About 5 GB for a week in Japan
| Option | 7 days | |
|---|---|---|
| Three, about 5 GB for 7 days | 7 × Go Roam Around the World Extra · uses your plan's UK allowance | £56.00 |
| eSIM For U, 5 GB for 30 days | See eSIM plans | £7.09 |
| eSIM For U daily plan, 7 days | 1 GB per day | £7.99 |
Official price list of Three, checked 3 Nov 2026. Standard plans; older contracts may differ. Source Prices in different currencies, not converted.
All Three data options for Japan
| Data | Valid | Price | |
|---|---|---|---|
| Go Roam Around the World Extra | Plan data | per day | £8.00 |
In the Three price list, Go Roam Around the World Extra covers Japan and 28 other named destinations, among them Morocco, Turkey, and Thailand, all at the same Three 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 Three charge for data in Japan?
The table shows the cheapest official Three option for about 5 GB in a week, every Three data option for Japan, and the source with the date we checked it.
Is Japan included in Three plans?
Not in the standard plans of the Three price list we checked. In Japan you pay a pass, a daily charge or a price per MB.
Can I keep my Three number in Japan?
Yes. In Japan, keep the Three SIM for calls and texts and use the travel eSIM for data. Turn off data roaming on the Three line so it does not use data.
Where can I see all Three roaming charges?
On the Three roaming charges page, with every destination in the Three 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.