Japan eSIM – mobile data in Japan from €3.79
In Japan the map, the train times and a translator are in use all day. An eSIM puts data on your phone from the airport, with no pocket wifi to pick up.
Japan eSIM plans and prices
Plan details
- Networks: NTT docomo (5G)
- Validity starts when the eSIM connects to a network at your destination.
- Install the eSIM within 180 days of purchase.
- You can buy more data for the same eSIM if you need it.
- Data only. For calls and messages you can use your own SIM card or apps.
Is the data enough?
Choose trip length and usage to get a rough suggestion.
Estimate: about 5.6 GB
Suggestion: 10 GB · 30 days · €18.99
The estimate is based on average use. Video and hotspot use data quickly.
VAT included. One-off payment, no automatic renewal. By buying you accept the terms and ask for immediate delivery, so your right of withdrawal ends once the eSIM has been delivered.
- First check if your phone supports eSIM
- Help with any problems: [email protected]
Keeping connected in Japan
In Japan the plan uses three major networks: SoftBank, KDDI/au and NTT docomo. Coverage in cities, along rail lines and at tourist sights is excellent, including Tokyo, Osaka and Kyoto. In the mountains, on remote islands and in long tunnels the connection can still drop.
There is a lot to use data for. Google Maps shows train connections with timetables, and a translation app helps in restaurants and with signs that are not in English. Many locals message on LINE, which you may need for accommodation and excursions.
A pocket wifi unit has to be collected, charged and returned, and you have to carry it around. A local SIM card can come from a machine or a shop, but it means more errands and a card swap. An eSIM is installed at home beforehand, and your own SIM stays in the phone alongside it. Before you leave, save your accommodation addresses in Japanese too, so a taxi driver or station staff can find the place from your screen if the signal dips.
Get started in three steps
Choose a destination and plan
You see the price, validity and data amount right away.
Install the eSIM
You get a QR code and clear instructions. Your phone needs an internet connection during installation.
Turn on data when you arrive
Select the eSIM for mobile data when you reach your destination, and turn off data roaming on your own plan.
Good to know: Japan
- Power sockets
- Socket type: A, B. A European C/F plug does not fit, so bring a travel adapter. Most phone and laptop chargers work on Japan's voltage.
- Voltage
- 100 V, 50/60 Hz
- Calling code
- +81
- Your own mobile plan
- EU roaming rules do not apply in Japan, and data on your own plan can be expensive. With an eSIM you know the price in advance.
Read more: travel adapters, calling codes and roaming.
FAQ: Japan
Is an eSIM or a pocket wifi better in Japan?
An eSIM is more convenient because it lives in your phone and needs no collecting, charging or returning. A pocket wifi suits you if you must connect several devices, but it means carrying a separate unit.
Does an eSIM work on the Shinkansen and the metro in Japan?
For the most part yes, though in long tunnels the connection may drop briefly. In the metro and at stations coverage is generally good.
What can I use this eSIM for?
The plan is meant for mobile internet on your trip, for example maps, messages and browsing.
Will my own number still work?
Yes. Your own number and SIM card stay active for calls and messages. Choose the Reissaa eSIM for mobile data.
When should I buy the plan?
Buy and install the eSIM before you leave, while you have a stable internet connection.
Will my own mobile plan work in Japan?
EU roaming rules do not apply in Japan, and data on your own plan can be expensive. With an eSIM you know the price in advance.
Do I need a travel adapter for Japan?
Yes. The sockets in Japan are type A, B, and a European C/F plug does not fit. Voltage is 100 V.
What is the calling code for Japan?
The calling code for Japan is +81. To call your home country from abroad, dial its country code and leave out the leading zero of the number.
