T-Mobile USA, Inc. engages in the provision of wireless voice, messaging, and data services. It offers different plans for phones and tablets. The company was founded by John W. Stanton in 1994 and is headquartered in Bellevue, WA.

Part of Tata Sons Pvt Ltd., ITXC IP Holdings SARL is a Luxembourgish company that functions as an investment holding company.

AT&T Intellectual Property (formerly known as AT&T Knowledge Ventures) is the holding company used for AT&T, Inc.'s trademarks & intellectual property assets. Formerly known as SBC Knowledge Ventures, L.P., and, before 2004, SBC Properties, L.P., the trademark holding was formed in late 2001, when the SBC name was added to the beginning of the names of its telephone companies.

Deutsche Telekom AG engages in the provision of telecommunications and information technology services. It operates through the following segments: Germany, United States, Europe, Systems Solutions, Group Development, and Group Headquarters and Group Services. The Germany segment comprises fixed-network and mobile activities for consumers and business customers in Germany, as well as telecommunications services for carriers. The United States segment combines mobile activities in the U.S. market. The Europe segment includes fixed-network and mobile operations of the national companies in Greece, Romania, Hungary, Poland, the Czech Republic, Croatia, Slovakia, Austria, North Macedonia, and Montenegro. The Systems Solutions segment offers integrated products and solutions to business customers. The Group Development segment manages entities, subsidiaries, and equity investments. The Group Headquarters and Group Services segment pertains to other Group units and focuses on technology and innovation. The company was founded on January 1, 1995 and is headquartered in Bonn, Germany.

Itsmobile Ltd, a subsidiary of NCR Corp., is a company headquartered in Ireland. The firm develops mobile software solutions which enable users to pay electronically for a range of services. Alphyra Group Ltd. acquired Itsmobile Ltd on August 13, 2004.

SI-TECH Information Technology Co., Ltd. engages in the research and development of cloud computing platform and application. Its products include customer relationship management, billing account, big data products and operations, business and network operations service software development and operation, mobile internet operation and service, partner relationship operation and management, and cloud and big data management and operation service systems. The company was founded by Fei Zhou Wu on December 25, 1995 and is headquartered in Beijing, China.

Ericsson, Inc. develops and markets wireless infrastructure equipment. Its products include antennas, transmitters, switching systems and other gears used to build wireless networks. The company was incorporated in 1992 and is headquartered in Plano, TX.

Provides industrial and building systems

China Telecom Corp., Ltd. is a Chinese Telecommunications company. It is one of the listed companies of state-owned China Telecommunications Corporation. Its H share traded in the Stock Exchange of Hong Kong since 15 November 2002. It is a constituent of Hang Seng China Enterprises Index, the index for H share of state-controlled listed companies.

Asiainfo Technologies (China) Ltd. provides software and information technology services to the telecommunications industry. Its products and solutions include Veris billing, Veris customer relationship management, Veris business intelligence , Veris real-time intelligence, and Veris open operational platform. The firm offers real-time charging and actionable intelligence at very large scale, cloud computing and centralized business support systems (BSS), big data support system, and telecommunication optimization. The company was founded by SuNing Tian and Jian Ding in October 1993 and is headquartered in Beijing, China.

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.

Xuanque Data Technology (Nanjing) Co., Ltd., established on 2005-12-22, The scope of business includes telecommunications equipment,Software Products,Development of digital devices,Production,to assemble,Sales,Serve;Self-operated and agent import and export business of various commodities and technologies(Except for commodities and technologies that the state restricts the company to operate or prohibits the import and export of).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments) General project:Single-purpose commercial prepaid card agency sales;Advertising Design,acting(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

Guangdong Science and Technology Research Institute of China Telecom Group Co., Ltd., established on 2002-05-27, Business scope includes research on telecommunications and communication technology,to develop,Serve,consult,introduce,Transfer and development of telecommunications products,Communication equipment new products,Promotion and Application of New Technology;Provide technical support services to Macao Telecom Network;Sales,lease,repair,Install communication equipment.

Shanghai Ideal Information Industry (Group) Co., Ltd., established on 1999-04-12, Business scope includes licensed projects:The second type of value-added telecommunications services.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,The specific business items are subject to the approval documents or licenses of relevant departments) General project:Research and Development of Communication and Information Products,Sales,Repair and Maintenance,Communication information consultation,plan,Engineering and System Integration(By qualification),Computer equipment and raw materials,electronics,Sales of Wujinjiaodian,Development and sales of computer software,Public safety technology prevention engineering design,construction,Sales of maintenance and related products,Own Equipment Rental(Except finance lease),e-commerce(Do not engage in telecommunications value-added business,Financial services),design,make,Acting for various advertising businesses,Advertise on owned media,Construction and installation,Building Intelligent Engineering,Building intelligent design and construction integration,Research and development of energy-saving products and equipment,design,Sales,Install,Maintenance and Technical Services,Intellectual property agency.(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

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.

Microsoft Technology Licensing LLC, part of Microsoft Corp., is a company headquartered in Tumwater, WA. The firm offers patent, licensing and legal support services for Microsoft products.

Harex InfoTech, Inc. (doing business as UBpay) is a South Korean private company located in Seoul. The firm provides payment solutions based on RF and infrared technology. It was founded in 2000 by Gyeong-Yang Park, he has been the CEO since then.

Guangdong Telecom Co., Ltd., established on 2002-10-10, The scope of business includes the operation of fixed telecommunications networks and facilities in Guangdong Province in accordance with the authorization of China Telecom Corporation(with local wireless loop)business;Operating voice over fixed telecommunication networks,data,Image and multimedia communication and information services;Perform foreign settlement of international telecommunication services according to national regulations,Operating system integration related to communication and information business,technology development,Technical Services,Technical Training,Information Consulting,Communication Network Construction.design,make,acting,Publish various advertisements at home and abroad;Publication of the Yellow Pages telephone directory,issued;Electronic Yellow Pages,Voice directory query;Yellow Pages Information Consultation;own property for rent.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)