About 5 GB for a week in Japan
| Option | 7 days | |
|---|---|---|
| Optus, about 5 GB for 7 days | 7 × Optus Daily Roaming | A$35.00 |
| eSIM For U, 5 GB for 30 days | See eSIM plans | A$13.49 |
| eSIM For U daily plan, 7 days | 1 GB per day | A$15.29 |
Official price list of Optus, checked 3 Nov 2026. Standard plans; older contracts may differ. Source Prices in different currencies, not converted.
All Optus data options for Japan
| Data | Valid | Price | |
|---|---|---|---|
| Optus Daily Roaming | 5 GB | per day | A$5.00 |
| Optus Roaming Pass | 1 GB | 1 day | A$10.00 |
In the Optus price list, Zone 1 covers Japan and 70 other named destinations, among them Indonesia, Vietnam, and Thailand, all at the same Optus prices. Our eSIM prices are live.
Good to know before you travel to Japan
- Free Wi‑Fi is common in stations, convenience stores and cafés, but it usually needs a sign-up. Good as a backup, not as your main connection.
- Google Maps shows train and subway connections with fares, which makes the rail network in Tokyo and Osaka much easier to use.
eSIM plans for Japan
- Networks for JapanKDDI/au, NTT docomo, Rakuten Mobile and SoftBank
- SpeedUp to 5G on all four networks. Where there is no 5G, you connect over 4G/LTE.
- Internet runs viaSingaporeDepending on the plan. Banking or streaming apps may treat you as being there.
Questions and answers
How much does Optus charge for data in Japan?
The table shows the cheapest official Optus option for about 5 GB in a week, every Optus data option for Japan, and the source with the date we checked it.
Is Japan included in Optus plans?
Not in the standard plans of the Optus price list we checked. In Japan you pay a pass, a daily charge or a price per MB.
Can I keep my Optus number in Japan?
Yes. In Japan, keep the Optus SIM for calls and texts and use the travel eSIM for data. Turn off data roaming on the Optus line so it does not use data.
Where can I see all Optus roaming charges?
On the Optus roaming charges page, with every destination in the Optus price list.
Updated 3 Nov 2026 · checked against our live catalogue
How we check our data · Prices and plans come live from our catalogue; facts come from official sources, listed where we use them.