Guide eSIM Corée du Sud 2026 : SKT vs KT vs LG U+ et carte T-Money Guide complet eSIM Corée du Sud : vitesse 5G des opérateurs SKT, KT et LG U+, règles d'enregistrement KYC avec passeport, intégration T-Money et conseils data. ⚡ Quick Answer (TL;DR Summary) Guide complet eSIM Corée du Sud : vitesse 5G des opérateurs SKT, KT et LG U+, règles d'enregistrement KYC avec passeport, intégration T-Money et conseils data. Guide étape par étape et configuration Scan the eSIM QR code on a stable Wi-Fi connection, or manually enter the SM-DP+ Address and Activation Code.Label your primary SIM and travel eSIM clearly to prevent accidental roaming data charges.Upon arrival at your destination, turn on Data Roaming on the travel eSIM and verify APN settings.If encountering no service or 3G only, toggle Airplane Mode or manually select an authorized roaming carrier network. Conseils clés et optimisation Never delete the eSIM profile during travel; once deleted, the QR code cannot be scanned again.Disable "Allow Cellular Data Switching" to guarantee your primary carrier cannot incur roaming charges. 3. Arrival Activation at Incheon Airport & APN Setup Scan the QR code in your confirmation email while on stable Wi-Fi before departure.Upon landing at Incheon (ICN) or Gimpo (GMP) airport, turn on the eSIM line and enable Data Roaming.Confirm the network registers with SKT or KT automatically. If offline, manually verify APN (e.g., ltemobile.apn or internet.sktelecom.com).For public transit, use Apple Pay transit integrations or purchase a physical T-Money card at convenience stores. 4. Essential Travel Tips: Navigation & KYC Rules Mapping Note: Due to South Korean security laws, Google Maps offers limited walking navigation. We strongly recommend downloading Naver Map (multi-language support) or KakaoMap prior to departure.KYC Policy: Local outbound calling/SMS packages require statutory passport upload; data-only packages are completely passport-free. Frequently Asked Questions (FAQ) Q: Can the same eSIM QR code be scanned and installed on multiple devices? A: No. Most travel eSIM profiles are single-use credentials. Once bound or deleted, they cannot be re-downloaded to another device. Q: How to use travel eSIM on devices without native eSIM support? A: You can use removable smart physical SIM adapters (such as ESTK, 5ber, or X-eSIM) to write and manage global eSIM profiles via their companion app. Q: What should I do if my phone shows No Service on arrival? A: Go to Settings > Cellular > Network Selection, turn off Automatic, and manually pick SKT or KT. Toggle Airplane Mode for 5 seconds to reconnect. Q: Does Chinese dual-SIM iPhone support Korea eSIM? A: Mainland China iPhones lack hardware eSIM support. Use an adapter (5ber/eSTK) or a compatible hotspot device. Related Guides & Keep-Alive Strategies 📖 eSIM multi-pays Asie : Japon, Corée, Hong Kong, Macao et Asie du Sud-Est 📖 Guide eSIM Singapour : Voyage d'affaires court vs Long séjour 📖 Guide étape par étape pour l'installation et l'activation sécurisées de l'eSIM 📖 Pas de signal ni d'Internet ? Guide de dépannage en 3 étapes