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Data Only Japan eSIM

Japan eSIM - Unlimited 5G Data Plan

Japan eSIM - Unlimited 5G Data Plan

  • 5G Unlimited Data eSIM
  • KDDI
  • Per Day Plans
Regular price ¥1,980
Regular price Sale price ¥1,980
Sale Sold out
Taxes included.

Details

Line Type 4G / 5G
Data Volume Unlimited (No Cap)
Carrier Network KDDI(au)
Coverage Area Japan
Tethering (Personal Hotspot) Available
Voice Calls Not Supported (Only via VoIP app)
eSIM Delivery Method Sent by Email
Issuance Time Immediate

APN Information

APN uad5gn.au-net.ne.jp
User Name au@uad5gn.au-net.ne.jp
Password au

Important Notice

  1. Please start using (activate) within 30 days of purchase. After 30 days, activation will no longer be possible.
  2. While tethering (personal hotspot) is technically possible, we do not recommend it for optimal performance. Please note that when using tethering, a data limit of 3 GB will apply. Once this limit is reached, your connection speed will be reduced to 128 kbps.
  3. The available network (4G / 5G) may vary depending on your smartphone's band.
  • 4G:BAND28(700MHz), 18/26(800MHz), 11(1.5GHz), 3(1.7GHz), 1(2.0GHz), 41(3.5GHz),42(3.5GHz)
  • 5G:n28(700MHz), n3(1.7GHz),n41(2.5GHz), n78(3.5GHz), n77(4.0GHz), n78(3.7GHz), n257(28GHz)

About this item

  • 【KDDI Network】Stable and high-speed 5G data communication via the major telecommunications carrier (KDDI) network (in areas with only 4G coverage, it will switch to 4G).
  • 【Completely Unlimited】Completely unlimited with no slowdowns based on data usage. Enjoy stress-free data communication for activities like video streaming, online searches, and SNS uploads.
  • 【Easy Setup】Simply install the SIM and start using it with an easy setup process in as little as 30 seconds.
  • 【Reliable Support】Both customer support and airport stores are directly managed by our company. Our professional bilingual (Japanese / English) staff will support you from the time of application to the end of your use.
  • 【Payment Method】
    American Express Apple Pay Google Pay Mastercard Visa
View full details

Price List by Plans

*Tax included

Plan Price
1 Day ¥1,980
2 Days ¥2,420
3 Days ¥2,860
4 Days ¥3,300
5 Days ¥3,740
Plan Price
6 Days ¥4,180
7 Days ¥4,620
8 Days ¥5,060
9 Days ¥5,500
10 Days ¥5,940
Plan Price
11 Days ¥6,380
12 Days ¥6,820
13 Days ¥7,260
14 Days ¥7,700
15 Days ¥8,140
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5G Unlimited Data

All plans include unlimited data via high-speed 5G. Easily select a plan based on your usage period.

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High-quality MNO Network

All plans offer stable data communication through the network of a Japan major telecommunications carrier (KDDI). The available coverage area spans 99% of Japan, ensuring reliable service even in mountainous areas and regional cities.

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Flexible Plans Based on Usage Days

Available plans range from 1 to 15 days. The number of available days can be customized freely by purchasing multiple plans (e.g., purchase two 15-day plans for a total of 30 days).

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No App Installation

No need to install an app or complete any setup in advance. Simply scan the QR code and get online instantly.

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Purchase Anytime, Even While Traveling

We accept credit cards issued outside Japan. You can make purchases anytime even while traveling, via our online store.

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Reliable Customer Support

Both customer support and airport stores are directly managed by our company. Our professional bilingual (Japanese / English) staff will support you from the time of application to the end of your use.

Important Check Before Purchase
Is your Device Compatible with eSIM?

If your device is not eSIM-compatible, you will not be able to install the eSIM.
Please ensure your device supports eSIM before making a purchase.

Click here to check

Customer Reviews

Based on 11 reviews
73%
(8)
27%
(3)
0%
(0)
0%
(0)
0%
(0)
m
maria pavlova
Very good option

It was very useful and worked well

Taka
Takahashi
How to set it up

I didn't really understand how to set it up, so I contacted them by email and they answered the phone and kindly explained it to me.
Normally, I would purchase a SIM card and use it, so I think I would be able to use it even after the 30-day usage period as long as I had some remaining balance, but this time it stopped after 7 days as per my contract.

A
Anonymous
Easy and convenient

No special settings required, just use it as an eSIM <br>I am very grateful that I could use it immediately on the same day.

shore
Koichiro Kishi
Configuration Support

Previously, I paid 500 yen and received support for setting up the esim at the store (Haneda Airport Terminal 3), but is this no longer available? I have always borrowed a simple mobile phone and set up your esim 50G for 30 days on my SIM-free iPhone that I use overseas (in the US). This time, I purchased it exactly 58 days (not to exceed 60 days) before arriving in Japan, but when I receive the simple mobile phone, will you still provide support for setting up the esim? Of course, I don't mind paying for it. It may not be that difficult, but it's my first time setting it up myself, so I'm a little worried.

large
Yuuta Omuro
Good for teleworking

It can be used as a secondary mobile phone for telework.

  • Step 1

    Select a Product

    Please check if your smartphone meets the following conditions before purchasing:

    1. It is SIM unlocked or SIM-free.
    2. It is eSIM compatible.

    After confirming the above, select the eSIM product and the quantity you wish to purchase.

    How to Check eSIM Compatibility? 
  • Step 2

    Enter Customer Information

    Enter your name, email address (for receiving eSIM QR code), billing address, and credit card information.

  • Step 3

    Receive eSIM QR Code

    The eSIM installation QR code and setup instructions will be sent to your email address.

Many airport stores and hotel businesses have joined us as eSIM site promotion partners.

  • Easy Internet Access for Japan Travel

    No need to search for WiFi spots! Enjoy reliable, high-speed internet while on the move or at tourist spots. Easily use map apps, discover the best restaurants, and enhance your travel experience with fast and stable connectivity at your fingertips.

  • A Temporary Communication Solution When Returning to Japan

    eSIM is perfect for short-term visits or temporary returns to Japan. No long-term contracts mean you can choose flexible plans tailored to your stay duration.

  • Reliable Backup Line for Business Trips

    No need to worry about sudden business trips. eSIMs can be purchased and installed instantly online, making them useful as sub-lines for use only when necessary. By using different lines for business and personal use, you can manage your time more effectively.

  • Travel Light with Just One Device

    Reduce your travel burden with eSIM! Unlike rental WiFi devices that require carrying multiple gadgets (smartphone, router, chargers), eSIM allows you to enjoy seamless connectivity with just your smartphone. Travel light and stress-free.

  • Use Alongside Your Own SIM

    eSIM works alongside your physical SIM, allowing you to keep voice calls active while using eSIM exclusively for data. Stay reachable by family and friends without compromising on affordable data plans.

  • Great Value & Time Efficiency

    From purchase to activation, everything about eSIM is handled online quickly and conveniently. Buy additional plans anytime, anywhere, without being tied down by location or schedule.

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How to Check if Device is eSIM Compatible

eSIM Activation Guide

Once the purchase process is complete, a QR code and setup instructions will be sent to the email address you provided.
If you're unsure how to set it up, please refer to the guide below.

iPhone
Android

iPhone

1Open [Settings] and tap [Cellular].
2Tap [Add eSIM], then select [Use QR code].
3The camera will activate. You can now choose one of the following options:
  • If displaying the QR code on another device: Scan the QR code displayed on the other device.
  • If using a single device: Tap 4"Open Photos" or 5"Enter details manually."
4Open Photos
"Open Photos" may not be displayed depending on the version of iOS.
  1. Close the Settings app and open the Mail application.
  2. Find the email with your eSIM information and press and hold the QR code to save it as a photo.
  3. Return to Settings and repeat steps 1 - 2. The saved QR code will appear in the "Open Photos" screen. Tap it to start activation, then follow the on-screen instructions.
5Enter Details Manually
  1. Open your email and copy the [SM-DP+ address] and [Activation code].
  2. Paste the details in the settings screen.
  3. Tap [Next] in the upper-right corner to start activation and follow the on-screen instructions.
Note: When copying the [SM-DP+ address], be sure to remove any unnecessary characters like [http://] or trailing slashes (e.g., [http://(SM-DP+address)/]).
iNotes
  • A network connection is required for eSIM setup. Please connect to Wi-Fi or mobile network first before proceeding with the following steps.
  • It may take a few minutes to activate an eSIM; please wait a few moments after scanning the QR code until "Setup Complete" appears on the screen.

Android

1Open [Settings] and tap [Network & internet].
*Note : Settings might vary by manufacturer for Android devices.
Android eSIM Activation step 1
2Open [Add more], then tap [Download a SIM instead].
Android eSIM Activation step 2
3Tap [Next] to open the camera. Choose one of the following options:
  • If you are scanning a QR code: Display or print the QR code on another device, then scan it with the camera. Follow the on-screen instructions to complete the setup.
  • If setting up without a QR code (manual input): Tap [Help] at the bottom left and follow the instructions in steps 4 - 6.
Android eSIM Activation step 3
4Tap [Enter it manually] in the description.
Android eSIM Activation step 4
5Copy the [SM-DP+ ActvCode (for Android)] from the email we sent and paste it into the input field on your smartphone, then tap [Continue].
The image below shows the contents of the email on the left side and the Android screen on the right side.
Android eSIM Activation step 5
6When the following screen appears, tap [Download].
Android eSIM Activation step 6
iNotes
  • A network connection is required for eSIM setup. Please connect to Wi-Fi or mobile network first before proceeding with the following steps.
  • It may take a few minutes to activate an eSIM. Please wait a few moments after scanning the QR code until "Setup Complete" appears on the screen.
  • If you cannot connect to the internet after setting up:
    • If you set up using a QR code: Manually configure the APN information as described in the email.
      APN can be set from [Settings] > [Network & internet] > [Mobile Network] > [Access Point Name].
    • If you set up manually: Turn on roaming.
      Go to [Settings] > [Network and internet], tap the settings icon next to the eSIM you have set up, and turn on the roaming item.
    • If using a Google Pixel device and still unable to connect after setting up eSIM and APN, please go to roaming settings and turn on it.

Any Questions?

Committed to ensuring that you take advantage of every chance.
Please do not hesitate to contact our customer support at any time if you need further assistance.

Call Customer Support

050-5527-0564

10:00-13:00, 14:00-17:00 (Mon to Sun)