EtravelSIM does not offer a true unlimited data eSIM for South Korea. The plans that carry the “Unlimited” name give a daily allowance of 4GB and, after that limit is reached, the connection speed drops to 128kbps. Because the high‑speed data is capped each day, the plans are not unlimited in the sense of continuous high‑speed access.
Instead, travelers can choose fixed‑data options that provide larger allowances without throttling. For example, a 50GB plan for 30 days costs $49.99 USD, and a 25GB plan for 30 days costs $27.50 USD. These fixed plans can be more cost‑effective for users who need steady high‑speed data throughout their stay.