Should I get an eSIM before landing?

Yes if your phone supports eSIM. It gives immediate data for maps, translation, airport transport, and messages.

Do I need a Residence Card for a Korean phone number?

Passport-based prepaid options exist, but many long-term postpaid or full identity-verification plans require a Residence Card.

Is a data-only eSIM enough for banking?

Usually no. Banking OTP and identity verification often require a Korean phone number registered to your identity.

/Korean SIM card and phone number

Last verified 2026-07-01

Korean SIM card and phone number

Phone access is one of the first practical tasks because maps, banking OTPs, deliveries, and local services depend on it.

Use an eSIM or prepaid SIM for arrival data, then switch to a registered Korean number after your Residence Card if you need banking, delivery, and app verification.

TL;DR Answer

Use eSIM or prepaid first; switch to a registered number later.
A Korean number is often required for banking and delivery apps.
MVNO plans can be cheaper once identity verification is available.

Korean SIM card and phone number

TL;DR Answer

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