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At a glance
Networks
SoftBank & KDDI
SoftBank & KDDI
Coverage
5G in metro areas, 4G nationwide
5G in metro areas, 4G nationwide
Tethering
Allowed
Allowed
Activation
QR scan → land → done
QR scan → land → done
Plans
| Data | Days | From |
|---|---|---|
| 1 GB | 7 days | A$3.90 |
| 3 GB | 15 days | A$7.50 |
| 5 GB | 30 days | A$11.90 |
| 10 GB | 30 days | A$18.50 |
| 20 GB | 30 days | A$29.00 |
| Unlimited | 7 days | A$22.00 |
Prices indicative. See live pricing in the shop.
Which plan is right for you?
Weekend in Tokyo
Maps, photos, the occasional reel — 1 to 3 GB is plenty.
Maps, photos, the occasional reel — 1 to 3 GB is plenty.
Try: 3 GB, 15 days.
Two weeks across Japan
Tokyo, Kyoto, Osaka, plus translation apps and rail planners.
Tokyo, Kyoto, Osaka, plus translation apps and rail planners.
Try: 10 GB, 30 days.
Working remote / streaming
Video calls, big uploads, hotspot for the laptop.
Video calls, big uploads, hotspot for the laptop.
Try: 20 GB or Unlimited.
Using data in Japan
Japan’s mobile networks are some of the best on Earth. Tokyo, Osaka, Kyoto, Yokohama, Fukuoka and Nagoya have 5G across almost everything; intercity Shinkansen routes hold 4G the entire way. Even rural parts of Hokkaido and Kyushu still get a usable signal.
Nothing is geo-blocked the way it is in some neighbouring countries. Google Maps, WhatsApp, iMessage, YouTube, Instagram, banking apps and 2FA codes all work normally. You don’t need a VPN.
One quirk: many Japanese cafés and trains do offer free Wi-Fi, but it’s slow and often requires a clunky registration. Your SimKit eSIM will almost always be faster than the local Wi-Fi.
Questions, answered.
Does it work everywhere in Japan?
Yes. Coverage runs nationwide on SoftBank and KDDI — the same towers your home carrier would roam onto, but at a fraction of the price.
When does my data start?
The first time your phone connects to a Japanese network after you land. Not when you install it, and not when you board the plane.
Can I tether my laptop?
Yes — hotspot/tethering is fully allowed on Japan plans. Useful for hotel work mornings.
Will I get a Japanese phone number?
No — SimKit plans are data-only. You keep your usual number active on your home SIM for calls and texts, including any 2FA codes from back home.
What if I run out of data?
You can buy a top-up from your account at any time. The new data stacks on top of what you already had — no need to remove or reinstall the eSIM.