This article covers ［U Global i1 plus］チャージWiFi モバイルルーター 海外145カ国対応 人気エリア1日500円で使い放題 リチャージ対応 ギガ付き 電源ONで即時使える ポケットWifi 契約不要 月額費用無し 端末買い切り【大容量 日本国内 100GB.

Overview

The U Global i1 plus ChargeWiFi Mobile Router is a pay-once portable WiFi device with no monthly fees or contracts. It comes with 100GB of data preloaded, valid for one year from first use. The router supports 4G LTE across Japan's major carriers (docomo, au, SoftBank) and features a large 4000mAh battery rated for up to 20 hours of continuous operation. A 2.4-inch LCD display shows connection info and a QR code for instant device pairing.
Beyond domestic use, it works in 145 countries (additional data packs sold separately) with flat daily rates as low as ¥500 in popular destinations. This makes it a cost-effective alternative to rental pocket WiFi for frequent travelers.

Connectivity & Compatibility

The i1 plus connects via WiFi (802.11a/b/g/n/ac, dual-band) and can share its internet connection with up to 10 devices simultaneously. It supports LTE Category 4 with 2x2 MIMO and downlink 2-carrier aggregation for theoretical speeds up to 300Mbps. No SIM card is required – the device comes with an embedded data plan. In Japan, it automatically connects to docomo, au, or SoftBank networks. For overseas use, you purchase regional data packs from the official website after arrival. The router also works as a standard Wi-Fi hotspot for smartphones, tablets, laptops, and even printers or security cameras.

Product Info

Released in 2023 under the Smaho DATA SIM brand, the U Global i1 plus is positioned as an entry-to-mid tier mobile router. Its retail price is approximately ¥17,800 (tax included). The package includes the router, a USB charging cable, and a quick-start guide. The device carries a one-year manufacturer warranty. It is primarily sold through online retailers and the official U Global website. Compared to carrier-contract pocket WiFi or rental services, this buy-once model eliminates recurring fees and return obligations, but the included 100GB data cap means it's best suited for moderate use rather than heavy streaming or large file downloads.

Best Use Cases

  • International travelers and business trips: With support for 145 countries and simple top-up via the website, this router eliminates the hassle of buying local SIMs or returning rental devices. It's especially cost-effective for short-to-medium trips in popular regions where daily rates are ¥500. However, for extended stays exceeding a few weeks, the cost of additional data packs may approach that of a local SIM.
  • Short-term internet needs: Ideal for temporary housing, long road trips, or as a fallback connection during home internet setup. No activation or cancellation procedures – just turn it on and use. But heavy streaming or regular large downloads will quickly exhaust the 100GB allowance, requiring a recharge.
  • Backup connection for remote work or emergencies: Keep it in your bag as a reliable secondary line. The 20-hour battery means it can last a full workday without recharging. However, if you rely on it daily as your primary internet source, the data limit and speed cap (4G LTE, not 5G) may become limiting.
  • Users who prefer a dedicated hotspot over phone tethering: Phone tethering drains battery and often imposes carrier speed throttling. This dedicated router provides consistent speed and frees up your phone. But it's an extra device to carry and charge.

Product Disclosure (Amazon)

  • Manufacturer: Smaho DATA SIM
  • Seller: スマホショップ(亜太電信)
  • Fulfilled by: スマホショップ(亜太電信)
  • ASIN: B0C9QV4H67
  • Note: This article covers a manufacturer-made product based on Amazon listing details.