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Adjustone, Inc.

Adjustone Inc. (established in 2010) is a telecommunications company that primarily provides communication services to corporations within Japan. The company is always evolving and transforming its business portfolio in anticipation of market trends. In recent years, it has expanded its business by transitioning its services, originally tailored for corporations, such as Wi-Fi rental services, physical SIM card wholesale, and the wholesale of reused mobile devices, into consumer-facing offerings. Recently, Adjustone has released high-speed, high-quality, and easily connected eSIM products targeted at the rapidly increasing number of overseas travelers to Japan. The company is now aiming for global expansion, beyond just the Japanese market.
Company overview
Company name
Adjustone, Inc.
WEB URL
www.adjust1.co.jp
Industry Category
Service
Phone Number
+81-03-5211-3388
Headquarters
Tokyo, Japan
Founded
2010
Press Release
HR / Recruitment
Launch of “JAPAN PREMIUM SIM,” an eSIM Service Exclusively for Visitors to Japan
Adjustone, Inc.
Jul 31, 2025