Billion Connect does not offer an eSIM plan for Madagascar that includes a local phone number or SMS capability. Travelers who need communication on the move will need to rely on one of the data‑only plans and can use VoIP applications such as WhatsApp, Telegram, or iMessage to make calls and send messages over the data connection. However, some destinations may block or restrict specific VoIP services, so users should confirm that the apps they rely on are accessible in Madagascar before purchasing.