T-Mobile US

SignalWire, Inc. is a cloud communications platform that enables developers to create applications and infrastructure for voice, messaging, and video capabilities using real-time APIs. Founded in 2017 and headquartered in Palo Alto, California, the company builds on the legacy of the FreeSWITCH open-source project, aiming to provide a global network for real-time communications over secure, standards-based channels. Its offerings include SignalWire CLOUD, based on FreeSWITCH technology, and SignalWire STACK, an open-source platform. The products facilitate the development of rich audio and video applications that function seamlessly in mobile browsers without additional software. SignalWire’s technology supports a wide range of communication interfaces while emphasizing scalability and programmability. The company operates with a fully distributed workforce across multiple locations, which has influenced its product development and adaptability, especially during the pandemic. Additionally, SignalWire is engaged in advancing the standards that underpin real-time communications on the Internet, positioning itself as a leader in software-powered telecommunications solutions.

Sprint was an American telecommunications company that provided a wide array of wireless and wireline communication services to consumers, businesses, and government entities. At its peak, Sprint was known for its innovative technologies and significant contributions to the telecommunications industry, including two wireless networks that served nearly 49 million customers. The company offered a variety of services, such as wireless voice, messaging, and broadband solutions, and was recognized for its industry-leading mobile data services and instant push-to-talk capabilities. Sprint's operations culminated in a merger with T-Mobile US on April 1, 2020, marking a significant consolidation in the telecommunications sector.

Metro by T-Mobile is a wireless telecommunications carrier that offers wireless broadband mobile services in the United States. The company's services comprise voice services that allow customers to place voice calls to, and receive calls from, any telephone in the world, including local, domestic long distance, and international calls; data services, such as ringtones, ring back tones, games and content applications, text and multimedia messaging services, mobile Internet browsing, mobile instant messaging, location based services, social networking services, and push e-mail; and custom calling features consisting of caller ID, call waiting, three-way calling, and voicemail. It also sells mobile handsets. The company sells its products and services, under the MetroPCS brand name, directly through company-operated retail stores and indirectly through independent retail outlets, as well as through Internet. As of December 31, 2009, it operated approximately 153 retail stores in the metropolitan areas of Atlanta, Boston, Dallas/Ft. Worth, Detroit, Las Vegas, Los Angeles, Miami, New York, Orlando/Jacksonville, Philadelphia, Sacramento, San Francisco, and Tampa/Sarasota. The company is headquartered in Richardson, Texas.

Ubiquisys is a mobile communications company specializing in the design and development of devices for mobile operators and consumers. The company is recognized for its ZoneGate femtocell system, a compact plug-and-play device that connects to home or office broadband, delivering 3G coverage and supporting various mobile services. Ubiquisys is also a leader in intelligent small cell technology, with its products deployed by over 70 operators worldwide. Additionally, the company offers solutions in the wireless-wireline convergence market, enhancing connectivity in both residential and commercial settings.

BelAir Networks wireless networking equipment is deployed by the world's leading service providers including AT&T, Comcast and Time Warner Cable. The company's portfolio of indoor access points and outdoor picocell base stations, control and management systems enable service providers to deploy high performance, scalable and flexible wireless networks. BelAir Networks solutions provide a compelling return on investment enabling service providers to capitalize on the explosive growth of mobile data devices, applications and usage. Innovative cable, telecom and mobile service providers use BelAir Networks to drive revenue and improve competitiveness. Founded in 2002, BelAir Networks is a privately held company with Tier 1 carrier customers and backed by investment from Comcast Interactive Capital, T-Mobile Venture Fund and leading venture capital firms including Trilogy Equity Partners. For more information, visit www.belairnetworks.com.

Suncom Wireless Holdings is a rapidly growing provider of wireless personal communications services in the southeastern United States. Their personal communications services licenses cover approximately 13 million potential customers in a contiguous geographic area encompassing portions of Virginia, North Carolina, South Carolina, Tennessee, Georgia and Kentucky.