Step 4
Power & Connectivity (SIM)
This information is as of 2026/08/11.
Connectivity may vary by region and season.
Voltage & Plug Types
Electrical standards and outlet shapes
⚡220V / 60Hz
🔌Type C / F(Round 2-pin)
🔄Needed from Japan/US
💡Adapters available at Incheon Airport convenience stores.
Buying a SIM Card
Where to buy, costs, and activation process
📱SKT, KT, LG U+
🏪Incheon Airport arrivals (multiple counters), carrier shops
📋Passport required
💰Tourist SIM from $20-40 for 5-30 days
💡Pre-order online for airport pickup; unlimited data plans available.
eSIM & Mobile Wi-Fi
eSIM availability and portable Wi-Fi rental
📶Widely available
🏢Airalo, Holafly, Ubigi, KT eSIM, SK Telecom eSIM
💰$5-25 for 1-10GB / 7-30 days
💡KT and SK offer local eSIM plans with unlimited data options.
Wi-Fi Availability
Public Wi-Fi coverage and security
📡Excellent — one of the best-connected countries
🏨Ultra-fast and free in all hotels
☕Free in subway, buses, cafes, convenience stores, and public areas
💡Korea has free WiFi on all public transport and most public spaces.
Internet Restrictions & VPN
Blocked services and VPN recommendations
🔒None — unrestricted internet
🚫North Korean propaganda sites blocked (not relevant for tourists)
🛡️Not needed
💡South Korea has ultra-fast internet with virtually no restrictions.
Useful Local Apps
Must-have apps for transport, translation, and maps
🚗Kakao T (taxi), T-money app, Naver Map transit
🗺️Naver Map (better than Google), KakaoMap
💬KakaoTalk (essential), WhatsApp
💡Google Maps is unreliable in Korea; use Naver Map or KakaoMap instead.
International Calls
How to make international calls and alternatives
📞+82 (South Korea)
🆘112 (Police), 119 (Fire/Ambulance)
📲Dial 001 + country code + number for international calls
💡1330 is the English-speaking tourism hotline available 24/7.