![Apple iPhone 15 Pro Max](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-cf357547-a755-45c8-a97a-ef06b1951946.png?width=150&height=320)
Apple iPhone 15 Pro Max
iOS 17
1. Find "Silence Unknown Callers"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-f44299dc-4f7a-4300-9782-d4e0bd965755.png?width=212&height=458)
Press Phone.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-071a4e80-ef11-465d-b6bc-ed6e9ea215de.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)