Which carrier should I choose?
Need a Korean phone number (for restaurant bookings, delivery apps, SMS verification)? Choose KT or SK telecom. Only using LINE/KakaoTalk? LG U+, Airalo or Holafly (data-only) are enough.
Compare price, data, duration, network and voice-call support at a glance. Quickly find the plan that fits your trip to Korea.
Prices updated July 28, 2026
Sample prices for comparison. Confirm final pricing on each official site.
As of July 28, 2026, the cheapest Korea eSIM overall is ttshop · Unlimited · 1-day at $4.28, and the cheapest unlimited plan is ttshop · Unlimited · 1-day at $4.28. Auto-compiled daily from live prices across the 9 sellers and 99 plans listed on this site. Confirm final pricing on each official site.
| Use case | Plan | Price |
|---|---|---|
| Cheapest overall | ttshop · Unlimited · 1-day | $4.28 |
| Cheapest unlimited | ttshop · Unlimited · 1-day | $4.28 |
| Cheapest for 3 days | ttshop · Unlimited · 3-day | $8.86 |
| Cheapest for 5 days | ttshop · Unlimited · 5-day | $12.53 |
| Cheapest for 7 days | ttshop · Unlimited · 7-day | $15.89 |
| Cheapest for 10 days | ttshop · Unlimited · 10-day | $18.34 |
| Cheapest for 15 days | ttshop · Unlimited · 15-day | $24.14 |
| Cheapest for 30 days | Nomad · 10GB · 30-day | $17.52 |
Need a Korean phone number (for restaurant bookings, delivery apps, SMS verification)? Choose KT or SK telecom. Only using LINE/KakaoTalk? LG U+, Airalo or Holafly (data-only) are enough.
Most eSIMs are installed by scanning a QR code. Set it up over Wi-Fi before you travel. Airalo and Holafly offer easy app-based management and English support.
KT and SK telecom issue a Korean 010 number, so you can receive calls and SMS — useful for app verification and bookings. LG U+, Airalo and Holafly are data-only.
Some plans throttle after a daily cap. For example, KT caps speed to 5Mbps after 3GB/day (resets at midnight KST). SK telecom advertises no speed limit. Check each carrier's fair-use policy.
Quick rundowns on entry, apps and getting around.
The registrations you need before you fly, and how to breeze through arrival.
An app checklist so you never get stuck getting around or ordering.
How to pick the right data plan for smooth maps and social posts.
Match the network quality and data you need to where you are headed.
Areas where you lean on maps and payment apps. A stable network pays off.
Sharing photos and using translation? Aim for at least 1GB a day.
On days full of e-tickets and video uploads, unlimited is peace of mind.