Citadel Phone is an application for making audio and video calls and sending instant messages. With Citadel Phone, you can be reached at any time, even when the application is closed, thanks to an internet connection in wifi or 3G / 4G.
With Citadel Phone:
* make high definition video and audio calls
* create audio conferences to several participants
* receive your calls on your smartphone anytime, even when the app is closed (thanks to push notifications)
* call safely (thanks to encryption of secure communications)