PREPAID · WALK-IN READY

Just your passport. That’s all you need to start.

✓Passport — that’s it
×No ARC required
✓5G — activated today

See Welcome Plans 📞 1644-4570

Passport

HOLDER / NAME

Republic of Korea entry — OK

KT Prepaid USIM

Ready to activate

ACTIVATED ✓

PLANS · 30-DAY CYCLE

Choose your Welcome plan.

Three flat-rate prepaid plans. Same activation, same network — different data caps.

Welcome 3

Daily use

₩45,000 / 30 days

Data3 GB · 5G
After cap3 Mbps
Voice200 min
SMS200

Best Value

Welcome 5

For most travelers

₩55,000 / 30 days

Data5 GB · 5G
After cap5 Mbps
Voice200 min
SMS200

Welcome 1

Light use

₩35,000 / 30 days

Data1 GB · 5G
After cap1 Mbps
Voice200 min
SMS200

USIM card ₩7,700 (one-time, separate)

AFTER-CAP SPEED GUIDE

What you can do at each speed.

Even after your high-speed data is used up, your line stays connected at the after-cap speed — never disconnected.

Speed

Video

Music

Web · SNS

⚡ Fast

5Mbps

720p HD ✓

Smooth streaming

Fast loading

3Mbps

480p SD

Smooth

🐢 Slow

1Mbps

240p only

Buffering

Text only

★ MEGA TELECOM EXCLUSIVE

Switch to postpaid later,
get 3 months back.

Start prepaid with passport. Get ARC. Convert with the same number — up to 3 months of prepaid charges credited back to your KT account.

Activate prepaid

Walk in with your passport. Pick a Welcome plan. Line active in minutes.

→

Get your ARC

Continue using KT while you wait for your Alien Registration Card.

→

Convert to postpaid

Same number, same line. Up to 3 months of prepaid charges credited back.

Example

Welcome 5 (₩55,000) × 3 months pre-charged

−₩165,000

Available at all 4 Mega Telecom stores: Itaewon · Sindang · Dongbu-Ichon · Sookmyung Univ.

RECHARGE METHODS

Three easy ways to top up.

Reload your balance from anywhere — by phone, online, or at any KT store.

📞

ARS (by phone)

1500Free from KT lines
010-7201-1500Paid call from any phone
Available 24/7

💻

Online · kt.com

kt.comCredit card · Prepaid card
Check balance anytime
Recharge in seconds

🏪

Visit KT store

3,000+ storesNationwide
Cash · Card · Bank transfer
Staff assistance

VALIDITY PERIOD

Bigger top-ups last longer.

Each top-up extends your line’s active period. Larger amounts get exponentially more time.

Charge amount

Validity

Days

₩5,000

30days

₩10,000

60days

₩20,000

120days

₩30,000–35,000

180days

₩40,000–45,000

240days

₩50,000–55,000

365days

FAQ

Common questions, answered.

Everything you might want to confirm before walking in.

Do I really need an ARC to sign up?

No — your passport is enough for a prepaid line. ARC-less lines are valid for 90 days only. If you stay longer and get your ARC, you can keep the same number and switch to postpaid (see the Mega Telecom refund benefit above).

Can I use eSIM instead of a physical SIM?

No, prepaid is physical USIM only. Check your phone has a SIM slot — some US iPhones are sold eSIM-only and won’t accept our prepaid USIM.

What is the postpaid conversion refund benefit?

A Mega Telecom exclusive: when you convert your prepaid line to a KT postpaid plan using the same number, we credit back up to 3 months of your prepaid charges to your KT account. Available at all 4 of our stores — just mention it at signup.

What happens when I leave Korea?

Your line auto-suspends when validity expires. When you return, just visit any of our stores with your passport to reactivate the same number.

What if my balance runs out or validity expires?

Service tapers in stages:

Day 0: Outgoing calls and texts stop
Day 14: All service (incoming included) stops
Day 44: Line terminated. Number returned to KT pool.

Remaining balance is not refunded. Top up before Day 44 to keep the same number.

What are the rates if I exceed my plan?

Beyond your monthly quota (VAT included):

Voice: ₩1.98 / second
Video call: ₩3.3 / second
SMS: ₩22 each
LMS (long message): ₩33 each
MMS (with image): ₩220 each

Data has no overage charge — you continue at the after-cap speed instead.

Come in with your passport —
leave with a working line.

Multilingual staff at our Itaewon Global Store. All 4 locations support foreign customers.

📍 Itaewon Station 📍 Sindang 📍 Dongbu-Ichon 📍 Sookmyung Univ. Station

View store locations 📞 02-2790-4577 💬 WhatsApp Chat