Taking advantage of the desire of many iDevice owners to have a blacklist on their own terminals, a developer thought of launching in App Store application iBlacklist Manager – Block Unwanted Calls. Unfortunately, this application is a piece of cake and will not block any call made by your contacts, such functionality can only be implemented after the launch iOS 7. If you are interested in finding out how Apple implemented a blacklist in iOS 7, then I recommend you to read this article, and if you want to get access to iOS 7, I recommend you to read this article.
