First Week in Korea: Getting a Phone Plan and a T-money Card

A Korean phone number and a transport card are two of the first things most newcomers sort out. Here is a simple overview of how both usually work.

Phone: prepaid first, postpaid later

Prepaid SIM or eSIM: you can usually get one with just your passport, at the airport, from the major carriers or from budget providers (often called MVNOs or 알뜰폰). This is the easiest option right after arrival.

Postpaid (monthly) plans: these usually require your residence card, and often a Korean bank account or card for payment. Requirements vary by carrier and shop, so bring your passport, residence card and bank details when you go.

Why a Korean number matters

Many Korean websites and apps use phone-based identity verification (본인인증) for sign-up, banking, deliveries and payments. This usually works only with a number registered in your own name, which is one reason many people move to a plan in their name once they have a residence card.

T-money: one card for buses and subways

• Where to buy: convenience stores such as GS25, CU and 7-Eleven, and at subway stations.
• How to top up: with cash at convenience stores or at the recharge machines in subway stations.
• Where it works: subways and buses in Seoul and in many other cities, and in many taxis.

Tap your card when you get on and again when you get off the bus. That way transfers between buses and the subway within the allowed time are counted correctly and you get the transfer discount.

Helpful official resources

• VisitKorea — the official tourism site, with transport and travel information in several languages.
• Korea Travel Hotline: dial 1330 for tourist information and interpretation in several languages.

Once you are settled, CampusDown's travel and money tips sections (in Korean) are a good next read.