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.
-
SIM card

Physical card
-
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 |