South Korea

Staying connected in South Korea

South Korea pulls in visitors throughout the year: cherry blossoms in April, maple colours in October and November, and snow at the ski resorts of Gangwon. A typical itinerary spends a few days in Seoul before taking the KTX to Busan or flying out to Jeju, and plenty of people come for skincare shopping, beauty treatments or a K-pop concert.

Almost everything in Korea runs through an app, from directions and taxis to restaurant bookings and queue tickets at busy spots. Data matters most when you are navigating Seoul's dense subway network, translating Korean signs, or driving and bussing around Jeju, where the sights are widely spread out.

Coverage and networks

There are 3 eSIM options for South Korea. Each network belongs to the option it is listed with, so compare them before choosing.

According to the plan information, the option (South Korea – TikTok) roams from a Singapore home network: your phone connects to the networks above, but some apps and websites may see your location as Singapore.

“TikTok” is part of an option’s name. If you rely on a particular app, check the conditions of that exact plan; the label alone does not guarantee access to any app.

Signal and speed depend on where you are, your device and network conditions, and can differ between plans.

Choosing a data allowance

eSIM plans for South Korea currently last 1 to 90 days and come in these types:

• Daily data (500MB, 1GB, 2GB and 3GB per day): suits a steady routine. Check when the daily allowance resets and what happens once it is used.
• Total data (1GB to 50GB): one allowance for the whole trip, handy when some days are heavier than others.
• Unlimited: always read the fair-use policy; after a set amount, speed may be reduced.

Suggestions for this trip

• A 4–5 day Seoul break built around maps, taxis and social media: 1GB of daily data is usually enough; 500MB a day suits very light users who rely on Wi-Fi.
• Filming in Myeongdong, Hongdae or at a concert and posting straight away: choose 2GB or 3GB a day, or skip the counting with an unlimited plan (fair-use policy applies).
• Around ten days across Seoul, Busan and Jeju with uneven daily use: total data of 10GB or 20GB gives more flexibility.
• Language courses, family visits or long business stays: 60-day and 90-day plans are available; heavier users can look at 30GB or 50GB total data where offered for that duration.

Count your arrival and departure days. Before paying, check the exact plan for when validity starts, how days are counted, and whether hotspot, calls or SMS are included; these differ between plans.

Before you go

• Maps: Google Maps offers very limited walking and driving directions in South Korea, so install Naver Map or KakaoMap (both have English) for subway, bus and station exit details.
• Ride-hailing: Kakao T is the most popular taxi app; Uber also operates in Seoul.
• Messaging and translation: KakaoTalk is the country's main messaging app, and Papago handles Korean translation well, including text through the camera.
• Public Wi-Fi: Found in subway stations, on many buses, in public spaces and most cafés, though the connection drops as you move around.
• Payments: International cards are widely accepted; a top-up T-money card works on trains, buses and in convenience stores.
• Local SIM: Sold at Incheon Airport and operator shops; you will need to show your passport.
• eSIM setup: Before buying, make sure your phone supports eSIM and is not carrier-locked. Install the eSIM before you fly, on a stable Wi-Fi connection, following the instructions sent with your plan.
• On arrival: Set the travel eSIM as your mobile data line and follow its roaming instructions. Turn off data roaming on your home SIM to avoid unexpected charges.