Babji is a mobile application, which allows users to make VoIP calls from mobile phones.For using this app, end users will need an Operator Code, which they can obtain from a VoIP Service Provider. Features: Integration with mobile phonebook Balance information: You can check their account balance on the mobile phone screen or alternatively, they can hear account balance information through IVR (Interactive Voice Response). Babji Plus supports 3G/4G, GPRS and Wi-Fi for internet connectivity.