Do You Need a Passport for a Korea Airport SIM?
CONNECT ON Inc. · How we verify · sources read SEP 9, 2026
Highlights
The short answer
Any traveller planning to buy a prepaid SIM at Incheon Airport should bring their passport along: KT's prepaid SIM is sold exclusively to foreigners visiting Korea, and requires a passport or an alien registration certificate to purchase. Without one of those two documents, the purchase cannot go through at the counter, checked carefully against the current KT roaming product page.
SIM, eSIM & Connectivity · Data · Numbers · Wi-FiPhotograph: K Travel Way
Do I need my passport to buy a prepaid SIM at Incheon Airport?
Yes. Exclusively for foreigners visiting Korea; requires a passport or alien registration certificate
What if I don't have my passport with me?
An alien registration certificate is the only other document confirmed to work in its place; without either one, this page cannot confirm any other accepted form of ID for the purchase.
Does this apply to eSIMs too, or just physical SIM cards?
The passport or alien registration requirement is stated on the same operator page as the physical prepaid SIM; this page treats it as the general identity requirement for KT's foreigner-only roaming products rather than something unique to one product type.
Questions people ask
Can someone else buy the SIM on my behalf with their own passport?
This page has no confirmed information on third-party purchases; the stated requirement is a passport or alien registration certificate, without specifying whose it must be.
