This provides you very convenient way to quickly access your recent calls, contacts, call dialing, favorites and groups. Also you can place your favorite videos as a caller id so that you can always see it when you get an incoming call. You can easily block phone numbers to avoid unwanted incoming calls with this contact app. This feature is missing from most of the apps currently on the store. Using this feature, you can choose who can call you. By this feature, user's security can be maintain