Billion Connect does not offer an Austria eSIM that includes a phone number or SMS capability. The provider’s plans for Austria are only data‑only, which means you can connect to the internet via 4G or 5G but cannot receive or make traditional voice calls or SMS through the eSIM.
Travelers who need voice or messaging can use popular VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. However, some destinations may block or restrict access to particular apps or VoIP services, so it is advisable to confirm that the apps you rely on will work in Austria before purchasing a data‑only eSIM from Billion Connect.