Best Apps for Traveling in Korea: Maps, Taxis & Translation
TL;DR: Naver Map is a useful first choice for local directions and transit, Kakao T can help with taxi hailing,
Connectivity & Apps
Korea SIM Card vs eSIM: Which One Should Tourists Get?
TL;DR: If your phone supports eSIM, get one — plans start around $1.15–6 for a few days and you can