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[10% OFF] Japan eSIM Card | KDDI & SoftBank 5G Daily / Total Data eSIM

[10% OFF] Japan eSIM Card | KDDI & SoftBank 5G Daily / Total Data eSIM

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  • [Best for iOS Users: One-Tap Installation, No Manual Setup Required!] Update your device to iOS 17.4 or later and use the latest version of the KKday app to install your eSIM in just one tap—no manual setup required. Stay connected effortlessly while traveling.
    ⚠️ Android users: If your device supports eSIM, please contact customer support to receive a dedicated one-tap installation link.
  • A new way to go online—no SIM swap needed, enjoy fast 5G internet conveniently.
  • Scan and install immediately after receiving the voucher—no need to pick up or wait for a physical SIM.
  • Supports Apple and various Android phones.
    * Note for Samsung users: eSIM compatibility depends on the country of purchase. Samsung phones purchased in Taiwan do not support eSIM.
  • This eSIM roaming data service is provided by China Mobile International Limited.
  • For common eSIM questions, please refer to the Help Center ( https://www.kkday.com/zh-tw/help-center/category/65).

Descarga la app, en la primera compra al pagar ingresa «APP90» y obtén un descuento inmediato de 90 al alcanzar el importe mínimo.
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Descripción del producto

Please confirm that your device is compatible with eSIM before purchasing

Please confirm that your device is compatible with eSIM before purchasing

English iPhone Japan eSIM installation guide, with detailed steps from settings to scanning QR code, guiding users to quickly activate KDDI SoftBank 5G network.

eSIM Installation Instructions

Traditional Chinese Android Japan eSIM installation guide, with detailed steps from settings to scanning QR code, for easy activation of KDDI SoftBank 5G eSIM.

eSIM Android Installation Instructions - Taking Google Pixel 3a as an example

English guide for manual Japan eSIM setup, demonstrating how to extract QR code information from KKday voucher and enter SM-DP+ address and activation code for quick 5G network activation.

How to manually enter the enablement code

SIM Card Specifications

Data Usage SpecificationsUnlimited data, 500MB, 1GB, 2GB, 3GB, 5GB, 10GB, 20GB, 30GB, 50GB
Transmission Specifications5G/4G
Signal Coverage AreaJapan
Mobile CarrierKDDI、SoftBank
Supported SizeseSIM
Hotspot SharingAvailable
Supported Frequencies(4G)B1(2100 MHz)
Top-Up AvailabilityTop-up unavailable
ExcludesVoice calls, Texts
Not SupportedSIM-locked device, Carrier-customized device, Pocket WiFi, modified phones, 3G phones, translation machines, phones without eSIM function
Network TypeRoaming
Mobile Virtual Network Operator (MVNO)China Mobile International Limited

Purchase Notice

To check traffic usage: click https://flow-consumer-center.billionconnect.com/usageq/kkdayota/en to go to the query page.

Real-time usage tracking is not supported. Roaming service providers’ usage data is updated with a 1-hour delay. (For example, if you query at 10 a.m., you will get the usage data as of 9 a.m.)

Reminders

  • You can install the eSIM before arriving at your destination, activate the package after arriving at your destination, and the usage date will start calculating.

  • An internet connection is required to install the eSIM. It is recommended that you use the free airport Wi-Fi to install it before departure or at your destination.

  • A QR code can only be scanned once with one mobile phone, and the device cannot be changed after binding.

  • Daily plan / Total plan: 24-hour system. After eSIM is activated, 24 hours is considered a day. (Users purchased a 3-day Internet plan and installed and activated it at 10:00 am on 9/1. This plan will end at 9:59 am on 9/4)

  • Valid for use within 90 days from the date of order placement, otherwise invalid.

  • Please remember to turn off data roaming on the original SIM card to avoid using the mobile network of the original SIM card and incurring high roaming charges.

  • Once installed, the eSIM can be deleted and reinstalled up to 10 times on the same device. The eSIM can be installed again within the validity period of the QR code (for an unactivated eSIM) or within the validity period of the package (for an activated eSIM). After the validity period has expired, it can no longer be installed.

  • If an error message is displayed after scanning, it does not mean that the eSIM is invalid. Please restart your phone and go to [Settings > Mobile Services] to check whether the eSIM has been added. Or contact customer service for assistance. Do not scan other QR Codes to install multiple eSIMs on one phone.

  • Please delete the description file for iPhone (check steps: Settings -> General -> Device Management, scroll to the bottom, if there is no description file, it means it is normal) to avoid problems with smooth use.

  • The quality of telecommunications networks varies from country to country. The geographical location and telecommunications construction of each country are also different. We are unable to request a refund due to signal conditions in a few areas. If you encounter a poor signal, you can manually switch telecom operators. To switch operators, go to Network Selection/Telecom Operator>Auto Close> and you will have different operators to choose from after searching.

  • In order to maintain the quality of Internet connections and the Fair Usage Policy (FUP), telecommunications companies around the world sometimes impose traffic restrictions on customers who use a large amount of Internet traffic in a short period of time, which may result in Internet access failure or slow Internet speed. To ensure that you can connect to the Internet normally, please try to avoid watching/downloading videos for a long time, updating software, sharing the Internet (hotspot) with others, or other usage behaviors that consume a lot of data.

  • If the eSIM plan is not fully used or the plan is deleted without the approval of customer service staff, it will not be reissued or refunded.

  • Check data usage: Click https://flow-consumer-center.billionconnect.com/usageq/kkdayota/en to jump to the query page. Real-time usage tracking is not supported. Roaming service providers' usage data updates are delayed by 1 hours. (For example: the data query at 10 am is the usage as of 9 am.)

How to Use

  • Installation steps:
    Method 1: Scan QR Code
    Method 2: Manually add SM-DP_Address and Activation Code

  • Steps to enable activation:
    1. After arriving at your destination, turn off other SIM cards and only turn on the eSIM and its data roaming.
    2. Set the APN of the eSIM (APN will usually be automatically identified, but if it cannot be automatically identified, you need to set it manually)
    APN: cmlink
  • The validity period is 90 days from the order date. It will be invalid after the expiration date.

Cancellation Policy

  • Once the order has been completed, it cannot be canceled, modified, or refunded
NOTE
  • 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 your refund request is confirmed, KKday will initiate the refund to your original payment method within 15 days. The actual refund timing depends on your card-issuing bank’s policy.

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