【50% OFF】Japan Unlimited Data eSIM (Rakuten / SoftBank / KDDI / Docomo)
- Book on KKday for a premium eSIM for Japan travel experience: 4G/5G speed & unlimited hotspot sharing
- Access Japan's high-speed Rakuten, KDDI, Softbank and Docomo networks
- Choose total or unlimited data plans for up to 30 days to fit your travel need
- Enjoy one-click eSIM installation directly from the KKday app
- No physical SIM card needed—never worry about losing it or dealing with SIM tray issues
- Visit KKday’s eSIM FAQ section for fast tips, setup guides, and instant answers anytime
Package Options
Product Info
The content of this product is provided by machine translation and may not reflect the actual information, please take this into consideration before booking.
eSIM compatible devices
eSIM installation instructions
SIM Card Specifications
| Data Usage Specifications | Unlimited data, 500MB, 1GB, 2GB, 3GB, 4GB, 5GB |
| Transmission Specifications | 4G |
| Signal Coverage Area | Japan |
| Mobile Carrier | Rakuten / SoftBank / KDDI / Docomo |
| Supported Sizes | eSIM |
| Hotspot Sharing | Available |
| Supported Frequencies(4G) | B1（2100 MHz）, B3（1800 MHz）, B11 (1500 MHz), B18（800 MHz）, B8（900 MHz）, B28（700 APT）, B26（850 MHz）, B41（TD 2500 MHz） |
| Excludes | Voice calls, Texts |
| Not Supported | SIM-locked device, Carrier-customized device, Mobile hotspot |
| Reminders | eSIM is valid for 3 months after the issue date. Use within the designated period after registration |
| Network Type | Roaming |
| Mobile Virtual Network Operator (MVNO) | Hutchison Telecommunications Hong Kong Holdings Limited |
Important Info
Includes/Excludes
Reminders
Please make sure your mobile phone and its operating system support eSIM. Once the eSIM QR code has been sent, this product is non-refundable.
iOS must be version 12.1 or later. iPhones sold in China and certain mobile phones sold in Hong Kong and Macao do not support eSIM
If your mobile phone does not support QR code scanning, please print out the voucher or install a QR code reader in advance
The eSIM can be used immediately after installation. A Wi-Fi or mobile data connection is required for installation, so please install it before departure or use the free Wi-Fi at the airport
The eSIM can be used immediately after installation. Please check the usage date and activate the eSIM on the designated 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 method of days: 24-hour system (e.g.: you purchases a 3-day eSIM and installs it at 10:00 am, 1st, Sep. The eSIM will be terminated at 9:59 am, 4th, Sep.)
How to Use
— How to Use —
- Get a QR code from the voucher, scan the QR code and install the eSIM
* Activate "Data Roaming" before using the eSIM
* Please refer to Apple for more information
* If the installed eSIM is deleted, it cannot be reinstalled. In this case, you must purchase another eSIM
* Please print the QR code or display the QR code on another device for scanning
— Important Info —
- If the APN isn't set up automatically, please:
1. Set up the APN manually following the instructions on the eSIM voucher
2. Reboot your smartphone and check whether it recognizes the eSIM and connected to the Internet
3. Contact your phone manufacturer and carrier, to see if the country lock has been turned off
4. Contact your local carrier to see if you are on device protection service. - Instruction manual: iOS [English] / Android [English]
- iOS one-click installation: Update to iOS 17.4 or later to install eSIM with one click in the KKday App
- eSIM FAQs
Validity Period
- Valid for use within 90day(s) from the date of issue; Invalid after expiration
Cancellation Policy
- Once the order has been completed, it cannot be canceled, modified, or refunded
- Due to time zone differences, the confirmed cancellation date is based on the supplier’s local time. Please allow 2–5 business days to process your cancellation request, after which the cancellation fee will be charged according to the product’s cancellation policy. Once the cancellation is confirmed, you will receive your refund within 14 working days.
FAQ
When selecting an unlimited data eSIM for Japan, consider factors such as network coverage (e.g., KDDI, Softbank), advertised speeds (4G/5G), whether the plan offers truly unlimited high-speed data or a high-speed allowance followed by throttling, the availability of mobile hotspot sharing, and the duration options for the plan that align with your travel itinerary.
Yes, unlimited data plans are commonly available for eSIMs in Japan. These plans typically offer continuous connectivity, often with a generous daily or total high-speed data allowance before potential speed adjustments, or truly unlimited data subject to fair usage policies. Durations vary, often ranging from a few days up to 30 days, allowing travelers to select a plan that best fits their trip length.
Activating a Japan unlimited data eSIM is straightforward. After purchase, you typically receive a QR code or manual activation details via email. Scan the QR code or enter the details in your device's settings under 'Cellular' or 'Mobile Data' to install the eSIM profile. Once installed, ensure the eSIM is enabled as your primary data line and data roaming is turned on. Your device should then connect to the local network for immediate use.
Users frequently recommend Japan unlimited data eSIMs for their seamless 4G/5G connectivity and broad coverage provided by major networks like KDDI and Softbank. The convenience of instant digital delivery, the option for unlimited mobile hotspot sharing, and the elimination of needing a physical SIM card are also highly valued for hassle-free travel.
Japan unlimited data eSIMs commonly utilize the robust networks of major local providers such as KDDI and Softbank. These networks offer extensive 4G and 5G coverage across urban areas and popular tourist destinations throughout Japan, ensuring reliable and high-speed internet access for travelers.
Yes, many unlimited data eSIM plans for Japan include the functionality for mobile hotspot sharing. This allows you to use your smartphone as a Wi-Fi hotspot, enabling other devices like tablets or laptops to connect to the internet using your eSIM's data. Check specific plan details for any limitations on hotspot usage.
Japan unlimited data eSIMs offer a range of plan durations to suit different travel schedules. Common options include plans for 3, 5, 7, 8, 10, 15, and up to 30 days. This flexibility allows travelers to choose a plan that precisely matches the length of their stay in Japan without overpaying for unused days.
No, a physical SIM card is not required for setting up a Japan unlimited data eSIM. This digital SIM solution is embedded directly into compatible devices, eliminating the need to insert or remove a physical card. Activation is typically done by scanning a QR code, offering convenience and preventing issues like losing a small physical SIM.
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