Which networks does a Talisim South Korea eSIM use?

Our South Korea plans run on SKTelecom, LG Uplus, at up to 3G, 4G, 5G; a given plan may use only some of them. Each plan on the South Korea page lists the networks it uses.

Can I top up a South Korea eSIM?

Yes. Most South Korea plans can be topped up with more data and days from your order page until they expire, on the same eSIM with no new QR code.

South Korea travel guide: mobile data, networks and what's on

34 South Korea plans from $0.60.

Talisim editorial team · Updated 30 October 2026

Quick answer

Talisim sells 34 South Korea eSIM plans from $0.60, 7–30 days, 100MB–50GB, up to 3G, 4G, 5G, on SKTelecom, LG Uplus. Top-ups: yes, on most plans. Data only: no phone number, calls or texts. WhatsApp, FaceTime, Signal and iMessage work over data. Hotspot and tethering work, as far as your phone allows, and use the same data.

A postcard from South Korea: Tali, the Talisim eSIM character, in local costume among the sights

What the network is actually like

5G covers Seoul, Busan and the other cities, and signal holds underground on the Seoul subway. Expect gaps on mountain hikes. Free 'Public WiFi' runs in stations, on buses and in markets.

This eSIM: up to 3G, 4G, 5G, onSKTelecom, LG Uplus. Each plan on the South Korea page says which of these it uses.

How much data you'll need

10GB covers a fortnight. Install Naver Map before you go, set to English, for walking and transit directions. Add Kakao T for taxis and KakaoTalk for messages.

Recommended: 10GB → closest plan 10GB · 30 days, $9.40.

Where people go

Seoul

A huge subway network, and your phone keeps signal in the tunnels.
Busan

Port city with Haeundae and Gwangalli beaches. Under three hours from Seoul by KTX.
Jeju

Volcanic island with Hallasan in the middle. Gimpo to Jeju is the world's busiest air route.
Gyeongju

The old Silla capital, with royal burial mounds in the town centre.
Jeonju

Over 800 hanok in the old quarter. Jeonju bibimbap is the dish to order.

What's on

Timings are month-level, because most of these move year to year.

Jinhae Gunhangje

Late March to early April

Jinhae, in Changwon

About 360,000 cherry trees in bloom. Weekends and evenings are the most crowded.
Boryeong Mud Festival

July, sometimes running into August

Daecheon Beach, Boryeong

Mud pools and mud slides on the beach. Bring a waterproof pouch for your phone.
Chuseok

September or early October, set by the lunar calendar

Nationwide

Three-day harvest holiday. Trains and buses sell out, and the Seoul palaces are free to enter.

Quick answers

Which networks does a Talisim South Korea eSIM use?: Our South Korea plans run on SKTelecom, LG Uplus, at up to 3G, 4G, 5G; a given plan may use only some of them. Each plan on the South Korea page lists the networks it uses.
Can I top up a South Korea eSIM?: Yes. Most South Korea plans can be topped up with more data and days from your order page until they expire, on the same eSIM with no new QR code.
Does a South Korea eSIM come with a phone number?: No. Data only: no phone number, calls or texts. WhatsApp, FaceTime, Signal and iMessage work over data.
How much data do I need for South Korea?: 10GB covers a fortnight. Install Naver Map before you go, set to English, for walking and transit directions. Add Kakao T for taxis and KakaoTalk for messages.

Regional plans that also cover South Korea

Crossing a border on the same trip? One of these covers the whole route on one eSIM.

Japan & South Korea 2 destinations from $2.16 Asia 14 destinations from $1.88 Asia incl. China & Singapore 19 destinations from $7.20 Global 117 destinations from $9.20 Global Plus 127 destinations from $10.64

Other guides nearby

New to eSIMs? The FAQ covers checking your phone supports one, installing it before you fly, and what to do if it won't connect.