WiFi and Bluetooth issues on iPhone

Try a Forced Restart on the phone. Follow the instructions very carefully, as this is a bit tricky. (Hint.....ignore the "slider" when it appears and keep holding the Side button in until the Apple logo appears. This might take another 20-30 seconds.)

Force restart iPhone - Apple Support

If Wi-Fi and Bluetooth are still not working.......

1) Tap Settings > Wi-Fi. Is the On/Off slider "grayed out"?

2) Tap Settings > Bluetooth. Is the On/Off slider "grayed out"?

If "Yes" to both questions above, there is a hardware problem with the iPhone that will require service at the Apple Store or authorized Apple service shop.

Genius Bar Reservation and Apple Support Options - Apple

Hello~ Click on below…

If your iPhone or iPad won't connect to a Wi-Fi network - Apple Support

Are you using a managed device or a VPN? If not try restart or network reset per highlighted link above to start. Post back if needed.

~Katana-San~