This article covers 【U Global i1 plus】 ポケットWiFi (日本国内100GB.
Overview
The U Global i1 plus is a prepaid, contract-free mobile router that comes with 100GB of data pre-loaded, valid for 365 days. No monthly fees, no return obligations — just power it on and connect. It supports 4G/LTE networks from Japan's three major carriers (docomo, au, SoftBank), delivering up to 300Mbps in good conditions. The built-in 2.4-inch LCD display shows a QR code for quick device pairing and real-time data usage tracking.
Equipped with a 4,000mAh battery, the i1 plus can run for approximately 20 hours on a single charge, making it suitable for day trips, business travel, or as a backup connection at home. It also works in 145 countries abroad with a separate daily pass (around ¥500 per day), so you can stay connected while traveling overseas.
Connectivity & Compatibility
The U Global i1 plus operates on Japan's 4G/LTE bands used by docomo, au, and SoftBank, ensuring broad coverage across urban and suburban areas. It supports dual-band Wi-Fi (2.4GHz and 5GHz) with IEEE 802.11 a/b/g/n/ac standards. Up to 16 devices can be connected simultaneously — enough for a small group or a family to share the connection.
For international use, the router can connect to local networks in 145 countries. You need to purchase a separate data pass (¥500/day for popular regions) through the official website before departure. Once activated, the router automatically connects upon arrival. Note that domestic data cannot be used abroad, and vice versa.
Product Info
The U Global i1 plus is sold under the Smalo DATA SIM brand as a buyout-type mobile router. It sits in the entry-to-mid range market, targeting users who want a simple, no-commitment internet solution. The package includes the router, a USB charging cable, and a quick-start guide. Warranty terms are defined by the manufacturer (check the official site for details).
The retail price is around ¥16,800, available from online retailers and other online retailers. If you run out of data, you can recharge anytime via the official website — the additional data is applied immediately after payment. This flexibility makes it a practical choice for temporary or occasional use.
Best Use Cases
- Short-term residents or travelers: Ideal for people staying in Japan for a few months (e.g., exchange students, temporary workers) who need internet without signing a long-term contract. No credit check, no cancellation fees.
- Frequent overseas travelers: Use the router domestically and then activate the international pass when abroad. Avoids the hassle of buying local SIMs. However, heavy data users may find the daily pass expensive for long trips.
- Backup or secondary connection: Keep the i1 plus in your car or bag as a spare internet source for emergencies, road trips, or when your main line goes down. Since there's no monthly fee, it costs nothing to keep it idle.
- Tech-averse users: The QR-code-based setup eliminates complicated configuration. Just scan with your phone and you're online. No need to deal with carrier shops or paperwork.
Product Disclosure (Amazon)
- Manufacturer: Smaho DATA SIM
- Seller: スマホショップ(亜太電信)
- Fulfilled by: Amazon
- ASIN: B0C3XMJZ2W
- Note: This article covers a manufacturer-made product based on Amazon listing details.
