Feb 2026
Worked perfectly in Japan
Connected the moment I landed at Narita. No hunting for a SIM card, no queues. Signal was strong even in rural areas. Will use Wanderly for every trip from now on.
Wanderly traveller Verified purchase
Free eSIM in Japan — free data for first-time users, claimed in the Wanderly app.
How many days?
Choose your validity to narrow the plans.
7-day plans6 options
Choose your package
Start with a travel style or fine-tune the sliders.
10 GB
7 days
Total plan price
$7.99USD
Price per GB
$0.80
10 GB7 daysVaries by network
- Coverage
- Single country
- Plan type
- Data only
- Top-up
- Unavailable — buy another plan
- Activation
- On network connection
Data-only eSIM
Validity starts at the first network connection.
Top-ups unavailable. Usage tracking supported. Hotspot supported.
Calls and SMS are not included. Internet calling apps use your data.
Coverage (1 country)
Japan
Refund eligibility depends on the plan and its activation status. Contact Wanderly support before installing or using the eSIM.
What's Included
Instant email delivery
QR code activation
24/7 customer support
No hidden fees
Data, calls and texts depend on plan
Requires an unlocked, eSIM-compatible phone
Easy installation guide
Plan-specific refund policy
Traveller reviews for Japan
1 verified reviewJapan eSIM plans at a glance
Wanderly lists 31 fixed-data Japan plans, ranging from 1GB up to 50GB over 3 to 180 days. Prices start at $2.99, and the lowest cost per gigabyte is $0.44/GB on the 50GB 3-day plan.
Unlimited day-passes are also available from $2.99 per day, billed per day rather than per gigabyte. 13 of the 36 Japan plans can be topped up without reinstalling the eSIM.
Calls and SMS depend on the selected plan. Install using the supplied QR code and keep your home number on its own line. Activation timing varies by plan; check your selected plan's terms before purchasing or installing.
How much does a Japan eSIM cost?
A Japan eSIM from Wanderly costs $2.99 for 1GB (7 days), $4.99 for 5GB (3 days) and $11.99 for 20GB (7 days), as a one-off price with no subscription. Larger plans cost less per gigabyte: $2.99/GB at 1GB against $0.60/GB at 20GB.
Across its data-only plans, Japan works out at a median of $0.80 per GB, below the $1.40 median across the 182 countries in the Wanderly eSIM Price Index. 17 of them have a lower median.
| Data | Validity | Price | Per GB |
|---|---|---|---|
| 1GB | 7 days | $2.99 | $2.99 |
| 3GB | 15 days | $3.99 | $1.33 |
| 5GB | 3 days | $4.99 | $1.00 |
| 10GB | 3 days | $6.99 | $0.70 |
| 20GB | 7 days | $11.99 | $0.60 |
Cheapest current data-only plan at each size, as charged at checkout. Prices follow the live catalogue. Compare Japan with every country in the eSIM Price Index.
Choose a Japan eSIM for your itinerary
Tokyo, Kyoto and Osaka itinerary
Start with a fixed-data allowance sized for navigation, tickets, translation and messaging. Use your phone's recent data usage as a guide; video uploads and streaming can change your budget substantially.
Rural stays or mountain routes
Check the network and coverage information for the exact plan. Country coverage does not guarantee service in remote valleys, tunnels or on every train route. Save your route and accommodation details offline.
Japan plus another Asian destination
Compare separate country plans with a regional bundle that explicitly includes every stop. Check its activation rule too: connecting during a covered stopover can start a first-connection plan before you reach Japan.
Open the current plan's details before buying: check validity, activation timing, coverage, hotspot rules and any fair-use limits. Calls and texts are included only when stated for that plan.
🇯🇵 About eSIMs in Japan
For a Tokyo, Kyoto and Osaka itinerary, compare the current Japan plans by total price, data allowance and validity. Plan for navigation, translation, tickets and messaging, using your own recent data usage as a guide. Frequent video uploads, streaming or laptop tethering may need a larger allowance, but first check hotspot permissions and any daily high-speed or fair-use limits.
The exact plan determines its supported networks. Country coverage does not guarantee continuous signal on every Shinkansen route, in tunnels, mountain valleys or rural locations. Review the network details for your route and save tickets, accommodation information and maps offline before remote journeys.
Check activation before purchasing or installing: validity may start at issuance after purchase, installation or first supported connection, and some plans must be installed at the destination. A regional bundle may connect during a covered stopover, so confirm both its country list and start rule. Keep data roaming off on your home line to avoid home-carrier charges.
How to activate your eSIM in Japan
- 1Match the plan to your routeCompare allowance, validity, supported networks and total price. Confirm your phone is eSIM-compatible and carrier-unlocked, and check any hotspot or fair-use limits.
- 2Check when to buy and installFollow the selected plan’s activation rule. Validity can start at issuance after purchase, installation or first supported connection; some plans require destination installation. Use reliable Wi-Fi at the time and location specified.
- 3Set your mobile-data lineWhen ready, choose the Japan eSIM for mobile data and enable data roaming for that line as instructed. Keep data roaming off on your home SIM and review your home carrier’s call and text charges.
- 4Save your onward journeyTest data before continuing your journey and save train tickets, accommodation details and maps offline. Connections can be interrupted in tunnels and remote areas.
Japan eSIM FAQ
Which network does my Japan eSIM use?
The supported network depends on the exact plan. Check its current network and coverage details before buying rather than assuming all Japan plans use one carrier.
Will data work on the Shinkansen?
Service depends on the supported network, route and local conditions. Interruptions can occur in tunnels and remote sections, so save tickets and route details offline.
Will it work in rural Japan?
Check the plan’s network information for your itinerary. A supported country does not guarantee service in every rural valley, mountain area or building.
When should I install my Japan eSIM?
Follow the selected plan’s start rule and installation instructions. Validity may begin at issuance after purchase, installation or first supported connection; some plans must be installed at the destination.
Can I use hotspot or make calls?
Hotspot permissions, calls and SMS depend on the selected plan. Check its stated allowances and any daily high-speed or fair-use limits; data-only service does not automatically include a phone number.
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