Best eSIM for South Korea (2026): prices, networks and the apps you’ll need

Why South Korea is different

What makes Korea different is the apps. Google Maps in Korea offers place listings, reviews and public transit directions, but not turn-by-turn walking or driving navigation, the Korea Herald reported in August 2026. The government approved exporting 1:5,000-scale map data to Google on 27 February 2026, under security conditions. Google says it plans to bring "full-functioning Google Maps capabilities" to Korea, including turn-by-turn directions, but it hasn’t given a launch date.

Most people in Korea use local apps instead. Naver Map had 29.25 million monthly active users in April 2026, compared with 12.77 million for KakaoMap and 9.08 million for Google Maps, according to Mobile Index figures cited by the Korea Herald. Both local apps need mobile data, and so do the messaging, taxi and payment apps you’ll lean on day to day. That makes a working data plan from the moment you land more useful than in most countries.

Quick picks

Step 1: Size your plan for South Korea

Maps, messaging and taxi apps are light on data, but you’ll use them constantly. As a rough guide, maps and messaging use hundreds of megabytes a day, while video and video calls can use several gigabytes. These are general estimates, not measurements.

Step 2: Compare published prices

Unlimited plans by trip length

Lowest listed price in the row — means no plan of that length was listed. Holafly ($5.90) and Yesim ($4.20) also sell a single day. Saily sells unlimited plans too; its site wouldn’t let us read the price for each length, so it isn’t in the table. Maya sells one global unlimited plan at the same price for every country: $9.99 for 3 days, $19.99 for 7, $27.99 for 14 and $49.99 for 30 (see Maya). Official pages, checked 4 November 2026.

Fixed-data plans

Lowest listed price in the row Validity differs, so compare the small print as well as the price. Nomad’s 10 GB plan was on sale; the regular price is $20. Airalo also lists shorter versions (for example 10 GB for 7 days at $18.00). Ubigi also lists 10 GB for 7 days ($12), 25 GB for 30 days ($25) and an annual 60 GB plan (5 GB a month) for $49. Yesim also lists 30 GB for $35.04. Official pages, checked 4 November 2026.

Step 3: Check the fine print

• Networks. Korea has three mobile operators: SK Telecom, KT and LG U+. Nomad lists all three. Ubigi names LG U+ and SK Telecom, and Airalo lists SK. Holafly, Saily and Yesim didn’t name a network on the pages we read.
• Unlimited isn’t always unlimited. Ubigi’s 7-day unlimited plan gives 25 GB at full speed, then 2 Mbps. Holafly limits hotspot sharing to 1 GB a day. Yesim says speeds may be limited under the operator’s fair-usage policy. Airalo’s and Nomad’s Korea pages didn’t state a limit, so check the plan details before you buy.
• Activation windows. Nomad starts a plan automatically 60 days after purchase if you haven’t used it. Yesim gives 90 days and Saily 180 days.
• No Korean number. These plans are data-only. Saily sells an optional US phone number, and Yesim offers a 20-minute calling add-on for $4.79. Register messaging apps with your home number before you travel.

The seven providers

Maps and apps to set up before you go

• Naver Map or KakaoMap. These are the maps most people in Korea use. Download one at home, try it out, and save your hotel.
• Google Maps. Still useful for place listings, reviews and public transit routes. As of our check date it didn’t offer turn-by-turn walking or driving navigation in Korea (see above).
• Messaging and SMS codes. Your travel eSIM won’t receive SMS codes. Keep your home line on for texts (your carrier’s roaming charges may apply) and use the eSIM for data.

Transport cards: T-money, WOWPASS and the Climate Card

Korean transit runs on prepaid cards. According to VisitKorea, the official tourism site (page updated August 2026):

• T-money is sold at convenience stores nationwide (GS25, CU, 7-Eleven and others) and at Seoul subway information centres on Lines 1 to 8, for ₩3,000–5,000. It works on public transport nationwide, including taxis, and can be reloaded at subway ticket machines, up to ₩500,000.
• Mpass is a foreigner-only T-money card with up to 20 rides a day on Seoul subways, city buses and AREX (not express trains): ₩15,000 for 1 day, ₩23,000 for 2, ₩30,500 for 3, ₩47,500 for 5 and ₩64,500 for 7. It’s sold for Korean won cash only.
• WOWPASS is a foreigner-only prepaid card (₩5,000) that combines transport, payments and currency exchange. You need your passport to buy it, and its kiosks accept US dollars, yen, yuan and other currencies.
• Climate Card short-term passes give unlimited rides on Seoul buses and subways for 1 to 7 days (₩5,000–20,000, plus ₩3,000 for the card). From 1 October 2026 it’s limited to Seoul, and it can only be bought or charged with cash or a Korean-issued card.

Will your phone work?

• eSIM-capable and unlocked. Apple lists iPhone XS, XS Max, XR or later. Settings → General → About should say "No SIM restrictions" next to Carrier Lock (full checklist).
• Bought in mainland China? Apple says that in China mainland only the iPhone 18 Pro, 18 Pro Max, iPhone Duo, iPhone 17e and iPhone Air support eSIM. Many older mainland models use two physical SIM cards instead, so check for Add eSIM in your settings before you buy a plan.
• Bought in Hong Kong or Macau? Apple notes that certain iPhone models sold there have two nano-SIM slots. Check for Add eSIM in your settings first.
• Install before you fly. Install the eSIM at home on Wi-Fi and leave the line switched off until you land (install guide).

Entry rules: K-ETA and visa-free groups

Many visitors who don’t need a visa for Korea must normally get a K-ETA (Korea Electronic Travel Authorization) before they fly. Korea has extended a temporary K-ETA exemption to 31 December 2026 (Korea time) for 22 countries and regions: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Italy, Japan, Macao, the Netherlands, New Zealand, Norway, Poland, Singapore, Spain, Sweden, Taiwan, the UK, and the US (including Guam). Travellers covered by the exemption can still apply for a K-ETA, for a fee, if they want to skip the arrival card. Everyone else should check the official K-ETA website or a Korean embassy.

Chinese travellers: Korea has extended visa-free entry for Chinese group tourists from 1 July to 31 December 2026, according to the Korean Consulate General in Qingdao. VisitKorea says the $15 group visa fee waiver for Chinese tourists also runs to 31 December 2026. Individual travellers should check the visa rules with a Korean consulate.

Our take

Affiliate links. Prices are set by the provider and confirmed at checkout.

Before you fly

1. 1

   Check your phone

   Make sure it’s unlocked and eSIM-capable (how to check).

2. 2

   Buy and install at home

   Install on Wi-Fi before departure and keep the line off until you land. With Nomad, don’t buy more than 60 days ahead.

3. 3

   Set up your apps

   Download Naver Map or KakaoMap, save your hotel, and register messaging apps with your home number while you can still receive SMS.

4. 4

   Switch on when you land

   Turn on the travel line, enable data roaming for that line, and set it as your mobile-data line. Pick up a transport card at the airport or a convenience store.

5. 5

   Check entry rules

   Check K-ETA and visa rules on official government sources. Visa services such as iVisa exist, but the official government site is always the authority.

   iVisa (affiliate link, opens in a new tab)