Dokk OS Lite is a free and easy-to-use app for Android devices that is capable of receiving and making calls through a virtual Dokk OS logo. It is capable of being called by itself and other nearby devices that both have the application open and are on the same WiFi network or paired via Bluetooth. The app can also send calls to other nearby devices that have the application open. Note that this app will not interfere or access other devices and applications without authorization.