1. Find "Silence Unknown Callers"
Press Settings.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-911dd421-ecd3-45da-8e75-21031e9b5c90.png?width=210&height=456)
Press Phone.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-6e69a3dc-2d1f-4582-846a-03a335c203bb.png?width=210&height=456)
Press Silence Unknown Callers.
![](http://wmstatic.global.ssl.fastly.net/ml/7151223-f-7d0393af-8688-4d9d-8486-7e7590ffeafa.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-b5266f9d-438a-4869-b784-c1578a404704.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-b5266f9d-438a-4869-b784-c1578a404704.png?width=210&height=456)