Telecom Square, Inc. (Headquarters: Chiyoda-ku, Tokyo; President: Yuji Yoshitake; hereinafter "the Company"), a provider of cross-border mobile communication solutions worldwide, will expand the lineup of countries and regions covered by its 5G Unlimited Plan for its corporate communication service "Wi-Ho!Biz" starting July 2, 2026 (Thu), making it available in a total of 81 countries and regions. The 5G Unlimited Plan will offer the industry's leading number of supported countries and regions for major corporate overseas Wi-Fi rental services in Japan, enabling companies with diverse overseas business trip destinations to cover a wider area with a single service. In recent years, while overseas communication options such as eSIM and SIM cards have diversified, Wi-Fi rental continues to be in high demand for corporations due to reasons such as "simultaneous connection of multiple devices is possible," "no device setup required," and "easy centralization of expense settlement and usage management." To meet these specific corporate communication needs, the Company launched its 5G Unlimited Plan in May 2025. To accommodate the diversification of overseas business trip destinations and the expansion of corporate global operations, 42 new countries and regions, including the Middle East/Gulf region (e.g., UAE, Saudi Arabia), Africa (e.g., Kenya, Nigeria), and South America (e.g., Brazil, Argentina), will be added starting July 2 (Thu). This will allow for more detailed coverage of various business scenarios, such as overseas business trips, project promotion with overseas bases, travel to factories and construction sites, on-site inspections, and participation in international conferences. High-speed communication required for tasks such as high-definition online meetings, cloud services, and large data transmission/reception can also be used comfortably without worrying about communication capacity. Furthermore, corporate clients with multiple travel destinations can co