テクノロジー｜JAPANローミングの対応機種とは？ / Technology | What devices are compatible with JAPAN roaming?

Summary

Starting April 1, the “JAPAN Roaming” service will be available, allowing users to access communication networks from other carriers during large-scale disasters.

The service is divided into two modes: the full roaming mode, which supports a wide range of devices, and the emergency call-only mode, which is limited to specific models. Devices released after spring 2026 are expected to be compatible, but many older models will also work with the full roaming mode. It’s important to consider which devices to choose as communication options during emergencies.

Dialogue

This dialogue is fictional and based on the article.

Log: Hey Chako, have you heard about the upcoming JAPAN roaming? You can use other carriers’ networks during disasters.
Chako: Wow! That’s amazing! So, which smartphones are compatible?
Log: There are two types: full roaming and emergency calls only. Full roaming works with many models, but the emergency calls only option is limited to a few devices.
Navi: Just to add, for iPhones, models from the iPhone 6 and later support full roaming, while the emergency calls only feature requires either the iPhone 16e or iPhone 17.
Chako: Got it! So I need to keep that in mind when choosing a new smartphone!

Admin’s Note

I believe that the introduction of roaming in Japan is a very important step in ensuring communication methods during disasters. It’s particularly reassuring that there are many compatible devices that support full roaming. The fact that many older models are also supported is great news for consumers. I hope that in the future, as smartphone options increase, we will see an environment where more people can communicate with confidence.