Apple iPhone Xs

Step 1 of 4

1. Find "Phone"

Press Settings.

Step 2 of 4

1. Find "Phone"

Press Phone.

Step 3 of 4

2. Ignore calls from unknown numbers

Press the indicator next to "Silence Unknown Callers" to turn on the function.

Step 4 of 4

3. Return to the home screen

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