Introduction
Tech Talk : Android Phone – Block Unknown CallersI have always used an Apple iPhone 5 but I am getting a bit bored with Apple and decided to move on to using my 3 years old Samsung S3.

In additional to that, I will also be moving into VOIP utilizing Fongo. Its a great app that allows you to keep you existing number and allows you to do free local calls. Of course if you need to make overseas call you have to pay by the minute… that is if you use Fongo. To get around that I just use alternate apps; such as Hangout, Skype and WhatsApp.

Anyway, that is not part of this discussion. I am here to show you how to block calls on you Android phone which has a caller ID of “UNKNOWN”. For me, I found out that 7 out of 10 call with the caller ID of “UNKNOWN” were telemarketers.

Here are the steps to block those calls.

Blocking callers with caller ID of “Unknown”

1) Open the “Phone” app.

Xybernetics How To Block Unknown Callers On An Android Phone

2) Click on the “Menu” button (bottom left-hand corner of the phone), and select “Call settings”.

Xybernetics How To Block Unknown Callers On An Android Phone

3) Select “Call Rejection”.

Xybernetics How To Block Unknown Callers On An Android Phone

4) Select “Auto reject list”.

Xybernetics How To Block Unknown Callers On An Android Phone

5) Ensure that the “Unknown” row has a check in the box.

Xybernetics How To Block Unknown Callers On An Android Phone

I hope that helps everyone.

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About the
I am a software developer in Calgary, Alberta, Canada with passion in getting my fingers in any new technology. I started software development when I was 10 years old and have never looked back. Now with well over 35 years of software development, I wanted to share some of these key knowledge with the people of the world in the wide web.