Nomad does not provide eSIM plans for the Cayman Islands that include a local phone number or SMS capability. Travelers can only purchase data‑only eSIMs from Nomad for use in the Cayman Islands. They can still use internet‑based VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection to make calls and send messages. However, some destinations may restrict or block certain VoIP services, so it is advisable to confirm that the messaging and calling apps you need will work in the Cayman Islands before buying a plan.