15 GB
Data
30 days
Validity
$9.99
$0.67/GB
Three eSIM South Korea 2026: Promo Code, Data Plans & Prices
Three eSIM South Korea 2026: promo code, plans and prices. How much does it cost? Rates by days and GB, from the cheapest to the largest data package.
Traveling to more than one country? Add it to the search.
Updated Nov 9, 2026
Three plans and prices for South Korea
Three for South Korea FAQ.
Is there a Three promo code for South Korea?
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Yes. Use our code when you buy a South Korea plan on MobiMatter. Enter it at checkout.
How much does the cheapest Three eSIM for South Korea cost?
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The cheapest Three eSIM for South Korea costs $9.99 and gives you 15 GB for 30 days. We recheck prices daily, so this price is up to date. You can buy it on MobiMatter, the eSIM marketplace that sells Three plans.
Does Three work in South Korea?
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Yes, Three works in South Korea on its South Korea-only plans and on its regional and global eSIMs. If your eSIM is installed but won't connect after you land, open your phone's settings and turn on data roaming for it. Your home SIM can stay as it is.
How much is a Three eSIM for South Korea for 7, 15 or 30 days?
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For South Korea alone, a 30-day Three plan starts at $9.99 for 15 GB. Three has no 7- or 15-day plan for South Korea.
Does Three have an unlimited data eSIM for South Korea?
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No, Three has no unlimited plans for South Korea, so every plan comes with a set amount of data. Its plans run at full speed with no daily limit.
What is Three, and is it good for South Korea?
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Three eSIMs are sold through MobiMatter, an eSIM marketplace, with plans covering 99 destinations.
How much does 1 GB of data cost with a Three eSIM in South Korea?
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With Three, 1 GB in South Korea can cost as little as $0.50, on the plan with 30 GB for 30 days.
Does Three have 5G in South Korea?
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Yes, 7 of Three's 13 plans for South Korea have 5G, so check the plan details before you buy. Your phone needs to support 5G too: on iPhone, that means an iPhone 12 or newer.
Can I use a Three eSIM as a mobile hotspot in South Korea?
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Yes, every plan from 3 lets you share data through a personal hotspot.
Does Three have a phone plan with a number for South Korea?
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No, the South Korea plans from 3 are data only, so your home number stays on your main SIM. You can still call and message people through WhatsApp or other apps.
Can I buy a Three eSIM before my trip to South Korea and use it later?
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Yes, you can buy it ahead, but install it within 2 months of purchase. The days start counting as soon as you install the eSIM, so install it shortly before your trip.
Can I top up a Three eSIM?
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Yes, you can top up a 3 eSIM in the MobiMatter app or on the MobiMatter site, with no new QR code. A top-up is a new package with its own days, and it doesn't extend the old one.
Does Three have a global eSIM that works in South Korea?
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Yes, Three has 9 regional plans that cover South Korea and other countries, plus 2 global plans starting at $41.99. These keep you online as you cross borders.
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