Use 1330 when the problem is travel information, interpretation or tourism assistance rather than an immediate police or medical emergency. Korea Tourism Organization operates the service and currently offers phone, online call and chat routes.
Inside Korea, dial 1330. From abroad, current KTO materials list +82-2-1330. The official VisitKorea page also provides a free online-call option; calls themselves are free on Wi-Fi, while mobile-data charges can still apply. A web chat is available without requiring a separate download, and KTO materials also advertise multilingual text-chat support.
Good uses include asking how to reach a destination, clarifying a tourism service, getting language help during a non-emergency interaction, or finding the correct organization to contact next.
Do not use 1330 instead of emergency numbers when someone is in danger. Police is 112 and fire/medical emergency response is 119. For immigration-specific questions, use the immigration service rather than treating 1330 as the authority on entry status.
Channel availability and supported languages can change, so open the current VisitKorea 1330 page before relying on a specific chat or messenger route.