How to Activate a Korean SIM Card and Mobile Phone

Foreigner’s Guide to Korean Mobile Phones and SIM Cards

Prepaid SIM (Short-term Stay)
– Can be purchased immediately at the airport arrival floor. Only a passport is needed.
– Various options: KT, SKT, U+, budget phones, etc.
– Data plans available for 7, 30, or 90 days.
– Approximately 20,000-50,000 won.
– Must verify whether calls (incoming/outgoing) are included.

Postpaid SIM (Long-term Stay)
– Required: Alien Registration Card + Passport + Bank Account (for automatic payment)
– Visit a telecom provider branch.
– Unlimited data plans available for approximately 30,000-60,000 won per month.

Budget Phone Recommendation
– Hello Mobile, KT M-Mobile, U+ Budget Mobile: Same quality at lower rates. Foreigners can also activate these services.