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🇯🇵 100% Japanese eSIM

Travel Japan, simplified.

Enjoy an authentic Japanese eSIM with a local IP address. The best prices on the market, instant QR code activation, and reliable connectivity across Japan.

Download on the App Store Get it on Google Play
Companion Mobile
Select your plan

1GB

Validity: 7 days Carrier: IIJ
€0.98

3GB

Validity: 30 days Carrier: IIJ
€2.52

5GB

Validity: 30 days Carrier: IIJ
€3.78
Recommended

10GB

Validity: 30 days Carrier: IIJ
€6.58
Recommended

20GB

Validity: 30 days Carrier: IIJ
€9.48

50GB

Validity: 30 days Carrier: IIJ
€23.00
✓ Native Japanese IP
⚡ Active in 2 min
100%
Authentic Japanese IP
2 min
Instant activation
€0.98
Best price guaranteed
Japan
Nationwide coverage
Features

Why choose Companion Mobile?

An eSIM designed for discerning travelers who want authentic, reliable Japanese connectivity at the best price.

Authentic Japanese eSIM

Unlike international eSIMs, our cards are issued by Japanese carrier IIJ. You get a native Japanese IP address, essential for accessing all local services without restrictions.

Best prices on the market

Starting from just €0.98 for 1 GB, our plans are unbeatable. No hidden fees, no subscription. Pay only for what you need during your stay in Japan.

Instant QR code activation

Scan your QR code and get connected in under 2 minutes. No need to swap physical SIM cards — everything is done directly from your phone, even before you land.

Full nationwide coverage

Thanks to the IIJ network, enjoy reliable 4G/LTE coverage across all of Japan. From Tokyo to Osaka, Kyoto to rural areas, stay connected wherever you go.

Pricing

Plans for every trip

Choose the plan that matches your stay. All plans include a native Japanese IP and instant activation.

1 GB
0.98 €
Validity: 7 days
Carrier: IIJ
Japanese IP included
Choose this plan
3 GB
2.52 €
Validity: 30 days
Carrier: IIJ
Japanese IP included
Choose this plan
5 GB
3.78 €
Validity: 30 days
Carrier: IIJ
Japanese IP included
Choose this plan
Recommended
10 GB
6.58 €
Validity: 30 days
Carrier: IIJ
Japanese IP included
Choose this plan
Recommended
20 GB
9.48 €
Validity: 30 days
Carrier: IIJ
Japanese IP included
Choose this plan
50 GB
23.00 €
Validity: 30 days
Carrier: IIJ
Japanese IP included
Choose this plan
How it works

Connected in Japan in 3 steps

From purchase to connection, everything is done from your phone in just a few minutes.

1

Choose your plan

Select the data volume that matches your stay in Japan. From 1 GB to 50 GB, there's a plan for every traveler.

2

Scan the QR code

After purchase, you'll receive an installation QR code. Scan it with your phone to install your eSIM instantly.

3

You're connected!

Activate your eSIM when you arrive in Japan and enjoy fast internet with a native Japanese IP address.

Testimonials

They travel connected with Companion Mobile

Thousands of travelers trust Companion Mobile for their internet connection in Japan.

"I've tried many eSIMs for Japan, and Companion Mobile is by far the best. The Japanese IP makes all the difference for accessing local services. And the price is unbeatable!"

ML
Marie L. Trip to Tokyo & Kyoto

"Ultra-fast activation — I had internet on the train from Narita airport. The 10 GB plan was more than enough for two weeks. I recommend it 100%."

TD
Thomas D. 2 weeks in Japan

"This is my third trip to Japan and I never leave without Companion Mobile. The value for money is excellent and the app is really intuitive. Even my mum managed to set it up!"

SK
Sophie K. Frequent Japan traveler
FAQ

Frequently asked questions

Everything you need to know before ordering your Japanese eSIM.

An eSIM is a digital SIM card built into your phone. It works just like a regular SIM, but without a physical card. Most recent smartphones are compatible: iPhone XS and later, Samsung Galaxy S20 and later, Google Pixel 3 and later, and many more. Check compatibility in your phone settings.
With a native Japanese IP, you can access all Japanese online services without restrictions: restaurant reservations, train ticket purchases, local streaming services, and much more. eSIMs with foreign IPs may be blocked by some Japanese services.
Yes, absolutely! You can install your eSIM from home by scanning the QR code received after purchase. The eSIM will automatically activate when you arrive in Japan and your phone connects to the local network.
For basic usage (GPS, messaging, emails), 1 to 3 GB is enough for a week. For moderate usage including social media and some videos, go for 5 to 10 GB. For heavy users or longer stays, the 20 GB or 50 GB plans are ideal.
You can purchase a new plan directly from the Companion Mobile app at any time. Activation is instant, so you'll never be without a connection during your trip.
We accept credit cards (Visa, Mastercard, American Express) as well as Google Pay. Payment is secure and you receive your installation QR code instantly after purchase.
Yes! The Companion Mobile eSIM works alongside your main SIM card. You keep your regular number for calls and texts, while the eSIM handles your internet data in Japan.

Ready for Japan?

Download Companion Mobile and order your Japanese eSIM in seconds. Getting connected in Japan has never been easier.

Download on the App Store Get it on Google Play