Share your experience!
Hi @SDR-1970,
It sounds like the Stay awake settings you can find under: Settings > Developer options > Stay awake.
If you don't have developer options enabled you can do that by going to: Settings > About phone > Then tap Build number until it says you are a developer.
Let me know how it works out for you!
For this setting to work your device will need to be connected to a charger, I'm sorry if this was unclear in my previous post.
Can you try again with you phone connected to a charger and see if the screen still goes in to sleep mode?
I see, can you try and reboot your device to safe mode to see if this may be caused by one of your downloaded apps as these will be temporarily disabled in this mode.
Let me know how it goes!