ZenSim does not provide a truly unlimited high‑speed data eSIM for Switzerland. The plans that carry “Unlimited” in their name actually deliver a fixed data allowance of 2 GB per day. Once that daily quota is reached, the speed would be throttled according to the company’s standard policy.
For travelers looking for larger data packages, ZenSim offers several fixed‑data plans that can be more cost‑effective unless you need a massive amount of data. For example, a 20 GB plan is available for 10 days at $20 USD or for 30 days at $21 USD, and a 10 GB plan can be purchased for 10 days at $17 USD. These plans provide the full amount of high‑speed data for the entire validity period.