How fast is Korea's 5G eSIM? +
South Korea consistently ranks #1 globally for 5G speeds. Average 5G download speeds exceed 400 Mbps in Seoul. You can stream 4K video, video call in HD, and upload photos instantly from anywhere in the city.
Does Korea eSIM work in the Seoul Metro? +
Yes. Seoul's subway system has complete 4G/LTE coverage in all stations and tunnels — even underground. You'll never lose signal on the Seoul Metro, including Line 2 and the Airport Express to Incheon.
Will Korea eSIM work in Jeju Island? +
Yes, Jeju Island has full SK Telecom and KT 4G/5G coverage. All tourist areas, Hallasan mountain trails (lower sections), beaches, and towns are well covered.
Is Korea eSIM compatible with eSIM-locked phones? +
Some carrier-locked phones (purchased through a US, UK, or Korean carrier on contract) may be locked to their home network. If your phone is carrier-locked, contact your carrier to unlock it before purchasing a travel eSIM. Unlocked and factory-unlocked phones work with any eSIM.