WiFi button doesn't allow to turn on WiFi

A trick that helped some people (but not all) is to turn on Airplane mode, restart the iPhone and turn off Airplane mode.

WiFi button doesn't allow to turn on WiFi

In Control Center?

If so:

Because you tapped the Wi-Fi icon in Control Center, the Wi-Fi icon turn to 'white' , that means Wi-Fi Is deactivated.

Tap on it, to activate the Wi-Fi again, it will be turn on to 'blue' again.

And you will have Wi-Fi connection again.

To turn Wi-Fi Off or On, go to -> Settings -> Wi-Fi.

-----

See the following Apple articles:

Connect to Wi-Fi on your iPhone, iPad, or iPod touch

Connect to Wi-Fi on your iPhone, iPad, or iPod touch - Apple Support

If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network

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

Check the route settings -> Recommended settings for Wi-Fi routers and access points

Recommended settings for Wi-Fi routers and access points - Apple Support

If you need help with your Wi‑Fi password

If you need help with your Wi‑Fi password – Apple Support (UK)

•  You need to sign in to your router.
• The Wi-Fi network name, or SSID (service set identifier), is the name your network that has a password.

or If you have iOS 16 / iPadOS 16:

Go to -> Settings -> tap Wi-Fi -> tap on the hideen Password -> enter Passcode -> you will then see the Wi-Fi Password.

If they are On, turn Off Hotspot & VPN.

i just tried that, and it doesn’t work.