Choose your Japan data plan
Prepaid mobile data. Install from email, with no app or account.
What your Japan eSIM includes
Find your train, translate a menu and share the trip as you go.
More networks, one eSIM
Connect to NTT docomo / Rakuten Mobile / KDDI/au / SoftBank for fast, reliable data across Japan.
Set up before you travel
Install at home, connect in Japan. Your plan starts on its first local connection, with 180 days from purchase to get started.
Install straight from your email
Open the installation link or scan the QR code in your email. No app, no account.
Check your balance and add data
See your remaining data and top up from your personal dashboard. Open it straight from your email.
Share your data by hotspot
Get your laptop, tablet or travel companion online with your phone’s hotspot.
Keep your usual number
Keep your regular SIM and messaging apps. Your travel eSIM takes care of the data.
How it works
Choose your plan
Choose your allowance and validity. Check that your phone supports eSIM and is unlocked.
Install from your email
Install using the link or QR code in your email while you have an internet connection.
Connect when you land
Select the eSIM for mobile data and enable data roaming on that eSIM. Your plan starts on its first connection in Japan.
Coverage and performance
Access to all 4 mobile operators in Japan.
- NTT docomo
- Rakuten Mobile
- KDDI/au
- SoftBank
| Your trip | What to expect |
|---|---|
| Tokyo, Kyoto and Osaka | Strong coverage for maps, train times and messaging as you explore Japan’s cities. |
| Hokkaido and the countryside | NTT docomo and au give you broad reach beyond the cities, useful for small towns, countryside routes and trips around Hokkaido. |
| Trains and mountain trips | Tunnels and remote mountain terrain can interrupt local networks, whether you use a local SIM or travel eSIM. Save tickets and walking routes before setting off. |
Network details and sources
- Opensignal Japan report, April 2026: NTT docomo leads coverage across populated areas; au leads reliability in the report’s carrier measurements.
Before you buy your Japan eSIM
Plan details, setup and using your phone during the trip.
Ask us about your tripIt’s a data-only eSIM, so a Japanese phone number and standard calls or SMS aren’t included. Use your usual messaging and calling apps over mobile data. Services that require a Japanese number for SMS verification will need a separate local-number service.
Yes. Install at home over Wi-Fi. Your plan’s days start counting when the eSIM first connects in Japan. You have 180 days from purchase to make that first connection.
You’ll have access to NTT docomo / Rakuten Mobile / KDDI/au / SoftBank, with 5G on compatible phones. Your connection speed depends on local coverage and network traffic.
Yes. One eSIM covers your Japan itinerary, from Tokyo and Kyoto to regional towns. Keep the same plan as you move between destinations, with no new installation at each stop.
Allow for maps, train searches, menu translations and keeping in touch. Add more data if you’ll stream video or share a hotspot. Our Japan data guide helps you choose an allowance for your trip.
Yes. Open your dashboard from the link in your email and choose a top-up. You’ll see the data, price and validity before buying. It goes on the same eSIM, so keep it installed.
Yes. Keep your regular SIM and use the travel eSIM for mobile data. Your messaging apps keep their existing accounts. Turn off data roaming and automatic data switching for your regular SIM; calls and texts on it use your usual carrier’s rates.
Install over Wi-Fi using the link or QR code in your email. On arrival, select the eSIM for mobile data and turn on its data roaming. Our Japan installation guide walks you through it. Need a hand? Email support@travelsimasia.com.