No, EtravelSIM does not provide a truly unlimited high‑speed data plan for the Czech Republic. The plans listed as “Unlimited” actually offer 4GB of high‑speed data per day, after which the connection is throttled to 128kbps. If a traveler expects to use more data than this daily allowance, the speed reduction will affect their experience.
Travelers who need a larger data quantity can choose a fixed‑cap plan, such as the 50GB eSIM available for 30 days. This plan provides uninterrupted 4G/5G speed until the 50GB is consumed, making it more cost‑effective for heavy usage compared to the “Unlimited” daily‑cap options.