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ESIM JAPAN · PUBLISHED PRICES COMPARED

Drimsim eSIM Review for Japan (2026)

This review covers every Drimsim plan for Japan, 10 in total, with prices checked on September 24, 2026. In our ranking for a typical trip, Drimsim comes #5.

Updated September 24, 2026Prices checked September 24, 2026

We may earn a commission if you buy through our links, at no extra cost to you. It never changes the computed ranking. Affiliate disclosure

All Drimsim plans for Japan

Score: 3.3/10 · #5/5

Networks
Not published
5G
Not stated
Hotspot
Not stated
App
Yes
Top-up
Not stated
Phone number
Not stated
Unlimited
No
PlanDataValidityPricePrice/GB
Pay as you go · 1 GB (incl. eSIM)1 GBPay as you go$23.10$23.10/GB
Pay as you go · 2 GB (incl. eSIM)2 GBPay as you go$34.78$17.39/GB
Pay as you go · 3 GB (incl. eSIM)3 GBPay as you go$46.47$15.49/GB
Pay as you go · 5 GB (incl. eSIM)5 GBPay as you go$69.84$13.97/GB
Pay as you go · 7 GB (incl. eSIM)7 GBPay as you go$93.21$13.32/GB
Pay as you go · 10 GB (incl. eSIM)10 GBPay as you go$128.26$12.83/GB
Pay as you go · 15 GB (incl. eSIM)15 GBPay as you go$186.68$12.45/GB
Pay as you go · 20 GB (incl. eSIM)20 GBPay as you go$245.11$12.26/GB
Pay as you go · 30 GB (incl. eSIM)30 GBPay as you go$361.96$12.07/GB
Pay as you go · 50 GB (incl. eSIM)50 GBPay as you go$595.65$11.91/GB
View plan — Drimsim

Alternatives to Drimsim

What matters here

Drimsim does not publish its Japanese partner network on its Japan page. Hotspot sharing is not mentioned.

Drimsim works differently from the others: instead of fixed plans it charges data by use, with prices published in euros. We convert that published rate at the European Central Bank reference rate to compare it with the others, and add the one-off eSIM price; the plans shown for Drimsim are these computed amounts.

Plans are managed in the Drimsim app.

Our score for Drimsim is computed, not given: price for the need of each page, Japanese network, hotspot and options. That is why Drimsim can rank differently on a 3-day page and on a 30-day one. The duels linked below compare it one to one with each alternative.

Guides on this site

How much data do you need?

Pick your trip length and how you use your phone. The assumptions are visible and editable.

Usage
Assumptions (MB per day)
Estimated data—Plan that covers it

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Install your eSIM in 4 steps

  1. 1

    Buy the plan before you leave and keep the QR code or the app handy.

  2. 2

    Install the eSIM at home on Wi-Fi. Most plans only start the validity period once the eSIM connects in Japan.

  3. 3

    On landing, switch the eSIM on for mobile data and keep your home SIM for calls and texts if you need them.

  4. 4

    Turn on data roaming for the eSIM line, then check that the phone shows a Japanese network.

Your phone must be carrier-unlocked and eSIM-compatible. Check this in your phone settings before you buy.

Frequently asked questions

Is Drimsim good for Japan?

Drimsim ranks #5 in our comparison for a typical trip, based on its published Japan plans from $23.10. The pros and cons above come from what it publishes.

Which network does Drimsim use in Japan?

Drimsim does not publish its Japanese partner network. Coverage is good in cities with all major Japanese networks.

Does Drimsim allow hotspot in Japan?

Drimsim does not state it on its Japan page; check the plan conditions before relying on it.

What are the alternatives to Drimsim?

The alternatives section above lists the next best providers in our ranking, and each duel page compares two providers side by side.

Can I set up the eSIM before leaving home?

Yes, and it is the easiest option: scan the QR code or use the provider’s app on Wi-Fi before departure. Most plans only start counting days when the eSIM first connects in Japan.

Do Japan travel eSIMs include a phone number?

Most travel eSIMs sold for Japan are data only. You can still call through apps such as WhatsApp or FaceTime, and keep your home SIM active for texts.