Vmax Pro is a premium VoIP app developed by Onxyfone for Android smartphones. This app allows users to make VoIP calls from their mobile devices to anywhere in the world. With Vmax Pro, calls can be made using data-enabled mobile devices, providing a convenient and cost-effective way to stay connected.

One of the standout features of Vmax Pro is its elegant user interface, which offers a sleek and intuitive design. The app also boasts crystal clear sound quality, ensuring that users can enjoy clear and uninterrupted conversations.

Vmax Pro utilizes the SIP-based protocol for signaling, making it compatible with all SIP standard switches. This ensures seamless connectivity and compatibility with various VoIP systems.

Overall, Vmax Pro is a reliable and user-friendly VoIP app that offers high-quality voice calls. With its elegant UI and support for SIP standard switches, it provides a seamless and convenient communication experience for Android users.