Several years ago, I kept having the problem that my Galaxy phone (don't remember the version #) kept accidentally activating things when I got really sweaty on summer runs and it bounced around in my hydration vest pocket. The worst thing was TWO different times when it turned my screen brightness down to minimum - on a sunny summer day, even in the shade, it's nearly impossible to see the near-black screen to turn the brightness back up! LOL
After this happened the first time, I looked into deactivating the touch activation, but even if my screen was locked, there was no way to disable being able to pull open those settings and change the screen brightness. (As I said, this was a few versions ago for the phone, so this may have changed.)
The second time it happened was during the Space Coast marathon - for the last maybe 10k, I couldn't see my phone screen at all! When I got done, I was able to go inside where it was dark enough to be able to barely see the screen and change it. Sooooo frustrating!