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.

日本覆盖范围

无限日本eSIM

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

5G速度。本地支持。无忧无虑

真正无限高速
由日本顶级网络提供支持
日本英语支持,每周7天

购买您的eSIM

无限日本eSIM

5G速度。本地支持。无忧无虑

Plans from $2/day · Instant QR delivery

真正无限高速

由日本顶级网络提供支持

日本英语支持,每周7天

购买您的eSIM

Japan Wireless eSIM — Unlimited 5G connectivity for Japan travelers

真正无限

高速网络

99%覆盖率

日本顶级网络

1.6M+

自2012年以来为无数旅客提供服务

立即购买

Affiliates 条款和条件会员条款隐私政策法律规范关于我们常见问题 Compare eSIMs 联系我们

日本覆盖范围

无限日本eSIM

5G速度。本地支持。无忧无虑

真正无限高速
由日本顶级网络提供支持
日本英语支持,每周7天

购买您的eSIM

无限日本eSIM

5G速度。本地支持。无忧无虑

Plans from $2/day · Instant QR delivery

真正无限高速

由日本顶级网络提供支持

日本英语支持,每周7天

购买您的eSIM

真正无限

高速网络

99%覆盖率

日本顶级网络

1.6M+

自2012年以来为无数旅客提供服务

为什么选择日本eSIM

本地与全球供应商

	Japan Wireless (本地)	全球市场
网络访问	直接使用日本顶级5G/4G网络；用于地图和应用程序的本地IP	通常会经过其他国家路由，这可能会导致延迟并限制对日本应用程序的访问
支持	日本提供每周7天的英语支持	仅限离岸/聊天；时区延迟很常见
无限清晰	透明。没有每日节流或明确说明的每日高速流量	“无限”通常在细则中隐藏每日流量上限或节流
备用选项	如果eSIM失败，可免费使用袖珍WiFi	通常没有现场后备方案
往绩记录	为超过160万名日本旅客提供服务	全球规模，较少日本专业化

您在日本的旅游伙伴

在您旅程的每一天，我们都会支持您

无忧抵达

即时QR交付，清晰的设置，顶级的日本网络。为您一生一次的旅行提供最好的服务。

我们的网络优势

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

真正的帮助，真正的人

通过聊天、电子邮件和电话每周7天在日本提供英语支持

向当地专家寻求协助

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)

B计划由我们承担

如果您的eSIM在引导检查后因任何原因无法连接，我们将免费提供一个袖珍WiFi。

选择最适合您的 eSIM 计划

See all plans

三步即可开通eSIM！

检查设备兼容性

请确保您的智能手机兼容eSIM功能

购买eSIM

选择符合您需求的eSIM流量套餐并完成购买。下单后您将立即收到eSIM的二维码。

立即购买

安装您的日本 eSIM

简单扫描您的QR码并安装您的eSIM。所有说明都将通过电子邮件发送给您。立刻在日本使用 eSIM 浏览网络！

安装并激活您的eSIM

每一步都有来自日本的支持

STEP 1

购买前

设备检查，方案建议

STEP 2

设置期间

逐步指南；我们将全程陪伴您直到连线成功

查看设置指南

STEP 3

旅途中

数据/漫游提示，APN调整，即时覆盖范围和数据使用情况检查

立即聊天

STEP 4

之后

如果计划变更，可提供收据、退款或积分

联系支持人员

我们的客户怎么说

日本真实旅客。已验证评论

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...5 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...9 days ago

Oumaima Berrahha

Best deal...Got 1days unlimited and it was so good! Used it all the time...11 days ago

Ilkka Telinen

JW's eSIM...Worked just as expected....13 days ago

Royce Ang

Fast and reliable network connection...Fast and reliable network connection...13 days ago

Laine Tanaka

Great service around japan...Great service around japan...16 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...19 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...19 days ago

Ana Alberati

Just a perfect solution!...100% recommendations!...19 days ago

See all reviews

常见问题（FAQ）

覆盖日本全境

使用我们的 eSIM 在日本随时享受网络服务。您可以保留原本的运营商 SIM 卡，并在您的设备上轻松双卡切换，自由漫游。

立即下单 - 2分钟获取二维码

我们的集团服务

为什么选择日本eSIM

本地与全球供应商

	Japan Wireless (本地)	全球市场
网络访问	直接使用日本顶级5G/4G网络；用于地图和应用程序的本地IP	通常会经过其他国家路由，这可能会导致延迟并限制对日本应用程序的访问
支持	日本提供每周7天的英语支持	仅限离岸/聊天；时区延迟很常见
无限清晰	透明。没有每日节流或明确说明的每日高速流量	“无限”通常在细则中隐藏每日流量上限或节流
备用选项	如果eSIM失败，可免费使用袖珍WiFi	通常没有现场后备方案
往绩记录	为超过160万名日本旅客提供服务	全球规模，较少日本专业化

您在日本的旅游伙伴

在您旅程的每一天，我们都会支持您

无忧抵达

即时QR交付，清晰的设置，顶级的日本网络。为您一生一次的旅行提供最好的服务。

我们的网络优势

真正的帮助，真正的人

通过聊天、电子邮件和电话每周7天在日本提供英语支持

向当地专家寻求协助

B计划由我们承担

如果您的eSIM在引导检查后因任何原因无法连接，我们将免费提供一个袖珍WiFi。

选择最适合您的 eSIM 计划

See all plans

三步即可开通eSIM！

检查设备兼容性

请确保您的智能手机兼容eSIM功能

购买eSIM

选择符合您需求的eSIM流量套餐并完成购买。下单后您将立即收到eSIM的二维码。

立即购买

安装您的日本 eSIM

简单扫描您的QR码并安装您的eSIM。所有说明都将通过电子邮件发送给您。立刻在日本使用 eSIM 浏览网络！

安装并激活您的eSIM

每一步都有来自日本的支持

STEP 1

购买前

设备检查，方案建议

STEP 2

设置期间

逐步指南；我们将全程陪伴您直到连线成功

查看设置指南

STEP 3

旅途中

数据/漫游提示，APN调整，即时覆盖范围和数据使用情况检查

立即聊天

STEP 4

之后

如果计划变更，可提供收据、退款或积分

联系支持人员

我们的客户怎么说

日本真实旅客。已验证评论

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...5 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...9 days ago

Oumaima Berrahha

Best deal...Got 1days unlimited and it was so good! Used it all the time...11 days ago

Ilkka Telinen

JW's eSIM...Worked just as expected....13 days ago

Royce Ang

Fast and reliable network connection...Fast and reliable network connection...13 days ago

Laine Tanaka

Great service around japan...Great service around japan...16 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...19 days ago

Ana Alberati

Just a perfect solution!...100% recommendations!...19 days ago

See all reviews