📶 SIM Cards & Wi-Fi

Start with what your unlocked phone supports. Compare an eSIM or physical SIM for your phone, or pocket Wi-Fi for shared data; check calls and texts separately.

An eSIM is a digital SIM built into your phone. Install it with the QR code, then switch your data to that line when you arrive in Korea. When the days start counting depends on the seller, so read the terms first. Don't delete an installed eSIM — you may not be able to get it again.

You can buy a physical SIM at an airport or selected shops, or order an eSIM online for a compatible phone. Check whether the product supplies only data or also the Korean voice/SMS service you need.

Tourist SIM paperwork depends on the product: data-only delivery and Korean voice-number activation can require different checks. Buy in the traveller’s own identity and follow the actual seller’s passport/entry-verification instructions.

Yes, some tourist products explicitly allow hotspot sharing, but “unlimited data” does not automatically mean unlimited tethering. Choose the exact plan by its sharing allowance.

Use the rental seller’s booking and cancellation flow and save the completion email. Cancellation deadlines differ by seller: for example, GLOBAL WiFi states cancellation is free until 23:59 four days before departure.

Free public Wi-Fi is available in public places such as airports, subway and train stations, some bus stops and buses. Choose “Public WiFi Free” in your Wi-Fi list, then tap the button to use it on the connection page.

Usually, no. Data or roaming may be enough for maps and messages; check calls, texts and app verification before buying a plan.

For NAVER reservation or ordering, use your original, unexpired foreign passport and complete both the passport-camera and face checks. Your passport name and birth date must match your NAVER account, and the passport must not already be verified on another NAVER ID.

Start with a map, a translation tool and access to travel help; add booking apps only when you need them. Test accounts and payment before relying on an app during the trip.

Save your destination’s Korean name and address, and use short written translations when speaking is difficult. KTO’s 1330 service can help with travel information and interpretation.

Prepare a few short phrases and a translation tool such as Papago. For important requests, show the translated text and ask the other person to confirm the meaning.