After iOS 16 updates am unable to connect to Wi-Fi

If it only only at home, try to reboot your modem router, wait for its complete autoconfiguration, then try to reconnect it to your wifi network.

If it happens with ALL wifi networks, read this support article:--> If your iPhone, iPad, or iPod touch won't connect to a Wi-Fi network (specifically point #7).

If you still get no help, make an appointment (*) and have your device inspected at an Apple Store or AASP (Apple Authorized Service Provider) among this list:--> Apple – Location Selector. After checking it out, they'll give you all the available options.

Regards

Giulio

(*) You can do it:

• Online:--> Genius Bar Reservation and Apple Support Options - Apple;
• Contacting a local Apple Store or AASP among the list provided above;
• Using the "Apple Store" app, available and downloadable from AppStore.