The best eSIM for Japan, without the roaming bill
Land in Tokyo or Osaka already online. Compare verified Japan eSIM data plans, see live prices on NTT Docomo, SoftBank and au coverage, and add a promo code to pay even less.
- Docomo · SoftBank · au
- No SIM swap, no deposit
- Verified codes
Compare eSIM plans for Japan
Live prices and data allowances for Japan, side by side. Pick a plan, then check the promo codes page to see if a coupon brings it down further.
No SIM swap, no counter
Install before you fly and skip the airport SIM desk, the pocket Wi-Fi rental deposit and the passport a local plan can ask for.
Real Japanese networks
Travel eSIMs ride NTT Docomo, SoftBank and au, so you get genuine local 4G and 5G across Tokyo, the Shinkansen and the regions.
Cheaper than roaming
A prepaid Japan eSIM costs a fraction of home-carrier roaming, and a promo code trims the price further still.
Staying connected across Japan
Japan rewards travellers who stay online: reading the Tokyo metro maps, buying a Shinkansen seat in an app, scanning a QR menu in Osaka and translating a kanji sign all run on data. A travel eSIM gives you that from the moment you land, on the same networks locals use, across a fast-moving multi-city trip.
- NTT Docomo: the widest 4G and 5G footprint, strong everywhere from Tokyo to rural towns
- SoftBank: excellent urban speeds across the major cities and tourist routes
- au by KDDI: a solid alternative with broad national reach along the Shinkansen lines
Online in Japan in 3 steps
Setting up takes a couple of minutes on Wi-Fi before you leave home, so you arrive connected with nothing to buy or register at the airport.
- 1
Compare & pick
Use the comparison to choose a Japan plan that matches your stay and data needs, then apply a promo code.
- 2
Buy & install
Pay online and scan the QR code on home Wi-Fi to install the eSIM days before departure.
- 3
Land connected
Switch on the data line when you reach Narita, Haneda or Kansai airport and you are online instantly on a local Japanese network.
Japan travel & connectivity guides
Practical guides to stay connected while you travel, pick the right eSIM and pay less for your mobile data, step by step.
Japan eSIM FAQ
- Which is the best eSIM for Japan?
- It depends on how long you stay and how much data you use. For a classic Tokyo, Kyoto and Osaka trip a few gigabytes covers maps, train apps and messaging, while a longer tour or heavy hotspot use is simpler on an unlimited plan. Compare the price per GB and the local network above, then add a promo code before you buy.
- Will an eSIM work across Japan?
- Yes. Travel eSIMs ride Japan's main networks (NTT Docomo, SoftBank and au by KDDI), which blanket the cities, the Shinkansen routes and the main tourist regions with fast 4G and 5G. Coverage stays strong from Tokyo and Osaka out to Mt Fuji, Hiroshima and rural castle towns alike.
- Do I need ID to use an eSIM in Japan?
- No. Renting a pocket Wi-Fi or buying a local SIM at the airport can mean a counter, a deposit and your passport, but a travel eSIM is bought online before you arrive and activates instantly by QR code, with no paperwork and no queue after a long flight into Narita or Haneda.