nextSIM eSIM Data Plans for South Korea

nextSIM does not provide a truly unlimited data eSIM for South Korea. All plans listed under nextSIM that carry “Unlimited” in their name actually have a fixed data cap; for example, the eSIM Republic of Korea Unlimited 1Days Standard plan offers 1GB of high‑speed data, and the eSIM Republic of Korea Unlimited Plus 1Days Standard plan gives 2GB. After reaching the stated limit the speed drops to a reduced rate, which is noted in the Features column.

If you need a large amount of high‑speed data, nextSIM offers fixed‑data plans instead. The eSIM Republic of Korea 100GB 30Days Standard plan delivers 100GB of data, while the eSIM Republic of Korea 50GB 30Days Standard plan provides 50GB. These options give a substantial data allowance without the “unlimited” label, and can be more cost‑effective for travelers who need a predictable amount of data for their stay.

nextSIM does not provide South Korea eSIMs that include a phone number or SMS capability. The plans it offers for South Korea are data‑only, so travelers will not receive a local South Korean number with voice or text services.

Customers who need phone or text functionality can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, but this may depend on local restrictions. It is advisable to confirm that the specific apps you rely on are accessible in South Korea before purchasing an eSIM from nextSIM.

nextSIM provides 31 single‑country plans for South Korea and 75 multi‑country plans that include South Korea. The available plans vary widely. Prices across all offers range from approximately $3.84 to $1, 278.53, while data caps span from 1 GB up to 100 GB. Some plans are fixed‑data, giving a set amount of data for the validity period, whereas others use a daily data cap, limiting the data available each day. The validity length of these plans also ranges from one day to ninety days, allowing travellers to choose a duration that fits their trip.