eSIMs: The Best Option for Mobile Data When Traveling to Japan

Japan eSim

Welcome to Simbud, your go-to resource for discovering the best eSIM deals in Japan. Explore the benefits of eSIM technology and find top connectivity options in Tokyo, Kyoto, Osaka, and other major cities across Japan.

Find the best prepaid eSIM data plans

Find the best prepaid eSIM data plan for your trip to Japan. Use our easy tool to select a plan that fits your stay and data needs. Compare options from different providers for seamless connectivity during your travels.

Powered by SimBud

Why Choose eSIM Over Local SIM When Traveling in Japan?

Planning a trip to Japan? Consider the benefits of using an eSIM:

  • Convenience: Activate digitally before your trip, skipping the need to buy a physical SIM upon arrival.
  • Cost-Effective: Easily compare competitive data plan prices with Simbud.
  • Seamless Integration: Enjoy immediate connectivity upon arrival, with dual SIM capability for calls and data.

Opt for an eSIM for hassle-free connectivity in Japan with Simbud.

What factors when choosing an eSIM in Japan through Simbud?

At Simbud, explore numerous providers and a wide range of eSIM plans offering different prices and data options. Compare and select the perfect eSIM plan tailored to your needs in Japan, with options varying in coverage, data limits, and additional services such as customer support. Enjoy seamless connectivity throughout your travels with the ideal eSIM choice. 

How to activate an eSIM card

Connect to Wi-Fi

Make sure your phone is connected to Wi-Fi.

Settings > Network & Mobile settings

Go to your network & mobile settings from your phone settings and follow the prompts to add a new data plan or network to your device.

Add a new plan or network


Settings > Mobile Data > Add Data Plan


Settings > Connections > SIM card manager > Add mobile plan

Scan the QR code

Scan the QR code provided by your carrier to complete the process.

To reassign eSIMs to a new device without getting a QR code from their carrier, iPhone users can use the eSIM Quick Transfer feature to reassign eSIMs to a new device following roughly the same steps.
Not all carriers support eSIM Quick Transfer, and you need to be using iOS 16 or later for it to work.

FAQs About Travel in Japan with eSIMs

What does eSIM stand for?​

An eSIM is a digital SIM card that allows you to activate a cellular plan without using a physical SIM card. It works by downloading a carrier profile directly onto your device, enabling you to connect to mobile networks seamlessly.

Activation is easy. After purchasing an eSIM plan from a provider, you will receive a QR code. Scan this code with your device’s camera, and follow the on-screen instructions to download and activate the eSIM profile

Using an eSIM has a negligible impact on battery life. Modern devices are optimized to manage multiple SIM profiles efficiently, ensuring your battery performance remains strong.

Yes, you need to unlock your phone to use an international eSIM or a physical SIM card from another country. Unlocking your phone allows you to use it with different carriers and networks, which you’ll need to do if you travel abroad.

Using an eSIM provides several benefits, such as the convenience of activating a plan instantly, avoiding the hassle of changing physical SIM cards, and often more competitive pricing for mobile data.


Yes, most eSIM-compatible devices support dual SIM functionality. This allows you to use your regular SIM card and an eSIM simultaneously, giving you the flexibility to manage personal and travel data plans.

If you run out of data, you can easily top up your plan or purchase an additional eSIM plan through your provider’s app or website. Many providers offer flexible options to ensure you stay connected.

Our widget helps you find the best prepaid eSIM data plans tailored to your travel needs. Filter by duration, data capacity, and provider to select the ideal plan for your trip.

Yes, you can keep your local phone number active on your primary SIM card while using an eSIM for data in Japan. This way, you stay reachable on your regular number while benefiting from a local data plan.

Using an eSIM has a negligible impact on battery life. Modern devices are optimized to manage multiple SIM profiles efficiently, ensuring your battery performance remains strong.

Compare the providers