eSIM for Japan: what actually works
A researched, up-to-date guide to mobile data in Japan. Operators, coverage, prices, and when a local SIM beats us.
Choose your eSIM Japan according to the length of your stay and your expected data use. 5 GB is generally enough for maps, messaging and social media, while video streaming and hotspot use require more data. The plans shown range from 1 to 50 GB and start at $1.90. They are fully refundable within 30 days provided the eSIM has not been used on a network at the destination. The activation link is sent by email after purchase.
Japan eSIM plans
Prices in USD. Instant QR activation. Pick your data, land connected.
Clear data. Clear price.
Drift plans show a fixed data allowance, validity period and final price before checkout.
About “unlimited” plans: Plans marketed as unlimited, including Holafly plans, may still be subject to local network Fair Usage Policies (FUP) and temporary speed reductions after heavy use. Unlimited data does not always mean unlimited full-speed data.
Buying a local SIM instead
Where to buy: Bic Camera and Yodobashi electronics stores, Don Quijote, operator shops. Note: you generally cannot buy a local eSIM at the airport in Japan, unlike many countries.
Price: Local visitor data SIMs roughly 20-45 for typical tourist packages; travel eSIMs often cheaper, from ~4 for 1GB up to ~25 for 20GB over 30 days USD
Voice prepaid is rare for tourists; data-only is the norm. Because airport eSIM purchase is limited, buying a travel eSIM before you fly is the most reliable way to land connected.
How much data for Japan
What to expect by trip type.
| Itinerary | Days | Data needed |
|---|---|---|
| Tokyo + Kyoto + Osaka (golden route) | 10 | 10GB |
| Tokyo city break | 5 | 6GB |
| Rural / Hokkaido / Shikoku trip | 10 | 8GB |
The verdict
Our eSIM wins when: Almost always for tourists. You generally cannot buy a local eSIM at the airport in Japan, so a travel eSIM bought before you fly is the cleanest way to land connected. Setup friction for a local SIM is high.
A local SIM wins when: Long stays where you need a Japanese phone number, which most tourists never do. A data-only travel eSIM covers maps, translation, transit and app-based calls.
On the competition: On price the field is tight: on 5GB and 10GB 30-day plans the big names sit within about a dollar of each other. Pick on network rather than price. If your trip goes beyond the big cities, prefer an eSIM that routes through Docomo. Holafly's unlimited only makes sense for heavy streamers.
Bottom line: Buy a data-only eSIM before you fly and check the networks shown with each plan for your route. You land connected, skip the (limited) airport options, and never need a Japanese phone number for a normal trip.
Japan eSIM FAQ
Can I buy an eSIM at the airport in Japan?
Usually not. Unlike many countries, local eSIM purchase at Japanese airports is limited, which is exactly why buying a travel eSIM before you fly is the reliable option.
Which network should my Japan eSIM use?
Docomo has the widest coverage and is best beyond the cities and on Shinkansen routes. au is strong nationwide. Available networks depend on the selected plan and are shown with each plan. SoftBank is excellent in Tokyo and Osaka. Avoid Rakuten as a visitor.
Do I need a Japanese phone number as a tourist?
No. A data-only eSIM covers maps, translation, transit apps and calls over apps like LINE. A local number only matters for long stays.
How much data do I need for Japan?
More than you think. Constant translation, maps and transit apps add up. Most travellers are comfortable with 8-10GB for a 10-day trip.
Cities & islands in Japan
Local coverage, the best network by area, and the same plans that work nationwide.
Ready to sort your Japan eSIM?
Pick the plan that fits your trip to Japan, or work out exactly how much data you need first.