1. Find "Silence Unknown Callers"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-5a08f69c-58dd-4a71-83e2-3f47b19b6b2a.png?width=210&height=456)
Press Phone.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-204c89d0-796f-4b22-88a1-2c3e23f5286e.png?width=210&height=456)
Press Silence Unknown Callers.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-075b4fa6-d067-49ed-9fca-aeb3a3b2c788.png?width=210&height=456)
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-77c83847-48d7-4d88-9100-677754c0c7c3.png?width=210&height=456)
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-77c83847-48d7-4d88-9100-677754c0c7c3.png?width=210&height=456)