Hiya - Caller ID & Block

The ability to block incoming calls and SMS texts is implemented in many devices by default, but it's usually just a basic function. This is why users would need a somewhat powerful application to get all that they need from this kind of functionality.
With Hiya - Caller ID & Block, it's possible to automatically block from calling you anyone that's not in the Contacts list, but you can also set up rules after you've' received a phone call, from telemarketers for example.
Also, the application uses its own database to identify unknown callers, especially if they are spammers. Of course, it would help a lot to report numbers that are not already in the database, and that can be done with ease. Most of these functions work for SMS texts as well.