South Korea eSIM

Yes, in 5 of 5 compared plans, for example 1 GB, 7 days: VoyaSIM $1.80, Ubigi $3; 5 GB, 30 days: VoyaSIM $6.80, Nomad $10; 10 GB, 30 days: VoyaSIM $9.40, Ubigi $14. Each comparison takes the lowest public list price of Airalo, Nomad, Saily, Ubigi, Yesim for the same data and the same number of days, read on 2026-10-31; the rows we lose are shown on the comparison page too.

The one with enough data for your days, the networks that cover your route and a fair price. VoyaSIM's South Korea plans use LG Uplus, SKTelecom, and in the comparison read on 2026-10-31 they had the lowest price in 5 of 5 same-size plans against Airalo, Nomad, Saily, Ubigi, Yesim; the best-of page ranks every provider.

15 plans from $0.50 up to $28.90. Prices are live from the catalog and every plan page shows the current price, the data amount and the validity.

The plans connect to LG Uplus, SKTelecom, with 4G/LTE and 5G nationwide. Coverage spans Seoul, Busan, Incheon, and Jeju Island. Each plan page lists its networks and whether they offer 3G, 4G or 5G.

South Korea has the fastest mobile networks in the world — even entry-level plans regularly deliver over 100 Mbps in metropolitan areas. 5G is the default.

Yes. The Asia plan covers South Korea and Japan on one eSIM, from $2.40, and switches network at the border.

An eSIM is installed before you fly: no shop to find on arrival, no passport registration, and your own SIM stays in the phone for calls and SMS. A local SIM can be cheaper for stays of several months or when you need a local phone number.

At the first connection to a network in South Korea, not when you buy or install it. Install at home over Wi‑Fi; the days start counting when you land.

The QR code arrives by email within minutes of payment. iPhone: Settings → Cellular → Add eSIM and scan it. Android: Settings → Network & Internet → SIMs → Add eSIM. It takes about two minutes; the help center has the step-by-step version.

Yes. The eSIM carries data only and works next to your own SIM, so your number, WhatsApp, iMessage and banking apps keep working. Switch data roaming off on your home SIM so it never bills you abroad.

Yes, if the phone supports eSIM and is carrier-unlocked. Dial *#06#: if an EID number appears, it supports eSIM. iPhone XS, XR and newer, Google Pixel 3 and newer and recent Samsung Galaxy phones all do; the help center has the full check.

Yes. Every plan allows personal hotspot and tethering, so a laptop or a travel companion's phone can share the eSIM's data. Shared use counts against the same allowance.

14 of 15 South Korea plans can be topped up from My eSIMs; each plan page shows it under “Top-up”. When a plan has no top-up, a second plan installs next to the first. An optional auto top-up refills fixed plans at 90% used and adds days to daily plans before they end. Daily plans get cheaper per day the more days you buy at once.

Yes, in full within 30 days of purchase, as long as the eSIM was never activated. A technical problem that stops activation is refunded too; write to support with your order number.

Write to support@voyasim.io or use the chat on the site. A person replies within 24 hours, in English.