ByteSIM does not provide a truly unlimited high‑speed data plan for Switzerland. All plans labeled with “Unlimited” are actually capped at 1GB of high‑speed data per day; after the limit is reached the speed is reduced to 10240kbps.
If a traveler needs more data, ByteSIM offers fixed‑cap alternatives such as a 50GB plan for 3, 5, 7, 10 or 15 days, each of which includes tethering and full high‑speed connectivity without post‑cap throttling. A fixed‑cap plan can be more cost‑effective for most users unless they expect to consume an extremely large amount of data.