Docomo native 4G Japan eSIM ｜Support ChatGPT｜1-180 Days
- Japan Docomo 4G native network, no need to enable data roaming
- This eSIM is operated by DHA Corporation
- Provide Chinese, English and Japanese customer service after-sales service
- ChatGPT can be used, hotspot sharing can be done, Japanese IP is safe and reliable
Package Options
Product Info
The content of this product is provided by machine translation and may not reflect the actual information, please take this into consideration before booking.
- Precautions for installing eSIM
- Each QR code can only be scanned and installed once. Once bound, it cannot be changed to another device or deleted. Once scanned and installed, returns and refunds are not possible. We apologize for the inconvenience.
- It is recommended to scan for and install the eSIM after connecting to the free Wi-Fi at the airport upon arrival in Japan. Do not install the eSIM while traveling, as network interruptions may cause the installation to fail.
- Installing this eSIM outside of Japan may display messages such as "Activating", "Please contact your provider" or "Activation failed". Please do not delete the eSIM (it will not be reissued if deleted). You can connect to the Internet after arriving in Japan and activating the eSIM.
- If hotspot sharing is not working properly, please enter the APN information in the three fields: "Mobile Data" > "LTE Settings" > "Personal Hotspot": m-air.jp
- [Docomo Japan Signal Upgrade Announcement] Starting April 1, 2026, 3G signal service has been completely shut down and replaced entirely by 4G/LTE, resulting in a more stable connection. If you encounter connection problems after arriving in Japan, simply restart your phone or toggle airplane mode on and off to re-establish a signal.
- Precautions for using eSIM
- After eSIM is installed, it usually automatically recognizes the APN. If it does not automatically recognize the APN, please complete the setup as follows.
iOS: Settings > Mobile Network > (If using eSIM, select the eSIM plan) > Turn off data roaming for this plan and select Mobile Data Network > Enter the following information in the three fields: [Mobile Data], [LTE Settings], and [Personal Hotspot]:
APN: m-air.jp
*Please note: Username and password fields must be left blank.
Android: Settings > Network & Internet > Internet > Gear icon for this SIM card > Scroll to the bottom and select "Access Point Names"
Click the "+" sign or "Add" button in the upper right corner and set it as follows:
Name: Nippon SIM
APN: m-air.jp
Verification method: CHAP - This eSIM is a native Japanese resource; please do not enable data roaming.
- Days are calculated in calendar days. The first day is considered to be from the time the eSIM is installed and activated until 23:59 (Japan local time) on the same day.
- Why choose Nippon SIM?
Nippon SIM is a Japanese network card brand launched by DHA CORPORATION, a Japanese telecommunications company. It uses the docomo network, Japan's largest telecommunications company, to provide affordable, convenient, and stable high-quality internet service. NTT docomo has the most users in Japan and the most comprehensive signal coverage, ensuring signal strength no matter where you are in Japan (similar to Chunghwa Telecom in Taiwan). We have customer service teams in Japan with Chinese, English, Japanese, and Taiwanese language support to provide you with the most timely and reliable service. (Telecommunications company registration number A-30-16419)
Please confirm that your device is compatible with eSIM before purchasing
If hotspot sharing does not work properly, please fill in the APN information in the three fields of "Mobile Data" > "LTE Settings" > "Personal Hotspot": m-air.jp
eSIM one-click installation (iPhone only)
eSIM installation instructions (When installing outside of Japan, messages such as "Activating", "Please contact the provider", or "Activation failed" may appear. Please do not delete the eSIM. Once you arrive in Japan, you can turn on the eSIM and connect to the Internet)
SIM Card Specifications
| Data Usage Specifications | Unlimited data, 1GB, 2GB, 3GB, 30GB, 50GB |
| Transmission Specifications | 4G |
| Signal Coverage Area | Japan |
| Mobile Carrier | Docomo |
| Supported Sizes | eSIM |
| Hotspot Sharing | Available |
| Supported Frequencies(4G) | B1（2100 MHz）, B3（1800 MHz）, B19（800 MHz）, B28（700 APT）, B42（TD 3500 MHz） |
| Top-Up Availability | Top-up unavailable |
| Excludes | Voice calls, Texts |
| Not Supported | SIM-locked device, Carrier-customized device, Mobile hotspot, modified phones, translation machines, devices without eSIM function |
| Reminders | ・Daily High-Speed Data Plan: After using the high-speed data plan, the speed will be reduced to 128kbps, with no total limit, and the high-speed data will be refreshed at 0:00 (local time in Japan) every day. ・30-day total plan: After the high-speed data is used up, you can surf the Internet at a maximum speed of 128kbps until the 30th day. ・All are Japanese native resources and can be used normally in ChatGPT. ・If hotspot sharing does not work properly, please fill in the APN information in the three fields of "Mobile Data" > "LTE Settings" > "Personal Hotspot": m-air.jp |
| Network Type | Local |
Purchase Notice
- Before purchasing, please ensure that your mobile phone and its operating system support eSIM functionality. Orders cancelled due to device incompatibility are non-refundable.
- iOS needs to be updated to the latest version; please note that iPhones sold in mainland China do not support eSIM. In Hong Kong and Macau, only the iPhone 13 mini, iPhone 12 mini, iPhone SE 2020, 2022, and iPhone XS have eSIM functionality. (Please check the Apple website for details.)
- Samsung phones vary by country. Samsung phones purchased in Taiwan do not support eSIM. For other regions, please check with the Samsung website first.
- We provide customer service in Chinese, Taiwanese, English, and Japanese.
- [Docomo Japan Signal Upgrade Announcement] Starting April 1, 2026, 3G signal service has been completely shut down and replaced entirely by 4G/LTE, resulting in a more stable connection. If you encounter connection problems after arriving in Japan, simply restart your phone or toggle airplane mode on and off to re-establish a signal.
Reminders
Before purchasing, please make sure that your phone and its operating system support the eSIM function. No refund will be given if the order is cancelled due to device incompatibility.
The latest version of iOS is required; Please note that iPhones sold in mainland China do not support eSIM. In Hong Kong and Macau, only iPhone 13 mini, iPhone 12 mini, iPhone SE 2020, 2022, and iPhone XS have eSIM capabilities.
Samsung phones vary in different countries. Samsung phones purchased in Taiwan do not support eSIM. Please confirm with Samsung's official website for other regions first.
An internet connection is required to install the eSIM. Please make sure there is WiFi or mobile data available before installation.
It is recommended that you scan and install the eSIM after connecting to the free wifi at the airport upon arrival in Japan. Do not install the eSIM while in a vehicle to avoid network interruption and failure of eSIM installation.
This eSIM is a local prepaid card in Japan. If you install it outside of Japan, you may see messages such as "Activation in Progress", "Please Contact the Supplier", or "Activation Failed". Please do not delete the eSIM (it will not be reissued after deletion). After arriving in Japan, activate the eSIM and you can connect to the Internet.
Each QR code can only be scanned and installed once. Once bound, the device cannot be changed or deleted. Once scanned and installed, returns and refunds are not possible. Please understand.
Please remember to turn off data roaming on the original SIM card to avoid using the mobile network of the original SIM card and incurring high roaming charges.
When you finish using the eSIM plan in your phone, click [Remove Action Plan] at the bottom to remove it.
Please be aware that the quality of Internet access may be affected by factors such as location, terrain, building shielding, number of users and weather.
All Nippon SIM SIM/eSIM are Japanese IP native cards and can use ChatGPT normally.
[Docomo Japan Signal Upgrade Announcement] Starting April 1, 2026, 3G signals have been completely shut down. Service is now entirely carried by 4G/LTE, providing a more stable connection. If you encounter connection problems after arriving in Japan, simply restart your phone or toggle airplane mode on and off to regain a signal.
How to Use
- Installation Steps
- Settings > Mobile Network > Add eSIM > Scan the QR code to install eSIM
- Turn off other SIM cards and turn on mobile data communication for this eSIM (no need to turn on roaming)
- The APN of the eSIM is usually automatically identified. If it cannot be automatically identified, you need to set it manually:
Settings > Mobile Network > Mobile Data Network APN: m-air.jp (leave username and password blank) - After the eSIM is installed, the APN will usually be automatically identified. If it cannot be automatically identified, please complete the setting as follows
iOS: Settings > Cellular > (If it is an eSIM, please select the eSIM plan) > Turn off data roaming for the plan and select Cellular Data > Fill in the following information in the [Cellular Data], [LTE Settings], and [Personal Hotspot] fields:
APN: m-air.jp
*Please note: Username and password must be left blank
Android: Settings > Network & Internet > Internet > SIM card gear > Scroll to the bottom and find [Access Point Name]
Click the [+] sign or [Add] in the upper right corner and set as follows:
Name: Nippon SIM
APN: m-air.jp
Authentication method: CHAP
Keep the other fields as default or leave them blank, then click [⋮] in the upper right corner and [Save] to turn off SIM card roaming.
If the above settings cannot successfully connect, please switch the authentication method to PAP, CHAP, PAP or CHAP in sequence and try to connect.
- Note:
- An internet connection is required to install the eSIM. Please make sure there is WiFi available or mobile data available in the environment before installation (you can use airport WiFi to connect to the internet)
- Each QR code can only be scanned and installed once. Once bound, the device cannot be changed or deleted. Once scanned and installed, returns and refunds are not possible. Please understand.
- It is recommended that you scan and install the eSIM after connecting to the free wifi at the airport upon arrival in Japan. Do not install the eSIM while in a vehicle to avoid network interruption and failure of eSIM installation.
- This eSIM is a local prepaid card in Japan. If you install it outside of Japan, it may show "activation in progress" or "activation failed". Please do not delete the eSIM for this reason (it will not be reissued after deletion). It may also cause the validity period to start early, resulting in not being able to fully cover your itinerary. Please be aware.
- If you encounter any problems, please contact customer service staff. We provide customer service in Chinese, Taiwanese, English, and Japanese.
Cancellation Policy
- Once the order has been completed, it cannot be canceled, modified, or refunded
- Due to time zone differences, the confirmed cancellation date is based on the supplier’s local time. Please allow 2–5 business days to process your cancellation request, after which the cancellation fee will be charged according to the product’s cancellation policy. Once the cancellation is confirmed, you will receive your refund within 14 working days.
FAQ
The Docomo native 4G eSIM utilizes Japan's Docomo 4G native network, ensuring reliable signal coverage and high-speed internet quality throughout Japan. This provides a stable connection for various online activities, including streaming, navigation, and general browsing, making it suitable for travel across different regions.
Yes, the Docomo eSIM is designed for use by foreigners traveling to Japan. It allows seamless activation without needing local registration, providing immediate connectivity upon arrival. Users can easily set up the eSIM on compatible devices to access the internet.
The Docomo native 4G eSIM is a suitable choice for travelers due to its direct connection to Japan's Docomo 4G native network, which provides stable and widespread coverage. It eliminates the need for physical SIM cards, supports convenient features like hotspot sharing and ChatGPT access, and offers customer service in multiple languages, enhancing the overall travel experience.
No, when using the Docomo native 4G Japan eSIM, you do not need to enable data roaming. This eSIM operates directly on Japan's local Docomo network, functioning as a local data plan. This simplifies usage and avoids potential roaming charges often associated with international travel.
The Docomo native 4G Japan eSIM generally offers a more cost-effective solution compared to traditional international roaming. It provides dedicated local network access without the fluctuating costs often associated with roaming, giving travelers predictable and usually lower data expenses for their trip to Japan.
The Docomo native 4G Japan eSIM offers several key features for connectivity. It provides access to Japan's Docomo 4G native network, supports hotspot sharing to connect multiple devices, and allows the use of applications like ChatGPT. It also ensures a Japanese IP address, which can be beneficial for accessing local services securely.
For users of the Docomo native 4G Japan eSIM, comprehensive customer service is available in Chinese, English, and Japanese. This multilingual support ensures that travelers can receive assistance promptly and effectively, addressing any questions or technical issues they might encounter during their use of the eSIM in Japan.
The Docomo native 4G Japan eSIM operates by utilizing Japan's robust Docomo 4G native network infrastructure. This ensures direct access to one of the country's leading mobile networks, providing high-quality and reliable connectivity across various locations in Japan, and is managed by DHA Corporation.
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