eSimfly does not provide a truly unlimited data eSIM for the Czech Republic. All plans marked with “Unlimited” in the name actually contain a fixed data allowance – for example, the Czech Republic Unlimited 30 Days plan offers 3GB/day over 30 days, and the O2 Unlimited (International) plan gives a 35GB cap for 30 days. After the data cap is reached, the speed is reduced to 1000kbps.
For travelers who need a large, high‑speed data allowance, eSimfly offers several fixed data plans. Two examples are the Czech Republic Unlimited 30 Days plan, which provides 3GB/day for 30 days, and the O2 Unlimited (International) plan, which supplies 35GB for 30 days. These plans can be more cost‑effective unless a user requires truly unlimited data.