Related
Those who don't know there are some people having ghost touch issues on POCO f1 and one guy able to capture it on the video. I personally didn't had the issue but after trying I was able to recreate the issue on my device. soon after I found the cause and able to fix the issue. this may or may not work on your device but absolutely worked for me. this seems to be a software bug. and no-one needs to panic. hopefully it will be fixed in next update.
how to recreate the issue?
Steps
1. download a multi touch tester app I used this
2. first do some testing yourself see if you can spot the issue
3. now do 3 finger swipe down (phone will take screenshot)
4. now randomly touch your screen with 1 or 2 fingers you'll notice 1 or 2 ghost touches.
How to fix Fix it?
Steps
1. go to settings>additional settings>button and gesture shortcuts>take a screenshot
2. and set it to none.
3. reboot
that's it!
the issue should be fixed
please let me know whether this worked for you or not
Yes.
As you mentioned issue was there.
But fixed with those steps.
okaraosp29 said:
Those who don't know there are some people having ghost touch issues on POCO f1 and one guy able to capture it on the video. I personally didn't had the issue but after trying I was able to recreate the issue on my device. soon after I found the cause and able to fix the issue. this may or may not work on your device but absolutely worked for me. this seems to be a software bug. and no-one needs to panic. hopefully it will be fixed in next update.
how to recreate the issue?
Steps
1. download a multi touch tester app I used this
2. first do some testing yourself see if you can spot the issue
3. now do 3 finger swipe down (phone will take screenshot)
4. now randomly touch your screen with 1 or 2 fingers you'll notice 1 or 2 ghost touches.
How to fix Fix it?
Steps
1. go to settings>additional settings>button and gesture shortcuts>take a screenshot
2. and set it to none.
3. reboot
that's it!
the issue should be fixed
please let me know whether this worked for you or not
Click to expand...
Click to collapse
Good stuff. I was skeptical at first since I knew something was off sometimes. Thanks for confirming it. Should be fixed if they took notice of this bug.
Thanks! The issue is 100% reproducible with the app. By turning off 3 finger screenshot shortcut, the issue goes away.
Guys, please file a bug, so this can be fixed and we can go back to using this feature.
1.Yes, that issue is due to the screenshot feature, but shouldn't the phone be able to distinguish between 3 finger touch and more than 3? Either take screenshot on four finger swipe or register it.
2.Can you please confirm if there is accuracy problem in PUBG aiming when you use multitouch? Like the multitouch bugs in Pixel and Zenfone Max Pro but quite subtle, the thing about the other devices are, they look and have been acknowledged by the respective companies regarding the issue but in our case, Xiaomi or Poco is making no announcement or anything.
https://www.youtube.com/watch?v=e5K2N6McC_s
The issue comes up after taking a 3 finger screenshot, but disabling may not be the only solution as this feature is quite useful also
What I have noticed is that after taking screenshot ghost touch is there till we use 1,2 or 3 fingers. Once we use 4, 5 or higher fingers the issue goes away.
Isn't it better to just touch screen with 4 fingers after taking a screenshot which somehow resets the ghost touch issue.
Have tried this solution with multi touch tester app
Mine is just fine even when 3 finger swipe screenshot is switched on
I can confirm that ghost touch issue still persist even when disabling three finger screenshot.
Mostly visible in pubg.
Great, fix worked
I didn't relize the issue but nice posting
Stop it! This is not an issue. It happens on mostly every phone that supports gestures. Test it on OnePlus 6 and you will get the same result.
GizmoFreak said:
Stop it! This is not an issue. It happens on mostly every phone that supports gestures. Test it on OnePlus 6 and you will get the same result.
Click to expand...
Click to collapse
it is software bug which creates inconvenient experience with touch screen.. this fix is just a workaround until official fix..
raj7749 said:
it is software bug which creates inconvenient experience with touch screen.. this fix is just a workaround until official fix..
Click to expand...
Click to collapse
Okay, show me how this affects your usage of phone. Don't show me on touch testing apps. Show me a real use problem.
GizmoFreak said:
Okay, show me how this affects your usage of phone. Don't show me on touch testing apps. Show me a real use problem.
Click to expand...
Click to collapse
lol.. i don't need to prove to you anything about this, don't care wht u think.
However ill tell for the benefits of the others, it was effecting me while playing games.. specially RPG games where multitouch is heavily use. I was seeing weird behaviours sometimes, when selecting troops.. thts how i came to know
raj7749 said:
lol.. i don't need to prove to you anything about this, don't care wht u think.
However ill tell for the benefits of the others, it was effecting me while playing games.. specially RPG games where multitouch is heavily use. I was seeing weird behaviours sometimes, when selecting troops.. thts how i came to know
Click to expand...
Click to collapse
Okay, please record a video of you playing and of course don't show me but share for the benefit of the community.
GizmoFreak said:
Okay, please record a video of you playing and of course don't show me but share for the benefit of the community.
Click to expand...
Click to collapse
xD, if needed will do M too lazy to do that for now
raj7749 said:
lol.. i don't need to prove to you anything about this, don't care wht u think.
However ill tell for the benefits of the others, it was effecting me while playing games.. specially RPG games where multitouch is heavily use. I was seeing weird behaviours sometimes, when selecting troops.. thts how i came to know
Click to expand...
Click to collapse
Exactly! There is no need to prove this issue because Google itself confirms that they have done a mistake by releasing it in Oreo and they have also promised to give a fix in later Pie updates. And people who wants proofs can look up in the internet about the "Multi touch Oreo Bug" problem and how it effects user experience rather than spamming here to make a point.
$hivaM Manav said:
Exactly! There is no need to prove this issue because Google itself confirms that they have done a mistake by releasing it in Oreo and they have also promised to give a fix in later Pie updates. And people who wants proofs can look up in the internet about the "Multi touch Oreo Bug" problem and how it effects user experience rather than spamming here to make a point.
Click to expand...
Click to collapse
Dude, google fixed the issue in the May or June patch and all other OEM's had to merge their builds to fix it. The problem is not there in MiA1 or MiA2.
Here is the bug:
http://en.miui.com/thread-3746297-1-1.html
Thanks
Maybe the original solution for 8.1 and P devices will work for this? It will either cause a bootloop, do nothing, or fix it... worth trying! Obviously an unlocked bootloader is needed for this (Magisk).
We should use this thread to discuss about the official Android 9 update for the Mi A2 Lite!
Cool, but many didn't get the update yet...
It has dark mode?
I am on Havoc OS 2.0, but it hasnt update... Maybe I will return to stock...
iniro said:
It has dark mode?
I am on Havoc OS 2.0, but it hasnt update... Maybe I will return to stock...
Click to expand...
Click to collapse
I thought it has the dark mode, but it hasn't. You can find it in the settings but if you activate it nothing happen..
I noticed that the performance is slightly better than Oreo. The phone runs faster and there are much fewer lags!
First I thought the battery drain got heavier, but after the second day it reached the normal drain, which we know from Oreo
Also I love the new stock launcher. It's like the Pixel-Launcher with the "at a glance" feature, just as the new navigation-gestures which we also know from the Pixel-devices.
00norman00 said:
I thought it has the dark mode, but it hasn't. You can find it in the settings but if you activate it nothing happen..
Click to expand...
Click to collapse
It has a dark mode but it's very limited. When you activate it the quick settings in the notification area and some colour accents on the home screen and app list will become dark. It will not, however, change any other colours in the OS.
I'm experiencing some serious lag at moments.
On oreo I barely experienced lag at all.
Any advice?
I'm having lag/stutter in recent tasks... It was way faster in Oreo and I preferred the vertical layout.
Sent from my Mi A2 Lite using Tapatalk
agamotto said:
I'm having lag/stutter in recent tasks... It was way faster in Oreo and I preferred the vertical layout.
Click to expand...
Click to collapse
If you have root, you can disable the StockLauncher and download another launcher from the PlayStore. Then you will have the vertical layout.
Updated mine in Austria by following the VPN method.
On first boot I face WiFi connection issues and also Bluetooth is not working fine. - resolved by the first reboot
I face a poor call audio distortion.
Videos, Music, etc. that uses the other loudspeaker is working fine but in phone calls using the other speaker I face massive saturation effects even with small volume.
I also tried to manufacturing reset my phone, without success.
best regards,
Mario
Correct. I updated mine yesterday and can confirm, poor call audio distortion. That thing drives me nuts.
The arrows on the network and wifi icons on notification is also a thing to remove, or at least give us the chance to remove it.
Besides that, i didn't see to much cases.
sandman01 said:
Updated mine in Austria by following the VPN method.
On first boot I face WiFi connection issues and also Bluetooth is not working fine. - resolved by the first reboot
I face a poor call audio distortion.
Videos, Music, etc. that uses the other loudspeaker is working fine but in phone calls using the other speaker I face massive saturation effects even with small volume.
I also tried to manufacturing reset my phone, without success.
best regards,
Mario
Click to expand...
Click to collapse
This is a widely seen bug for Pie which I personally find not acceptable in 'stable' release. Couldn't do a calls due to sound quality and reverted back to Oreo.
I wasn't able to upgrade to 9.0. I tried VPN method and it didn't work. Can anyone help me?
itwasmistake said:
I wasn't able to upgrade to 9.0. I tried VPN method and it didn't work. Can anyone help me?
Click to expand...
Click to collapse
Did you clear the Data of the Google Apps?
itwasmistake said:
I wasn't able to upgrade to 9.0. I tried VPN method and it didn't work. Can anyone help me?
Click to expand...
Click to collapse
Did you clear the Data of the Google Apps?
streetspy said:
This is a widely seen bug for Pie which I personally find not acceptable in 'stable' release. Couldn't do a calls due to sound quality and reverted back to Oreo.
Click to expand...
Click to collapse
Can you detail how to revert to Oreo?
Sent from my Mi A2 Lite using Tapatalk
itwasmistake said:
I wasn't able to upgrade to 9.0. I tried VPN method and it didn't work. Can anyone help me?
Click to expand...
Click to collapse
Did you remove sim card and wipe all the things?
00norman00 said:
Did you clear the Data of the Google Apps?
Click to expand...
Click to collapse
I did.
itwasmistake said:
I did.
Click to expand...
Click to collapse
Mhmm, it only work for me when I used the CyberGhost-VPN-App (free trial). ExpressVPN or something else didn't work for me
Okay. So doing factory reset fixed the lag in recent apps.
But I did an antutu benchmark and the performance has dropped significantly from 78232 to 67477.
Anyone else can confirm this?
I just flashed the new Android 11 beta on my Pixel 4 to just check out what's new and thought we could have a little discussion about some of the bigger changes and opinions. The changes I immediately am excited about are:
1) Finally added a pause/play gesture to project Soli!! (Works fantastic)
2) In the display settings, there is now a toggle to increase display touch sensitivity for screen protectors
3) Added a new qs icon for the built in screen recording
While testing the new Soli pause/play, I also immediately noticed how much more improved all of the hand gestures are. Not just the new pause, but also the skipping forward and backwards are so much more accurate and successful for me. It's an extremely welcome change and while Soli always worked decent for me, on the 11 beta I'm getting about 95%-99% success on all hand gestures compared to my about 80% on Android 10.
The screen sensitivity is another welcome addition for me personally. I have a glass screen protector and with the new option enabled, I can absolutely feel a difference in display response. I will admit that before updating, I hadn't had any screen responsiveness complaints but now that there's an option to improve it, I am very pleased with the results. If anything, it may be a tiny bit too responsive. While typing this post out, Gboard seems to occasionally hit a letter before I actually make contact with the screen. Other than that, it's fantastic. My back gestures seem to be the most beneficial from this.
The screen recording qs icon is a cool new addition, although I had native screen recording enabled on Android 10, there was no super quick way to start a recording session.
Lastly, I noticed a few new things in developer options but as I'm no Dev, I really don't know what they do. Oh, they did add a screen frame-rate overlay so you can see the current refresh rate of your screen.
I will be running this for a few days to see if and how battery life is affected and I'll post my findings here. Feel free to comment additional findings or opinions on the new Android 11 beta!
Here are some screenshots of my findings so far.
1dopewrx05 said:
I just flashed the new Android 11 beta on my Pixel 4 to just check out what's new and thought we could have a little discussion about some of the bigger changes and opinions. The changes I immediately am excited about are:
1) Finally added a pause/play gesture to project Soli!! (Works fantastic)
2) In the display settings, there is now a toggle to increase display touch sensitivity for screen protectors
3) Added a new qs icon for the built in screen recording
While testing the new Soli pause/play, I also immediately noticed how much more improved all of the hand gestures are. Not just the new pause, but also the skipping forward and backwards are so much more accurate and successful for me. It's an extremely welcome change and while Soli always worked decent for me, on the 11 beta I'm getting about 95%-99% success on all hand gestures compared to my about 80% on Android 10.
The screen sensitivity is another welcome addition for me personally. I have a glass screen protector and with the new option enabled, I can absolutely feel a difference in display response. I will admit that before updating, I hadn't had any screen responsiveness complaints but now that there's an option to improve it, I am very pleased with the results. If anything, it may be a tiny bit too responsive. While typing this post out, Gboard seems to occasionally hit a letter before I actually make contact with the screen. Other than that, it's fantastic. My back gestures seem to be the most beneficial from this.
The screen recording qs icon is a cool new addition, although I had native screen recording enabled on Android 10, there was no super quick way to start a recording session.
Lastly, I noticed a few new things in developer options but as I'm no Dev, I really don't know what they do. Oh, they did add a screen frame-rate overlay so you can see the current refresh rate of your screen.
I will be running this for a few days to see if and how battery life is affected and I'll post my findings here. Feel free to comment additional findings or opinions on the new Android 11 beta!
Click to expand...
Click to collapse
Were you able to complete the face unlock enrollment?
dave5777 said:
Were you able to complete the face unlock enrollment?
Click to expand...
Click to collapse
Yes it didn't give me a single issue. Are you not able to?
1dopewrx05 said:
Yes it didn't give me a single issue. Are you not able to?
Click to expand...
Click to collapse
Nope, not able to
Ashray_Vk said:
Nope, not able to
Click to expand...
Click to collapse
Strange, I haven't heard of this being an issue for anyone else yet. I even dirty flashed the 11 beta, didn't erase my userdata so I was expecting issues and it's been flawless. Try re-flashing the Android 11 factory image, that we almost certainly fix your issue.
1dopewrx05 said:
Strange, I haven't heard of this being an issue for anyone else yet. I even dirty flashed the 11 beta, didn't erase my userdata so I was expecting issues and it's been flawless. Try re-flashing the Android 11 factory image, that we almost certainly fix your issue.
Click to expand...
Click to collapse
It's a fresh installation with all data wipe . Strange. Maybe I should try the OTA method.
Ashray_Vk said:
Nope, not able to
Click to expand...
Click to collapse
I have the same problem. And there are more people with this.
Is there HDMI out support on Android 11?
1dopewrx05 said:
Yes it didn't give me a single issue. Are you not able to?
Click to expand...
Click to collapse
No luck, I'll probably go back to rooted stock 10. I can't use the phone without root and Fingerface.
Once we get root for this then i will try it out
Does it break Google Pay?
dave5777 said:
Were you able to complete the face unlock enrollment?
Click to expand...
Click to collapse
Face unlock working fine here too, only issue I had was I didn't extract the zip into its entirety of the platform tools folder. That took me 2 hours to figure out how to flash without error.
Luxferro said:
Does it break Google Pay?
Click to expand...
Click to collapse
Yeah, Google pay does not work on it. I received a pop up about it earlier this morning.
For those having face unlock setup issues: Factory reset your phone either in recovery or the settings menu. This happens when you don't clear face unlock before flashing a factory image with the -w option.
(Also, finally hitting my 1000th post with this 10 years later... Can't believe it's been that long)
AwkwardUberHero said:
Yeah, Google pay does not work on it. I received a pop up about it earlier this morning.
Click to expand...
Click to collapse
Hmm. Was afraid to read that. So if we are able to use Google pay we have to wait until Google ads the preview to safely net to pass i think... So i wait... G-Pay is evident to me.
Joolz03 said:
Is there HDMI out support on Android 11?
Click to expand...
Click to collapse
Nope, unfortunately the Pixel line will most likely never have hardware HDMI out capability due to the Chromecast's existence. I have a Chromecast and still would love to have HDMI over usb-c, it's just not going to happen.
How's this running for everyone? Phone and messaging work no issues?
the.emilio said:
How's this running for everyone? Phone and messaging work no issues?
Click to expand...
Click to collapse
Running good for me. Only thing I see is Google assistant won't use the new assistant keeps reverting to old.
Installed on my carrier locked TMO phone no issues. Working great so far.
Hi all,
Just got this Mi Note 10 today and while setting up the phone I started to get those weird screen touches..
Happened so often that I enabled 'Show Taps' via developer options and recorded it here:
https://imgur.com/a/T2Otpht
>> Is there anything I can do about this? Not sure if this is a Hardware or Software fault?
Any thoughts welcome!
thanks
tibrocks said:
Hi all,
Just got this Mi Note 10 today and while setting up the phone I started to get those weird screen touches..
Happened so often that I enabled 'Show Taps' via developer options and recorded it here:
https://imgur.com/a/T2Otpht
>> Is there anything I can do about this? Not sure if this is a Hardware or Software fault?
Any thoughts welcome!
thanks
Click to expand...
Click to collapse
Okay, this is weird. Which version is it? And did you have already tried to reset your device? If it's still there it's probably a hardware defect.
ItsBen12000 said:
Okay, this is weird. Which version is it? And did you have already tried to reset your device? If it's still there it's probably a hardware defect.
Click to expand...
Click to collapse
Model version M1910F4G
MIUI version MIUI Global 11.1.1 Stable (QFDEUXM)
Did a factory reset and was doing the same thing...
tibrocks said:
Model version M1910F4G
MIUI version MIUI Global 11.1.1 Stable (QFDEUXM)
Did a factory reset and was doing the same thing...
Click to expand...
Click to collapse
Well, I had the same MIUI version and region. I bet it's not a software problem. Just send it back
ItsBen12000 said:
Well, I had the same MIUI version and region. I bet it's not a software problem. Just send it back
Click to expand...
Click to collapse
Right, so no fix really... disappointing as the cameras are impressive
My device came shipped with Android Pie Based Miui 11, no screen weirdness. Just after the Android 10 updates that ghost touches appear. So I guess it's just software bug.
me too, sure software problem.
Thanks for the feedback, if software-related were you able to roll back to fix this?
Happy to try a workaround as I'm very reluctant to send it back..
worth a try though, but unfortunately Xiaomi didn't provide stock ROM specifically for my region so I left with no choice
Completely puzzled as I did a Factory Reset via Recovery and haven't seen the issue for past 2 days, I've left the screen touch tracing on and no 'ghost touch' was recorded..
so I don't know what to believe anymore, got an open return ticket but would hate to send it back without needing to..
how can I make sure issue is gone?
Hi, i had this problem 3 weeks ago, temporary solved with hard reset, worked perfectly until yesterday night when this problem went back.
Hard reset again, problem still there.
Someone solved it permanently?
It is really weird because, if i turn off/on the display, sometime works sometime not :S
The phone came with Android 9 and I started to face this after updating to Android 10. The issue is not extreme as shown in the video, it just the touch becomes slow to respond and hard to type fast with the keyboard. Turning off the screen and turning back on solves it temporarily sometimes.
I tried disabling on screen fingerprint and the problem seems to be reduced now. Definitely a software bug
I'm using Mi note 10 lite it also has same problem. Sometime touch freezing and after press power button automatically fix. Some time need to restart. And also one person told me he is fixed by this issue by turned off fingerprint sensor.
UnlimitedBB said:
The phone came with Android 9 and I started to face this after updating to Android 10. The issue is not extreme as shown in the video, it just the touch becomes slow to respond and hard to type fast with the keyboard. Turning off the screen and turning back on solves it temporarily sometimes.
I tried disabling on screen fingerprint and the problem seems to be reduced now. Definitely a software bug
Click to expand...
Click to collapse
I have the exact same problem as you, slow to respond and hard to type. Need to apply more force on the screen for it to respond. This happened randomly throughout the day but are more common during night time for me.
I think it has something to do with the screen lock pin or fingerprint, by changing the screen lock from ie pin to pattern or turning off fingerprint print seems to temporary fix the issue. Another solution is to reboot the phone. I'm using Note 10 Lite btw.
BengCurd said:
I have the exact same problem as you, slow to respond and hard to type. Need to apply more force on the screen for it to respond. This happened randomly throughout the day but are more common during night time for me.
I think it has something to do with the screen lock pin or fingerprint, by changing the screen lock from ie pin to pattern or turning off fingerprint print seems to temporary fix the issue. Another solution is to reboot the phone. I'm using Note 10 Lite btw.
Click to expand...
Click to collapse
I am using the Pro version. Looks like this issue is common for all the phone models in the Note 10 series. Yes, I have noticed that this issue often happens at night.
Try switching off MIUI optimization under Developer Options and restart your device. Then switch it On and restart again. This workaround solved my issue.
https://imgur.com/a/vbvsiyy
CharlesJFRq said:
Try switching off MIUI optimization under Developer Options and restart your device. Then switch it On and restart again. This workaround solved my issue.
https://imgur.com/a/vbvsiyy
Click to expand...
Click to collapse
This fixed the issue for a few days and it started to reappear again. When the issue appears, if I turn on Game Turbo for any app (eg: WhatsApp) that particular app doesn't have this touch issue. Looks like a software optimization or battery optimization of MIUI is causing this issue
UnlimitedBB said:
This fixed the issue for a few days and it started to reappear again. When the issue appears, if I turn on Game Turbo for any app (eg: WhatsApp) that particular app doesn't have this touch issue. Looks like a software optimization or battery optimization of MIUI is causing this issue
Click to expand...
Click to collapse
What firmware version are u in?
I'm currently at 11.0.16.0 and fortunately this issue did not yet reappeared after the workaround.
This is definitely a software ISSUE with MIUI.
CharlesJFRq said:
What firmware version are u in?
I'm currently at 11.0.16.0 and fortunately this issue did not yet reappeared after the workaround.
This is definitely a software ISSUE with MIUI.
Click to expand...
Click to collapse
MIUI 11.1.3.0 Global Stable
Will try out the MIUI optimization to see whether issue still arise. I'll see if my game turbo have the same issue as you too.
I'm currently at 11.0.7.0 (Mi Note 10 Lite)
Edit: Mi optimisation doesn't work for me but the Game Turbo trick do work.
Hello everyone,
anyone experienced the main screen dimming to a very low brightness level " in the sun " and no difference happens if i switched off adaptive brightness and got it to the max. I am not sure if that is related to the phone heating, but in general sometimes it dims very quick without even having the phone that heated.
OR maybe the phone gets heated very fast with simple use in the sun light.. any experiences related to that issue ??
Thank you great people.
Can't confirm your observation ... . But there is an option to dimm the screen in the settings of the energy or battery saving mode.
m.
It's a false positive from the light sensor. Some phones add a special setting to increase the brightness when it's overly bright to offset it, but I haven't come across one for this phone. It's a little impressive that so few phones actually address it after it's been a known issue so long.
I thought this issue was fixed already... what sw version are you on? share the device' model number as well please.
Additionally, submit error report to Samsung Members after reproducing the issue, you should be able to get guidance on how to get the fix...
meduza said:
Can't confirm your observation ... . But there is an option to dimm the screen in the settings of the energy or battery saving mode.
m.
Click to expand...
Click to collapse
no that is not the case, it happens even when not enabling the power saving mode.
twistedumbrella said:
It's a false positive from the light sensor. Some phones add a special setting to increase the brightness when it's overly bright to offset it, but I haven't come across one for this phone. It's a little impressive that so few phones actually address it after it's been a known issue so long.
Click to expand...
Click to collapse
so do you mean there is a solution or it is just a bug with the sensor ?
TheNewGuy92 said:
I thought this issue was fixed already... what sw version are you on? share the device' model number as well please.
Additionally, submit error report to Samsung Members after reproducing the issue, you should be able to get guidance on how to get the fix...
Click to expand...
Click to collapse
can you tell me how to submit this error report ? is it through the samsung members application ??
also the model number is SM-F711B
software version is android 11.. one ui 3.1.1 ..
k.a.h said:
so do you mean there is a solution or it is just a bug with the sensor ?
Click to expand...
Click to collapse
It's a bug that should have been fixed already.
twistedumbrella said:
It's a bug that should have been fixed already.
Click to expand...
Click to collapse
Sadly its not fixed at my side !
k.a.h said:
can you tell me how to submit this error report ? is it through the samsung members application ??
also the model number is SM-F711B
software version is android 11.. one ui 3.1.1 ..
Click to expand...
Click to collapse
If you don't have Samsung Members app installed then go to Galaxy or Play store and download it. In the app, click the Blue circle with+ icon. Then select Error Report.
Provide as much detail about the issue as you can and if possible include any screenshots or screen recording (make sure it's 1 issue per ticket).
Sorry for the late Reply... hope this helps and any future issues, submit a ticket as your first step so Samsung can start working on the issue while you look for work arounds or fixes
It might be a bug related to overheating. Had that happen to mine. The phone becomes too hot and dims the screen, turns off multi-window.