Who this is for

Use this guide if you want a data-saving backup for maps, messages or travel information while moving around Seoul.

Look for Seoul's official network

Seoul's official public Wi-Fi guidance uses the secure SSID SEOUL_Secure. The city has historically instructed users to enter `seoul` as both the ID and password for the secure network, then trust/configure the secure connection on the device. Once configured, a device can reconnect at compatible Seoul public Wi-Fi locations.

Public Wi-Fi is available in many streets, parks, traditional markets, public facilities and bus-stop areas, but do not assume every corner or every bus uses the same SSID or has a working access point.

What changed in 2026

On April 15, 2026, Seoul announced that it was shifting from simply expanding the network to replacing older equipment and improving speed and stability. The city said 2,020 aging units would be replaced across all 25 districts and that Wi-Fi 7 would be introduced, with tourism-oriented improvements in Myeong-dong, Seongsu and Hangang areas.

That is useful context, but it also means service quality can vary while upgrades are underway.

A practical traveler setup

  1. Keep your SIM/eSIM or roaming data active for time-critical navigation and authentication.
  2. When you see the official Seoul public Wi-Fi network, use the secure network rather than relying on an unknown similarly named hotspot.
  3. Do not use public Wi-Fi as your only connection for airport transfers, reservations, mobile tickets or late-night transport.
  4. If a login screen or certificate prompt looks different from the city's current instructions, stop and use mobile data instead of entering sensitive credentials.

Security and payments

Public Wi-Fi is useful for low-risk browsing, but a network name alone does not prove a hotspot is legitimate. Avoid sending sensitive financial or identity information over a network you cannot verify. For banking, payment changes, passport/immigration forms or account recovery, use a trusted mobile connection when possible.

Where it is most useful

Seoul specifically continues to invest in major visitor areas, Hangang parks and bus-stop infrastructure. Treat the network as a convenient supplement, not a replacement for connectivity you control.