thewifi.co.jp

What It Is

THE WiFi is a Japanese mobile WiFi/pocket WiFi service operated by スマートモバイルコミュニケーションズ株式会社. It is positioned as a high-capacity monthly 100GB internet service and also supports use overseas. In essence, it is not an email or SMS channel, but a mobile data communication service for individuals and businesses.

Core Capabilities

In Japan, the service uses the LTE coverage areas of NTTドコモ, au, and ソフトバンク, with the device automatically selecting the most suitable carrier line based on location and building environment. For overseas use, the main text states that it can be used in 117 countries/regions without special application or setup—just turn it on—even in some countries with internet restrictions. However, notices also mention that overseas communication may be unavailable in places such as Kuwait and Myanmar. In terms of performance, the official website does not disclose specific download/upload speeds, latency, SLA, or availability figures. It only notes that the service may be unavailable in areas with weak signal or where the device does not support the relevant frequency bands.

Pricing and Contract

The main domestic offering is 100GB per month, but the captured text does not provide the full monthly fee. Additional charges include a general service fee and a telephone relay service fee. The device is paid for in 36 monthly installments, offset during the service period by a monthly “月月割” discount of 385 yen including tax, making the device effectively 0 yen with normal continued use. However, if the contract is canceled within 36 months, the discount stops and the user must pay the remaining installment balance. Overseas usage is not free within the 100GB allowance. For AIR-1, billing is daily, with a maximum of 5GB per day, priced at 1,200/1,600/2,500 yen. For U2s, NA01, and NA02, pricing is 850 or 1,250 yen per 1GB, with a maximum of 3GB per day. Individuals can only pay by credit card, while corporate customers can only pay by bank account transfer.

Pros and Cons

Pros include coverage across Japan’s three major LTE networks, a relatively simple application process, no need to apply for overseas use, same-day shipping on weekdays before noon, and optional services such as device compensation, remote support, security software, and cloud backup. The downsides are that the 36-month remaining balance mechanism weakens the flexibility of having “no minimum usage period”; simply turning the device on overseas may incur charges; the payment options for individuals are limited; public performance data is insufficient; and past announcements show there have been communication outages and speed degradation.

Who It’s For and Access from China

It is suitable for users and businesses living long-term in Japan, working on the go, temporarily replacing fixed-line broadband, or occasionally needing internet access overseas. The text provides no evidence regarding access to the official website or service availability from mainland China, so this remains unknown.