I have a Note 9 and recently the screen won't turn off when I am browsing the internet. I have tested this by setting the screen timeout to 15 seconds and it doesn't turn off even if the cable isn't plugged in and charging the phone. I thought the problem only occurred whilst using Google Chrome, so I switched to Samsung Internet but now I am getting the problem with that browser as well! Every other app I use does switch the screen off after 15 seconds so as far as I can see it is only when browsing using either Google Chrome or Samsung Internet. I have cleared the cache of both the browsers and that worked for a few hours but then the problem came back again.
Smart Stay has always been off and I have soft reset the phone and that solved the problem for a few hours but it eventually came back. I have also carried out a factory reset and restored the phone from my google account, and a couple of days later it started happening again.
My last phone (Galaxy S8+) suffered from screen burn which massively affected the price I got for it, so I am paranoid I am going to have the same problem again!
I have contacted Samsung support and they suggested the factory reset (after a soft reset) which didn't work.
If anyone has any ideas of what I can do then please let me know.
Dumb question , I assume you're meaning without scrolling or touching the screen at all, the screen stays lit and will not screen timeout with any of the browers/internet you've tried?
The only thing I can think of right off hand if you haven't tried already or it's imperative that particular permission has too be enabled for whatever reason, is maybe try disabling (turn off ) the apps permission that allows "change system settings" of any sort pertaining to systems and maybe even the permission that allows them apps to "appear on top of another"
If all else fails and you haven't went that route maybe worth a shot?🤷🏽♂️
Microphone sounds like it'd be the last thing that could cause that type problem but it could even be as strange as blimish under the screen (or Google eavesdropping 🤭) not necessarily selecting microphone but any part of screen giving off a false reading that the enabled permission is allowing