Billion Connect does not provide an eSIM for Monaco that includes a phone number or SMS capability. The provider offers only data‑only plans for this destination.
Travelers who need voice or messaging can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. However, some destinations may block or restrict access to specific apps or VoIP services, so it is advisable to confirm that the apps you rely on are available in Monaco before purchasing a plan.