Call blocker, and also effective SMS blocker. It blocks unwanted calls and spam messages. You can add any number to the blacklist or enable one of blocking options: "Private numbers", "Unknown numbers" or "All calls". 

SPAM BLOCKING:
If you are tired of annoying calls or messages: telemarketing, spam and robocalls, then "Calls Blacklist" is your solution. It is very easy and lightweight, yet powerful call blocker.
The only you need is to add unwanted numbers to the blacklist.

SMS MESSENGER:
This app also provides fully functional built-in SMS messenger.
You can easily send, receive and manage SMS. Also you can manage conversations and block SMS spam using only one app. Once you enabled SMS blocking, the app's built-in SMS messenger become available. 

BLACKLIST:
You can manage all unwanted numbers, and even more - using this app you can block spammers by text of messages. And of course, it is easy to save blacklisted numbers to the file and import them on another device.

PRO VERSION ADVANTAGES:
- Password protection.
- Schedule by days of the week.
- Blocking method selection (required Android 7 or higher).
- No ads.
- Pay once and use forever.
 
You can try the free version before you buy this application.

Block numbers: unwanted calls and texts, call blocker. Full version, no ads.