With eSIM, you no longer need to worry about physically swapping SIM cards or missing calls on your main line.In addition, unlike Wi-Fi routers, there is no need to rent, pick up, or return a device, and you don’t have to carry a second one.When traveling or on business trips, you can skip long lines at the airport and instantly enjoy a reliable, low-cost connection, greatly improving convenience.
eSIM features
It eliminates the need for a physical SIM card by allowing you to use the electronic SIM card built into devices such as smartphones and tablets. You no longer need to swap SIM cards, and since you can use plans from multiple carriers at the same time, it’s especially convenient for using local plans while traveling.
Replacing the SIM card I don't need it
Online in the shortest time Can be opened on the same day
Multiple lines, Switch between them with one device
Communication methods when traveling abroad Easy to secure
Other features
- You need to do the procedures and settings yourself
- Some models and lines are not supported
- Procedures are required when the device breaks down
About eSIM
Starting with the iPhone XS and XR, iPhones support Dual SIM—giving you the freedom to use multiple SIM cards. One slot is now digital, powered by eSIM, so there’s no need for a physical SIM. And it’s not just iPhones—many Android devices, tablets, and even laptops are now eSIM-ready.
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SIM card
Physical card
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eSIM
eSIM built into the smartphone
[Comparison of eSIM usage]
| Wi-Fi router rental | Use with an overseas SIM card | eSIMで利用 | |
|---|---|---|---|
| Receipt | Requires pickup at the airport counter or delivery to your home | Requires pickup at the airport counter, delivery to your home, or purchase at a local shop | Not required |
| Carry-around | You need to carry the router | Requires pickup at the airport counter, delivery to your home, or purchase at a local shop | Only your smartphone is needed |
| Return/exchange | Requires return at the airport counter or by mail | You need to replace your domestic SIM card with an overseas SIM card (and keep your domestic SIM safe so it’s not lost) | Not required |
List of eSIM compatible devices
日本旅行におすすめのeSIMプラン
日本旅行・出張・一時帰国では、利用目的に合わせて 電話番号付きeSIMと 日本eSIM（Japan eSIM）を選ぶことが大切です。
SMS認証や音声通話をご利用になる場合は電話番号付きeSIMがおすすめです。 一方、地図アプリやSNS、動画視聴などインターネット通信が中心であれば、 日本eSIMならSIMカードの差し替え不要で、QRコードを読み込むだけで簡単に設定でき、 日本到着後すぐに通信を開始できます。
初めてeSIMをご利用になる方は、 日本eSIM完全ガイド もぜひご覧ください。 eSIMの選び方、料金、設定方法、対応端末、トラブル対処法まで詳しく解説しています。
| 利用目的 | おすすめプラン |
|---|---|
| SMS認証・音声通話 | 電話番号付きeSIM |
| 日本旅行・観光 | 日本eSIM |
| 短期旅行・一時帰国 | 日本eSIM |
| 仕事・出張 | 電話番号付きeSIM |
