Stellar eSim does not currently offer a Costa Rica eSIM plan that includes a phone number or SMS capability; only data‑only plans are available for this destination. Because of that, travelers cannot make or receive regular voice calls or SMS messages through the eSIM itself.
Users who need messaging or voice communication can still use data‑based VoIP applications such as WhatsApp, Telegram, or iMessage. However, some destinations may block or restrict specific apps or VoIP services, so it is advisable to confirm that the applications needed for travel remain accessible in Costa Rica before purchasing a plan.