MobileSIM eSIM Data Plans for South Korea

MobileSIM does not provide a truly unlimited data eSIM for South Korea. The plans that include “Unlimited” in their names actually allow 3GB per day; once that daily quota is reached, the connection speed is reduced to 1000 kbps. Because of the daily cap, these plans are not unlimited in the sense of offering high‑speed data without limits.

Instead, MobileSIM offers several fixed‑data options that may suit heavier data users. For example, the South Korea 20GB plan is valid for 30 days and the Asia 100GB plan covers 180 days and includes South Korea along with 17 other countries. Fixed‑data plans can be more cost effective for travelers who need a large amount of high‑speed data.

MobileSIM does not provide an eSIM that includes a local phone number or SMS capability for South Korea. The provider offers only data‑only plans, so travelers using a MobileSIM eSIM in South Korea will need to rely on internet‑based applications—such as WhatsApp, Telegram, or iMessage—to make calls and send messages.

MobileSIM offers 12 single‑country plans and 13 multi‑country plans for South Korea.
The plans range in price from roughly $4.50 to $185 and provide data caps between 1 GB and 100 GB, with validity periods from 3 to 180 days.
Some plans have a fixed data amount for the entire validity, while others impose a daily data cap, limiting the amount you can use each day. The single‑country plans are usable only within South Korea, whereas the multi‑country plans cover a broader spectrum of destinations, giving travellers greater flexibility.