After upgrading my iPhone last night (Nov 29) to OS 15.1, I could no longer connect to WiFi. No procedure of rebooting, turning WiFi off and on, forgetting the network, etc, etc, changes the problem.
The problem is that I can no longer log into the WiFi network because the login screen is now completely blank - there is no box for entering the network password.
My phone is now just an expensive flip phone for calls only - effectively no data connection.
What is the fix, which I desperately need immediately? Can I undo the 15.1 installation and go back to the last OS that worked?
HELP!!!