Japan eSIM plans

Compare Japan eSIM data plans and learn what visitors need to know: data-only plans, which network covers rural Japan, and eSIM vs an airport SIM.

Most travel eSIMs for Japan are data-only and come without a Japanese phone number. That's fine for most trips, but read the tips below if you need a local number or plan to go off the beaten path.

Data only, no Japanese number

Tourist eSIMs bought online need no Japanese address or in-person ID check, but most of them include data only. Make calls with WhatsApp, LINE or FaceTime instead.

If a booking or a Japanese app asks for a local number to send an SMS code, keep your home SIM active for texts, or ask your hotel to help.

Which network covers where you're going

Japan has three main networks: NTT Docomo, au (KDDI) and SoftBank. Docomo has the widest coverage in rural and mountain areas, while SoftBank and au are strong in cities. If you're heading to the Alps, Hokkaido or small islands, check which network a plan uses before you buy.

eSIM or a SIM card at the airport?

Local SIM cards from providers such as IIJ and OCN Mobile are sold at major international airports, typically for ¥3,000–¥5,000 (about US$20–33), and some include a voice number. Japanese carriers ask for your passport, and some use an online check with a passport photo and a selfie video.

A travel eSIM avoids the airport queue: install it at home over Wi-Fi and switch it on when you land.

How much data do you need in Japan?

Train apps and maps use more data in Japan than you might expect. Plan for about 1 GB a day; for a two-week trip a 10–20 GB plan is a safe choice.