Mobile Companion eSIM
Japan eSIM: 5G travel data
Free · Designed for iPad. Not verified for macOS.
Your Japan eSIM at a low price: no subscription, no hidden fees. Install it at home in 1 minute and it connects by itself as soon as you land.
Your Japan eSIM at a low price, ready before you fly.
Choose your data, pay in the app and install your eSIM at home in 1 minute: you’re online as soon as you land. No subscription, no hidden fees, no SIM card to hunt for at the airport.
THE RIGHT PRICE
• Plans in every size: a few GB for Maps and messaging, much more for video
• Your plan starts at your first connection in Japan, not when you buy it: buy early, you won’t lose a day
• Need more data? Top up the same eSIM in the app
• Our prices next to the big eSIM brands, checked and dated: mobile-companion.com/en/compare
A CONNECTION THAT WORKS
• NTT docomo’s 5G network, with a Japanese IP address: unlike your usual plan abroad, your data doesn’t detour through your home country
• It connects by itself as soon as you switch off airplane mode
• Your usual SIM stays in place for calls and texts
• Share your connection with your other devices
• A real person replies on WhatsApp, 24/7, in English or French
EVERYTHING IN THE APP
• Checks that your phone is compatible before you buy
• Your remaining data and validity at a glance, also in a widget
• An alert when you’ve used half your data, then when you’re running low
• Pay by card or Apple Pay, sign in with email, Google or Apple
• The same account as on mobile-companion.com
HOW IT WORKS
1. Choose your Japan plan
2. Pay securely
3. Install your eSIM at home, over Wi-Fi
4. Land: it connects by itself
A question before or during your trip? Message us on WhatsApp from the app, any time.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes.
The developer, Japan Companion LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Financial Info
- Contact Info
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- JAPAN COMPANION LIMITED LIABILITY COMPANY
- Size
- 65.2 MB
- Category
- Travel
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and French
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 Japan Companion Limited
