how do I silence incoming calls not on my contact list ? S7

[AC Question]

donot want ringer when non contact numbers are coming in

 

[B. Diddy]

Welcome to Android Central! You can block unknown numbers, but I'm not sure if you can block non-Contact numbers: https://support.t-mobile.com/docs/DOC-25006

 

[1812dave]

Use Call Control.

 

[Tim1954]

Do not disturb, then exempt the numbers you want..?