GoJapan eSIM – Review & Full Test 2026

🌍

Countries covered

1 countries

💶

Starting at

2,50 €

📶

Network

5G

📊

Data

Starting at 500 MB

❌

Calls/SMS

No

📱

App

iOS & Android

Exclusive Japan specialist: optimized coverage and deep expertise since 2016.

Same-day activation and 100% digital management, ideal for travelers in a hurry.

Smart switching technology between KDDI and SoftBank for superior stability.

Multilingual support (10 languages) and 24/7 availability for foreign tourists.

Ultra-flexible and transparent plans, from very short duration to full year.

Official ratings

Destinations & coverage

GoJapan is exclusively specialized in Japan coverage, offering optimal connectivity throughout the Japanese archipelago.

By region

Key points

✅

Advantages

  • ✓ Exclusive specialization in Japan ensuring unmatched coverage and expertise.
  • ✓ Same-day installation and activation from your phone, no paperwork required.
  • ✓ Automatic switching between KDDI and SoftBank networks for better stability.
  • ✓ Responsive and multilingual (10 languages) customer support available 24/7.
  • ✓ Very flexible plans, from 1 day to 365 days with varied data volumes.
  • ✓ Hotspot sharing allowed on all plans.
  • ✓ Intuitive mobile app allowing real-time data usage tracking.
⚠️

Disadvantages

  • ✗ Coverage limited to Japan only, unsuitable for multi-destination trips.
  • ✗ No calls or SMS included, data only (for calls, use WhatsApp or Skype).
  • ✗ Less international visibility and presence compared to major global brands.
  • ✗ Cheapest plans (short duration) may be proportionally more expensive than long plans.
  • ✗ Requires a phone compatible with eSIM, excluding older models.

Customer reviews

web

4/5

“

Excellent service! Very easy installation in a few minutes before the flight. Network coverage in Tokyo, Kyoto and Osaka is flawless with very fast 4G/5G. The app is intuitive and the online chat support is responsive.

January 1, 2026

web

4/5

“

GoJapan saved me during my last visit. Same-day activation, reliable data all over Japan and French support from start to finish. Highly recommended for any stay in Japan.

December 1, 2025

web

4/5

“

Perfect for an extended stay. I took the 40-day plan with 10GB and the automatic network switching works really well, even in rural areas of Kyushu.

November 1, 2025

Description

GoJapan is an eSIM provider exclusively specialized in Japan, offering plans from 1 to 365 days covering all travelers’ needs. Based in Tokyo since 2016, the company offers plans from 500MB to unlimited data, with same-day activation, smart switching technology between KDDI and SoftBank networks, and multilingual support in 10 languages. Transparent pricing from €3, hotspot sharing allowed, and an intuitive mobile app.

How it works

Make sure your smartphone supports eSIM (recent iPhones, Samsung Galaxy, Google Pixel, etc.). See the full list on GoJapan's website.

Go to https://gojapan.ai and choose your language (French available).

Choose your travel duration (1 to 365 days) and data volume (500MB to unlimited) suited to your needs and usage (social networks, GPS navigation, streaming).

Enter your email address and payment information. GoJapan accepts credit cards, PayPal, Apple Pay and Google Pay.

You will immediately receive an email containing a QR code or an installation link to download the eSIM profile.

Follow GoJapan's instructions: scan the QR code or click the installation link from your phone settings (Settings > Mobile Data > Add eSIM plan).

Once on Japanese soil, switch to the GoJapan eSIM in phone settings and activate mobile data. The connection establishes automatically.

⚠️ If it fails

✅ Ensure you have a stable internet connection (WiFi or data) before scanning. If the problem persists, GoJapan offers a direct installation link by email. Contact their chat support (available 24/7) to get another QR code or alternative link.

✅ Check that GoJapan eSIM is properly selected as the primary plan for mobile data. Toggle airplane mode on/off, restart your phone and make sure roaming is enabled. GoJapan switches automatically between KDDI and SoftBank, but you can also try forcing a network from settings.

✅ The GoJapan app shows real-time consumption. Disable automatic updates (iOS, Android, apps), close heavy apps (YouTube, Netflix), and reduce streaming quality. You can also buy a data recharge directly from the app.

✅ GoJapan offers 24/7 multilingual support (French, English, Japanese, etc.) via online chat, email ([email protected]), phone (+81-3-6907-1882) or directly through LINE (QR code provided in the order email). Response is usually fast within hours.

Alternatives

FAQ

Absolutely! GoJapan offers very flexible plans suited for tourists: 1, 3, 7, 11, 17, 40 days and more. For a week in Tokyo and Kyoto, a 7-10 day plan with 5-10GB data is generally enough for GPS, social networks and light streaming.

Yes, connection sharing is allowed on all GoJapan plans. You can share your data with other devices (tablet, laptop, a friend's phone) without additional restrictions.

GoJapan uses automatic switching technology between the two main Japanese networks (KDDI and SoftBank). The eSIM always selects the network offering the best coverage and stability according to your location, ensuring a reliable connection throughout Japan, even in rural areas.

GoJapan eSIM is data-only, without calls or SMS included. To communicate, use apps like WhatsApp, Skype, Viber, Google Meet or FaceTime that work perfectly on GoJapan data connection.

GoJapan accepts credit cards (Visa, Mastercard), PayPal, Apple Pay and Google Pay. You can pay directly from the website or mobile app, and activation takes a few minutes.

GoJapan eSIM works on most eSIM-compatible smartphones: modern iPhones (from iPhone XS), Samsung Galaxy, Google Pixel, OnePlus and other recent devices. Check the official website for a detailed list of compatible devices or contact 24/7 support if in doubt.

Yes, if your phone supports Dual SIM technology (one physical SIM + one eSIM), you can use your physical SIM for calls/SMS from your usual operator and GoJapan eSIM for data. It's very convenient to stay reachable and connected.

GoJapan offers 24/7 multilingual support (French, English, Japanese, Mandarin, Portuguese and more). You can contact them via online chat, email ([email protected]), phone (+81-3-6907-1882), Facebook Messenger or LINE. Responses are usually very fast.

Company info

Legal name: Go Japan Co., Ltd.

Founders: Nguyen Quoc Bao

Address: Taito City, Ueno 7-6-5 VORT Ueno II Tower A 2F, Tokyo 110-0005, Japan

Email: [email protected]

Website: https://gojapan.ai

Support

24/7

phone, email, chat, facebook_messenger, line

Accepted payments

Credit Card, PayPal, Apple Pay, Google Pay

Platforms

Web, iOS app, Android app

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