South Korea eSIM plans and prices
Fixed data
| Total data | Valid for | Price (USD) |
|---|---|---|
| 1 GB | 7 days | $3.99 |
| 3 GB | 30 days | $6.99 |
| 5 GB | 30 days | $8.99 |
| 10 GB | 30 days | $15.99 |
| 20 GB | 30 days | $27.99 |
Your plan ends when you use all your data or it expires.
Unlimited
| Valid for | Price (USD) |
|---|---|
| 5 days | $13.99 |
| 7 days | $19.99 |
| 10 days | $29.99 |
| 15 days | $39.99 |
| 20 days | $49.99 |
| 25 days | $59.99 |
| 30 days | $67.99 |
How Unlimited data works
You get 3 GB of high-speed data per day. After that, speeds slow to 3 Mbps until your allowance resets, every 24 hours from when your plan started.
How to buy your South Korea eSIM in the chat
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Open the chat
Tap Buy on WhatsApp, or Buy on Telegram and then Start. You can also find @atliesim on WhatsApp or @AtliEsimBot on Telegram.
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Say where you're going
The buttons open the chat on South Korea. On WhatsApp, send the message that's already typed. Atli replies with the plans.
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Pick a plan and pay
Pay on a secure Stripe checkout by card, Apple Pay or Google Pay where available. Your card details never pass through the chat.
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Install from the chat
Your eSIM arrives in the same chat, with buttons to install it. Install it on Wi-Fi before you travel. Your plan starts when your phone first connects in South Korea.
Buying on WhatsApp, step by stepBuying on Telegram, step by step
Coverage and phone compatibility
Partner networks in South Korea
- KT5G and 4G/LTE
5G works where the network has 5G coverage and your phone supports it. Otherwise you'll connect on 4G/LTE. Does a travel eSIM support 5G?
What your phone needs
- eSIM support. Check your exact model. Some regional versions of the same phone don't support eSIM.
- Carrier-unlocked. A locked phone may not accept another provider's eSIM.
- Data only. No phone number, calls or SMS. Keep your own SIM on for those.
Going beyond South Korea?
Regional and global plans cover several destinations on one eSIM.
Questions about the South Korea eSIM
How do I buy an eSIM for South Korea on WhatsApp or Telegram?
Tap Buy on WhatsApp or Buy on Telegram, or message @atliesim or @AtliEsimBot. Choose a plan, pay, and install your eSIM from the same chat.
How much does an eSIM for South Korea cost?
Fixed data plans range from $3.99 (1 GB for 7 days) to $27.99 (20 GB for 30 days). Unlimited starts at $13.99 for 5 days. All prices are in USD.
Which networks does the Atli eSIM use in South Korea?
In South Korea, Atli uses KT on 5G and 4G/LTE. 5G needs 5G coverage where you are and a phone that supports it.
Is the Unlimited plan really unlimited?
Yes, for the days you buy, with no extra charges. After 3 GB of high-speed data in a day, speeds slow to 3 Mbps until the next daily reset.
When should I install the eSIM, and when does my plan start?
Install it on Wi-Fi before you travel. Your plan starts when your phone first connects to a supported network in South Korea, not when you buy or install it. If it hasn't started within 60 days of purchase, it expires.
Will my phone work with the eSIM?
It needs to support eSIM and be carrier-unlocked. Check your exact model before you pay.
Can I add more data during my trip?
Yes. Type check data in the chat and tap Buy another plan, or type South Korea and choose a plan. It goes onto the same eSIM, so there's nothing new to install.
Does the eSIM come with a phone number?
No. Atli is data only: no phone number, calls or SMS. Keep your own SIM on for calls and texts.
Will I keep my WhatsApp and Telegram number?
Yes. Your WhatsApp and Telegram accounts stay on your own number and keep working over Atli data, as they do on Wi-Fi.
Can I share my data with a hotspot?
Yes. Turn on your phone's hotspot while Atli is your mobile-data line. Hotspot data comes from your plan, and on Unlimited it counts toward the daily 3 GB of high-speed data.
