iOS 15 on iPhone 12 WiFi & Cellular broken

[Molcroft]

iOS 15 has been working flawless up until today. Even though being connected to a WiFi network, the 4G symbol shows and most of the time my connection is almost dead. Switching over to 4G makes no differences. Other WiFi networks has the same result, other units are just working fine with my WiFi networks.

I've tried restarting and resetting network setting without any success.

Reported to Apple of course, but has anyone have anyone had the same issue? Just trying to not reinstall the phone.

 

[Molcroft]

Solved! Was my VPN app that screwed up, had to delete it.

 

[netrom2211]

Yeah I have some problems with this. Also using VPN app, will try to disable it. Thanks for tips!

 

[AgentMcGeek]

I have very unstable WiFi on Eduroam. iPhone doesn't connect, says "Internet not available" on the network or disconnects randomly. I've disabled private MAC address and Private Relay on the network. Seems to improve stability a bit but still not ideal. Network settings reset didn't change anything.