eSIM

Travel eSIM for Japan — Plans & How to Use (2026)

Go365 · 2026-06-24

A maze-like rail network, signs full of Japanese, restaurants booked through apps – travelling in Japan without data means it is easy to get lost. A Japan eSIM keeps you online from Tokyo and Osaka to Kyoto, with smooth Google Maps, Google Translate and train apps.

Why use an eSIM in Japan?

Choose a Japan eSIM by need

Go365 offers many data sizes and validity periods for Japan eSIMs. How to choose:

Prices and data change over time; see the latest on the plan page below.

Installing a Japan eSIM

Buy a plan and receive the QR code by email.
Scan the QR while still in Vietnam to install the eSIM profile.
In Japan, turn on Data Roaming for the eSIM to get online.

See details: how to install & activate an eSIM · what is an eSIM.

Data-saving tips in Japan

Buy a Japan eSIM

Choose the right plan for your trip, get the QR instantly and start your journey to the Land of the Rising Sun with a stable connection.

👉 See Japan eSIM plans at Go365 | All eSIM destinations

Câu hỏi thường gặp

Does a Japan eSIM have good coverage?

Yes. Japan eSIM plans connect to major carriers (such as NTT Docomo, SoftBank), so signal is strong in Tokyo, Osaka, Kyoto and even on the Shinkansen and in rural areas.

How many GB should I buy for Japan?

Basic use (maps, translation, social media) is fine with about 1–2GB/day. For lots of video or sharing a hotspot, choose a higher-data or unlimited plan.

Does a Japan eSIM support translation apps?

Yes. An eSIM only provides Internet, so apps like Google Translate, Google Maps and Japan Transit all work normally when you have data.

Do I need a passport to activate a Japan eSIM?

No. A travel eSIM bought through Go365 only needs a QR scan, with no paperwork like a SIM bought in Japan.

When should I activate a Japan eSIM?

Install it in Vietnam beforehand and only turn on data roaming once you arrive in Japan, so the plan starts counting from when you actually need it.