Yes, WhatsApp, FaceTime, and other video/voice calls generally work without issues in the Republic of the Congo, provided you have a stable data connection.
These applications rely entirely on an active internet connection to function. With an eSIM, you'll have access to mobile data, allowing you to make and receive calls, send messages, and use all other features of these communication apps, just as you would at home.
While connectivity is generally reliable in major cities like Brazzaville and Pointe-Noire, it can be more variable in remote or rural areas. Your eSIM will automatically connect to the strongest available major network in your location, ensuring the best possible data service for your calls and online activities. The exact network your eSIM connects to can vary depending on your specific plan and location.