Apple iPhone 12 Pro Max

iOS 16.0

iOS 18 iOS 17 iOS 16.0

I can't use Wi-Fi calling on my Apple iPhone 12 Pro Max iOS 16.0

Cause 1 of 4: Your phone needs to be restarted

If you can't use Wi-Fi calling, it may help restarting your phone.

Step 1 of 3

Restart your phone

Press the Top volume key.

Step 2 of 3

Restart your phone

Press the Bottom volume key.

Step 3 of 3

Restart your phone

Press and hold the Side button until your phone restarts.

Press the Top volume key.

Press the Bottom volume key.

Press and hold the Side button until your phone restarts.