ETravelSim does not provide a truly unlimited high‑speed data eSIM for South Korea. Plans labeled “Unlimited” actually allow 4 GB of data per day and then reduce speed to 128 kbps once the daily allotment is reached, so the data are not unbounded.
Instead, ETravelSim offers fixed‑data plans that can be more cost‑effective for regular travelers. For example, the “South Korea eSIM 50 GB – 30 days” plan gives 50 GB of high‑speed data for 30 days at $49.99 USD, and the “South Korea eSIM 25 GB – 30 days” plan provides 25 GB for $27.50 USD. These fixed‑data options are the primary choices for travelers visiting South Korea.