I'm experiencing the very same. There are multiple iPhone 11s in my household using the latest IOS 14 update and they have the same problems. No reset or any of the well known methods solve it.

I'll join in and say it's been happening on my M1 Max 16-inch MacBook Pro too. The issue started happening around December 2021, and I pretty much always have to restart my laptop as a countermeasure. The issue always comes back after about 7-9 days. The issue still exists on macOS 12.5.