White Flash on Screen

[toddddddd]

Hello.

For the past few weeks, when on Twitter, Youtube or Chrome apps, I'll be doing my stuff and then I get a quick flash on the screen that is a white window that then slides off to the right of the screen really quickly. It happens in about a twentieth of a second. If I'm watching a youtube vid, it minimizes the video to picture in picture. I've tried cleaning the screen and it happens even if I'm not holding the phone. In twitter or chrome, it just flashes. I've managed to capture the event and I've included a screenshot. Really it's just a white screen that comes up for some reason randomly. It seems to happen every couple of minutes.

Thanks in advance for any suggestions.

Android 11- Samsung s20

 

[B. Diddy]

Welcome to Android Central! Try booting into Safe Mode and testing Chrome or YouTube (unless Twitter was preinstalled, you wouldn't be able to test that): https://www.t-mobile.com/support/de...ltra-5g/safe-mode-samsung-galaxy-s20-ultra-5g. This will at least tell you if the problem is due to some app you installed vs something that was preinstalled or related to the system.

 

[toddddddd]

Thanks for the reply. Ok, so when I booted into safe mode and watched a youtube vid, after about two minutes it did it's little quick flash and minimized the video to picture in picture.

So I guess that means it's something on the system, but I don't recall this happening prior to about 3 weeks ago.

Hesitant to do a factory reset because I don't want to lose files etc.

 

[mustang7757]

Thanks for the reply. Ok, so when I booted into safe mode and watched a youtube vid, after about two minutes it did it's little quick flash and minimized the video to picture in picture.

So I guess that means it's something on the system, but I don't recall this happening prior to about 3 weeks ago.

Hesitant to do a factory reset because I don't want to lose files etc.

It only happen in youtube videos?

 

[toddddddd]

Hi. It happens using any app I believe, but I really only notice it in YouTube, Twitter or Chrome because those are really about the only things I use for any extended period.

Seems to happen maybe when the phone has been active for a couple of minutes. But again, I don't often stare at my phone for any extended period other than YouTube or Twitter so I think that's just when I notice it.

 

[mustang7757]

Hi. It happens using any app I believe, but I really only notice it in YouTube, Twitter or Chrome because those are really about the only things I use for any extended period.

Seems to happen maybe when the phone has been active for a couple of minutes. But again, I don't often stare at my phone for any extended period other than YouTube or Twitter so I think that's just when I notice it.

Check play store if apps need to be updated same with galaxy store

 

[B. Diddy]

It doesn't sound like it could be related to the S View screen (i.e., what shows on the screen when using the S View flip cover), but just in case -- any magnets near the phone? Are you using a case that might have embedded magnets?

 

[mustang7757]

It doesn't sound like it could be related to the S View screen (i.e., what shows on the screen when using the S View flip cover), but just in case -- any magnets near the phone? Are you using a case that might have embedded magnets?

They using a S View case ?

 

[B. Diddy]

They using a S View case ?

I don't think so, but I'm just wondering if the phone might be falsely reacting to what it thinks is an S View case.

 

[mustang7757]

I don't think so, but I'm just wondering if the phone might be falsely reacting to what it thinks is an S View case.

Good suggestion let see .

 

[toddddddd]

Thanks for the great suggestions. I have just a pure rubber spigen case. I also tried it without a case, and the problem persists.

 

[B. Diddy]

Have you disabled any system apps or preinstalled apps?

 

[mustang7757]

Have you made sure all apps are up to date ?
This might be issue with webview, try uninstalling its update

 

[toddddddd]

Not that I know of, but I could check. Not sure how.

 

[toddddddd]

I updated the few that weren't yesterday when you suggested that.

I will look into uninstalling the webview update, whatever that means

 

[B. Diddy]

Android System Webview just got an update on my phone, so you might also try updating it in the Play Store first to see if that fixes the problem.

 

[toddddddd]

Tried a Webview update, but it says it's current.

What do you think the odds are that a factory reset fixes this?

 

[B. Diddy]

Hard to say, since we're still not sure what's behind it. I agree with mustang7757, it's worth a trial of uninstalling updates to Android System Webview.

 

[toddddddd]

Thank you, yeah, I tried that. Problem persists.

 

[mustang7757]

Thank you, yeah, I tried that. Problem persists.

You didn't let play store update it Automatically?