GulfData does not provide an eSIM with a phone number or SMS capability for Saint Martin. Only data‑only eSIM plans are sold for that 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 users should confirm that the services they rely on are accessible in Saint Martin before purchasing a plan.