Flysimio does not provide a true unlimited‑data eSIM for Austria. The only plan that carries “Unlimited” in its name is the Austria Unlimited plan, which offers a high‑speed daily allowance of 2GB and is valid for 7 days; after that period the data is no longer available.
If you need more data, Flysimio offers several fixed data plans for Austria. For example, the Austria 50GB 180Days plan gives 50GB of high‑speed data that can be used over a 180‑day period, and the Europe (31 areas) 50GB 31Days plan provides 50GB of data for 31 days. These bundles give a larger data allowance on a longer validity window and can be more cost‑effective than the daily pass for most travelers.