iPhone drops WiFi Constantly

My iPhone 15 keeps randomly dropping WiFi. Many, many times a day. It drives me batty. A restart or network settings reset restores it, but then it happens again in short order.

I know it’s the phone and not my router, because no other devices in the household have this problem, including my daughter’s iPhone 15 which is identical and runs the same iOS (17.6.1). Macbooks, iPads, my M1 Studio as well as TVs, security cams, Alexa etc also do not drop WiFi.

I also know it’s the phone because it does it on other people’s WiFi as well. It is not specific to my house.

The kicker is this: my old iPhone 12 behaved exactly the same way. So my theory is that when I transferred apps and data from it to this new one, some specific problem/bug migrated along with it.

I’ve weeded out all “suspect” or “frivolous” apps. I only have apps installed that seem legit (major manufacturers etc) and of course came from the Apple App Store.

I’m not running any VPN.

The behavior is this, specifically: I’ll notice that unbuffered data has stopped loading (like a YouTube vid will stop playing, etc.) I will then open WiFi Settings, which will either display an empty space where the WiFi name is usually given, or the name of the last used network - but the Settings dialogue is frozen. It will take no clicks or allow for any changes or even displays the WiFi list. If I simply quit the settings app and restart it, it does the same once reopened.

So I’m stuck having to restart the phone (hold side buttons.)

It’s extremely annoying.

Grateful for any insight or good suggestions as to what’s causing this.