In Roamer you can make regular calls or Internet calls - it’s your choice!
To make a call, launch Roamer, select a contact from the list (or dial the number manually) and press Call. If you chose a regular call, a callback will be triggered, all you need to do is answer the phone and wait for the connection. If it is a call over Internet it will look more similar to your usual experience when dialing numbers. The other party will see your usual Сaller ID.
For a regular call you likely need a minimal Internet connection (Wi-Fi, GPRS or higher quality connection via SIM card) to initiate a call; once the callback is received, an Internet connection is no longer necessary. At the same time in a growing number of countries (the list is constantly updated) there is no need for Internet at all; you will be given an instruction to call without Internet when you dial in Roamer as usual.