Yes. South Korea has the best mobile infrastructure in the world. You will have a continuous, high-speed 4G/5G signal inside the Seoul/Busan subway (stations and tunnels) and on the KTX (high-speed train) as it travels between cities, allowing you to stream video or browse without interruption.
Planning the trip? See our Seoul eSIM plans, install in one tap before you fly, and land online. Free VPN included.
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