Japan eSIM — Tokyo, Osaka & Nationwide Data
1GB / 7 days
$3.90
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Japan eSIM — Tokyo, Osaka & Nationwide Data
$3.90
Tokyo, Kyoto and Osaka on Japan’s main carriers — including the Shinkansen route between them.
- Networks: NTT docomo 5G, Rakuten Mobile 5G, KDDI/au 5G, SoftBank 5G
- 4G/LTE and 5G where the local network supports it
- Hotspot and tethering supported
- Validity starts on first connection in Japan, not at purchase
- Data only — no phone number, no calls, no SMS
- Install now, travel later — usable for 180 days after purchase
How the Daily Data plan works
This plan gives you 1GB of full-speed data every day, renewing roughly every 24 hours for the number of days you choose (7, 15 or 30). If you use your daily 1GB, your connection does not stop - it continues at a reduced 384 Kbps speed until the next day starts, so you are never fully cut off. Hotspot is supported, same as on our standard plans. Choose your total trip length when you buy: the number of days is fixed at purchase, and extra days cannot be added to the same eSIM later - buy a new plan if your trip runs longer than planned.
Requires an eSIM-compatible, carrier-unlocked device. Check the Device Compatibility page before buying, and see the Fair Usage Policy for how the allowance is measured.
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Delivered in minutes
QR code by email, right after payment
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180-day refund
Full refund if you never install it
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Keep your number
Your own SIM stays in the phone
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Data only
No calls or SMS — apps work as usual
Japan travel data eSIM
What is a Japan eSIM?
A Japan eSIM gives travelers a data‑only connection that works on the country’s main mobile operators, letting you stay online while exploring Tokyo’s neon streets, Kyoto’s historic temples, Osaka’s bustling markets, and beyond. It’s activated by scanning a QR code before you depart, so you’re ready to use maps, translation apps, and transport planners the moment you land.
In Japan the eSIM links to NTT docomo 5G, Rakuten Mobile 5G, KDDI/au 5G, and SoftBank 5G. Your chosen data allowance is deducted as you use apps, and the plan remains active for the specified number of days regardless of how you move between cities or regions.
Operators on this planNTT docomo 5G, Rakuten Mobile 5G, KDDI/au 5G, SoftBank 5G
No physical SIM card100% digital, delivered as a QR code
4G/LTE and 5GWhere the local network supports it
Keep your home numberData only: calls and texts stay on your own SIM
Fixed price, no surprisesPaid up front, no meter running
Local networks
Which networks you connect to in Japan
When you arrive, the eSIM connects to the networks of NTT docomo, Rakuten Mobile, KDDI/au, and SoftBank. The actual reach of service depends on the operator’s infrastructure in the area you are visiting, so you’ll have access wherever those networks are present.
NTT docomo 5GRakuten Mobile 5GKDDI/au 5GSoftBank 5G
8 plans are available for Japan, from $3.90 up to $79.90. Every plan is data only, delivered by QR code, and starts counting when you connect on arrival.
TokyoKyotoOsakaHokkaidoOne plan for all of Japan, starting on first connection.
Good to know
Staying connected in Japan: practical tips
Shinkansen travelUse mobile data to check real‑time train schedules, reserve seats, and access onboard Wi‑Fi information while speeding between Tokyo, Kyoto, and Osaka.
Japanese AlpsDownload offline maps beforehand, then use data for trail‑head information, weather updates, and translation of signage while hiking the mountain region.
Okinawa island hopRely on mobile data for ferry timetables, local ride‑share apps, and booking accommodations as you move between the main island and surrounding isles.
Four simple steps to use CometSIM
From checking your phone to landing online — the whole thing takes about two minutes, and you do most of it before you fly.
Step 1
Compatibility
Make sure your phone works with eSIM. It takes ten seconds — just dial a code and check.
Check compatibility
Step 2
Destination
Choose your country and the data plan that fits your trip. Prices are in USD, no surprises.
See all destinations
Step 3
Install your eSIM
Scan the QR code we email you. Install it at home on Wi-Fi — ready in a couple of minutes.
Setup guide
Step 4
Land & connect
Switch it on when you arrive. Your data starts on arrival, and your own number stays exactly where it is.
You’re online
Complete your trip
Add VPN
Add CometSIM VPN to your trip
Stay safe on hotel and airport Wi-Fi and reach home content. Your eSIM carries the data, the VPN protects it.
Questions people actually ask
If yours is not here, write to us — we answer within 24 hours.
Which operators does the Japan eSIM use and what does that mean for a traveller?
It works with NTT docomo, Rakuten Mobile, KDDI/au, and SoftBank. That gives you access to the major Japanese networks, so you can use local apps and services wherever those operators have infrastructure.
Does the Japan eSIM also work in a real neighbouring country of Japan?
No, it is a single‑country plan valid only within Japan. Regional plans are available for travelers who need connectivity in multiple nearby countries.
Which plan size suits a trip to Tokyo and Kyoto?
As a rough guide, the 3 GB 30‑day plan often covers moderate use of maps, translation, and transport apps for a two‑city itinerary, while heavier usage might call for the 5 GB option.
Will I lose my own phone number?
No. Your physical SIM stays in the phone and keeps your number for calls and WhatsApp. The eSIM only carries data, so both work side by side.
When does my plan start counting down?
When the eSIM first connects to a network at your destination — not when you buy it. So you can install it days before you fly without losing any time.
Is my phone compatible?
Most phones from 2018 onwards are: iPhone XS and later, Google Pixel 3 and later, Samsung Galaxy S20 and later. Your phone also has to be carrier-unlocked. Dial *#06# — if an EID appears, you have eSIM. Full list on our Device Compatibility page.
How fast will I get my QR code?
Usually within a couple of minutes of payment, by email. If it has not arrived, check spam first, then write to us and we will resend it immediately.
Can I use hotspot or tethering?
Yes, on every plan we sell. Share the connection with a laptop, a tablet or the rest of your group.
What if I change my mind?
If you have not installed the eSIM, you get a full refund within 180 days. Once a profile is activated and data has been used it cannot be refunded — the allowance is consumed from the network. Full detail in our Refund Policy.
Do you sell plans for groups?
Yes. For Umrah and Hajj groups, student trips and tour operators we deliver the QR codes as a single batch before departure, at group rates. Email us with your group size and destination.