What is an eSIM for Japan travel?

An eSIM (embedded SIM) is a digital SIM card built into your smartphone that lets you activate a Japan mobile data plan without inserting a physical card. Japan Wireless eSIM connects directly to NTT Docomo and au KDDI networks, giving you 5G/4G data from the moment you land at Narita, Haneda, or Kansai airports. Plans range from 1-day to 30-day options starting at $2/day, delivered instantly as a QR code to your email — no store visit or mail delivery required.

How do I activate a Japan eSIM?

After purchasing your Japan Wireless eSIM, check your email for a QR code (usually arrives within 2 minutes). On your phone, go to Settings > Cellular > Add eSIM and scan the QR code while connected to WiFi. Follow the on-screen prompts to install the plan. Activate the eSIM after landing in Japan — the validity period starts immediately upon activation, so it is best to wait until you arrive. Full setup guides for iPhone and Android are available at japan-wireless.com/esim/setup-esim-iphone-android-guide.

Does Japan Wireless eSIM work on 5G?

Yes. Japan Wireless eSIM provides unlimited 5G data through direct partnerships with NTT Docomo and au KDDI — Japan's two largest carriers, covering over 99% of the country including Tokyo, Osaka, Kyoto, and rural areas. There are no artificial speed caps or throttling after a data threshold. Both 5G and 4G LTE are included in all plans, so your connection automatically uses the strongest available signal. Japan Wireless is the only Japan-based eSIM provider with direct network agreements with both carriers.

What should I do if my eSIM QR code is not working?

eSIM QR codes can only be scanned once. If scanning fails, check your activation status in the My eSIM section under Purchased. If the eSIM shows as not yet activated, use the manual installation option: go to Settings > Cellular > Add eSIM > Enter Details Manually and input the SM-DP+ address and activation code shown in your order email. Full manual setup guides for iOS and Android are at japan-wireless.com/esim/setup-esim-iphone-android-guide. If you still have trouble, Japan Wireless offers 7-day English phone and email support from Japan.

Can I cancel my Japan eSIM order?

Japan Wireless eSIM orders cannot be cancelled once a data plan has been purchased, even if the eSIM has not yet been activated. This is standard policy for digital eSIM products. However, if your eSIM fails to activate or does not work as expected, Japan Wireless offers a backup guarantee: a free Pocket WiFi device will be provided as a replacement. This Plan B guarantee ensures you are never left without connectivity in Japan, which is a commitment that most global eSIM resellers do not offer.

Coverage in Japan

Unlimited Japan eSIM

Name: Japan Wireless Unlimited eSIM
Brand: Japan Wireless
SKU: JW-ESIM-UNLIMITED
Availability: InStock
Rating: 4.92 (1384 reviews)

5G Speed. Local Support. No Hassles

Truly Unlimited High-Speed
Powered by Japan's top networks
Japan-based English support, 7 days a week

Get My Japan eSIM

Unlimited Japan eSIM

5G Speed. Local Support. No Hassles

Plans from $2/day · Instant QR delivery

Truly Unlimited High-Speed

Japan-based English support, 7 days a week

Get My Japan eSIM

Japan Wireless eSIM — Unlimited 5G connectivity for Japan travelers

Truly Unlimited

High speed internet

99% Coverage

Japan's Top Network

1.6M+

Travelers Served Since 2012

Find your eSIM

Affiliates Terms and Conditions Terms for membership Privacy policy Legal notation About us FAQ Compare eSIMs Contact us

Coverage in Japan

Unlimited Japan eSIM

5G Speed. Local Support. No Hassles

Truly Unlimited High-Speed
Powered by Japan's top networks
Japan-based English support, 7 days a week

Get My Japan eSIM

Unlimited Japan eSIM

5G Speed. Local Support. No Hassles

Plans from $2/day · Instant QR delivery

Truly Unlimited High-Speed

Japan-based English support, 7 days a week

Get My Japan eSIM

Truly Unlimited

High speed internet

99% Coverage

Japan's Top Network

1.6M+

Travelers Served Since 2012

Why a Japan-based eSIM wins

Local vs Global providers

	Japan Wireless (Local)	Global Marketplaces
Network access	Direct on Japan's top 5G/4G networks; local IP for maps & apps	Often routed via other countries which can cause lag and limit access to Japanese apps
Support	English support from Japan, 7 days/week	Offshore/chat only; time-zone lag is common
Unlimited clarity	Transparent. either no daily throttle or clearly stated daily high-speed bucket	Unlimited often hides daily caps or throttles in fine print
Backup option	Free Pocket WiFi if eSIM fails	Usually no on-the-ground fallback
Track record	1.6M+ travelers served in Japan	Global scale, less Japan specialization

Why Japan Wireless Beats Global eSIM Providers

We've got your back, every day of your trip

A Worry-Free Arrival

Instant QR delivery, clear setup, top Japan networks. Get only the best for your once in a lifetime trip.

Our Network Advantage

We don't just resell a generic global plan. We partner directly with au KDDI and NTT Docomo, some of Japan's top networks You get a direct local connection. Unlike other providers that route your connection through servers in other countries (causing lag and blocking some apps), our eSIM connects you directly to the Japanese network. This means: • Maximum 5G speeds • Low latency for maps and streaming • Full access to Japanese sites and apps

Real help, real humans

English support from Japan, 7 days/week by chat, email and phone

Get Help From Local Experts

Our entire customer support team is based right here in Japan. When you have a problem, you're talking to a real person who understands the local networks—not an offshore call center. We're available 7 days a week. Choose your support channel: • Live Chat (For instant help with setup & troubleshooting) • Email (For receipts, refunds, or other inquiries) • Local Phone Support (We offer a Japanese phone number for support, a service our global competitors can't provide)

Plan B on us

If your eSIM can't connect for whatever reasons after guided checks, we'll provide a Pocket Wifi for FREE.

Japan eSIM Plans: 1-Day to 30-Day Options

See all plans

How does eSIM work?

Check compatibility

First, make sure your smartphone is compatible with our Japan esim.

Get your eSIM

Select the Japan eSIM data plan that suits your needs and purchase it. Your Japan eSIM QR Code will display immediately after. You'll also receive it in the email.

Find your eSIM

Install your eSIM

Simply scan your QR code and install your Japan eSIM. All the instructions will be sent to you by email. You are now ready to browse the web with the best eSIM in Japan!

Install and activate your eSIM

Japan-based support at every step

STEP 1

Before purchase

Device checks, plan advice

STEP 2

During setup

Step by step guides; we'll stay with you until it connects

View Setup Guide

STEP 3

On your trip

Data/roaming tips, APN tweaks, coverage and data usage checks in real time

Chat now

STEP 4

After

Receipts, refunds or credits if plans changes

Contact Support

What our customers say

Real Travelers in Japan. Verified reviews

Jon M Young

Excellent First Time Experience...While in Japan, one day we realized that we would not have internet connection. We have never used eSim before, but we needed something to get us thro...2 days ago

Brian Murashige

Great Service!!...Super easy to use and works well. Will continue to use Japan Wireless eSIM, since there are no issues and it always works!! Thank you for such a gre...6 days ago

Oumaima Berrahha

Best deal...Got 1days unlimited and it was so good! Used it all the time...8 days ago

Ilkka Telinen

JW's eSIM...Worked just as expected....10 days ago

Royce Ang

Fast and reliable network connection...Fast and reliable network connection...10 days ago

Laine Tanaka

Great service around japan...Great service around japan...13 days ago

Branden Asato

Excellent Esim service and quality ...I've been using Japan Wireless WiFi device for all of my trips to Japan. Finally decided to try out their Esim service so I wouldn't have to carry aro...16 days ago

Vikki R Powell

E Sim...Had a bit of trouble connecting and to be honest thr phone help line wasn't much help, but once we did it worked well. Will certainly use again on our...16 days ago

Ana Alberati

Just a perfect solution!...100% recommendations!...16 days ago

See all reviews

FAQ

Japan nationwide coverage

Stay connected in Japan with our eSIM. You can keep your carrier SIM in place and roam freely with your Dual SIM device.

Order Now - QR Code in 2 Minutes

Also Need Pocket WiFi or SIM Card for Japan?

Why a Japan-based eSIM wins

Local vs Global providers

	Japan Wireless (Local)	Global Marketplaces
Network access	Direct on Japan's top 5G/4G networks; local IP for maps & apps	Often routed via other countries which can cause lag and limit access to Japanese apps
Support	English support from Japan, 7 days/week	Offshore/chat only; time-zone lag is common
Unlimited clarity	Transparent. either no daily throttle or clearly stated daily high-speed bucket	Unlimited often hides daily caps or throttles in fine print
Backup option	Free Pocket WiFi if eSIM fails	Usually no on-the-ground fallback
Track record	1.6M+ travelers served in Japan	Global scale, less Japan specialization

Why Japan Wireless Beats Global eSIM Providers

We've got your back, every day of your trip

A Worry-Free Arrival

Instant QR delivery, clear setup, top Japan networks. Get only the best for your once in a lifetime trip.

Our Network Advantage

Real help, real humans

English support from Japan, 7 days/week by chat, email and phone

Get Help From Local Experts

Plan B on us

If your eSIM can't connect for whatever reasons after guided checks, we'll provide a Pocket Wifi for FREE.

Japan eSIM Plans: 1-Day to 30-Day Options

See all plans

How does eSIM work?

Check compatibility

First, make sure your smartphone is compatible with our Japan esim.

Get your eSIM

Select the Japan eSIM data plan that suits your needs and purchase it. Your Japan eSIM QR Code will display immediately after. You'll also receive it in the email.

Find your eSIM

Install your eSIM

Simply scan your QR code and install your Japan eSIM. All the instructions will be sent to you by email. You are now ready to browse the web with the best eSIM in Japan!

Install and activate your eSIM

Japan-based support at every step

STEP 1

Before purchase

Device checks, plan advice

STEP 2

During setup

Step by step guides; we'll stay with you until it connects

View Setup Guide

STEP 3

On your trip

Data/roaming tips, APN tweaks, coverage and data usage checks in real time

Chat now

STEP 4

After

Receipts, refunds or credits if plans changes

Contact Support

What our customers say

Real Travelers in Japan. Verified reviews

Jon M Young

Excellent First Time Experience...While in Japan, one day we realized that we would not have internet connection. We have never used eSim before, but we needed something to get us thro...2 days ago

Brian Murashige

Great Service!!...Super easy to use and works well. Will continue to use Japan Wireless eSIM, since there are no issues and it always works!! Thank you for such a gre...6 days ago

Oumaima Berrahha

Best deal...Got 1days unlimited and it was so good! Used it all the time...8 days ago

Ilkka Telinen

JW's eSIM...Worked just as expected....10 days ago

Royce Ang

Fast and reliable network connection...Fast and reliable network connection...10 days ago

Laine Tanaka

Great service around japan...Great service around japan...13 days ago

Branden Asato

Vikki R Powell

E Sim...Had a bit of trouble connecting and to be honest thr phone help line wasn't much help, but once we did it worked well. Will certainly use again on our...16 days ago

Ana Alberati

Just a perfect solution!...100% recommendations!...16 days ago

See all reviews