nextSIM does not provide a truly unlimited high‑speed data plan for Iceland. All plans that carry “Unlimited” in the name actually include a fixed data amount—typically 1 GB or 2 GB per day—and the speed drops to a reduced rate once that amount is reached (for example, to 512 kbps or 2000 kbps).
For travelers who need a larger data allowance, nextSIM offers fixed data plans such as the eSIM Iceland 50 GB 30Days Standard or the eSIM Iceland 100 GB 30Days Standard, which provide high‑speed data for the entire validity period without a speed reduction. These fixed data plans can be more economical for users who anticipate higher usage than the 1‑ or 2‑GB options.