Descriptions :Call Blocker helps you avoid annoying calls. Forget about unwanted people, telemarketers and robocalls. Nobody can bother you if you do not want to speak. Many Android phones have call barring. Why is "Call Blocker" better? It has several core features that together provide strong protection against annoying calls. You can enter unwanted numbers from the call log, contact list, or manually entering the phone number into the blacklist. The "Begins with" option also allows you to lock a number range with certain first digits.
Required Android Versions : Ice Cream Sandwich [4.0.3–4.0.4] - Jelly Bean [4.1–4.3.1] - KitKat [4.4–4.4.4] - Lollipop [5.0–5.0.2] - Marshmallow [6.0 - 6.0.1] - Nougat [7.0 – 7.1.1] - Oreo [8.0-8.1]