SoftBank Group is a holding company. Domestic Telecommunications business provides mobile communication services, mobile devices, broadband services to retail customers, and telecom services to corporate customers in Japan. Sprint business provides mobile communication services and fixed-line telecommunication services in the U.S. Yahoo Japan business operates Internet-based advertising and e-commerce business. Distribution business distributes mobile devices overseas, and sells software and mobile device accessories in Japan. ARM business designs microprocessor intellectual property and related technology. SoftBank Vision Fund & Delta Fund business is engaged in the investment activities.

T-Mobile US provides mobile communications services, including voice, messaging and data, under its brands, T-Mobile and Metro? by T-Mobile, in the United States, Puerto Rico and the United States Virgin Islands. The company provides mobile communications services using its 4G Long-Term Evolution network and its 5G technology network. The company also provides various wireless devices, including handsets, tablets and other mobile communication devices, and accessories for sale, as well as financing through Equipment Installment Plans and leasing through JUMP! On Demand?. The company provides reinsurance for handset insurance policies and extended warranty contracts offered to its mobile communications customers.

Telecom Italia is a telecommunications group based in Italy. Co. is engaged in the communications sector and, particularly, the fixed and mobile national and international telecommunications sector, the television sector and the office products sector. Co. operates mainly in Europe, South America and the Mediterranean Basin. Co.'s operations are organized along two operating segments: Domestic - Italy (providing telephone and data services on fixed-line and mobile networks for final customers (retail) and other operators (wholesale)); and Brazil (operates in the mobile phone, fixed telephony, in long-distance and data transmission markets in Brazil).