![Apple iPhone 15 Plus](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-1a0997b7-c1c5-477c-a898-6641aef956f8.png?width=150&height=320)
Apple iPhone 15 Plus
iOS 17
1. Find "Silence Unknown Callers"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b7dd447f-926b-4252-aa91-157e0833cc72.png?width=212&height=458)
Press Phone.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-df43d12d-2af2-48d5-88a5-36eaf9d5f3f2.png?width=212&height=458)
Press Silence Unknown Callers.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-6b7267c5-7c8a-4b94-be29-d237663c528d.png?width=212&height=458)
2. Ignore calls from unknown numbers
Press the indicator next to "Silence Unknown Callers" to turn on the function.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b4ae308e-0de4-4f78-8bd2-b40a868fd11a.png?width=212&height=458)
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-b4ae308e-0de4-4f78-8bd2-b40a868fd11a.png?width=212&height=458)