# Getting a SIM Card & Phone Number in Korea: Foreigner Guide

> How to get a Korean SIM card and phone number as a foreigner. Prepaid vs postpaid vs budget MVNO plans, what documents you need, where to buy, and tips for your first week.

Canonical: https://setkora.com/guides/korea-sim-card-phone-guide (also in 15 languages: https://setkora.com/guides/<lang>/korea-sim-card-phone-guide)

A Korean phone number is the first thing to sort out after landing. You need it for bank accounts, deliveries, apps, and almost every signup in Korea. The good news: getting a SIM as a foreigner is straightforward once you know the three plan types and which documents each one needs. Here's the practical version.

## Why you need a Korean number (not just roaming)

Roaming or an eSIM from home keeps you online, but most Korean services require a **local number that can receive verification texts** registered to your identity: bank apps, KakaoTalk features, food delivery, government sites, and rental or housing contracts. Sorting out a real Korean SIM early makes everything after it easier.

## The three plan types

- **Prepaid SIM**: pay first, no contract. Easiest to get right after arrival (often with just a passport). Good as a bridge for your first weeks.
- **Postpaid plan (major carriers)**: SK Telecom, KT, LG U+. Full service and best coverage support, but usually requires an **ARC (Alien Registration Card)** and sometimes a Korean bank account or card for auto-payment.
- **MVNO / budget plans (알뜰폰)**: smaller providers that rent the big carriers' networks. Same coverage, often **much cheaper monthly fees**, and many can be ordered online. Most also require an ARC.
A common path: **prepaid SIM at the airport → switch to an MVNO plan once your ARC is issued**.

## What documents you need

- **Prepaid**: usually your **passport** is enough.
- **Postpaid / MVNO**: usually your **ARC**; some providers also ask for a Korean bank account or card for auto-payment.
Requirements differ by provider and can change. Check the provider's current conditions before you go. If you haven't received your ARC yet, start with prepaid.

## Where to buy

- **Airport counters** (Incheon/Gimpo): prepaid SIMs and tourist plans right after landing.
- **Convenience stores**: some chains sell prepaid SIM kits you activate online.
- **Carrier & MVNO shops**: in every neighborhood; bring your documents.
- **Online**: many MVNOs let you order a SIM or eSIM online with ARC verification and have it delivered.

## Tips that save headaches

- **Keep your number stable**: many services tie your account to your phone number, so avoid changing it often.
- **eSIM**: increasingly supported; handy if your phone is dual-SIM and you want to keep your home number active.
- **Check your phone is unlocked** before arrival.
- **Contract phones vs SIM-only**: buying a device on installment usually needs an ARC and a longer commitment; SIM-only plans keep you flexible.

## Next step after your phone works: set up your home

Once you have a Korean number, the next two setup tasks are usually [home internet](https://setkora.com/guides/home-internet-korea-foreigners) and furnishing your place. For appliances and furniture, most people in Korea **rent monthly instead of buying**. Fridges, washing machines, water purifiers, beds and more, with installation included and no big upfront cost. SETKORA lets you browse and apply in 15 languages, and we handle the Korean-language side for you.

## FAQ

**Q: Can I get a Korean SIM card without an ARC?**
A: Yes. Prepaid SIMs can generally be activated with just a passport. Postpaid and most budget MVNO plans require an ARC, so many people use prepaid until their ARC is issued.

**Q: Are budget (알뜰폰/MVNO) plans really the same network?**
A: Yes. MVNOs rent the networks of the three major carriers, so coverage is the same. The difference is price and customer-service channels (often online-first).

**Q: Do I need a Korean phone number to rent appliances?**
A: Practically yes. Providers confirm your rental application and installation schedule by phone. Any working Korean number (prepaid included) is fine to start.