Apple iPhone 12 Pro Max

Apple iPhone 12 Pro Max

iOS 18

iOS 18 iOS 17

I can't use Wi-Fi calling on my Apple iPhone 12 Pro Max iOS 18

Cause 1 of 4: Wi-Fi calling is turned off

Wi-Fi calling needs to be turned on before you can use this function.

Solution: Turn on Wi-Fi calling.

Step 1 of 7

Find "Wi-Fi Calling"

Press Settings.

Step 2 of 7

Find "Wi-Fi Calling"

Press Apps.

Step 3 of 7

Find "Wi-Fi Calling"

Press Phone.

Step 4 of 7

Find "Wi-Fi Calling"

Press Wi-Fi Calling.

Step 5 of 7

Turn Wi-Fi calling on or off

Press the indicator next to "Wi-Fi Calling on This iPhone" to turn the function on or off.

Step 6 of 7

Turn Wi-Fi calling on or off

If you turn on the function, press Enable.

Step 7 of 7

Return to the home screen

Slide your finger upwards starting from the bottom of the screen to return to the home screen.

1 Find "Wi-Fi Calling"

Press Settings.

Press Apps.

Press Phone.

Press Wi-Fi Calling.

2 Turn Wi-Fi calling on or off

Press the indicator next to "Wi-Fi Calling on This iPhone" to turn the function on or off.

If you turn on the function, press Enable.

3 Return to the home screen

Slide your finger upwards starting from the bottom of the screen to return to the home screen.