Plans and prices for South Korea
There are 6 fixed-data plans for South Korea, from $4.43. The lowest price per GB is $1.55: 20 GB for 30 days.
Prices are in US dollars. The final price is shown at checkout.
| Data | Validity | Price | Price per GB |
|---|---|---|---|
| 1 GB | 7 days | $4.43 | $4.43 |
| 2 GB | 15 days | $7.50 | $3.75 |
| 3 GB | 30 days | $9.55 | $3.18 |
| 5 GB | 30 days | $11.59 | $2.32 |
| 10 GB | 30 days | $19.78 | $1.98 |
| 20 GB | 30 days | $31.03 | $1.55 |
Unlimited data for South Korea
Unlimited plans start at $12.62. Each includes 3 GB of high-speed data per day; after that, speed is reduced to 1 Mbps.
| Validity | Price | High-speed data | After that |
|---|---|---|---|
| 3 days | $12.62 | 3 GB per day | 1 Mbps |
| 5 days | $20.80 | 3 GB per day | 1 Mbps |
| 7 days | $30.00 | 3 GB per day | 1 Mbps |
| 10 days | $36.14 | 3 GB per day | 1 Mbps |
| 15 days | $50.46 | 3 GB per day | 1 Mbps |
| 30 days | $70.92 | 3 GB per day | 1 Mbps |
Network: SK Telecom
Plans for South Korea connect to the SK Telecom network. Check the network shown on a plan before you buy.
Calls, SMS and phone numbers
Plans for South Korea are data-only: they don’t include a phone number, carrier calls or SMS. If you need a separate number for calls and texts, the DualLine second line is a different product.
Local facts for South Korea
General information about mobile networks in South Korea; not specific to DualLine plans.
South Korea's three mobile operators are SK Telecom, KT and LG U+. Government data counted about 38.6 million 5G phone subscriptions on their networks, including virtual operators, in January 2026. Source: Digital Daily (디지털데일리).
South Korea launched the world's first smartphone-based commercial 5G service on 3 April 2019. Source: Korea.kr (Government of the Republic of Korea).
Set up before you travel
Install the eSIM over Wi-Fi before you leave, then switch mobile data to it when you arrive in South Korea.
More eSIM destinations
Compare plans for other popular destinations, or start with the travel eSIM guide.
Your take-away checklist
- Pick a plan: 1–20 GB or unlimited data, valid 3–30 days.
- Check that your phone supports eSIM and is unlocked.
- Install the eSIM over Wi-Fi before you travel.
- After you arrive, choose the eSIM for mobile data.
Common questions
How much does an eSIM for South Korea cost?
Plans start at $4.43 (1 GB for 7 days). The lowest price per GB is $1.55: 20 GB for 30 days. The final price is shown at checkout.
Is there an unlimited data eSIM for South Korea?
Yes. Unlimited plans start at $12.62 for 3 days. Each includes 3 GB of high-speed data per day; after that, speed is reduced to 1 Mbps.
Which mobile network will I use in South Korea?
SK Telecom. Check the network shown on a plan before you buy.
Does the eSIM for South Korea include calls, SMS or a phone number?
No. Plans for South Korea are data-only. If you need a separate number for calls and texts, see the DualLine second line.
How long are eSIM plans for South Korea valid?
Plans are valid for 3 to 30 days. Check when validity starts: on some plans it starts at installation, on others when the eSIM first connects.
When should I install the eSIM for South Korea?
Install it over Wi-Fi before you leave, then switch it on for mobile data when you arrive.
Sources and support
Plan prices come from DualLine’s catalogue. Local facts link to the source we checked.