Firsty eSIM Data Plans for South Korea

Firsty offers an unlimited data eSIM for South Korea through its “Firsty Free” plan. The plan grants unlimited high‑speed data for a single day, is free of charge, and includes advertising. While it promises unlimited usage, normal speeds may be capped at 256kbps and can be throttled, especially following heavy use. Users who are concerned about potential speed restrictions should contact Firsty to confirm the fair usage policy and the typical amount of data that remains available at full speed.

Firsty does not offer South Korea eSIM plans that include a phone number or SMS capability. The provider only supplies data‑only eSIMs for the country, so local voice calls and text messages are not possible directly through the plan. Travelers who need to communicate while abroad can rely on data‑based apps such as WhatsApp, Telegram, or iMessage to make calls and send messages over the data connection.

Firsty offers a total of 61 data plans for South Korea, consisting of 60 single-country plans and 1 multi-country plan. The available plans range in price from $0.00 to $102.81 and offer data allowances between 1.5GB and unlimited data. Most plans (58) feature a daily data cap, while a smaller number (3) provide a fixed data amount for the plan’s duration. Some plans may include advertisements or experience reduced speeds after a certain data usage, with speed limits potentially reaching 256 or 5000, and reduced speeds sometimes as low as 512.