7 Visit Japan Web QR Code Mistakes (What I Wish I Knew)
The Visit Japan Web QR code is generated in your browser, so it needs data at the gate. Here is how to have it ready before you land in Japan, and what a Japan eSIM costs.
Quick answer: If you are a first-time visitor filling in immigration and customs on the plane, the Visit Japan Web QR code only loads with a working connection, so install a Japan eSIM before you fly and keep your home SIM for SMS. Japan plans start from about US$0.30 a day, and since April 1 2026 every Japan SIM and eSIM purchase needs a passport or residence card ID, per Sakura Mobile's 2026 guide.
Key takeaways
- The QR code is a web page. Visit Japan Web generates your immigration and customs QR codes in the browser, so you need data at the gate, not just a screenshot from home.
- Buy and install before you fly. Install the eSIM on home Wi-Fi, keep your home SIM active for bank SMS, and switch the travel line on after landing.
- ID is now required. Since April 1 2026 every Japan SIM and eSIM purchase needs a passport or residence card ID, including data-only plans, per Sakura Mobile's 2026 guide.
- Size for the whole trip. Japan eSIM plans cannot be topped up, so match the data size to your trip length before you buy.
You are filling in the Visit Japan Web questionnaire on the plane, the crew has asked for devices to be stowed, and the QR code has not generated yet because the aircraft Wi-Fi dropped your session. You land at Narita or Kansai, join the immigration queue, and the officer asks for the code you were supposed to show at the gate.
Do I need a working connection to show the Visit Japan Web QR code at immigration?
Yes, if you left the QR code to the last minute. Visit Japan Web issues separate QR codes for immigration and customs, and they are generated in a browser session, not stored offline. If you only registered on the plane and the cabin Wi-Fi cut out, you land at Narita or Haneda with a blank screen and a queue behind you.
The fix is not a kiosk. Finish the Visit Japan Web registration at home on hotel or home Wi-Fi, screenshot both QR codes into your photo album, and only then pack. A screenshot survives airplane mode, a dead battery swap and a customs hall with no signal. The live QR code is the backup, not the primary.
Which Japanese network does the eSIM land on, and what does the plan allow at its cap?
Japan runs three physical networks: NTT Docomo, KDDI (au) and SoftBank. Tourist eSIMs ride one or more of them as a roaming partner, so the carrier name on your phone is not the brand you bought from. The comparison checked on 6 October 2026 lists Airalo on SoftBank and KDDI with 5G, Holafly on the same pair, Sakura Mobile on au/KDDI for unlimited and Docomo for its 3 GB per day plan, and eSIM Go on Docomo and SoftBank (Japan Travel Kit, checked 6 October 2026).
One structural limit to plan around: tourist eSIM plans are sold as a closed bucket. Size for the whole trip at purchase, because you cannot top up the same eSIM mid-trip. If your dates are still moving, buy the longer validity window rather than a second plan.
How much data does a Japan arrival actually use in the first 48 hours?
For a 7 to 10 day trip at that pace, 5 GB is the floor and 10 GB gives headroom for hotspotting a laptop or a second device. A family of four sharing one hotspot should double it. The plan table below describes each size by its data allowance and its number of days, and the shop page carries the current price.
Where does coverage actually fail in Japan, and does that matter for the QR code?
Cities and the Tokaido corridor are not the problem. Tokyo, Osaka, Kyoto, Nagoya and Fukuoka hold 4G and 5G on all three networks, and the Shinkansen route between them is covered for most of its length. The gaps are rural and vertical: mountain routes in the Japan Alps, the Kiso Valley, parts of Hokkaido outside Sapporo, and island hops such as the Yaeyama group far southwest of Tokyo, where The Real Japan's guide notes Docomo-based providers are the safer pick for countryside travel.
None of that touches the QR code, because the code is generated before you fly. The failure mode is the opposite one: a traveller who assumes airport Wi-Fi will cover it. Free Wi-Fi in Japanese stations and cafes often needs registration, has time limits, or drops the connection when you need it most (The Real Japan, 2026 buyers guide).
What does a Japan tourist SIM cost at the airport, and when does it beat the eSIM?
| Option | Data and validity | Source and date |
|---|---|---|
| Airalo Japan eSIM | 1 GB / 3 days | Japan Travel Kit, 6 Oct 2026 |
| Airalo Japan eSIM | 5 GB / 30 days | Japan Travel Kit, 6 Oct 2026 |
| Holafly Japan eSIM | Unlimited / 7 days | Japan Travel Kit, 6 Oct 2026 |
| Sakura Mobile eSIM | 9 GB / 3 days | Japan Travel Kit, 6 Oct 2026 |
| IIJmio Travel SIM | 3 GB / 7 GB / 15 GB, 15 or 30 days | Thisis-Japan, 2026 |
| B-Mobile Visitor SIM | 3 GB / 21 days | Thisis-Japan, 2026 |
Airport counters sell the same data in person, with a queue and a passport check, and the shop page carries the current price for each plan. An eSIM bought before you fly skips the counter and the return, and one plan covers one phone.
Frequently asked questions
Does the Visit Japan Web QR code work without internet?
No. The QR codes are generated and displayed in your browser, so you need a working connection to open them at the immigration and customs gate. A screenshot taken at home can help, but a live connection is safer if the page needs to reload.
Can I get a Japan eSIM without a passport?
No. Since April 1 2026 every Japan SIM and eSIM purchase needs a passport or residence card ID, including data-only tourist plans, per Sakura Mobile's 2026 guide.
How much data does a Japan trip need?
A light week of maps, messaging and ride apps uses about 1 GB a day. Add video calls or hotspot use and plan for 2 to 3 GB a day. Size the plan for the whole trip, because Japan eSIM plans cannot be topped up.
Is a Japan eSIM cheaper than airport Wi-Fi rental?
Airport pocket Wi-Fi counters rent routers by the day, per thisis-japan.com's 2026 comparison. An eSIM avoids the queue and the return, and one plan covers one phone. The shop page carries the current price for each plan.
Which network does a Japan eSIM use?
Most tourist eSIMs roam on Japanese networks such as NTT Docomo, SoftBank or KDDI. The catalogue block attached to this post lists the exact carrier and networks for the plan you are buying.
Get your Japan eSIM before you fly
Install it on home Wi-Fi, keep your home SIM for SMS, and open Visit Japan Web at the gate with data already working. New users get eSIM credit automatically in the app eSIM tab, valid 12 months, in-app purchases only.
Terms and conditions
- Information only. This post is information only, not an offer or sale, and not advice. Prices and rules change, so check the operator or government page before you buy.
- For readers in the United States. This is information only, not an offer or sale, and not advice. Fizen is not offered to US Persons.
- Data only. Japan eSIM plans are data-only. They do not give you a Japanese phone number, and they cannot be topped up, so size the plan for the whole trip.
- ID required. Since April 1 2026 every Japan SIM and eSIM purchase needs a passport or residence card ID, including data-only plans, per Sakura Mobile's 2026 guide.
Sources
- Sakura Mobile, Best Travel SIM Cards for Japan 2026
- thisis-japan.com, Japan SIM Card for Tourists 2026
- Japan Travel Kit, Best Japan SIM Cards 2026
- The Real Japan, Best SIM Card Japan 2026
- Japan National Tourism Organization, Travel Japan
- Wikipedia, Japan
Facts checked on 07 October 2026.
