Traveling to Japan in 2026 is a fascinating experience, but staying connected is essential to enjoying it to the fullest. From using Google Maps to translating menus or sharing your adventures, having internet access will make your trip much more comfortable.
In this Just in Time guide, we explain everything you need to know about SIM cards for Japan, connection alternatives, prices, and tips for choosing the best option for your type of trip.
SIM card Japan: the best way to have internet during your trip
SIM cards for Japan are the most practical option for having a data connection throughout your trip. They allow you to access the internet instantly, with good coverage and without relying on public Wi-Fi networks. There are different types: the digital eSIM , the physical SIM card , and the Pocket WiFi .
Types of internet connection in Japan
eSIM Japan (recommended)
An eSIM is a virtual SIM card that's installed directly on your phone using a QR code. You don't need to change your regular SIM card, so you keep your phone number. It's ideal for those looking for convenience and instant connectivity upon arrival.
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Advantages : easy installation, no need to pick anything up at the airport, and stable connection throughout the country.
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Price : from €19 for 5 GB (Holafly, Airalo, SimOptions).
Japan physical SIM card
If your phone isn't compatible with eSIM, you can opt for a physical prepaid SIM card. It's inserted directly into the device and offers a fast and reliable connection.
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Advantages : Full coverage in Japan, ideal for those who prefer something tangible.
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Price : from €25 for 5 GB or €40 for 10 GB (Bic Camera, Yodobashi, online stores or airports).
Pocket WiFi Japan
The Pocket WiFi is a small, portable router that allows you to connect multiple devices simultaneously. It's ideal for couples, families, or groups, as it offers unlimited, high-speed internet access.
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Advantages : stable connection, high speed, national coverage.
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Price : from €6 per day or about €40 per week (can be picked up at the airport or delivered to the hotel).
Free WiFi in Japan
Japan offers free Wi-Fi in some public places such as airports, JR stations, and cafes, although it's not always reliable. It can be useful in emergencies, but it's not recommended to rely solely on this option.
Where to buy your SIM or eSIM card for Japan
You can purchase your SIM or eSIM before your trip or directly at the airport upon arrival in Japan:
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Before your trip (online) : Platforms like Holafly , SimOptions , or Airalo offer immediate delivery or QR code installation. It's the most convenient option.
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At the airport : in Narita , Haneda or Kansai you will find vending machines and shops with physical SIM cards and Pocket WiFi routers.
- In local stores : chains like Bic Camera , SoftBank or Yodobashi Camera also sell them at similar prices.
Tips for choosing the best internet option in Japan
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Mobile compatibility: Make sure your device is unlocked and compatible with Japanese networks.
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Trip duration : If you're going for less than 10 days, an eSIM or physical SIM is sufficient; for longer stays, consider a Pocket WiFi.
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Number of devices : If you are traveling in a group or with several devices, the Pocket WiFi is more cost-effective.
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Coverage : all options use networks such as NTT Docomo or SoftBank, with excellent coverage throughout the country.
- Data consumption: check if your usage will be moderate (social networks and maps) or intensive (videos, constant browsing).
Price comparison and indicative budget 2026
To help you decide, here is a comparison table of prices and advantages according to the type of connection:
Indicative comparison:
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eSIM Japan : €19–€35 (5–10 GB / 15 days) → Ideal for individual travelers.
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Physical SIM : €25–€40 (5–10 GB / 15 days) → Good option for phones without eSIM.
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Pocket WiFi i: €40–€70 (unlimited / 7 days) → Perfect for sharing connection.
- Free WiFi : €0, but limited in stability and range.
Just-in-Time Recommendation : If you're traveling for less than 15 days and only need personal connectivity, an eSIM is the best option. For groups or families, Pocket WiFi offers greater flexibility and savings for everyone.
Stay connected in Japan with the option that best suits you
Having a good internet connection in Japan will allow you to move around safely, communicate easily, and enjoy your trip stress-free. Whether you use an eSIM, a physical SIM, or a Pocket WiFi device, the important thing is to choose the option that suits your travel style.
At Just in Time we help you optimize your time and your experiences: because being connected is also part of traveling better.
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