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Japan travel eSIM

Maps in Tokyo backstreets, train timetables, translation on menus — Japan is a destination where you use data constantly, and roaming there is famously expensive. Plans from £1.50, delivered instantly and installed before you fly.

Real SoftBank & KDDI coverage · Instant delivery · Apple Pay & Google Pay

From£1.50
NetworkSoftBank & KDDI
Plans13
Up to30 days
Plans & pricing

Japan data plans

These are the real prices charged in the app (GBP shown — the app also prices in €, $ and 12 more currencies). The app is always the live source: operator pricing can move.

Standard plans
DataValidityPrice
500 MB7 days£1.50
1 GB7 days£3.00
3 GB30 days£6.00
5 GB30 days£8.50
10 GB30 days£13.50
20 GB30 days£18.50
Unlimited plans
DataValidityPrice
Unlimited3 days£9.00
Unlimited7 days£20.00
Unlimited30 days£53.50

Unlimited fair use, shown before you buy: full speed for the first 3 GB each day, then 1 Mbps until the next day. Plans are rechargeable — top up in the app without reinstalling.

Good to know

Travel-data tips for Japan

Two networks, not one

eSIMzio’s Japan plans connect to SoftBank and KDDI with 5G where available — the app shows the real network you’re on.

Data is everything in Japan

Google Maps, Japan Transit, DeepL and Suica top-ups all need data. Budget more than you think — the 10 GB / 30 days plan is the sweet spot for a two-week trip.

Install on hotel or airport Wi-Fi before you fly

Your eSIM arrives the second you pay. Add it at home over Wi-Fi and it activates only when it first connects in Japan.

Hotspot your travel partner

One plan can hotspot a second phone or laptop — often cheaper than buying two small plans.

How it works

Online in Japan in three steps

  1. Gate 01

    Buy in the app

    Pick a Japan plan — Apple Pay, Google Pay or card. Your eSIM is delivered the instant payment succeeds.

  2. Gate 02

    Install over Wi-Fi

    One tap on most phones, or scan the QR. Do it at home — the plan only starts when it first connects abroad.

  3. Gate 03

    Land connected

    Switch the eSIM on for data when you arrive and watch your live usage in the app.

FAQ

Japan eSIM questions

How much does a Japan eSIM cost?

Japan data plans start at £1.50 for 500 MB / 7 days, up to 20 GB and unlimited options. The price you see in the app is exactly what you pay — no roaming charges on top.

Which network will I be on in Japan?

eSIMzio’s Japan plans connect to SoftBank & KDDI with 5G where available. The app shows the real operator and coverage before you buy — we never invent coverage claims.

When should I install the eSIM?

Install it before you fly, over Wi-Fi at home. Delivery is instant after payment, and the plan’s validity starts when the eSIM first connects to a network at your destination — not when you buy.

Do unlimited plans have a fair-use policy?

Yes, and we show it up front: unlimited Japan plans reduce to 1 Mbps after 3 GB of use per day, then restore at full speed the next day. You’ll see this on the plan card in the app before paying.

Can I keep my normal number for calls and WhatsApp?

Yes. The travel eSIM runs alongside your usual SIM, which stays active for calls, texts and WhatsApp — only your data routes through the eSIM.

Keep exploring

More destination guides

Final call for boarding

Japan from £1.50

Download eSIMzio, install before you fly, and land already connected.