AT&T - United States

AT&T United States uses LTE Band 2 (1900 MHz PCS) for its network. This band offers faster speeds than some of AT&T's other frequency bands but with slightly less coverage. It is primarily used in densely populated areas and urban centers to offload traffic and provide higher capacity for users. The deployment of this band began in 2013, with initial commercial LTE service starting in various markets such as New York City, Washington, D.C., Baltimore, Dallas, Philadelphia, and San Francisco by the end of that year.

AT&T uses LTE Band 4, also known as AWS-1, which operates on the frequency range of 1700 MHz for the uplink and 2100 MHz for the downlink. This band provides a good balance between capacity, density, and penetration/range, making it a popular choice for LTE deployments. It can be used as a single band or as part of a multi-band network, and it supports carrier aggregation with other bands to enhance network performance.

AT&T United States uses LTE Band 17 (700 MHz bc) for its network. This band operates in the 700 MHz range, specifically between 704-716 MHz for the uplink and 734-746 MHz for the downlink, with a duplex spacing of 30 MHz. It is known for its excellent propagation characteristics, allowing signals to penetrate buildings and cover larger geographic areas with less infrastructure. The band is used for mobile broadband services, including smartphones, tablets, and laptops, and is also utilized in carrier aggregation configurations with other bands to enhance network performance and capacity.

AT&T United States uses the 2300 MHz WCS spectrum for LTE, which is designated as LTE Band 30. This band was deployed in 2015, with AT&T beginning to deploy LTE on its 2.3 GHz WCS spectrum in a handful of markets around the country.

AT&T uses LTE Band 5 (850 MHz) for its network. This band is primarily used for 3G (HSPA+) connectivity but also supports LTE in certain areas. It provides additional coverage and complements the lower frequency bands, particularly in dense urban areas. The band is beneficial for its wide coverage and good building penetration, making it suitable for both rural and urban environments.

AT&T United States uses LTE Band 12 (700 MHz ac) as part of its LTE network. This band provides wide coverage and better building penetration, making it particularly beneficial for rural areas and ensuring reliable service even in remote locations. AT&T initially built out its network using Band 17, which is a subset of Band 12, but it has since supported Band 12 as per FCC requirements. The deployment of Band 12 began in 2017, allowing AT&T to offer near-nationwide coverage and support roaming on compatible LTE networks.

AT&T United States uses LTE Band 14, which operates in the 700 MHz Public Safety (PS) band. This band provides wide coverage and better building penetration, similar to Verizon. It is particularly beneficial for rural areas and ensures reliable service even in remote locations.

AT&T United States uses LTE Band 29 (700 MHz de) for supplemental downlink to enhance download speeds. This band is used to increase download speeds, but it cannot be used for uploading data back to the cell site. The deployment of this band is known to be in most areas, with some lucky markets on the East and West coasts having 10 MHz of this spectrum band.

AT&T United States uses LTE Band 46 (TD 5900 MHz) to provide additional capacity in urban areas using unlicensed spectrum. This band was added to AT&T's network on January 1, 2018.

AT&T United States uses LTE B48 (TD 3600 MHz) for additional capacity and coverage in select areas, particularly indoors. It was deployed in 2020.

AT&T United States uses LTE band 66 (1700/2100 MHz) as an extension of band 4, adding more capacity and speed. This band includes additional blocks of spectrum, providing more bandwidth and supporting higher data rates. It is deployed in 10x10 chunks, and it is commonly seen in areas like New York and New Jersey.

AT&T United States uses the 5G NR frequency band n5, which covers the 824 to 894 MHz range. This band is primarily used for the 850 MHz CLR frequency. The deployment of this band for 5G NR began in December 2019, when AT&T started using part of the 850 MHz band for its low-band 5G service.

AT&T United States uses frequency band 5G NR N77 (3700 MHz) for its 5G network. This mid-band spectrum was added to AT&T's network in 2021, providing a balance between coverage and capacity, enhancing 5G performance in both urban and suburban areas.

AT&T United States uses frequency band 5G NR N260 (mmWave 39 GHz) for its high-band 5G network. This band offers the fastest speeds available on AT&T's 5G network, with speeds potentially reaching up to 3Gbps. The deployment of this band began in parts of Milwaukee, Wisconsin, and it is expected to provide coverage in select urban areas and hotspots.

AT&T United States uses frequency band 5G NR N2 (1900 MHz) for its 5G network. This band was deployed in late 2020 via Dynamic Spectrum Sharing (DSS) with LTE.

AT&T United States uses the 5G NR frequency band n66 (1700/2100 MHz). This band operates in the frequency range of 1710 - 1780 MHz for the uplink and 2110 - 2200 MHz for the downlink, with a total bandwidth of 90 MHz. It uses Frequency Division Duplex (FDD) technology. The band provides additional capacity and improved speeds, particularly in urban and suburban areas. It was added to AT&T's network on June 1, 2020.

AT&T United States uses the 5G NR frequency band n261 (mmWave 28 GHz) for its 5G network. This band operates in the millimeter-wave range, specifically at 28 GHz, and is designed for short-range transmission with high data rates. It is used for Fixed Wireless Access (FWA) and early mmWave mobility trials.