Transit apps that never stall
A Tokyo day can involve five or six transfers. Google Maps, Japan Transit Planner and Norikae Annai all need live data — and eSIMs run on the local towers, which cover the subway and the shinkansen line.
Japan eSIM
Online the moment you land
Skip the pocket Wi-Fi counter at Narita and the SIM vending machine at Kansai. Scan one QR code before you fly and your phone connects to a docomo or SoftBank-grade network as soon as you switch off airplane mode — maps, train times and restaurant bookings included.
- ✅ Nationwide 4G / 5G
- ✅ Unlimited daily data
- ✅ Hotspot sharing
- ✅ Keep your home number
4G / 5GJapanese networks
1–90Days available
UnlimitedData per day
24/7Live support
Why an eSIM in Japan
Japan runs on your phone — so your phone needs data
Long travel days, dense transit networks and constant timetable checking. How well your connection holds up shapes the whole trip.
No airport queue
Rental Wi-Fi counters at Narita, Haneda, Kansai, Chubu and New Chitose can run twenty minutes deep in high season. With an eSIM you walk straight to the train.
Bookings and QR menus
Reservations increasingly happen through websites or LINE, restaurants hand you a QR code instead of a menu, and popular spots issue numbered tickets online. All of it needs a connection.
Home number stays live
The eSIM only carries data. Your usual SIM keeps receiving bank verification codes, card alerts and calls from home.
Coverage beyond the cities
Plans use nationwide carriers, so Hokkaido ski resorts, Shirakawa-go, the Fuji Five Lakes and rural onsen towns are inside the coverage area too.
One plan, whole family
Unlimited plans support personal hotspot, so a family of four can share a single eSIM rather than buying one each.
Choosing days
How many days do you need?
Days run in 24-hour blocks from activation. Count your arrival and departure days both.
| Trip | Typical length | Suggested eSIM | Notes |
|---|---|---|---|
| Tokyo long weekend | Fri–Sun | 3 days | A red-eye arrival still counts as a full day. |
| Osaka, Kyoto & Nara | 5 days | 5 days | Dense movement in Kansai; heavy map use. |
| Tokyo plus Hakone or Karuizawa | 6 days | 6 days | Day trips need reliable rural signal. |
| Hokkaido road trip | 7–8 days | 8 days | Self-drive routes depend entirely on navigation. |
| Kyushu or Shikoku | 9–10 days | 10 days | Rural stretches — choose nationwide coverage. |
| Long stay or working holiday | 1–3 months | 30 / 60 / 90 days | Longer plans cost noticeably less per day. |
Setup
Installing your Japan eSIM
Done at home in five minutes. Nothing to configure after you land.
Choose Japan and your days
Confirm the plan is unlimited per day and allows hotspot sharing.
Pay online
Card or PayPal. The eSIM QR code is emailed to you straight away.
Scan on Wi-Fi
iPhone: Settings → Cellular → Add eSIM → Use QR Code. Android: Settings → Network & internet → SIMs → Add eSIM.
Land and enable roaming
Turn off airplane mode, set mobile data to the Japan eSIM, and switch data roaming on for that line.
Important: install on Wi-Fi before you leave — the process needs a connection. Do not delete the profile once installed, as QR codes are usually single-use. And turn data roaming off on your home line so your own carrier does not bill you.
Practical notes for Japan
Which Japanese network will I be on?
Japan has four main carriers: NTT docomo, SoftBank, KDDI (au) and Rakuten Mobile. Travel eSIMs typically roam onto docomo or SoftBank, which have the strongest nationwide footprint, including subway tunnels and shinkansen corridors. If your itinerary includes mountains, islands or the rural north-east, prefer a plan that names docomo or SoftBank explicitly.
Airport Wi-Fi is not a substitute
Narita, Haneda, Kansai, Chubu and New Chitose all offer free Wi-Fi, but it usually requires registration, is time-limited, and gets congested in arrivals. With an eSIM you can order a car, confirm your hotel and check the Limousine Bus timetable while still at baggage claim.
Can I make phone calls?
Travel eSIMs are data-only and do not include a Japanese number, so you cannot ring a restaurant to book. Use LINE voice calls, online reservation systems, or ask your hotel front desk. If local dialling is essential to your trip, you will need a plan that includes voice service.
Small things that help
- Keep your phone on silent on trains and buses — it is standard etiquette in Japan.
- Download offline maps in Google Maps as a backup for tunnels and remote valleys.
- Install Japanese travel apps before you fly: a transit planner, Google Translate with the Japanese pack, and Tabelog.
- Save your accommodation address in Japanese — it is far easier to show a driver than to pronounce.
Flying to Japan soon?
Pick your days, pay, scan. You will be online at Narita, Haneda or Kansai before you reach the train platform.
Get your Japan eSIM →
FAQ
Japan eSIM questions
Should I install the eSIM at home or after arriving in Japan?
Install at home on Wi-Fi. The process needs an internet connection, so doing it after landing means hunting for airport Wi-Fi first. Installing does not start the clock — most plans begin counting days when you actually connect to a Japanese network.
Does a Japan eSIM use docomo or SoftBank?
It depends on the plan. Mainstream travel eSIMs roam onto docomo or SoftBank, both of which cover the whole country including subways, shinkansen routes and major sightseeing areas. The provider's plan page states which network is used.
Can I tether and share with travel companions?
Most unlimited Japan plans support personal hotspot, so one purchase can cover a couple or a family. Some budget plans block tethering, so confirm before buying.
Will I have signal on the shinkansen and the subway?
Yes. Major shinkansen corridors and the Tokyo and Osaka subway networks have full tower coverage, and your eSIM uses the same local signal Japanese phones do. Long tunnels can cause brief drops that recover automatically.
Is the data really unlimited, or will I be throttled?
Choose a plan with unlimited data per day and there is no fixed cap. Providers reserve the right to manage extreme usage — continuous all-day downloading, for example — but ordinary travel use like navigation, social media, streaming and video calls is unaffected.
Does it still work on my departure day?
Yes, as long as your plan length covers that day. Flying out on a Friday and returning the following Wednesday means you need six days, not five.
Which phones work with a Japan eSIM?
iPhone XR / XS and newer, Samsung Galaxy S20 and newer, Google Pixel 3 and newer, and most mid-to-high-end Android phones from 2020 onwards. Check Settings → General → About for an EID entry, and make sure the phone is carrier-unlocked.
Get Japan sorted before you fly
No rental counter, no deposit, no queue. Scan once and land connected.
Get your Japan eSIM →