Question 1

What is the best eSIM for South Korea in 2025?

Accepted Answer

CloudOn offers a variety of prepaid eSIM data plans for South Korea with different data amounts and validity periods — from lightweight daily plans to generous monthly packages. Our plans connect to SK Telecom, KT, and LG U+ for the best coverage. All plans include instant QR delivery, high-speed 4G/LTE data, and zero roaming fees. Browse the South Korea eSIM plans above to compare options and find the best fit for your trip.

Question 2

How much does a South Korea eSIM cost?

Accepted Answer

The cost of an eSIM for South Korea depends on the data amount and validity period you choose. CloudOn offers competitive prepaid plans at local data rates — significantly cheaper than international roaming from your home carrier. Short-trip plans start at very affordable prices, while longer validity plans offer better per-day value. Compare all South Korea eSIM prices in the plans section above.

Question 3

Is an eSIM better than buying a local SIM card in South Korea?

Accepted Answer

For most travelers, yes. An eSIM for South Korea offers several advantages over a physical SIM card: you can buy and install it before you travel (no airport queues), you keep your home number active via dual SIM, there's no risk of losing a tiny SIM card, and you don't need to find a local carrier store. An eSIM is also better for the environment since it eliminates plastic waste.

Question 4

Do I need to unlock my phone to use an eSIM in South Korea?

Accepted Answer

Yes, your device must be both eSIM-compatible and carrier-unlocked to use a CloudOn eSIM in South Korea. Most modern smartphones support eSIM, including iPhone XS and newer, Google Pixel 3 and newer, Samsung Galaxy S20 and newer, and many more. You can verify your device on our compatibility page or check Settings > General > About on iPhone.

Question 5

Can I use hotspot or tethering with my South Korea eSIM?

Accepted Answer

Many CloudOn South Korea eSIM plans support personal hotspot and tethering, allowing you to share your mobile data with laptops, tablets, or other devices. This is especially useful for working remotely or traveling with others. Check the specific plan details for hotspot availability before purchasing.

Question 6

When should I install my South Korea eSIM?

Accepted Answer

We recommend installing your eSIM before traveling to South Korea — ideally at home while connected to Wi-Fi. Your data validity only begins when you first connect to a local network in South Korea, not when you install the profile. This means you can install days or even weeks in advance and still get your full validity period when you arrive.

Question 7

Can I buy more data if I run out during my South Korea trip?

Accepted Answer

Absolutely! If you need more data during your stay in South Korea, you can purchase a new CloudOn eSIM plan at any time through our website or app. The new plan activates instantly with a fresh QR code. Many travelers also choose our unlimited data plans for South Korea to avoid worrying about data limits altogether.

Question 8

Can I keep my regular SIM while using a South Korea eSIM?

Accepted Answer

Yes! Most eSIM-compatible devices support dual SIM functionality, meaning you can keep your regular home SIM active for calls and texts while using the CloudOn eSIM for mobile data in South Korea. This is one of the biggest advantages of eSIM over traditional physical SIM cards — you stay reachable on your normal number without paying roaming fees for data.

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