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 an 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.

When can I activate my eSIM?

Please activate your eSIM in Japan since the validity period starts once your eSIM is activated regardless of your location. You will need a WiFi connection on your phone to activate an eSIM. We recommend scanning the QR code at home before you travel so you are ready to enable data as soon as you land — the plan only starts counting when you first use data in Japan.

What should I do if my 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 order?

You cannot cancel your order once you have purchased a data plan, even if you have not activated your eSIM yet. 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.

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: 4.93 (22567 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

	Recommended 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

Japan Wireless (本地)

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

全球市场

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

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。

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

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

Guest Guest

reliable and easy. better than using sim card and fast ...reliable and easy. better than using sim card and fast ...about 18 hours ago

Matty Peltzer

Very good connections in the Osaka perfecture. I never exper...Very good connections in the Osaka perfecture. I never experienced a bandwidth drop with an unlimited subscription. I visit Osaka 3-4 times a year for...1 day ago

Guest Guest

Worked great!...Easy set up and good connectivity wherever I went. Would use again!...3 days ago

Guest Guest

perfect experience in the middle of nowhere signing up and g...perfect experience in the middle of nowhere signing up and getting service...3 days ago

Norman Dannemiller

This is the second time I've used Japan Wireless, and it wor...This is the second time I've used Japan Wireless, and it worked well everywhere I went. I did have a bit of difficulty on initial setup and reached o...3 days ago

Vikram Rammohan

Second time using. No signal issues whatsoever. Would defin...Second time using. No signal issues whatsoever. Would definitely recommend....8 days ago

Marie Joy Amaro

The process of using it was easy ...The process of using it was easy ...9 days ago

Guest Guest

My japan wireless experience...I have no complaints as to its reliability. Had seamless connections allthroughout my stay...9 days ago

Guest Guest

Install and forget. It just works seamlessly....Japan Wireless was really easy to use from start to finish. Installation, setup, and getting connected were all simple and smooth, with no hassle at a...9 days ago

查看更多评论

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

	Recommended 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

Japan Wireless (本地)

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

全球市场

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

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。

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

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

Guest Guest

reliable and easy. better than using sim card and fast ...reliable and easy. better than using sim card and fast ...about 18 hours ago

Matty Peltzer

Guest Guest

Worked great!...Easy set up and good connectivity wherever I went. Would use again!...3 days ago

Guest Guest

perfect experience in the middle of nowhere signing up and g...perfect experience in the middle of nowhere signing up and getting service...3 days ago

Norman Dannemiller

Vikram Rammohan

Second time using. No signal issues whatsoever. Would defin...Second time using. No signal issues whatsoever. Would definitely recommend....8 days ago

Marie Joy Amaro

The process of using it was easy ...The process of using it was easy ...9 days ago

Guest Guest

My japan wireless experience...I have no complaints as to its reliability. Had seamless connections allthroughout my stay...9 days ago

Guest Guest