BEFORE YOU FLY
Plan how you’ll get online in Japan
Before comparing prices, check what your phone supports and what you need your connection to do. A plan that works well for one traveller may not suit a group or a different device.
Questions to ask before buying
| Check | Ask the provider |
|---|---|
| Device compatibility | Does my exact device model support this service, and must it be unlocked? |
| Activation | When does validity start, and can I set it up before departure? |
| Plan features | Are calls, texts and tethering included, or is it data-only? |
| Allowance | What happens after the advertised allowance is used? |
| Support | How do I get help if activation fails? |
Compare your practical options
Ask your current mobile provider for a roaming quote. Compare that with a compatible travel SIM or eSIM. If considering a portable Wi-Fi rental, check collection, return, charging and what happens when your group splits up.
Avoid assuming a data plan includes a Japanese telephone number. Check the specific product description if voice calls matter to you.
Keep a small offline backup
Save the hotel address, booking confirmations and your first route before departure. Keep activation instructions somewhere you can access without relying on the connection you are trying to set up.
Planning resource
JNTO’s official Japan travel planning hub includes connectivity guidance. Product compatibility and terms must be checked with the provider. No service has been personally tested or ranked on this page.