Kurt "Cyberguy" Knutsson outlines the simple steps to block unknown calls on your Android and iPhone so you can avoid those spam calls.

How to block your phone number for every call If you don't want anyone to see your phone number when making calls, you can follow these directions. Step 1: On your Android phone, select the Phone app.

Getting annoyed by telemarketers and other spam calls on your mobile phone? Here's how to put a stop to that.

There are multiple ways to block your phone number when calling someone.