Three Ways to Keep Your Korean Number While You're Abroad

There are plenty of reasons to keep your Korean number when leaving Korea: bank accounts, KakaoTalk, food-delivery apps, Korean contacts, or just anticipating a return visit. You have three real options.

Quick Answer

Option	Monthly cost	Duration	When you return
Temporary suspension	2,000–3,000 KRW / mo	Up to 3 months × 2/year	Instantly usable
Low-cost retention plan	2,000–5,000 KRW	Indefinite	Already active
eSIM global	5,000–10,000 KRW	Indefinite	Already active

🥇 Option 1: Temporary Suspension (1–6 months)

Cheapest route. Contract stays, line pauses.

Time allowed

• Up to 3 months per suspension
• Typically 2 per year
• Max 6 months per year in total (varies by carrier)

Cost

• All carriers (SKT / KT / LGU+ and MVNOs) charge a monthly fee — typically 2,000–3,000 KRW
• The exact amount varies by carrier; check your carrier's terms or call customer service for confirmation

Process

1. Open your carrier's app, or call customer service
2. Select "Temporary suspension"
3. Set the period (max 3 months)
4. Apply before you fly

Pros

• Cheap, contract intact
• Same number, instantly usable when you lift the suspension

Cons

• Time-limited (max 6 months/year)
• SMS/calls blocked during suspension (KakaoTalk still works over Wi-Fi abroad)

Best for: Returns within 3–6 months.

🥈 Option 2: Downgrade to a Low-Cost Retention Plan

For longer stays abroad — you pay a tiny monthly fee just to keep the number alive.

Typical retention tiers

• Around 2,200–5,500 KRW/month (MVNO)
• Under 1GB data, minimal voice/SMS
• Purpose-built "keep the number" tier

Process

1. Switch your current plan to the cheapest tier before leaving
2. Leave auto-debit running
3. Receive KakaoTalk and app notifications over local Wi-Fi
4. Use roaming briefly if you need to receive an SMS

Pros

• No time limit (keep it for years)
• KakaoTalk / accounts stay fully active

Cons

• Monthly charges continue
• Active use abroad still requires roaming

Best for: 6+ month stays, keeping Korean bank / messenger access.

🥉 Option 3: eSIM Global

Convert your Korean number to an eSIM and run it alongside a local eSIM in another country.

Setup

• Your Korean number → eSIM profile
• Add a local eSIM in the destination country
• Run two numbers on one device

Process

1. Confirm your carrier supports eSIM
2. Request USIM → eSIM conversion before leaving
3. Add a local eSIM once you arrive
4. Set default line for calls/SMS/data

Pros

• Receive Korean SMS verification codes in real time
• Use local data at the same time

Cons

• Requires an eSIM-capable device (iPhone XS+, Galaxy S23+)
• Monthly Korean charges continue + local fees
• Local carrier billing separate

Best for: Digital nomads, frequent Korea round-trips, heavy bank/financial verification use.

Never Do This

Recommendations by Scenario

1–3 month trip

→ Temporary suspension (cheapest)

3–12 month study/exchange

→ Low-cost retention plan + local SIM abroad

1+ year work abroad / relocation

→ eSIM global (keep both) or plan a full number handover, removing every service that depends on the number first

Permanent departure

→ Remove every service link (bank, KakaoTalk, delivery apps), then cancel. Better still: keep a retention plan for 6 months first, then clean up.

Pre-Departure Checklist

One week out

• Inform your carrier of your travel plans
• Top up your auto-debit account
• Switch to your chosen option (suspend / downgrade / eSIM)

Departure day

• If using eSIM: confirm your plan to activate abroad
• Roaming on/off check

After arrival

• Test SMS delivery to your Korean number (unless fully suspended)
• Confirm KakaoTalk still logs in

Summary

• Short trip → Temporary suspension
• Mid-to-long stay → Low-cost retention plan
• Using both countries → eSIM global
• Never just cancel without a plan — the number is gone

Give yourself at least a week to prepare before leaving to avoid losing access.