Phone Plan in Korea for Foreigners: Prepaid, Postpaid, MVNO

Yes, foreigners can get a phone line in Korea. If you have registered as a foreign resident, the basic route is to take your alien registration card and passport to a carrier shop or an MVNO (budget carrier). People who plan to stay long usually take a postpaid plan, and people staying 90 days or less often use a prepaid plan with just a passport. The required documents and conditions differ by carrier, plan and shop, so it pays to check before you go.

Two choices to make before documents

First decide where to sign up and how you will pay. The documents you need depend on these two choices.

• The big three (SKT, KT, LG U+) → shops across the country, and you can buy a new phone on installments at the same time. Whether staff can help in your language differs from shop to shop
• MVNOs (budget carriers) → they rent the big three's networks and are usually cheaper. Whether they accept foreign customers differs by company and by plan
• Postpaid → you use the service for a month and then pay. You normally need automatic payment from a bank account or card in your own name
• Prepaid → you use only what you top up in advance. There is no credit check or contract, which suits short stays, but buying a phone on installments is limited

If you are preparing for naturalization you will be living in Korea for a long time, so postpaid usually fits. If you have just registered and have no bank account in your own name yet, you can start with prepaid and move to postpaid after you open an account. Opening an account is covered in our article on bank accounts for foreigners.

What to bring to the shop

Documents differ a little between carriers and shops. The basics are below. Call the shop first so you do not make a wasted trip over one missing document.

• Alien registration card → the ID of a long-term resident who has registered
• Passport → bring the original, with plenty of validity left
• A bank account or card in your own name → for automatic payment of a postpaid bill. Some shops also ask for a copy of the bankbook
• If someone goes for you → you often need a power of attorney and the agent's own ID. Go in person if you can

Recently, to stop phones being opened in other people's names, a step that compares the photo on your ID with your face has been coming in at activation. How it works, when it applies and what alternative a foreigner has can differ by carrier, so ask before you go.

If your stay is short or you have no card yet

If you are staying 90 days or less, or your alien registration card has not been issued yet, some providers offer a prepaid SIM or plan with only a passport. A postpaid plan is hard in this case, and phone installments are limited. Look into postpaid once you have registered. The registration steps are in our article on the alien registration card.

There is a reason to get a number early: many bank apps and government websites use a phone number in your own name for identity checks. How far foreigners can use these checks differs by service, so if you get stuck, ask that service's customer center or the 1345 Immigration Contact Center.

After you open the line

• Stop lines being opened in your name without you knowing → there is an identity-theft prevention service (M-Safer, msafer.or.kr) that tells you which lines exist in your name and can block new sign-ups. We could not confirm whether it works with an alien registration number, so ask M-Safer or your carrier first
• Never hand over a number opened in your name → these are the so-called "burner phones". You can be punished, and it can count against you when your conduct is reviewed for naturalization
• Settle up before you cancel or leave Korea → unpaid bills and the remaining phone installments do not disappear when you cancel. Clear them first
• Read the terms → some plans have a contract period and a penalty for cancelling early. Ask about any sentence you do not understand before you sign

Do not let limited Korean become a weakness in the contract. After you sign, "I did not know" does not work, so if you need help, take someone who can interpret.

It also comes up in the interview

The naturalization interview also asks about the offices and numbers that help foreigners. Our practice questions include these. The questions are in Korean, as in the real interview.

외국인종합안내센터의 대표 전화번호는 무엇입니까? — 1345

외국인이 귀화 관련 민원을 주로 처리하는 기관은 어디입니까? — 출입국·외국인관서

Knowing a number is enough on paper, but in the interview you have to say it aloud in one go. Our service plays questions like these in an interviewer's voice and lets you practice answering out loud.

This article is not legal advice. Plans, documents and ID-check methods can change and every provider is different. Before you sign up, check the current guidance with the carrier or MVNO customer center, the 1345 Immigration Contact Center, or HiKorea (hikorea.go.kr).