Simfinity does not provide a truly unlimited high‑speed data eSIM for Iceland. Every plan named “Iceland Unlimited” actually includes only 1 GB of data, with validity periods ranging from 1 day to 7 days. After the 1 GB limit is reached, the plan’s speed would be throttled, although a specific reduced speed is not listed.
Travelers who need more data can choose fixed‑data alternatives. For example, a 20 GB plan is available for 30 days at $19.80 USD, and a 50 GB “Euro Zone Pass” covers Iceland and 34 additional countries forever for $105.00 USD. These fixed‑data plans grant a larger high‑speed allowance and can be more cost‑effective for users who consume large amounts of data.