Blacklist - Call Blocker is an efficient app that allows users to block unwanted calls and messages easily. With this app, users can add any unwanted phone number to the blacklist and let Call Blocker do the rest. The app comes with powerful features that allow users to block calls from contacts, any phone number, and all unknown phone numbers. Users can also track logs of blocked calls. The best part is that all these features are available for free. Users can also stay updated with the latest information about the app by liking the FB fan page. Additionally, users can send their comments and feedback to the developer's email.