What is the call+SMS filter application on my Lumia device?

With the call+SMS filter application you can block (blacklist) incoming calls and messages from selected phone numbers. Simply add phone numbers from the call history to the blocked number list. You can activate a Live Tile and notifications for your filter and also automatically block calls from a private numbers.   The call+SMS filter app is a very simple but effective new option to enhance your Lumia. It requires an updated version of Extras+info system application, this should be offered as a suggested app update by the Store app or Store live tile.