An eSpeedz South Korea eSIM starts at $7.99 for prepaid, data-only service across the country, with plans from 3GB to 50GB. It arrives by email as a QR code, installs before your flight, and starts when your phone connects in Korea.
Korea has some of the fastest mobile internet anywhere, but you need the right apps and a working connection to use it. Sort the data before you board.
The first surprise for most visitors is that Google Maps only does part of the job in Korea. It handles public transit, but walking and driving directions still aren't there. The government cleared the way for Google in early 2026 and Google says full navigation is coming, but there's no launch date yet. Until then, locals and visitors alike use Naver Map or KakaoMap, both of which have English menus and live bus and subway info.
A local SIM is possible but slower than it sounds. Korean law requires foreigners to register a SIM with a passport, so you queue at an airport counter or carrier shop and hand over ID before you get connected. Roaming avoids that, but daily passes from US carriers cost around $12 a day. A data eSIM skips both the counter and the daily fees.
Wifi is everywhere in Seoul, on subway platforms, in cafes and in most hotels, so you won't be stuck if your data runs out. The catch is moving between places. Naver Map, Kakao T for taxis and Papago for translating menus all work best on a steady mobile connection, and that's the part a lot of first-timers underestimate.
Plans connect to leading local 4G/5G networks in South Korea. Data-only, prepaid, no contract. Prices in USD.
| Plan | Data | Validity | Price (USD) |
|---|---|---|---|
| South Korea 3GB | 3GB | 30 days | $7.99 |
| South Korea 5GB | 5GB | 30 days | $8.99 |
| South Korea 10GB | 10GB | 30 days | $15.99 |
| South Korea 20GB | 20GB | 30 days | $26.99 |
| South Korea 50GB | 50GB | 30 days | $56.99 |
| Japan + South Korea 3GB | 3GB | 30 days | $12.99 |
| Japan + South Korea 5GB | 5GB | 30 days | $21.99 |
| Japan + South Korea 10GB | 10GB | 30 days | $42.99 |
Prices checked October 1, 2026. All prices in USD, one-time payment.
| Network | Leading local 4G/5G networks in South Korea |
|---|---|
| Phone number | Not included. Data only, your regular number keeps working for calls and texts |
| Validity starts | When the eSIM first connects in South Korea, not when you buy or install it |
| Delivery | QR code by email, usually in about 3 minutes |
| Top-ups | Available |
| Phone needed | eSIM-compatible and carrier-unlocked |
| Multi-country option | Japan + South Korea |
Plans connect to leading local 4G/5G networks in South Korea. Popular stops for travelers:
Because wifi is so common in Seoul, many travelers get by on 3GB to 5GB for a week, using data mainly for Naver Map, taxis and translation. Two weeks, or a trip that takes you to Busan, Jeju or the countryside, is more comfortable with 10GB. Heavy video posting or hotspotting a laptop can push you toward 20GB.
Spring and autumn are the easy picks. Cherry blossoms usually arrive in early April, and October into early November brings crisp air and fall colors in the mountains and palace gardens. The summer monsoon soaks late June and July, August is hot and sticky, and winters are properly cold, though great for skiing and street food.
Sources: newyork.mofa.go.kr · korea.net · ey.com · techcrunch.com · 9to5google.com · kimchimobile.com · verizon.com. Information checked October 2026. Entry rules and fees change, so confirm with official sources before you travel.