eSIMCard does not provide a true unlimited data eSIM for Spain. All plans labeled “Unlimited” in the eSIMCard catalog have a capped data allowance of 1GB or 2GB per day; after the limit is reached the speed is reduced to 512 kbps or 2000 kbps. The feature flag “hasUnlimitedName” indicates the marketing name, but the data cap makes the plans effectively fixed.
Travelers who need higher capacity can choose among the fixed‑data options instead. For example, eSIMCard offers a 100GB eSIM for 30 days in Spain for $54.58 USD, and a 200GB eSIM for 31 days for $56.47 USD, both with no reduced speed after the data allowance is used. These plans may prove more cost‑effective for heavy data users compared to the capped “Unlimited” offerings.