ByteSIM only sells data‑only eSIM plans for Andorra, so there is no dedicated phone number or SMS service available from this provider. Travelers wishing to communicate by voice or messaging must rely on internet‑based applications. Popular VoIP apps such as WhatsApp, Telegram, and iMessage can generally be used over the ByteSIM data connection, but some destinations may block or restrict access to specific apps or VoIP services. Users should verify that the apps they need are accessible in Andorra before completing a purchase.