| Data Usage Specifications | Unlimited data, 500MB, 1GB, 2GB, 3GB, 4GB, 5GB |
| Transmission Specifications | 5G/4G |
| Signal Coverage Area | Japan |
| Mobile Carrier | SoftBank |
| Supported Sizes | eSIM |
| Hotspot Sharing | Available |
| Supported Frequencies(4G) | B1(2100 MHz) |
| Excludes | Voice calls, Texts |
| Not Supported | SIM-locked device, Carrier-customized device, Mobile hotspot |
| Network Type | Local |
Please ensure your phone supports eSIM before purchasing. This product is non-refundable after sending the eSIM QR Code.
Only iOS 12.1 is supported. eSIM is not supported on iPhones purchased in Mainland China, Hong Kong, or Macau.
Your mobile phone does not have QR Code recognition function. Please print the voucher or install QR Code in advance.
You can use the eSIM immediately after installation. Installation requires a Wi-Fi or wireless network connection. Install before your departure or use free airport Wi-Fi.
The eSIM can be used immediately after installation. After checking the expiration date, register the eSIM on the expiration date.
Instruction manual: iOS [English] https://asset.usimsa.com/kkday/manual/ios-esim-us.pdf
Instruction manual: Android [English] https://asset.usimsa.com/kkday/manual/android-esim-us.pdf
Calculation of days: calendar days (If a user purchases a 3-day eSIM and installs it at 10:00 AM on September 1st, the eSIM will expire at 11:59 PM local time on September 3rd.)
After the installation process is complete (after QRCode scanning), the eSIM cannot be transferred to another phone
Softbank Japan eSIMs offer robust connectivity, particularly strong in urban centers and major tourist areas across Japan. While other local carriers like DOCOMO and au also provide extensive coverage, Softbank is often praised for its competitive speeds and reliable performance, making it a solid choice for general travel needs, navigation, and staying connected on the go.
Using an eSIM for data in Japan offers several conveniences. It eliminates the need for physical SIM cards and their installation hassles, such as finding a SIM tray pin. Setup is typically quick and digital via a QR code, allowing travelers to activate their data plan easily before or upon arrival. This provides immediate connectivity, making navigation and communication seamless throughout your trip.
Both Softbank and DOCOMO are leading carriers in Japan, offering reliable 4G and 5G networks. Softbank generally provides excellent performance in major cities and popular tourist destinations. DOCOMO is often noted for its slightly broader coverage in more remote or rural areas. For most travelers sticking to urban and well-traveled routes, both offer high-quality data services, but Softbank is a strong contender for speed and urban connectivity.
Softbank provides extensive and reliable network coverage throughout Japan, especially in densely populated areas like Tokyo, Osaka, and Kyoto, as well as along major travel corridors and popular tourist sites. Users can expect consistent 4G/5G speeds suitable for streaming, video calls, mapping, and general browsing. While coverage in very remote mountainous regions might vary, it is generally very robust for typical tourist itineraries.
A Japan Softbank eSIM offering 'unlimited data' typically means you have a high-speed daily allowance (e.g., 1GB, 2GB, or 3GB). Once this daily allowance is used up, your data speed will be reduced for the remainder of that day (often to 128kbps or 256kbps), but you can continue to use data. High speeds reset daily, ensuring consistent performance for essential online activities each new day of your trip.
Yes, Japan eSIMs are readily available for tourists and are compatible with most modern, unlocked smartphones and devices. This includes iPhone models XR and newer, Google Pixel 3 and newer, and Samsung Galaxy S20 series and newer, as well as many other Android flagship phones. Ensure your device is unlocked by your home carrier and supports eSIM functionality before your trip.
Local Softbank Japan eSIMs provide direct access to Softbank's network infrastructure, often resulting in optimized performance and direct local network support. International eSIM providers like Airalo or Holafly typically aggregate services from various local carriers. While international providers offer flexibility across multiple countries, a local carrier eSIM can sometimes provide more consistent speeds and dedicated local network access within Japan.
Installing a Japan Softbank eSIM is straightforward. You'll typically receive a QR code after purchase, which you scan with your device's camera to initiate the setup. For iOS users with the latest app and iOS 17.4 or above, one-click installation simplifies the process even further. Your device must be an unlocked, eSIM-compatible smartphone (e.g., iPhone XR/XS or newer, Google Pixel 3 or newer) to successfully install and activate the eSIM.