You can block or unblock a number on an Android phone using the built-in Phone app's "Blocked numbers" menu.

You can block a number on your phone so that a person or company can't call or text you from a particular number. Here's how ...

With the increasing number of unwanted calls and messages from spammers, telemarketers, and scammers, blocking numbers has become a crucial feature for maintaining peace and security on Android ...

No matter what kind of Android phone you may use, there may come a point when you want to change your number. It's something that could be warranted for any reason — from a desire to mix things up to ...