Asia
AsiaJapan eSIM
Landmarks · Tokyo · Osaka · Kyoto · Sapporo · Fukuoka · Nagoya · Hiroshima · Okinawa
From $2.90. Data only, no app, and your home number keeps working.
Not sure which size? Work it out
7 days at about 600 MB a day ≈ 4.2 GB. 5 GB fits, $5.90.
Same 5 GB / 30 days: $5.90 here, $11.00 at Airalo. Checked 15 Oct 2026.
Day Pass
3 GB a day at full speed, then 1 Mbps until the allowance resets. For heavy days, video calls or sharing a hotspot.
- Hotspot works; it counts toward the 3 GB.
- 1 Mbps still runs maps, messages and mail; video calls in low quality.
- Days start: first attach to a covered network. The daily 3 GB is the only cap, and it is all written here.
- Routed through Hong Kong: a few local sites and apps may treat you as abroad.
- Refund if unusedNot installed? 30 days to cancel.
- QR by emailInstall on Wi-Fi, switch on when you land.
- Secure checkoutStripe. Card, Apple Pay, Google Pay. Pay in your own currency.
- Independent reviewRead our MyBestSim review.
- Networks
- NTT docomo + Rakuten Mobile + KDDI/auYour phone picks the strongest of these on its own. No setting to change.
- Internet via
- Hong Kong; some local apps may treat you as abroad
- Top-up
- Same profileAdd more GB to this same eSIM later, from your order page. No new QR, nothing to install.
Prices checked 19 Oct 2026, in US dollars.
Japan only: 5 GB for 30 days is $5.90. Crossing borders? Asia regional covers 19 countries on one QR, Japan included: 5 GB for 30 days is $24.90.
QR mail in about a minute
Tap Add eSIM on Wi-Fi
Land, switch roaming on
eSIM, local SIM or pocket Wi-Fi in Japan?
A local SIM is often cheaper per GB. The difference is where you get it and what it asks for. Prices from each operator’s own page, read 17 Oct 2026.
| Option | What you get | Price | How you get it | ID |
|---|---|---|---|---|
| Inbox eSIM | 5 GB / 30 days | $5.90 | Online before you fly; QR by email, installs on Wi-Fi | None |
| b-mobile Visitor SIM | 5 GB for 10 days | ¥1,980 (about $12.50) plus delivery | Delivered to an airport post office or your hotel | Not stated |
| Sakura Mobile data SIM | 3 GB a day or unlimited, 4 to 93 days | From ¥3,850 (about $24.40) | Pickup at Narita, Haneda, Kansai or Fukuoka, or hotel delivery | Not stated |
| Pocket Wi-Fi: Japan Wireless pocket Wi-Fi | Unlimited data on a router you carry | From $4.70 a day | Pickup at six airports or hotel delivery, return by post | Not stated |
Before you land in Japan
Install at home on Wi-Fi, then switch the line on when you land. If you are weighing a rental router, see eSIM or pocket Wi-Fi.
- Narita has free Wi-Fi (FreeWiFi-NARITA) in every terminal: accept the terms on the portal, no setup needed. Narita Airport
- Haneda's free network is HANEDA-FREE-WIFI; it does not work inside shops and can be patchy in places. Haneda Airport
- Kansai Airport Wi-Fi is free with no sign-up (#AirportFreeWiFi-Kansai). Kansai Airport
- NTT docomo closed its 3G network on 31 March 2026, so 3G-only phones no longer connect on docomo. NTT docomo
- SoftBank's free visitor Wi-Fi asks for a mobile phone number to register, so a data-only eSIM alone may not qualify. SoftBank
- Your phone must be unlocked to use a Japanese SIM or eSIM. Japan National Tourism Organization
Read before you go: Japan and South Korea on one eSIM · Home roaming or a travel eSIM? What a week costs · Day Pass or a GB pack: which travel eSIM to buy · How much travel data do you need? Per-app numbers · Japan eSIM or pocket Wi-Fi? Prices, battery, returns
Questions
How much is the Japan eSIM?
From $2.90 in USD, and the price on this page is the price you pay. Sizes run from the 1 GB pack up; pick one in the list above.
When does the Japan plan start?
First attach to a covered network. Install on Wi-Fi before you fly. After you land, turn data roaming on for this line.
Can I hotspot in Japan?
Usually allowed. The host network can still cap it.
Which networks in Japan?
NTT docomo + Rakuten Mobile + KDDI/au. Your phone joins whichever of these is strongest where you are.
Is this 5G in Japan?
This pack runs on 3G/4G/5G. You get 5G where the local network offers it to visitors, otherwise 4G.
Do I get a phone number in Japan?
Data only · no voice · no SMS. Keep the home SIM for calls and SMS.
What APN do I use in Japan?
Automatic unless the QR mail names one
Can I use this Japan eSIM in another country?
No. This pack is Japan. A new country is a new QR. Keep this one if you return.
Can I top up the Japan plan?
Same profile, same coverage. Extra GB is a top-up, not a new QR.
How long do I have to install the Japan eSIM?
Start using within 180 days of purchase. After that an unused pack can expire. Scan on Wi-Fi before you fly.
What if I buy the wrong plan?
QR not scanned and not on the phone? Email within 30 days of issue. We cancel and refund. Installed? Buy the right country and keep this QR for later.