https://esim.holafly.com/ko/gu....ides-esim/top-best-e
eSIM (Embedded SIM) is a digital SIM card embedded directly into your smartphone, eliminating the need for a physical SIM card. This technology allows users to switch carriers, activate mobile data plans, and make calls directly from their device without the need to insert or remove a physical SIM. The eSIM can hold multiple profiles, meaning you can have more than one mobile network on the same device—ideal for travelers who want to use both local and international mobile services.
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