Unlimited data for peace of mind during short stays. High-speed 5G prepaid SIM powered by NTT docomo, available across Japan
Choose from 5-day or 8-day unlimited plans. With no need to worry about data usage, it is ideal not only for travel and business trips, but also for slightly longer stays. Enjoy up to 3GB of high-speed data per day, with continued low-speed access after that. Powered by the reliable NTT docomo network with high-speed 5G/4G connectivity, it delivers stable coverage from city centers to popular sightseeing spots. No contracts or administrative fees are required, offering a simple and convenient internet solution for short- to mid-term stays.
【Product Overview】
■ Available Region Japan
■ Network Local (Non-Roaming)
■ Data Package Unlimited (Up to 3GB per day high speed | Low speed up to 128kbps)
■ Usage Period 5 Days / 8 Days (Please select)
■ Plan Type Data Only
■ Phone/SMS Function Unavailable
※Voice and video calls via apps (such as LINE, WhatsApp, etc.) are supported.
■ Connection 5G / 4G / LTE
■ Carrier M-AIR / NTT docomo
■ Tethering Available
■ Top-up Unavailable
■ Activation Not Required
※Automatically activates once connected to the supported carrier network.
■ Compatible Devices
SIM-free or SIM-unlocked Smartphones, Tablets, Wi-Fi Routers, and Computers
※Devices from Arrows, Motorola, and Rakuten-branded devices (such as Rakuten Hand / Mini) may experience compatibility issues and may not function properly. If you are using these devices, we recommend choosing our SoftBank or KDDI network plans.
■ Compatible Bands (Frequency Bands)
【NTT docomo Network】
5G: n78 (Main) / n79 / n28 / n1 / n257
4G / LTE: Band 1 / 3 / 19 / 21 / 28 / 42
■ Compatible SIM Size
3-in-1 (Standard / Micro / Nano compatible)
■ Package Contents
SIM Card / SIM Ejector Pin / Setup Guide (Japanese / English / Chinese)
【No Complicated Procedures Required】
No ID submission, contracts, or administrative fees required.
【Easy Setup】
After inserting the SIM card, simply follow the included guide to complete the quick APN setup.
【Reliable & Comprehensive Support】
Customer support is available in Japanese, English, and Chinese.
Please feel free to contact our customer support team for any inquiries before purchase (plan selection, device compatibility) or assistance after purchase (setup instructions, troubleshooting). We also provide support in case of any SIM issues during your trip, ensuring a worry-free stay.
Please check before purchase
【About the Product】
This product is a physical SIM card.
【Usage Period】
The start date of use (the date you set it) will be the ""first day"".
For example, whether you set it for 9am or 11pm, the same date will be the ""first day"".
The last day of the usage period will be available until 11:59pm on that day.
Usage start deadline
Within 6 months of purchase
Please be sure to start using the service within the expiration date.
You will no longer be able to use the service after the expiration date.
Compatible devices
A SIM-unlocked or SIM-free device is Required.
Please make sure to check the compatibility of your device before ordering.
Usage procedure
1. Purchase of product
Purchase this product on this website.
2. Receive the product
The SIM card will be delivered to your registered address.
3. Set up and start using on-site
Insert the SIM card into your device and follow the setup guide to set it up and you can start using it.
Shipping and delivery
【Shipping Schedule】
■ Orders placed before 14:00 (Taipei Time) on weekdays: Shipped on the same day
■ Orders placed after 14:00 (Taipei Time) on weekdays, or on weekends and holidays: Shipped sequentially from the next business day
Once your order is ready for shipment, we will notify you of the tracking number via email.
【Shipping Fees】
・Standard Delivery: NT$55
・Taiwan Mainland: Free shipping on single orders of NT$500 or more
・Taiwan Outlying Islands: Free shipping on single orders of NT$1,000 or more
・Japan Airport Post Office Pickup Service: 1,650 JPY
About cancellations, returns, exchanges, and refunds
【Handling Fees】
The following fees will be charged for cancellations, returns, exchanges, or refunds due to customer convenience.
■ Returns, Refunds, or Cancellations: 1,650 JPY
■ Product Exchanges: 1,100 JPY
*If the product has already been dispatched, additional shipping costs will be applied.
*Customers are responsible for all shipping costs incurred during returns or exchanges.
【When returns are possible】
・Please contact the support center (support@nipponsim.jp) within 7 days of arrival only if the product is unopened.
・Returns are not possible after opening.
【About return shipping fees】
・In the case of initial defects, our store will cover the cost.
・In the case of customer's convenience, the customer will be responsible for the cost.
【About refunds】
・In the case of initial defects or due to our convenience, we will provide a full refund.
・The same fees as above will be charged for refunds due to customer's convenience.
![Taiwan Domestic Shipping [Nippon SIM] Japan | 5 Days / 8 Days | Unlimited Data | docomo Network | Prepaid SIM Card*](http://store.dhamobile.jp/cdn/shop/files/DHA-SIM-296s_79a33978-f658-4fea-a660-121bddb2ac64.jpg?v=1751609462&width=1445)
![Taiwan Domestic Shipping [Nippon SIM] Japan | 5 Days / 8 Days | Unlimited Data | docomo Network | Prepaid SIM Card*](http://store.dhamobile.jp/cdn/shop/files/DHA-SIM-417s.jpg?v=1778745809&width=1445)