Travel guide
Roaming, your Norwegian number, and SMS in Japan
How to plan for your Norwegian SIM, BankID, and travel data without mixing up data lines.
Editorial owner: Landul editorial teamLast reviewed: 2026-07-15
Short answer
A travel eSIM can be used as the data line while you keep your Norwegian SIM for services you need. Check roaming rules with your Norwegian operator and follow the BankID app requirements.
Checklist
- Explicitly choose which line uses mobile data
- Check your Norwegian operator's prices and settings before departure
- Do not assume one plan will last the whole trip if usage increases
Common question
Can I keep my Norwegian number in Japan?
You can usually keep your Norwegian SIM available for services you need, but settings and costs depend on your operator.