Re: How do I block unknown callers? Other discussions were locked without answers

Líder Sénior

Try this: Use You Mail, and their ditchmail service that sends them straight to  a message that says to unblock or make their number available, and then hangs up. 

You can also set up a contact for unavailable or unknown caller, and set the ringtone to silent so it won't "ring" and will dump to voicemail.