If only I had the ability to rid the world of pompous individuals...
Back to our problem though, we have definitely identified the user actions which prompt it to occur and we can reliably recreate the problem. We've also identified the actions which temporarily fix the problem. The biggest obstacle is this problem does not affect all devices, which means the cause could either be faulty hardware or related to software (specific apps, combination of apps, and/or settings within apps). This means we can't reliably get an Apple tech to recreate the problem on their end.
Plus, the problem we are experiencing is not new, and other people have actually identified the same exact problem and temporary fixes years ago. And even though I know I have reported all of this to Apple, and I believe the numerous other people who state they have reported it, the Apple techs I have spoken with act like Apple has never been made aware of the issue.
So I am not optimistic this is getting fixed, and I still intend to try and return my iPhone to Costco before my return window expires. I have not decided whether or not I will give the iPhone SE another shot or go back to Android. The iOS software has several shortcomings in my eyes, and I am still trying to decide if I can live without certain features of Android and what I gain by sticking with iOS.
Sorry I don't have a better idea!