A mix of personal and public policies. I don't care which calls this person answers, personally I have stopped answering unknown numbers except if I expect a ca

A mix of personal and public policies. I don't care which calls this person answers, personally I have stopped answering unknown numbers except if I expect a call. But out in public, I don't have much of a problem if a phone rings with a ringtone, if it is not annoyingly loud. Sometimes you put your phone somewhere else than in your pocket, and I think it is good if it rings so I can hear it from a distance. The problem I see that spam calls goes directly to phone. I would like them never to even reach my phone. Like a spam filter on a server, rather than on the client. I would want more control over this.