nextSIM eSIM Data Plans for South Korea

nextSIM does not provide a truly unlimited high‑speed data eSIM plan for South Korea. All plans that carry “Unlimited” in the title give the user a fixed amount of high‑speed data – typically 1 GB total or 1 GB per day – with a reduced speed of 512 kbps once the limit is hit.

If a larger data allowance is needed, nextSIM offers fixed‑data plans such as the 100 GB for 30 days plan at $149.20 USD and the 50 GB for 30 days plan at $84.24 USD, both delivered on a 5G network and valid for the entire 30‑day period. These options give travelers a cost‑effective way to stay connected without the speed reduction that follows the “Unlimited” caps.

nextSIM does not provide a South Korea eSIM plan that includes a phone number or SMS capability.
Only data‑only eSIM plans are offered for South Korea, and travelers can use VoIP applications such as WhatsApp, Telegram, and iMessage over a data connection to make calls and send messages.

nextSIM offers 35 single‑country data plans and 69 multi‑country plans that include South Korea. Plan prices range from about $3.99 to $1, 292.14, while data caps vary from 1 GB to 100 GB. The catalogue contains both fixed‑data options, which provide a set amount of data for the validity period, and daily‑cap options, where the data allotment resets each day; nextSIM lists 66 fixed‑data plans and 38 daily‑cap plans in total.