🇯🇵 eSIM
eSIM for Japan travel – anonymous, no KYC, from $3.20/GB
NTT Docomo and Softbank 5G across Honshu, Kyushu and Hokkaido.
Per GB
$3.20
No daily fees
Networks
NTT Docomo · SoftBank
4G / 5G
Hotspot
Included
Tether laptops, tablets, consoles
The simplest eSIM for Japan travel is one you install before you fly: it connects to NTT Docomo or SoftBank when you land, needs no passport or Japanese address, and costs $3.20 per GB with no expiry. Local prepaid SIMs in Japan are tied to your passport, and airport vending machines are convenient but expensive per gigabyte.
This page covers what an eSIM for Japan travel costs, which networks you get, the Shinkansen and subway, the apps that need data on arrival, ID rules, setup, and how it compares with airport SIMs and pocket Wi-Fi. The same balance also works in South Korea.
How much does an eSIM for Japan travel cost?
$3.20 per GB, billed per MB from a USD balance that never expires; a one-time $5 setup fee applies to a new eSIM.
One rate: $3.20/GB, metered per MB against a prepaid USD balance — this is how our no-KYC eSIM works, and the balance never expires. No daily passes, no expiring bundles, no throttling tiers - unused credit stays on your eSIM forever and works in the next country you visit.
| Top-up | Data in Japan | Effective rate |
|---|---|---|
| $5.00 | ≈ 1.6 GB | $3.20/GB |
| $10.00 | ≈ 3.1 GB | $3.20/GB |
| $20.00 | ≈ 6.3 GB | $3.20/GB |
| $50.00 | ≈ 15.6 GB | $3.20/GB |
A one-time $5 setup fee applies to a brand-new eSIM; top-ups to an existing eSIM carry no fee. Rates are pay-as-you-go, so light days cost cents and heavy days just draw down the balance faster.
What should you look for in an eSIM for Japan travel?
Check the networks, the price per GB, expiry, hotspot, ID requirements, onward coverage and calls.
- Networks. Look for access to NTT Docomo or SoftBank. Docomo has the broadest rural coverage; Anon eSIM uses both.
- Pricing model. Day-based bundles and pocket Wi-Fi charge for time; per-GB billing charges for what you use. Anon eSIM is $3.20/GB.
- Expiry. Many bundles expire after 7–30 days. An Anon eSIM balance never expires.
- Hotspot. Some plans limit tethering. Anon eSIM includes it at full speed.
- ID and account. Japanese SIMs record your passport, and some eSIMs need an email account. Anon eSIM needs neither.
- Onward trips. Check that South Korea and your other stops are covered on the same eSIM.
- Calls and texts. Most travel eSIMs, including Anon eSIM, are data-only. Use LINE, WhatsApp or FaceTime for calls.
What is arriving in Japan like?
Narita, Haneda and Kansai sell SIMs and pocket Wi-Fi, but they record your passport; a pre-installed eSIM is live before the Narita Express.
Narita, Haneda and Kansai all have prepaid SIM counters and vending machines (Mobal, IIJmio, SoftBank). They work, but they photograph your passport, and a 7-day 3 GB card is typically ¥3,000–4,500. Install Anon eSIM on the plane's Wi-Fi or at the airport, switch on Data Roaming for that line, and you are on Docomo before you reach the Narita Express platform. Google Maps works underground on the Tokyo Metro because the tunnels are fully covered.
How much data does a Japan trip use?
Most visitors use 400–600 MB a day, so ten days is about 4–6 GB.
Ten days Tokyo–Kyoto–Osaka: maps, Google Translate camera, train apps, photos
10 days · 4–6 GB · $ 12.80–$19.20 at $3.20/GB
Japan is data-heavy for visitors: Google Translate's camera mode, Navitime or Google Maps for trains, and a lot of photo backup. 400–600 MB a day is normal; 4–6 GB for ten days is $12.80–$19.20. Convenience-store and hotel Wi-Fi is everywhere and keeps the number down.
Which networks and speeds do you get in Japan?
NTT Docomo and SoftBank, with 5G in major cities and LTE elsewhere, including Shinkansen lines and subway tunnels.
Anon eSIM connects through roaming agreements with NTT Docomo and SoftBank, with 4G / 5G typically available to roamers. Your phone picks the strongest partner signal automatically and re-selects as you move - there is nothing to configure.
Excellent nationwide, including Shinkansen lines and subway tunnels. Remote mountain onsen towns may drop to 4G.
Docomo has the best rural and mountain coverage in Japan and is the partner you will see most; SoftBank is strong in cities. 5G is widespread in Tokyo, Osaka, Nagoya and along the Tokaido Shinkansen, with LTE elsewhere. Shinkansen tunnels and the Tokyo subway are covered. Remote onsen towns in the Japanese Alps and parts of Hokkaido drop to LTE or lose signal in valleys, on every network including Docomo's own customers.
KDDI (au) and Rakuten Mobile aren't among Anon eSIM's listed partners here, so your phone connects to Docomo or SoftBank.
The APN is provisioned automatically with the eSIM profile. You do not need to enter APN settings manually on iOS or Android - the only switch you must flip is Data Roaming: ON for the Anon eSIM line, because the service is technically a roaming profile everywhere it operates.
NTT Docomo · SoftBank
Partner networks, selected automatically
4G / 5G
Typical roaming speeds, hotspot at full speed
200+ countries, one balance
Same eSIM keeps working across borders
Does it work on the Shinkansen and Tokyo subway?
Yes. Docomo and SoftBank cover the main Shinkansen lines and Tokyo's subway, with brief drops in some tunnels.
On the Tokaido Shinkansen between Tokyo and Osaka, independent testing in 2024 found coverage available for most of the route on every major network, with SoftBank showing the most consistent quality. Expect short gaps in longer tunnels.
Tokyo Metro and Toei subway stations and tunnels are covered, so Google Maps transit directions keep working underground.
How do you set up your Japan eSIM?
Before you buy, check that your phone supports eSIM and isn't locked to a carrier on our compatible devices page. For a full walkthrough, see how to use an eSIM for international travel.
- 1
Buy credit
Pick an amount ($5 minimum) and pay by card, Apple Pay / Google Pay, or crypto (BTC, Lightning, USDT). No account, no email, no ID.
- 2
Install the eSIM
Scan the QR code from another screen, or tap “Install on this iPhone” for a one-tap LPA install. Works on iOS 12.1+ and Android 10+ with eSIM support.
- 3
Turn on Data Roaming
Enable Data Roaming for the Anon eSIM line only. Your primary SIM's settings are untouched. APN configures itself - no manual settings.
- 4
Land in Japan and connect
Your phone attaches to NTT Docomo (or SoftBank) within a minute of leaving airplane mode.
- 5
Top up whenever
Balance running low? Add credit from the account page in under a minute. Same eSIM, same ICCID, no new QR - and no setup fee ever again.
Do you need a passport for an eSIM in Japan?
Not for a roaming eSIM: Japan's ID rules apply to contracts with Japanese providers, and Anon eSIM is issued abroad.
Japan's Mobile Voice Communications Act requires identity verification for any local SIM with a phone number, and in practice data-only prepaid products also record your passport. Tourist SIMs are legal but always registered. A roaming eSIM is treated exactly like a visitor's home SIM: Docomo or SoftBank see a foreign operator's subscriber, and the point-of-sale rules never engage.
In March 2026, Japan's cabinet approved extending ID checks to data-only SIM contracts too, which will make local data SIMs harder to buy anonymously. Anon eSIM is an anonymous eSIM issued abroad: no passport, no account and no ID at checkout. Your payment provider and the networks you connect to still see their own data, such as payment details and your device's identifiers.
On arrival: Narita (NRT), Haneda (HND) and Kansai (KIX) have prepaid vending machines - convenient but slow and priced high per GB. An installed eSIM attaches to Docomo on the Narita Express.
Typical speeds: 50-180 Mbps on 4G; 300-600 Mbps on 5G in Tokyo, Osaka, Kyoto. Prices from the live rates data: $3.20/GB, metered per MB against a prepaid USD balance.
Registration status
Passport required for local SIMs
Anon eSIM sidesteps this entirely - the eSIM is issued from an ID-free jurisdiction and you use it as a visitor's roaming SIM in Japan. No local paperwork.
How does Anon eSIM compare with a Japanese SIM, pocket Wi-Fi or a bundle eSIM?
Airport SIMs and pocket Wi-Fi need your passport and charge by the day or package; Anon eSIM is per-GB, needs no ID and never expires.
| Option | Typical price | ID check | Data expiry | South Korea |
|---|---|---|---|---|
| Anon eSIM | $3.20/GB ($16 for 5 GB) | None | Never | Same eSIM; $2.80/GB |
| Airport prepaid SIM | ¥3,000–4,500 for about 3 GB / 7 days* | Passport | 7–30 days | No |
| Pocket Wi-Fi rental | ¥440–2,200 per day* | Rental booking | Daily rental | Usually Japan only |
| Bundle eSIM (e.g. Airalo) | About $11.50 for 5 GB / 30 days* | Email account | 30 days | Varies by plan |
*Pocket Wi-Fi prices as listed in August 2026; SIM and bundle prices checked September 2026. Check current prices before you buy.
Pocket Wi-Fi suits groups sharing one connection, but it's another device to charge, carry and return. For solo travellers and couples, an eSIM with hotspot does the same job without the pickup and drop-off.
Compare providers on price, expiry and KYC in the no-KYC eSIM comparison.
Which apps need data when you land in Japan?
Visit Japan Web, Suica in Apple Wallet, Google Maps and a translation app are the ones most visitors use in the first hour.
Visit Japan Web gives you a QR code for immigration and customs. It isn't mandatory, but save a screenshot in case airport signal is busy. Suica in Apple Wallet works on foreign iPhones; Express Mode lets you tap through ticket gates without a connection, but topping up needs data.
Google Maps handles train routes well, and a camera translation app helps with menus and signs. Download offline maps and language packs on hotel Wi-Fi to stretch your balance, and see how much data a trip really uses.
Travel profiles for Japan
Trip-specific breakdowns of what to expect, how much data, and what it costs.
Popular cities in Japan
eSIM for Japan travel FAQ
Does Anon eSIM work on the Shinkansen and the Tokyo subway?
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Yes. Docomo and SoftBank cover the Tokaido, Tohoku and Sanyo Shinkansen lines including tunnels, and the Tokyo Metro and Toei subway networks are fully covered. Expect LTE in tunnels and 5G in stations and above ground in cities.
Do I need a Japanese phone number for anything?
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Rarely as a tourist. Restaurant booking apps like Tabelog sometimes ask for one; most visitors book through their hotel or use Google Maps reservations. Anon eSIM is data-only, so use WhatsApp, LINE or Signal for calls.
Is it faster to buy a SIM at Narita?
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It is fast but registered: the counter photographs your passport, and the vending machines still tie the SIM to your details on activation. Installing the eSIM takes a minute and needs no paperwork.
Does hotspot work in Japan?
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Yes. Hotspot is included at full speed with any Anon eSIM for Japan travel, so tethering a laptop on the Shinkansen works fine.
What about South Korea on the same trip?
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Same eSIM: it attaches to KT or SK Telecom in Korea at $2.80/GB. Korea also requires passport registration for local SIMs, so the same logic applies.
The bottom line
The easiest eSIM for Japan travel is one you install at home: no passport, $3.20/GB on Docomo or SoftBank, and a balance that carries over to your next trip.
Heading on to Seoul? The same balance works in South Korea at $2.80/GB, and the rates page covers the rest of the world.
Other asia destinations
Works the moment you land
Phone connects to a local network in Japan automatically.
Installed in 60 seconds
QR or one-tap install. APN configures itself.
One eSIM for the whole region
Cross borders and the same eSIM picks the local network.