Is an EastESIM data plan necessary for booking train tickets in Japan or Korea?

Yes, having an EastESIM data plan is incredibly helpful for navigating train travel in countries like Japan and South Korea. Digital platforms are the norm for booking bullet train (Shinkansen) tickets in Japan via apps like SmartEX, or reserving KTX seats in Korea through the Korail Talk app. Instant data allows you to check real-time schedules, purchase tickets on the go, and receive important updates, ensuring you never miss a connection while exploring cities like Tokyo, Kyoto, or Seoul. EastESIM's robust network ensures you're always connected to these essential services.