South Korea
Nationwide coverage
Data across South Korea — Seoul's night markets, the Busan beaches, the KTX between them. One of the fastest, most complete mobile networks on the planet.
- 5G where available
- No roaming charges
- Instant eSIM delivery
- Keep your number
eSIM + QR code emailed instantly · no physical SIM
Among the best coverage in the world
Your eSIM connects to SK Telecom and LG U+, both on 5G. South Korea consistently ranks at or near the top of global mobile speed and coverage tables, and the experience matches the statistics.
Seoul, Busan, Jeju, Gyeongju and effectively everywhere in between are comprehensively covered — including the subway systems, road tunnels and the mountain national parks. Finding somewhere in South Korea without signal takes genuine effort.
The metro, the KTX and the mountains
Seoul's subway has full coverage across every line, including deep tunnels, and free Wi-Fi on most trains besides. The KTX high-speed line holds signal for essentially its whole run.
Even Seoraksan and Jirisan national parks have coverage across most trails, which is unusual for mountain terrain and reflects how thoroughly the country is networked. Jeju island is equally well served.
How much data
A week in Seoul with translation, maps and Naver or KakaoMap running wants 3 GB. Two weeks including Busan and Jeju suits 5 GB at £4.99. Note that free public Wi-Fi is genuinely everywhere here, so many visitors use less than expected.
Good to know
Questions, answered
Does it work on the Seoul subway?+
Yes, across every line including the deepest tunnels. Korean networks cover the entire underground system, and most trains carry free Wi-Fi as well.
Do I need it, given how much free Wi-Fi there is?+
Public Wi-Fi is genuinely widespread, but it needs joining network by network and doesn't follow you between them. For live maps, translation and ride-hailing while moving, mobile data is far less hassle — and plans start at £1.99.
How do I install it?+
After checkout we email your eSIM and a QR code. Scan it in your phone's settings, switch the line on, and you're ready — do it before you fly and it activates when you land.
Will it work on my phone?+
Most phones from the last few years support eSIM (iPhone XS and newer, recent Samsung/Pixel). Check your phone in Settings, or use our compatibility checker.
When does my plan start?+
Validity counts from first connection in the destination, not from purchase — so you can buy and install early without wasting days.
Can I keep using my normal number?+
Yes. The eSIM is data-only and runs alongside your usual SIM, so calls and texts on your main number still work.
Networks
Your eSIM hops onto the strongest of South Korea’s local networks automatically — no setup, no choosing.
Coverage
Full nationwide data across South Korea on tier-1 partner networks.