nextSIM eSIM Data Plans for South Korea

nextSIM does not have a high‑speed data plan for South Korea that truly offers unlimited data. Plans with “Unlimited” in the name provide a fixed amount of fast data—1 GB or 2 GB per day or for the entire validity period—after which the speed drops to 512 kbps or 2000 kbps. Because the data cap is still limited, these plans are not truly unlimited.

For travelers who need more data, nextSIM offers fixed‑cap plans such as the 100GB 30 days plan priced at $155.24 USD or the 50GB 30 days plan at $87.66 USD. These plans grant high‑speed data without a speed reduction after a capped amount and can be more cost‑effective for heavy data users.

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.