block calls from any number not on my contact list? Thank you

[Android Central Question]

I keep getting annoying calls from different numbers not on my contact list, how can i block numbers not on my contact list? I have an htc one m8

 

[ManiacJoe]

If your phone has that feature, it will probably be found in the settings of the dialer app or contacts app.
My previous phone had the option, my current one does not.