1. Find "Silence Unknown Callers"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-768466fe-c6a5-437d-b78f-e6a8bc65ebce.png?width=208&height=450)
Press Phone.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-6ff26e9d-6b5c-4ea9-931c-c0a7b5a684b9.png?width=208&height=450)
Press Silence Unknown Callers.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-531bb70f-f702-4f8f-8f64-e747f104f259.png?width=208&height=450)
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-76ddf913-21d5-4ef2-a3d8-d61fc940d43d.png?width=208&height=450)
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-76ddf913-21d5-4ef2-a3d8-d61fc940d43d.png?width=208&height=450)