Overseas eSIM guide

eSIM for South Korea

Data-only eSIM for travel, business or study in South Korea. Set it up on your phone before departure and get online as soon as you arrive.

See South Korea plansFrom From 0.50 USD / 7 days

By Bloomy eSIM ・ Plan data updated: Apr 15, 2026

  • South Korea coverage
  • Data-only (voice/SMS may not be supported)
  • QR or manual setup (prepare over Wi-Fi before you go)
  • Turn on mobile data after arrival to start using it

What this page covers

  • Recommended plans
  • How to choose data
  • How to set up
  • If it won't connect
  • FAQ

Why use an eSIM in South Korea

  • No hunting for a physical SIM at the airport—set it up on your phone before you go
  • Keep your home SIM in place and just add an overseas data plan
  • Use maps, ride-hailing, messaging and translation apps right after arrival
  • Choose data and days to fit anything from short trips to long stays

Recommended eSIM plans for South Korea

South Korea 0.1GB 7Days — 0.50 USD / 7 daysSouth Korea 0.5GB 1Day — 0.56 USD / 1 daySouth Korea 0.5GB 7Days — 0.56 USD / 7 daysSouth Korea 0.5GB 1Day (nonhkip) — 0.67 USD / 1 daySouth Korea 1GB 7Days — 0.98 USD / 7 daysSouth Korea 1GB 1Day FUP1Mbps — 1.12 USD / 1 daySouth Korea 1GB 1Day FUP1Mbps (nonhkip) — 1.16 USD / 1 daySouth Korea 1GB 1Day (nonhkip) — 1.16 USD / 1 daySouth Korea 1GB 1Day — 1.12 USD / 1 daySouth Korea 1GB 7Days (nonhkip) — 1.29 USD / 7 daysSouth Korea 2GB 1Day (nonhkip) — 2.03 USD / 1 daySouth Korea 2GB 1Day FUP1Mbps — 2.10 USD / 1 day

Compare all South Korea plans

How to choose your data amount

  • Email, maps, messaging: about 0.3–0.5GB per day
  • Plus SNS, photos, browsing: about 0.5–1GB per day
  • Heavy video or tethering: about 1–2GB+ per day
  • For long stays or uncertain use, consider an unlimited plan

These are rough guides; actual usage varies by app and behavior.

Setting up your eSIM for South Korea

  1. Before departure, set up the eSIM over Wi-Fi (QR or manual)

  2. On arrival in South Korea, select Bloomy eSIM for mobile data

  3. Turn on data roaming for the Bloomy eSIM line if needed

See the full setup guide

Device compatibility & SIM lock

You need an eSIM-compatible, carrier-unlocked device. Please check your device supports eSIM before buying.

If it won't connect in South Korea

Check that Bloomy eSIM is selected for mobile data, data roaming is on, and you have signal.

How to fix connection issues

FAQ: eSIM for South Korea

Will this eSIM work in South Korea?
We offer plans that cover South Korea. They work on eSIM-compatible, carrier-unlocked devices.
When should I set it up?
Install it over Wi-Fi before departure, then turn on mobile data after arriving in South Korea.
Can I use a phone number or SMS?
Plans are data-only. Voice/SMS may not be supported, but internet apps like LINE and WhatsApp work fine.
What happens if I run out of data?
Depending on the plan, data stops or slows. You can buy a top-up or another plan if needed.

Related pages

Compare eSIM plansSetup guideTroubleshootingFAQ

Heading to South Korea?

Compare data, days and coverage to find the plan that fits you.

Compare South Korea plans