1. Find "Silence Unknown Callers"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-dc4e4781-c3a3-4a17-9dc6-a1a91659af50.png?width=206&height=448)
Press Phone.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-32da80d2-3e0b-4dbf-b2da-4d5651f1add5.png?width=206&height=448)
Press Silence Unknown Callers.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-de567c7f-73d1-43fd-8345-b14e654271a3.png?width=206&height=448)
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-f114dd05-984c-443c-be79-06bd190b66bb.png?width=206&height=448)
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-f114dd05-984c-443c-be79-06bd190b66bb.png?width=206&height=448)