MobiMatter does not offer an eSIM for Saint Lucia that includes a local phone number or SMS capability. The provider only offers data‑only eSIM plans for that destination. Travelers who rely on voice or text messages can still use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, but they should verify that these services are accessible in Saint Lucia before purchasing, as some destinations may block or restrict certain apps.