![Apple iPhone Xs Max](http://wmstatic.global.ssl.fastly.net/ml/7170125-f-a49b139b-10bf-4fde-96c6-efbe5469f758.png?width=150&height=320)
Apple iPhone Xs Max
iOS 18
1. Find "Silence Unknown Callers"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7170125-f-0c068314-0051-4c8f-ab52-1073b4958a88.png?width=210&height=454)
Press Apps.
![](http://wmstatic.global.ssl.fastly.net/ml/7170125-f-ff5cf532-4a5a-49fe-8240-c83ba7dc16c5.png?width=210&height=454)
Press Phone.
![](http://wmstatic.global.ssl.fastly.net/ml/7170125-f-c33da28c-bf7d-4c54-8753-78e965a4ca81.png?width=210&height=454)
Press Silence Unknown Callers.
![](http://wmstatic.global.ssl.fastly.net/ml/7170125-f-700588f1-8a32-4e47-a242-ccca53797a4f.png?width=210&height=454)
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/7170125-f-c41d53b4-2f76-4cd4-804b-08a8c900686d.png?width=210&height=454)
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/7170125-f-c41d53b4-2f76-4cd4-804b-08a8c900686d.png?width=210&height=454)