If you are looking for a way to change the WiFi router’s name and password from the connected iPhone (iOS 15)? Follow the step by step showed in the video to change Your WiFi Name/Password from iPhone's 12/11/12Mini/12ProMax (iOS 15) phone.
0:00 Opening
0:22 Wi-Fi Name from iPhone
2:07 Change Wi-Fi Password from iPhone
2:39 Connect Wi-Fi to iPhone