GigSky does not offer an eSIM for Mayotte that includes a phone number or SMS capability. Travelers can only purchase data‑only plans from GigSky for use in Mayotte. VoIP services such as WhatsApp, Telegram, or iMessage can usually be used through the data connection for calling and messaging, but some destinations may block or restrict particular apps, so it is advisable to confirm that the services a traveler depends on are accessible in Mayotte before buying a plan.