1. Find "Silence Unknown Callers"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-d480a513-fd85-4c7d-a02d-9b1356495d27.png?width=210&height=458)
Press Phone.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-2b709c47-8184-43e2-ad34-1a50c4d5a72e.png?width=210&height=458)
Press Silence Unknown Callers.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-60867b05-2579-447b-b4ad-86bd479845d5.png?width=210&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-10667653-98a6-4457-9145-33b15821bcbc.png?width=210&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-10667653-98a6-4457-9145-33b15821bcbc.png?width=210&height=458)