Opis Call Blocker Plus

This application blocks both unwanted calls and SMS, and also helps to manage a blacklist. Its easy and lightweight,does not consume any of your device's battery power.
This is the app you are looking for for blocking unwanted calls.
You can either block any number from your contacts list, calls, logs, or add unwanted number manually.
Numbers from the blacklist are blocked quietly and without any signs of a call. Whatever you do, you will not be distracted by phone calls.
Calls Blacklist saves all blocked calls in a log. Don't worry, you will never lose any important call.
This call blocker also boasts some convenient setting options, such as the ability to block private numbers, or to disable notifications.
Features:
- Numbers blacklist (blocking incoming calls and SMS)
- Blocked calls journal
- Blocking anonymous (private) numbers
- Blocking all incoming calls
- Notification of blocked calls (can be disabled in the settings)
Advantages:
- Most robust call blocker
- Works on almost all devices
- Very easy to use
- Does not consume memory or CPU resources
And it's totally FREE! So what are you waiting for! Just download it right away!