Island, South Korea
Internet in Jeju: speed, SIM cards and coworking
Is the internet good in Jeju?
Median fixed broadband in South Korea is 251 Mbps and mobile is 251 Mbps (Speedtest Global Index, 2026-08). Café wifi is generally fine; the island has some workation cafés and guesthouses aimed at remote workers.
Getting online in Jeju
| Details | |
|---|---|
| Home fibre | Fibre from KT, SK Broadband and LG U+ in Jeju City and most villages; about 25,000–40,000 KRW a month. |
| Cafés and coworking | Café wifi is generally fine; the island has some workation cafés and guesthouses aimed at remote workers. |
| Outages | Storms can knock out power and internet in rural areas |
| Tourist SIM | Carrier counters at Incheon and Gimpo airports sell prepaid data SIMs and eSIMs; passport required; convenience stores sell some too. |
| eSIM | Local carriers sell eSIMs to visitors. |
| Carriers | SK Telecom, KT, LG U+ |
| Monthly data plan | ₩30,000–55,000 ($22–41) |
| Blocked services | Porn and North Korean websites are blocked; VPNs are legal. |
Coworking in Jeju
There's no dedicated coworking scene here; people work from cafés and accommodation.
Internet speeds in East Asia
National medians, Speedtest Global Index.
| Country | Fixed | Mobile |
|---|---|---|
| Hong Kong | 362 Mbps | 89 Mbps |
| Macau | 322 Mbps | — |
| Taiwan | 298 Mbps | 111 Mbps |
| South Korea | 251 Mbps | 251 Mbps |
| China | 238 Mbps | 176 Mbps |
| Japan | 234 Mbps | 66 Mbps |
| Mongolia | 86 Mbps | — |
Quick answers
Is the internet fast in Jeju?
Median fixed broadband in South Korea is 251 Mbps and mobile is 251 Mbps (Speedtest Global Index, 2026-08). Café wifi is generally fine; the island has some workation cafés and guesthouses aimed at remote workers.
Which SIM card should I get in Jeju?
Carrier counters at Incheon and Gimpo airports sell prepaid data SIMs and eSIMs; passport required; convenience stores sell some too.
Can I use an eSIM in South Korea?
Yes. Local carriers sell eSIMs to visitors, and travel eSIMs work too.
More about Jeju
Going to Jeju solo?
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Sources
- Speedtest Global Index: South Korea
- SK Telecom
- KT
- LG U+
- Visit Jeju
- Jeju International Airport (Korea Airports Corporation)
- Jeju Olle Trail
Speeds are medians from Ookla's Speedtest Global Index, cited for reference. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.