If you are an Android user and want to block calls and messages from unwanted numbers, there are many ways to do it. One of the best and easiest ways is to download and install Call Blocker and SMS Blocker. It is a very simple and easy-to-use app that can block calls and messages from any number. It has a very simple and easy-to-use interface and is very stable. It is a free app that does not have any in-app purchases. You can add numbers to the blocklist and the whitelist.