Doing an important business meeting and don't want to be disturbed by a call from unknown person?
However always want to be connected with the near and dear ones. The Smart Call Filter app is for you.
Its Smart Call Filter mode blacklist any callers not in your contacts list from disturbing you.
It can be deactivated when not needed and activated again
just by a click.
It also notes down the blocked call details so you can access and review them at your leisure time.
Works on all versions of Android from 2.1 upto latest 4.0 (Ice Cream Sandwitch)