I have had constant drops in Wi-Fi recently. It does not matter what Wi-Fi network I connect to, it will drop after inactivity on the phone. If I let the screen time out, and estimated wait of 5 minutes, I will be connected to wi-fi with no internet. This is every network I connect to, Xfinity, Home, Friend's Wi-Fi, and work Wi-Fi.
I have reset the network settings, and reset my home network settings. I have wiped the cache. I have reset the phone to factory settings. I have followed numerous troubleshooting steps like changing IP settings from DHCP to Static and inputting the IP address of my router. I have opened developer options and enabled Wi-fi safe mode, disabled throttling. You name it and I have probably done it.
It is an AT&T-branded S22 Ultra and I have had it since it was launched last year. I keep it updated with security patches, and It's been doing it since I think the May or June patch. I couldn't tell you exactly.
