MabrookPrime is a free mobile VoIP dialer application that allows users to make VoIP calls from any Android device using 3G/Edge/Wi-Fi internet connectivity. Developed based on the requirements of VoIP providers' business needs, this app uses SIP protocol for signaling and supports G729, PCMU, and PCMA codecs. It runs behind NAT or private IP and has a user-friendly interface that includes real-time SIP status messages, call history, and address book integration.

One of the best features of MabrookPrime is its efficient implementation of jitter buffer, which allows for smooth voice playback. The app also uses silent suppression and comfort noise generation to reduce bandwidth usage, making it more efficient in making VoIP calls. Additionally, MabrookPrime integrates with mobile phonebooks and automatically detects the "+" sign when a contact is picked from the phonebook, making it easy to use.

Overall, MabrookPrime is a reliable and user-friendly mobile VoIP dialer that is compatible with all SIP standard switches. Its auto sync of balance and efficient use of bandwidth make it a great choice for anyone looking to make VoIP calls from their Android device.