Yes, to seamlessly use a Triply eSIM in Seoul, each smartphone in your group must be unlocked by its home carrier. While most modern phones support eSIM technology, an unlocked device is absolutely essential for it to accept and operate with a new network profile like ours. It's always a good idea for everyone in your crew to double-check their phone's compatibility and unlock status before heading off to South Korea, ensuring a smooth and connected trip for all.
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Does our phones need to be unlocked to use a Triply eSIM in Seoul?
Updated May 30, 2026
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