Can I expect continuous internet coverage with Truly Roaming while traveling on the KTX high-speed train or within the Seoul Subway?

Yes, South Korea boasts world-class mobile infrastructure, and Truly Roaming leverages this to provide continuous, high-speed 4G/5G connectivity. You'll maintain a strong signal not only throughout the Seoul and Busan subway systems (including tunnels) but also on the KTX high-speed train as it traverses the country. This means you can stay productive, attend virtual meetings, or stream content without interruption, whether commuting across Seoul or traveling between cities for a change of scenery.