Roambit does not offer an eSIM plan with a local phone number or SMS capability for French Guiana. The provider only sells data‑only plans for this destination, so travelers cannot receive or place calls through a conventional phone number.
Travelers can still use VoIP services such as WhatsApp, Telegram, and iMessage over the data connection to make calls and send messages. However, some destinations may block or restrict certain apps, so it is advisable to verify that the VoIP services needed are accessible in French Guiana before purchasing a plan.