Bordersim does not provide eSIM plans for Bulgaria that include a local phone number or the ability to send SMS. The only options available from this provider are data‑only plans. Travelers wishing to make voice calls or send messages while in Bulgaria can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, but they should verify that these services are accessible in Bulgaria before purchasing, as some destinations may block or restrict certain apps.