laggy sometimes and can hang for a few moments.
I am wondering whether this sounds like a software or a hardware issue to anyone with more expertise? (relatively new to this repair/modding stuff). I have tried downgrading it to a younger version of android with odin but that didn't work. I am also wondering whether rooting might open some possibilities?
Thanks
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looks like you have replaced your screen with a non functioning/ not original screen
can you check if FP is working

JuanTamqd21 said:
looks like you have replaced your screen with a non functioning/ not original screen
can you check if FP is working
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Sorry, what's FP?

ptanim said:
Sorry, what's FP?
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fingerprint

Related

[Q] Touchscreen unresponsive waking up from standby

Is this happening to anyone else?
The power button and volume buttons work but the screen is entirely unresponsive. The only remedy is to remove the battery. It has happened three times but not predictably enough to reproduce.
The phone is rooted with IORoot and I'm running Xposed, G3Tweaksbox with quite a few of the theming options enabled (inc. status bar and lockscreen contents). I also disabled the Knock feature through the hidden settings. I'm completely aware that customization might be the cause, but curious if anyone else has had similar symptoms or knows of relevant bugs.
Happens to me as well, D855 version. It happens once a day but i can unfreeze it, i keep tapping the screen and pressing randomly power and volume buttons. It unfreezes after 5-6 seconds but it's by no means a FIX. This should not happen on a new phone and i'm thinking of selling mine and buying some other model by a different manufacturer.
No combination of screen presses for any amount of time gets it working. It's happening 4-5 times a day and is only resolved by taking out the battery.
I tried the method from http://forum.xda-developers.com/showthread.php?t=2792580 but my firmware version did not change.
It only happen to me if I disable the Knock feature..Try to activate the knock feature and see if it helped
Thanks, @bollefinn. Enabling Knock does seem to resolve the problem. Of course, it creates new problems with the phone turning on in pockets, but that's of less concern.
bollefinn said:
It only happen to me if I disable the Knock feature..Try to activate the knock feature and see if it helped
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Disabled in settings or in the hidden menu?
Daum Ex said:
Disabled in settings or in the hidden menu?
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Hidden menu
bollefinn said:
Hidden menu
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Well that confirms it i hope. I'll give it a shot...

touch screen stops working

this has happening to me lot now. I could be in the middle of any app and the touch screen will just stop working totally until i lock the screen with the power button and then unlock it.
Just a wild guess, do you have DT2W/DT2S enabled?
aloy99 said:
Just a wild guess, do you have DT2W/DT2S enabled?
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Yeah, I do have it enabled currently. Is it really that buggy?
3165dwayne said:
Yeah, I do have it enabled currently. Is it really that buggy?
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I've experienced some issues with DT2W/S on other devices/roms, even when its a feature enabled by the kernel.
Try disabling it.
I'll be sure to try it the next time I have the issue.
bump
happening here as well. noticed the logo used for the "interruptions" settings menu pops up as an indicator at the top of the screen every time this happens. tried changing around the settings within interruptions with no luck. also have dt2w off. imgur . com/KK7riD
sumwhat1 said:
happening here as well. noticed the logo used for the "interruptions" settings menu pops up as an indicator at the top of the screen every time this happens. tried changing around the settings within interruptions with no luck. also have dt2w off. imgur . com/KK7riD
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Hardware problem
Il you put two fingers and make some pressure between the front camera end the rear side of the phone, the screen becomes alive

Device wake issues (power button ignoring first press)..

Hi,
I've had my M9 for a couple of weeks now, and slowly getting it to work how I want it to. One thing nagging me is this weird issue I have with waking the device from sleep.
I have tried to disable all the gesture/smart wake features (double tap the screen, etc). The issue I'm having seems to relate to the light and/or proximity sensor. It seems (and I haven't been able to find any info on this, online or on the phone) that there is a feature which will enable the device to wake up when being picked up or taken out of my pocket. This doesn't always work, but sometimes it does. When I pull my phone from my pocket, it will sometimes wake up. When I glide my finger over the front camera & light sensor, it will sometimes wake up. This is a minor annoyance, as I would like to only be able to wake my device by hitting the power button.
It gets really annoying when these 'gesture' wakes start to interfere with the power button wake. For example (and this is happening more often than not), when I pull my phone out of my pocket, the phone is off, then I hit the power button once, and the phone still doesn't wake. Hitting the power button a second time will wake the device. It seems to me that the smart waking is some how interfering with the manual waking.
Is anyone else seeing this behavior?
Any suggestions for a solution?
Thanks a lot for any help.
This is really odd considering the M9 doesn't support air gestures. Sorry, I have no solution, but is it possible you may have installed an app that may be causing this?
I would think two button push would be the normal, otherwise you could accidentally hit it once and turn the screen on. Do you have Ambient display and pocket detection all turned off ?
Gravity Screen in the play store gives you total control of all that stuff
That for the replies guys.
Clsa, there is no way to disable ambient display & pocket detect because those features do not exist on the M9 (at least... Not that I have found). That's what is bugging me.
I don't think the 2 button press is normal. I've never had to do it on previous phones.
Fernand - not sure if it is another app causing it. I think I have no extra apps installed compared to my last phone.
I just tried Gravity Screen, and it seems to just give me the ability to enable all the features I want to disable.
Any other suggestions?
[email protected] said:
That for the replies guys.
Clsa, there is no way to disable ambient display & pocket detect because those features do not exist on the M9 (at least... Not that I have found). That's what is bugging me.
I don't think the 2 button press is normal. I've never had to do it on previous phones.
Fernand - not sure if it is another app causing it. I think I have no extra apps installed compared to my last phone.
I just tried Gravity Screen, and it seems to just give me the ability to enable all the features I want to disable.
Any other suggestions?
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Settings / Display & Gestures / Ambient display (Wake screen when device is picked up or notifications arrive)
Pocket Detection is part of some Rom Tweaks (insertcoin & viperOne if i remember right)
Hi again, that option is not available on my phone. Do you see it on your M9?
I don't have a custom ROM. Not rooted either.
[email protected] said:
Hi again, that option is not available on my phone. Do you see it on your M9?
I don't have a custom ROM. Not rooted either.
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Yes I have it, but I'm on LeeDroid right now. He adds so much stuff i forget whats "custom" and whats stock
Got the same issue
The power button will ignore the first push while standing by for a long time. Thought it might be caused by apps like greentify?
Hi Ducati, is that a fact or is that just how you understand it? Seems strange that that would be intentional. But it definitely seems to be the case.
I do not have greenify installed either.
Do you get similar behaviour on your One?
After a bit more testing. I can confirm that there are some sort of air gestures on this device. I can wave my finger in front of the front light sensor/camera, and the device will wake.
This doesn't happen all the time, I am not always able to reproduce this. But right now, it is happening. Can anyone else reproduce this?
http://somevid.com/N1OnU8JS
I have the same issue on my M9. Glad I found this thread. Thought my power button was defective.
I can't activate any gestures by waving my hand.
I think it's happening mostly when waking from deep sleep.
I know it's an old thread, but I just installed CyanogenMod 12.1 and I guess my google-fu is rusty. I find that if I hit the power button in quick succession (double click) it turns off the phone. Anyone know how I can stop this?
By quick succession I mean multiple times within 20 seconds

Touchscreen issues

Anyone run into intermittent issues on their watch? Sometimes I have to tap 2 or 3 times for the watch to wake. Other times I have to use the power button to wake as even 10 taps doesn't wake it.
I've also noticed general sensitivity issues where the touchscreen has issues like scrolling through the quick settings when dragging down from the watch face.
+1
I noticed that as well
tiny4579 said:
Anyone run into intermittent issues on their watch? Sometimes I have to tap 2 or 3 times for the watch to wake. Other times I have to use the power button to wake as even 10 taps doesn't wake it.
I've also noticed general sensitivity issues where the touchscreen has issues like scrolling through the quick settings when dragging down from the watch face.
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Nope, my watch has been perfectly responsive to touch. Tilt-to-wake is pretty hit or miss, though. Are you on your custom kernel or back on stock?
btonetbone said:
Nope, my watch has been perfectly responsive to touch. Tilt-to-wake is pretty hit or miss, though. Are you on your custom kernel or back on stock?
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I was on stock but now custom and saw the issues and this is my first replacement because of this issue. I may just return the device. I'm not happy with a device that can't get basic touchscreen right. My OnePlus One has some touchscreen issues but not this bad. It shouldn't fail to wake after 3+ taps.
Have you tried turning on "Show Touches" in Developer Settings? You might be able to find a pattern of what's not working.
btonetbone said:
Have you tried turning on "Show Touches" in Developer Settings? You might be able to find a pattern of what's not working.
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Good suggestion. I didn't see a pattern but it showed when I had the wake issue that that touches always registered in a certain location on the phone. It helped to have ambient on so I could see the touches. It would definitely register them but always near the lower left corner of the screen.
Either way, I returned this device after seeing this same issue two devices in a row [emoji17]. I wanted to have a device that works the way it should. It was fun playing around with something new. The next gen Asus is a possibility but I'm shaken away by them right now. Maybe new moto.

Question Swiping Down For Notifications When In A Call

Anyone notice it turns the screen off? I think the proximity sensor thinks your face is going against the screen and the display turns off but it's really annoying when your trying to access things from the notifications.
Hello my friend!
I have the same phone as you, and I'm sorry but I'm not having any problems the likes of which you describe.
May I suggest the following?
1. Restart phone in safe mode (now this will vary based on your Carrier: on my unlocked Google issued phone, I press Power and Vol UP at same time; Verizon is Power and Vol down, others may be different: Then on the menu that pops up, press and hold Reset and it'll ask you if you want to restart in safe mode, hit yes, then restart)(SafeMode will display on screen). Then call someone and try to recreate the "black screen, can't pull down notification window". If you can pull it down (as I suspect you will be able) then it's an app problem you've got (not a hardware or system issue)
2. Try going to Settings: Apps: Special App Access (way at the bottom of the screen) and then try finding either Display Over Apps applications or Picture-in-Picture apps or other groups that may interfere with your Phone app. I bet you'll find that there's an app or utility you've installed that is conflicting with your screen.
Let me/us know how it goes!
Batfink33 said:
Anyone notice it turns the screen off? I think the proximity sensor thinks your face is going against the screen and the display turns off but it's really annoying when your trying to access things from the notifications.
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Yeah, every phone does this if you have your finger over the sensor. Find a better spot to drag down.

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