OnCallCX is an Unified Secure Communication and Collaboration Platform and brings the privacy of the end-user to the next level. The Android app for OnCallCX complements the single end-user experience and provides an unmatched Verified E2EE (End to End Encrypted) secured, decentralized communication infrastructure. The application supports voice and video calls, chat, presence and data sharing in a single collaboration platform. All data between the smartphone app and the desktop client is synchronised.