Billion Connect does not provide eSIM plans for the Cayman Islands that include a phone number or SMS capability. Travelers who need voice or text services will need to rely on data‑only plans and use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. Some destinations may block or restrict certain VoIP services, so it is advisable to confirm that the apps you rely on are accessible in the Cayman Islands before purchasing a plan.