Global Background


Choose from our range of eSIM packages

Available eSIM Packages



US $4.50


1 GB


7 Days



US $8.50


3 GB


10 Days



US $11.50


5 GB


15 Days



US $22.00


10 GB


30 Days

Commonly Asked Questions:

Additional Information

eSIM Japan

Japan, the "Land of the Rising Sun," is a breathtaking destination all year round because of its distinctive culture, cutting-edge technology, hospitable residents, and breathtaking environment. It is the world's fourth-largest island nation, with over 6,852 islands. Its five major islands are Honshu, Hokkaido, Kyushu, Shikoku, and Okinawa.

Ensuring consistent internet connectivity throughout your journey in Japan enables you to safely navigate, capture and share images, and maintain communication. eSIMs provide a convenient method to access the internet without incurring roaming charges or purchasing SIM cards from local providers.

For anyone traveling to Japan, having an internet connection is absolutely essential. Here is where acquiring an eSIM becomes highly recommendable. One of the main benefits of using an eSIM when traveling is the convenience it provides.

If you travel to a foreign country, it is imperative to replace your regular SIM card. Using eSIM technology, you have the convenience of swiftly and effortlessly acquiring and activating a diverse selection of plans.

By bringing an eSIM on your journey, you will avoid misplacing the small physical SIM cards. Travelers visiting Japan for either business or holiday purposes can discover an ideal eSIM package that fulfills all their connectivity requirements.

This article examines the use of Japan eSIM plans.

How does a Japanese eSIM package work?

An eSIM is an integrated or digitized digital SIM that functions similarly to a traditional physical SIM card. Thus, rather than inserting a tangible SIM card, you can just utilize an application to establish a connection with a different mobile data service provider. You can eliminate the need to swap SIM cards when you are traveling. To ensure faster and more convenient connectivity on the fly, obtain your eSIM in advance.

Prior to activating an eSIM on your mobile device, ensure that it is compatible with eSIM technology. After confirming that your phone supports eSIM, you have the freedom to choose any eSIM provider that offers Japan packages, such as KnowRoaming. They offer data plans ranging from seven to 30 days.

To activate the plan, you must first use the QR code on your mobile device provided by the eSIM provider. To complete the task, simply install and activate.

Other resources: What is an eSIM and how does it work?

How to activate your Japanese eSIM data plan?

In order to install your eSIM, it is necessary to have a reliable and operational internet connection. We recommend activating your eSIM either before departing or upon arrival in Japan. After activating your eSIM, immediate usage is possible.

The process of installing and activating an eSIM is straightforward. Let's look at the process of activating a KnowRoaming eSIM.

Choose the package that aligns with your specific needs, whether it is for home use, travel, or a combination of these.

Once you have installed your eSIM in your home country, you can turn it off until you reach Japan. The activation of the package only occurs when you use your eSIM in Japan.

Scan the QR code on the checkout page or the confirmation email you received from KnowRoaming, then accept and continue all prompts.

When you arrive in Japan, follow these steps to activate your eSIM on your Android or iOS device:

On Android devices

  • Go to Settings on your phone.
  • Tap on Connections.
  • Tap on Sim Manager.
  • Tap on Mobile Data, and set it to your eSIM.
  • When you arrive, go to Settings.
  • Tap on Connections.
  • Tap on Mobile Networks.
  • Turn on data roaming.
  • On iOS devices

  • You need to first switch mobile data to your eSIM.
  • Go to Settings and tap on Mobile Data or Cellular Data.
  • On the Mobile Data page, select the Mobile Data option at the top.
  • Select your eSIM.
  • Turn on roaming for your eSIM.
  • You are now ready to use the Japan eSIM to connect with family and friends and surf the internet.

    Why Choose KnowRoaming?

    KnowRoaming offers eSIM plans that grant access to more than 200 global destinations. If you intend to travel to numerous countries or regions, an international eSIM will connect you wherever you go.

    As soon as you arrive at your destination, your eSIM automatically connects to the local network, allowing you to relax and make use of a consistent data plan during your journey.

    If you purchase an eSIM bundle from KnowRoaming, you can expect to receive exceptional service. Customers can use KnowRoaming's website, to obtain comprehensive information about eSIMs and address any inquiries they may have.

    The "Frequently Asked Questions" area provides comprehensive information on setup, troubleshooting, and common inquiries. The user-friendly interface ensures effortless navigation and quick access to the desired information.

    To obtain additional assistance, please reach out to KnowRoaming through their online form submission, WhatsApp, or live chat feature on their website. Your query will receive a prompt response.

    You can easily purchase a Japan eSIM with KnowRoaming by following these steps:

  • Choose your package based on the most favorable offer for your trip and specific needs.
  • After payment, you will receive a QR code to scan. To install it, scan your eSIM on a mobile device.
  • Activate your mobile device by setting its eSIM as the primary data connection upon arrival at your location.
  • Enable roaming to establish and maintain a connection with the local network and receive support whenever necessary.