The Sonus Mobile Client enables a native Wi-Fi and LTE calling experience on Android handsets that do not have native Wi-Fi Calling support from the handset manufacturer. Using the downloadable Sonus Mobile Client, operators can quickly and significantly expand the availability of their Wi-Fi and LTE Calling service and bring the benefit of improved indoor coverage to the overwhelming majority of their existing subscriber base. - See more at: https://www.sonus.net/products/sonus-mobile-client/sonus-mobile-client
Wi-Fi Calling is provided as part of authorized mobile service provider trial. After installing the app, you will be asked to enter your operator trial code. If you do not have your trial code, please contact your trial administrator.