Black Dialer Express is a mobile app for Android and other smartphones, offering a range of functionalities like VoIP Calls & SMSs, cross-OS Instant Messaging and much more from data enabled mobile phones (3G/4G or WiFi). For using this app, end users will need an Operator Code, which they can obtain from a VoIP Service Provider. While Service Providers can use this White Label Platform to offer Mobile VoIP services in their own brand. Black Dialer Express is a smart mobile dialer application that facilitates VoIP calling over the internet to any landline or mobile devices around the world. The application is most beneficial for making long distance or international calls at low rates utilizing the VoIP services from your favorite service provider. The zero noise, high call quality and intuitive UI makes the application most sought after VoIP calling application. For smooth use of Black Dialer Express, Brand Pin, Username and Password are mandatory which can be obtained from your service provider. Brand Pin is used for authentication purpose and to establish connection with your service provider’s switch. Further, Black Dialer Express allows VoIP calls to be made to mobile devices which doesn’t have this app installed.