Free wifi in Korea: a published login, not a portal page

Korea has free public wifi, and the two biggest networks each publish a login for an encrypted version. The national government runs one, the Seoul city government runs the other. Type those logins once and the portal page stops appearing.

Free wifi in Korea: the networks and their logins

These are the main network names on the national and Seoul networks, read from the two governments’ own Korean pages on 5 October 2026.

The first two are the national network, run by the science ministry with the three mobile carriers in community centres, welfare facilities, traditional markets and city buses. The second two are Seoul’s own, across streets, parks, markets and buses in the capital. Seoul also lists a fifth name, SEOUL_Secure_(3), which takes the same seoul login and uses the newer WPA3 security standard. On buses the national open network carries the route number, as Public WiFi Free_ followed by the route, and the ministry’s bus page says the service works on buses showing its poster.

Other local governments run networks of their own. Jeju’s is Jeju Free Wifi, across tourist sites, parks, markets, Olle trails, bus stops and buses on the island. Jeju’s page gives no encrypted name or login, so treat it as a portal network.

The logins are not a secret, and that is the point of them. Both governments print them on their own pages so that anyone, visitor included, can use the encrypted version.

Is wifi free in South Korea?

The public wifi is free, and the login page is optional. The open networks, Public WiFi Free and SEOUL, put a portal page in front of you: Seoul says the SEOUL portal opens by itself and you press the connect button each time, and the national guide says to open a browser and press a service button on its access screen. The national FAQ adds that Public WiFi Free ends each session after one hour, after which you can connect again.

The encrypted networks skip all of that. The national guide says that once you are on Public WiFi Secure, you open the browser and the internet simply works, with no access screen in between. Seoul says SEOUL_Secure connects by itself at every location once you have joined it a single time.

So the portal page on every bus is optional. The encrypted network is the quicker way in, and nobody hid it. It sits under “use it safely” on the ministry’s site, filed as a security feature rather than a shortcut.

How to get free wifi in Korea: set up both once

Set up both encrypted networks once, while you have some other connection to read these steps on. Seoul runs one network and the national government the other, and a phone that knows both logins can join whichever one is in range.

Public WiFi Secure on an iPhone

1. In Settings, Wi-Fi, choose Public WiFi Secure.
2. User name wifi, password wifi, then Join.
3. Tap Trust when the certificate appears.

Public WiFi Secure on Android

1. Choose Public WiFi Secure. Set the EAP method to PEAP.
2. Identity wifi, password wifi.
3. The CA certificate field is where the national page gives two versions. The short one sets it to “do not validate” and connects. The longer one chooses “use system certificates”, sets online certificate status to “do not validate”, and enters the domain wifisecure.kr before connecting.

The page does not say which to prefer. The short version is the one that skips checking the certificate, so use the longer one if your phone offers the domain field. Menu names differ between Android makers, so look for those fields rather than the exact wording.

SEOUL_Secure on either phone

Choose SEOUL_Secure or SEOUL_Secure_(3), enter seoul as the user name and seoul as the password, and join. Seoul’s page gives the login and stops there. It does not print phone settings the way the national page does. So if an Android phone asks SEOUL_Secure for more than a user name and password, treat the open SEOUL network as the way in there: Seoul’s page says it needs only a press of the connect button on its portal.

Is free wifi in Korea safe?

The encrypted networks are the ones both governments point you to. The ministry’s “use it safely” page describes Public WiFi Secure as a service that encrypts the data you send over wifi so that it can be used safely, and Seoul marks SEOUL_Secure as the recommended way in. The national FAQ tells users not to bank on wifi with no security settings, and to stick to networks whose provider is known.

A login printed on a government website looks like no protection at all. It is printed on purpose: what the ministry offers on that network is encryption, not a closed door, and its page describes the service as encryption. Treat the open names, Public WiFi Free and SEOUL, as the ones not to bank on, and keep banking for mobile data if you have it.

Does Korea have free wifi on buses?

Yes, on city buses across the country. The ministry’s bus page names the networks as Public WiFi Free_ plus the route number and Public WiFi Secure, on buses showing its poster. Two news reports from July 2026 say the National Information Society Agency, which runs the national service, named LG U+ preferred bidder to supply wifi on 32,857 city buses outside Jeju. Asia Economy gives the service period as September 2026 to the end of August 2030, with Wi-Fi 7 equipment and 300GB of data per bus a month.

That answers a warning that is still easy to find. The Electronic Times reported in November 2025 that the 2026 budget for bus wifi had gone to parliament about 20% lower, and that about 9,000 of roughly 29,000 bus units could stop, rural areas first. The July reports came later, so treat bus wifi outside Jeju as continuing. A preferred bidder is the stage before a signed contract, and this page found no signed contract.

Jeju is outside that deal because Jeju runs its own network. Jeju’s page lists buses among the places Jeju Free Wifi covers. Seoul’s how-to page likewise lists city and village buses among the places Seoul’s network reaches, alongside streets, markets, parks and bus stops.

Can you travel Korea on free wifi alone?

For a city trip, some of the time. Public wifi only exists where a government has put an access point: a bus, a market, a public building, a Seoul street. Away from those, and at the moment a booking app wants a code by text message, it cannot help. A traveller who needs a Korean number for an app is solving a different problem, and the eSIM or SIM card page covers which one gives you that.

The useful combination for a short stay is a data plan for the gaps and the two encrypted logins for everywhere else. The logins cost nothing to save.

What is not checked here

The logins, the network names, the phone settings and the one-hour limit come from the national service’s own Korean pages and Seoul’s own page, which shows a modification date of 12 March 2026. All were read on 5 October 2026.

Neither government says whether Public WiFi Secure has a session limit like the open network’s hour. The FAQ attaches the limit to Public WiFi Free by name, so treat the encrypted network as limit-free until it drops you.

Seoul’s 34,000 figure comes from a February 2025 announcement, so treat it as a 2025 count. The bus operator choice comes from July 2026 news reports rather than from the agency’s own notice, which this page did not find. The reports give the service period but not when each bus gets the new equipment, so treat Wi-Fi 7 on any one bus as arriving rather than arrived. Whether Jeju Free Wifi has an encrypted name or a session limit is not on Jeju’s page.

The language of the portal pages, and whether a foreign phone sees an English version, is not confirmed here. Wifi at the airports and in the subway is not checked here either.

If a login stops working, or you find a bus or a building where neither network appears, tell me and this page will say so with a date.