Block call from Unknown numbers Android | Anonymous | Unknown calls setting

If want to block unwanted call then do this simple tricks to block unknown numbers calls Android .

How can i block unknown numbers call ? Is it possible to block calls from unknown numbers? Android tricks block call from unknown numbers.

How to block call from Unknown Numbers ?

Go to Phone app and tap more then call setting

Now choose Call Rejection option  then next tap Auto Reject list then toggle the on Unknown option in
 some latest android version Go to Phone app and tap more then call setting  Choose Block numbers toggle the on Block  Anonymous calls ./

If these option not showing your phone then Use third party app like Extreme call blocker to block unknown calls.