1. Find "Silence Unknown Callers"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7051124-f-08070cf8-38bb-4429-8e3b-70f920df34df.png?width=210&height=454)
Press Apps.
![](http://wmstatic.global.ssl.fastly.net/ml/7051124-f-c96cdc71-56e1-480b-8261-4d47950257b6.png?width=210&height=454)
Press Phone.
![](http://wmstatic.global.ssl.fastly.net/ml/7051124-f-8a9e5ab9-6c09-4d4c-8e92-c1675b393440.png?width=210&height=454)
Press Silence Unknown Callers.
![](http://wmstatic.global.ssl.fastly.net/ml/7051124-f-330e719f-0ed0-4fb3-a939-df4d1944897b.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/7051124-f-68fa2fd7-597a-4074-b295-0440fda06001.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/7051124-f-68fa2fd7-597a-4074-b295-0440fda06001.png?width=210&height=454)