Travel guide
Internet and mobile data in Japan
Choose between roaming, Wi-Fi, and eSIM based on your route and how much you rely on maps and translation.
Editorial owner: Landul editorial teamLast reviewed: 2026-07-15
Short answer
Install an eSIM over stable Wi-Fi before departure if you want mobile data when you land. Keep your Norwegian SIM for services you need from home, and check which line uses data.
Checklist
- Install before departure rather than making it your first airport task
- Select the eSIM as the data line when needed
- Use Wi-Fi for large downloads and video when practical
Common question
When should I activate an eSIM in Japan?
Follow the instructions for the specific plan. Install at home and enable the data line when you are ready to use it.