eSIMCard does not offer a truly unlimited data eSIM for South Korea. All of the plans that carry the word “Unlimited” in their name actually provide a fixed amount of high‑speed data—typically 1 GB per day or 1 GB total for the validity period—and after the cap is reached the speed is reduced to 384 kbps.
Instead of an unlimited option, eSIMCard provides fixed data plans that are more cost‑effective for most travelers. For example, a 50 GB eSIM for 10 days is priced at $20.05 USD, and a 100 GB eSIM for 180 days is available for $185.68 USD with unthrottled 5G, 4G, 3G and 2G coverage in South Korea and many other destinations. These plans give users a clear, predictable data allowance without speed throttling.