This app helps to create a list to avoid calls in importants moments very easy to use and needs a very little space in your device

You can block any phone number in your contacts list or you can add it manually from the app

Caracteristics:

-Black list with your previous numbers added
-Different ways of blocking (full phone number starting with... contains... and finishing with..)
-Blocking modes (just calls or calls and messages)
-Friendly interface.