1. Find "Silence Unknown Callers"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-5df4caa7-6635-43c0-a188-fc64ab6b3c2a.png?width=212&height=458)
Press Phone.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-c83e73ae-555f-433d-b7d0-2f76ea328ffb.png?width=212&height=458)
Press Silence Unknown Callers.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-e572d6db-60d7-4676-8060-ede47de578ed.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-5fe9df62-38e7-4d6a-b3d8-33c68c913a40.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-5fe9df62-38e7-4d6a-b3d8-33c68c913a40.png?width=212&height=458)