Используйте приложение APKPure
Историческую версию Symphony можно получить на Android
Официальное приложение Symphony field для развертывания инфраструктуры подключения.
This app is intended for use by teams working with Symphony in a professional capacity. Only authorized users of organizations who have entered into an agreement with Facebook, Inc. or any of its affiliates governing the use of Symphony are permitted to download and use the Symphony app. Your use of the Symphony app is governed by those terms.