Hello @MWS2022 ,
If network is stable and doesn't reset router when phone is safe mode, Issue needs to be happening from a 3rd party app. Most apps that run in background for data are required to provide a persistent notification when doing so. Please take a note of the app you are using next time your resets. You could then try disabling that particular app than run the phone in safe mode.
One UI Beta Team
What I have been doing is after every app update, clearing the cache and restarting the phone. So far that has not helped. There were some recent Google updates about an hour ago, I reset the phone cleared the cache and I'm back on Wi-Fi waiting to see if it fails again
I don't disagree it's probably a 3rd party app, or an app... But the fact remains those 3rd party apps didn't crash my Wi-Fi network prior to the Beta install. Perhaps some of the 3rd party apps are not compatible with the Beta or still need to be updated for android 12.
Even if I am "using my phone wrong", that is not the cause of the other beta testers' complaints about network connectivity and crashes.