How to Get a Phone Number and Mobile Plan in Korea

Essential guide for foreigners living in Korea.

Getting a phone number in Korea is one of the first—and most important—steps for living comfortably.

You need it for:

• Banking
• Delivery apps
• Transportation cards
• Online shopping
• Messaging apps (especially KakaoTalk)
• Signing contracts
• Everyday communication

But the process can feel confusing for newcomers.

This guide breaks down everything you need to know.

📱 1. Types of Mobile Plans in Korea

Korea has three main telecom giants:

• SK Telecom (SKT)
• KT
• LG U+

These are the major carriers with the widest coverage.

But there’s also a huge market of MVNO (알뜰폰) providers—cheaper plans using the big carriers’ networks.

✔ Major carriers (통신사)

Pros:

• Best coverage
• Fastest speeds
• Easy customer service

Cons:

• More expensive

✔ MVNO / Budget carriers (알뜰폰)

Examples:

• KT M Mobile
• U+ Uplus Mobile
• SK7 Mobile
• LG Hello Mobile

Pros:

• Very cheap
• Flexible plans
• Easy sign-up

Cons:

• Customer service varies
• Some plans require Korean ID

🪪 2. What You Need to Get a Phone Number

Requirements depend on your visa type.

✔ If you have an ARC (Alien Registration Card)

You can get:

• Any major carrier plan
• Any MVNO plan
• Long-term contracts
• Monthly billing

This is the easiest situation.

✔ If you don’t have an ARC yet

You can still get:

• Prepaid SIM
• Short-term plans
• Tourist SIM

These work until your ARC is issued.

📶 3. Types of SIM Options

✔ 1) Prepaid SIM (선불 심카드)

Best for:

• New arrivals
• Short-term visitors
• People waiting for ARC

Features:

• No contract
• Pay as you go
• Easy to buy at airports, convenience stores, telecom shops

✔ 2) Postpaid SIM (후불 요금제)

Best for:

• Long-term residents
• Students
• Workers

Features:

• Monthly billing
• Cheaper long-term
• Requires ARC

✔ 3) eSIM

Korea supports eSIM widely.

You can activate it:

• Online
• At telecom shops
• At airports

Fast and convenient.

🏬 4. Where to Buy a SIM or Mobile Plan

✔ 1) Airport (Incheon, Gimpo)

Easiest place for newcomers.

You’ll find:

• KT Roaming Center
• SKT Roaming
• LG U+ counters
• Prepaid SIM booths

✔ 2) Telecom stores (SKT / KT / LG U+)

Best for long-term contracts.

✔ 3) Convenience stores (GS25, CU, 7-Eleven)

You can buy:

• Prepaid SIM
• MVNO SIM
• Simple activation kits

✔ 4) Online (for MVNO)

Many budget carriers allow:

• Online sign-up
• Delivery of SIM
• eSIM activation

💸 5. Typical Prices in Korea

✔ Major carriers

• 40,000–70,000 KRW/month
• Unlimited data plans available
• Best coverage

✔ MVNO (알뜰폰)

• 10,000–30,000 KRW/month
• Very cheap data plans
• Perfect for students or budget living

✔ Prepaid SIM

• 20,000–60,000 KRW depending on data
• Good for short-term use

📲 6. How to Activate Your SIM

✔ Step-by-step:

1. Insert SIM or activate eSIM
2. Restart your phone
3. Register your passport or ARC
4. Choose your plan
5. Confirm your phone number
6. Install carrier APN settings (usually automatic)

Most shops will do this for you.

💬 7. Why You Need a Korean Phone Number Immediately

A Korean number is essential for:

• KakaoTalk (main messaging app)
• Naver Maps & Kakao Maps
• Coupang (online shopping)
• Baemin & Yogiyo (food delivery)
• Banking apps
• Transportation cards (T-Money recharge)
• Apartment access systems
• Work communication

Without a Korean number, daily life becomes difficult.

🧭 8. Tips for Foreigners

✔ Bring an unlocked phone

Korean carriers require unlocked devices.

✔ MVNO is usually the best value

Same network, cheaper price.

✔ Get a prepaid SIM first

Then switch to postpaid after receiving your ARC.

✔ Keep your passport handy

You’ll need it for registration.

✔ Avoid long-term contracts until you’re settled

Some require cancellation fees.

⭐ Getting a Korean Phone Number Is Easy Once You Know the System

The process may seem confusing at first, but once you understand the options—prepaid, postpaid, MVNO, and major carriers—it becomes simple.

With the right plan, you’ll be ready to:

• Use Korean apps
• Navigate the city
• Communicate easily
• Live comfortably

A Korean phone number is the first step to truly living in Korea.