NTT DOCOMO provides mobile telecommunication services through its W-CDMA networks in Japan. The company offers voice, data, and other value-added services; public wireless LAN and international roaming services; and satellite cell phone services. Its products and services include Office Link, which allows mobile phones to be used as internal lines; Business Mopera Anshin Manager, which enables the unified control of corporate mobile phones; Business Plus, a package of cloud-based enterprise services; Dcreators, an online market for accessories, smartphone cases, and interior accessories; Dfashion, a fashion e-commerce site; Dkids, an educational content service for families with infants; Dtravel, a travel service that offers travel support services; and Ddelivery, a food delivery service. In addition, NTT DOCOMO provides Docomo Mail, a cloud-based email service; Docomo ID, an account identification service; machine-to-machine (M2M) services; and Petfit, which allows users to check their pet dog’s health condition or location through smartphones or other devices. Further, it offers services in various business fields, including media, finance, commerce, healthcare, M2M, aggregation, ecology, and safety. Additionally, the company operates in the medical database business as well as provides lifestyle guidance in dining and cooking areas. In addition, it purchases and sells smartphones, tablets, and data communication devices. NTT DOCOMO was founded in 1991 and is headquartered in Tokyo, Japan. Currently, NTT DOCOMO, Inc. operates as a subsidiary of Nippon Telegraph and Telephone Corporation.

Datang Mobile Communications Equipment Co., Ltd (hereinafter referred to as ‘Datang Mobile'), registered and established in Beijing on February 8, 2002, is one of the core members of Datang Telecom Technology and Industry Group (hereinafter referred to as ‘Datang Group'). The company headquarters in Beijing, with one subsidiary in Shanghai and one branch in Xi' an.

Nokia Solutions & Networks Oy provides mobile broadband services. The company is headquartered in Espoo, Finland.

QUALCOMM, Inc. engages in the development, design, and provision of digital telecommunications products and services. It operates through the following segments: Qualcomm CDMA Technologies (QCT), Qualcomm Technology Licensing (QTL), and Qualcomm Strategic Initiatives (QSI). The QCT segment develops and supplies integrated circuits and system software based on technologies for the use in voice and data communications, networking, application processing, multimedia, and global positioning system products. The QTL segment grants licenses and provides rights to use portions of the firm's intellectual property portfolio. The QSI segment focuses on opening new or expanding opportunities for its technologies and supporting the design and introduction of new products and services for voice and data communications. The company was founded by Franklin P. Antonio, Adelia A. Coffman, Andrew Cohen, Klein Gilhousen, Irwin Mark Jacobs, Andrew J. Viterbi, and Harvey P. White in July 1985 and is headquartered in San Diego, CA.

Vivace Networks, Inc. developed optical service creation platforms for service providers who are creating the public data network. It delivered a broad range of MPLS switches for next-generation Internet, intranet and extranet applications.\nIt was founded in 1999 and located in San Jose, CA

CommScope Technologies LLC manufactures and distributes communications equipment. The company is headquartered in Hickory, NC.

Telefonaktiebolaget LM Ericsson engages in the provision of telecommunications equipment and related services to mobile and fixed network operators. It operates through the following segments: Networks, Digital Services, Managed Services, and Emerging Business and Other. The Networks segment supports all radio-access technologies and offers hardware, software and related services for both radio access and transport. The Digital Services segment provides software and services in the areas of digital business support systems, operational support systems, cloud communication, cloud core, and cloud infrastructure. The Managed Services segment includes networks and information technology managed services, network design and optimization, and application development and maintenance. The Emerging Business and Other segment encompasses emerging business, Iconectiv, Red Bee Media, and Media Solutions. The company was founded by Lars Magnus Ericsson in 1876 and is headquartered in Kista, Sweden.

Nokia Siemens Networks Oy engages in the provision of telecommunication services. It operates through the Mobile Broadband and Global Services business units. The Mobile Broadband business unit provides mobile operators with radio and core network software together with the hardware needed to deliver mobile voice and data services. The Global Services business unit comprises customer care, network implementation and professional services. The company was founded in 2007 and is located in Espoo, Finland.

Huawei Technologies is a telecom solutions company that offers infrastructure application software and devices with wireline, wireless, and IP technologies. The company’s products and solutions have been deployed in over 100 countries and have served 45 of the world's top 50 telecom operators as well as one third of the world's population. Huawei Technologies has 3 divisions in the United States: enterprise (IP networking and routers, wireless, storage, data center security), carrier, and consumer devices (smartphones and tablets). Founded in January 1987, Huawei Technologies is headquartered in Shenzhen, Guangdong. Its testing lab is based in Plano, Texas with an additional office in Santa Clara, California.

Hitachi Ltd. is engaged in the manufacture and sale of electrical equipment. It operates through the following segments: Information Technology (IT), Energy, Industry, Mobility, Life, Hitachi High Technologies, Hitachi Construction Machinery, Hitachi Metals, Hitachi Chemical and Others. The IT segment handles systems integration, consulting, control systems, cloud services, software, IT products such as storage and servers, and automated teller machines. The Energy segment pertains to power generation systems (nuclear power, renewable energy & thermal power) and power grid systems. The Industry segment covers industrial and distribution systems, water & environment systems, and industrial equipment. The Mobility segment includes building systems like elevators & escalators, and railway systems. The Life segment manages medical equipment; life & ecosystems such as refrigerator, washing machine, room & commercial air conditioner; automotive systems including powertrain system, chassis systems and advanced driving support systems. The Hitachi High Technologies segment covers medical & life science products, analytical equipment, semiconductor manufacturing equipment, manufacturing & inspection equipment, and advanced industrial materials. The Hitachi Construction Machinery segment handles hydraulic excavators, wheel loaders, mining machines, maintenance services, civil engineering solutions, and mine operation management systems. The Hitachi Metals segment manages special steel products, base material products, magnetic materials, power electronics, and wire materials. The Hitachi Chemical segment covers functional materials (electronic materials, wiring board materials & electronic components), advanced components and systems (mobility materials, power storage devices & life science related products). The Others segment provides optical disc drives and real estate management services. The company was founded by Namihei Odaira in 1910 and is headquartered in Tokyo, Japan.

Intel Corp. engages in the design, manufacture, and sale of computer products and technologies. It delivers computer, networking, data storage, and communications platforms. The firm operates through the following segments: Client Computing Group (CCG), Data Center and AI (DCAI), Network and Edge (NEX), Mobileye, Accelerated Computing Systems and Graphics (AXG), Intel Foundry Services (IFS), and All Other. The CCG segment consists of platforms designed for notebooks, 2-in-1 systems, desktops, tablets, phones, wireless and wired connectivity products, and mobile communication components. The DCAI segment delivers solutions to cloud service providers and enterprise customers, along with silicon devices for communications service providers and high-performance computing customers. The NEX segment offers computing system solutions from inflexible fixed-function hardware to general-purpose compute, acceleration, and networking devices running cloud native software on programmable hardware. The Mobileye segment develops driving assistance and self-driving solutions. The AXG segment provides products and technologies designed to help customers solve the toughest computational problems. Its products include CPUs for high-performance computing and GPUs targeted for a range of workloads and platforms, from gaming and content creation on client devices to delivering media and gaming in the cloud, and the most demanding high-performance computing and AI workloads on supercomputers. The IFS segment refers to full stack solutions created from the foundry industry ecosystem. The All Other segment represents results from other non-reportable segments and corporate-related charges. The company was founded by Robert Norton Noyce and Gordon Earle Moore on July 18, 1968, and is headquartered in Santa Clara, CA.

Apple is a corporation that designs, manufactures, and markets mobile communication and media devices, personal computers, portable digital music players, and sells a variety of related software, services, peripherals, networking solutions, and third-party digital content and applications. Apple provides many products and services, including iPhone; iPad; iPod; Mac; Apple TV; a portfolio of consumer and professional software applications; the iOS and OS X operating systems; iCloud; and accessories, service, and support offerings. It sells its products worldwide through its retail stores, online stores, direct sales force and third-party cellular network carriers, wholesalers, retailers, and value-added resellers to the consumer and also sells third-party iPhone, iPad, Mac and iPod compatible products, including application software and accessories through its online and retail stores. Introduced in 1984, the Macintosh was the first widely sold personal computer with a graphical user interface (GUI). That feature and others such as an improved floppy drive design and a low-cost hard drive that made data retrieval faster helped Apple cultivate a reputation for innovation. Apple was named as the most admired company in the United States in 2008 and in the world from 2008 to 2012 by the Fortune magazine. The company was founded by Steven Paul Jobs, Steve Wozniak, and Ronald Gerald Wayne on April 1, 1976, and is headquartered in Cupertino, California.

Part of Telefonaktiebolaget LM Ericsson, Ericsson Australia Pty Ltd. is an Australian company located in North Ryde that manufactures telecommunications equipment.

China Mobile Group Zhejiang Co., Ltd. is a company headquartered in Hangzhou, China and ultimately controlled by the Government of China. The firm provides mobile telecommunications services.

Shenzhen Guoren Wireless Communication Co., Ltd., established on 2019-06-03, Business scope includes general business items:Technology development of communication products,Purchase and sale and other domestic trade;communication products(Including mobile communication system equipment)and related electronic components(Including frequency control and selection components,hybrid integrated circuit)technology development and wholesale;Network system integration technology development;Communication equipment sales;Import and export of goods and technology;Database and computer network technology services;electronic product,electronic integrated circuit,mobile data terminal,Network Communication Products,Technology development of computer hardware and software,design and sales.Power Internet of Things Products,Electrical Fire Monitoring System,Fire IoT system,IoT Management System,energy management system,Work order management system,Energy monitoring and energy saving,Research and development of contract energy management,Install,Sales and technical service.(above according to the law,Administrative regulations,Decisions of the State Council and other regulations that require approval,Can only operate after obtaining relevant approval documents according to law).,The licensing program is:Production and operation repeater,base station,digital technology products,WLANproduct,DDSIndoor distribution system,Ultra-broadband multi-service indoor distribution system,Antenna Broadcasting and TV Transmitting Equipment,antenna;Communication information network system integration(1,telecommunications switching network,intelligent network,data network,Total investment in multimedia network etc.2000Communication business network engineering projects below 10,000 yuan;2,network system,Signaling network,syncnet,billing center,Total investment in data center etc.2000Telecom support network engineering projects below 10,000 yuan;3,Optical cable network,microwave communication,Satellite Communications,Total investment in access network etc.1000Telecommunications infrastructure network engineering projects below 10,000 yuan);On-site maintenance of communication equipment(No restricted items);Value-added Telecom Services;electronic product,electronic integrated circuit,mobile data terminal,Network Communication Products,Production of computer hardware and software;Communication equipment manufacturing.Low voltage electrical appliances,distribution switch,Wisdom space,Smart manhole cover,Smart lock,Locator,IoT product development,Production,manufacturing and sales

ONKYO Corporation engages in the manufacture and sale of various consumer electronics products and industrial components worldwide. It provides various audio/visual (A/V) components, including A/V receivers, and DVD and Blu-ray players/receivers; network components, such as network receivers; and Hi-Fi components comprising receivers, amplifiers, tuners, CD players, and cassette decks. The company also offers loudspeakers, front/center/surround speakers, subwoofers, and speaker packages; and system components consisting of home theater systems, A/V systems, and mini systems, as well as various accessories, such as RI dock and universal port accessories. The company was formerly known as Osaka Denki ONKYO K.K. and changed its name to ONKYO Corporation in September 1971. ONKYO Corporation was founded in 1946 and is headquartered in Osaka, Japan.

AT&T Inc. is an American multinational conglomerate holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. It is the world's largest telecommunications company, the largest provider of mobile telephone services, and the largest provider of fixed telephone services in the United States through AT&T Communications. Since June 14, 2018, it is also the parent company of mass media conglomerate WarnerMedia, making it the world's largest media and entertainment company in terms of revenue. As of 2018, AT&T is ranked #9 on the Fortune 500 rankings of the largest United States corporations by total revenue.

China Academy of Telecommunications Technology (doing business as Telecommunications Technologies Research Institute) is a Chinese company located in Beijing and ultimately controlled by the Government of China that engages in the research and development of telecommunications technologies. The firm was founded in 2001.