Ski weeks, and the slopes that reach Switzerland
A week of skiing in Austria is usually a 5 GB trip: lift and piste apps, the weather, messages and photos over seven days, on a pack that lasts 30. A group sharing one phone's hotspot, or a fortnight on the snow, is better on 10 GB.
Before you buy, check where the lifts go. Ischgl shares its ski area, the Silvretta Arena, with Samnaun in Switzerland, and you can ski from one country into the other and back in a day. The Austria pack does not cover Switzerland, so on the Samnaun side the eSIM has no network to use. The Europe pack includes Switzerland, and for a cross-border area like this it is the sensible choice. In resorts that stay inside Austria, which is most of Tyrol and the Salzburg region, the Austria pack is enough.