AT&T Mobility
Company History
AT&T Mobility, a subsidiary of AT&T Inc., is one of the largest wireless telecommunications providers in the United States. The company traces its roots back to the original AT&T Corporation, which was founded in 1885 by Alexander Graham Bell. AT&T Mobility was formed in 2004 when Cingular Wireless acquired AT&T Wireless Services, and later rebranded to AT&T Mobility in 2007.
Throughout its history, AT&T has been a pioneer in telecommunications, from the first transcontinental telephone call to the development of cellular technology. Today, AT&T Mobility serves millions of customers across the United States and continues to invest heavily in network infrastructure and technology innovation.
Network Technology
AT&T operates a comprehensive wireless network utilizing multiple generations of cellular technology:
5G Network: AT&T has deployed a nationwide 5G network using a combination of low-band (850 MHz, 700 MHz), mid-band (3.7 GHz C-Band), and high-band (mmWave) spectrum. The network provides both coverage-focused 5G and high-speed 5G+ in major metropolitan areas.
4G LTE: AT&T's 4G LTE network is one of the most extensive in the country, covering over 99% of the U.S. population. The network uses advanced technologies like Carrier Aggregation, 4x4 MIMO, and 256 QAM to deliver high speeds and reliable connectivity.
Network Technologies: AT&T utilizes technologies such as VoLTE (Voice over LTE), Wi-Fi Calling, and HD Voice for enhanced call quality. The company also operates a robust 3G UMTS network in many areas, though it is being phased out in favor of more efficient technologies.
5G Network Deployment
AT&T has deployed a comprehensive nationwide 5G network covering over 290 million people across the United States. The company's 5G strategy utilizes multiple spectrum bands to provide both coverage and high-speed connectivity:
5G Nationwide: AT&T's low-band 5G network uses 850 MHz and 700 MHz spectrum to provide broad coverage across the country, reaching over 290 million people. This network ensures that customers can access 5G speeds in both urban and rural areas.
5G+ (Mid-Band and mmWave): AT&T's 5G+ service uses mid-band C-Band spectrum (3.7 GHz) and high-band mmWave spectrum to deliver ultra-fast speeds in major metropolitan areas. The C-Band deployment covers over 200 million people and provides speeds significantly faster than 4G LTE.
5G+ mmWave: In select high-traffic locations like stadiums, airports, and entertainment venues, AT&T has deployed mmWave 5G, which can deliver multi-gigabit speeds. This ultra-fast 5G is available in parts of over 50 major cities.
AT&T continues to expand its 5G network, with ongoing investments in C-Band spectrum deployment and network infrastructure. The company's 5G network also supports FirstNet, providing enhanced capabilities for public safety communications.
Network Infrastructure
With over 2.28 million cell towers, AT&T has built one of the most extensive wireless networks in the United States. The company has invested billions of dollars in network modernization, deploying advanced technologies like small cells, distributed antenna systems (DAS), and network function virtualization.
AT&T's network strategy focuses on providing reliable coverage in both urban and rural areas, with particular emphasis on expanding 5G capabilities. The company has been a leader in FirstNet, a dedicated public safety network, demonstrating its commitment to network reliability and innovation.
