U.S. Cellular — BrandWiki

U.S. Cellular

Overview

Array Digital Infrastructure

trade name	Array Digital Infrastructure
former name	United States Cellular Corporation
type	Public
traded as	nyse: AD (Common stock) Russell 2000 component
founder	LeRoy Carlson
founded	1983
defunct	August 1, 2025 (as UScellular)
fate	Wireless operations acquired by T-Mobile US, with its spectrum holdings business renamed to Array Digital Infrastructure
location	Chicago, Illinois, U.S.
num employees	4,800 (1Q 2023)
industry	Telecommunications
revenue	US$4.02 billion (2019)
net income	US$133 million (2019)
website	arrayinc.com (Current entity) uscellular.com (T-Mobile subsidiary)

Array Digital Infrastructure (Formerly known as United States Cellular Corporation aka UScellular) is an American shared wireless communications infrastructure manager and former mobile network operator. As UScellular, its stock was publicly traded, but Telephone and Data Systems Inc. owned a controlling stake (83% economic and 96% voting power). The company was formed in 1983 and was headquartered in Chicago, Illinois. UScellular was the fifth largest wireless carrier in the United States, with 4.4 million subscribers in 21 states as of March 31, 2025.[1]

In May 2024, T-Mobile US announced it would acquire UScellular's wireless customers and retail outlets, plus 30% of its wireless spectrum licenses in a deal worth $4.4 billion. The deal closed on August 1, 2025; currently known as "USCellular, now a part of T-Mobile", customers and stores will eventually be transitioned to T-Mobile.[2] In addition to the T-Mobile deal, UScellular announced that it had reached agreements to sell 55% of its remaining wireless spectrum license holdings for approximately $1 billion to AT&T and $1 billion to Verizon.

1980s and 1990s

United States Cellular was founded as a subsidiary of Telephone and Data Systems Inc.[3] (TDS) and incorporated on December 23, 1983. began operations in Knoxville, Tennessee (June), and Tulsa, Oklahoma (August). The company went public in 1988 where United States Cellular adopted USM as its ticker symbol on the American Stock Exchange.[4] In 1999, United States Cellular relaunched under the “U.S. Cellular” brand name and image across all markets nationwide.

2000s

The company purchased PrimeCo Wireless Communications in 2002 and launched in the Chicago area on November 22. It built on this growth by signing Chicagoan Joan Cusack as national spokesperson. In January 2003, U.S. Cellular acquired naming rights to the baseball stadium used by the Chicago White Sox.[5] Formerly known as Comiskey Park, the stadium was officially renamed U.S. Cellular Field (it was renamed Guaranteed Rate Field in 2016). That same year, U.S. Cellular and Cingular (now owned by AT&T Mobility) exchanged wireless assets and U.S. Cellular received new spectrum in markets of 13 states. In 2005, U.S. Cellular entered the St. Louis market, making it the second largest market U.S. Cellular served, after Chicago. In October 2008, U.S. Cellular launched Mobile Broadband, a service enabling customers to access data on its cell phones 10 times faster than before. It brought DSL-like service and capabilities to customers through EVDO (Evolution-Data Optimized) technology, commonly referred to as 3G. As of Q2 2008, U.S. Cellular was preparing to roll out 3G/EVDO revision A to select markets.

2010s

In May 2011, U.S. Cellular announced that it will offer 4G LTE. In a surprising move, U.S. Cellular announced the sale of several markets to Sprint Corporation including its home market of Chicago.[6] In June 2016, Google announced that it partnered with U.S. Cellular as part of its Google Fi service. U.S. Cellular contributed its network and LTE service to the "network of networks" along with T-Mobile US and Sprint Corporation.[7]

2020s

In March 2020, U.S. Cellular debuted launch of 5G in Wisconsin and Iowa[8] U.S. Cellular rebranded as UScellular and upgraded its logo in the fall of that year.[9]

In February 2023, Google Fi discontinued its partnership with UScellular in a statement saying "We will no longer be an official network partner of Google Fi," UScellular senior manager of media relations Katie Frey told CNET over email. "We value our relationship with Google, and we look forward to continuing our collaboration in other ways."[10]

In 2023, parent company TDS, announced that it was exploring strategic alternatives for UScellular. [11]

In January 2024, UScellular shut down its 2G/3G CDMA network with the spectrum being reallocated to its 4G LTE and 5G NR networks.[12]

Network

4G LTE network

U.S. Cellular began offering 4G LTE coverage to customers in the first quarter of 2012.[19] The rollout started in cities in Iowa, Wisconsin, Maine, North Carolina, Texas and Oklahoma.[20] In 2012, U.S. Cellular added 4G LTE in additional markets throughout the country.

Its LTE network was primarily built upon two low-frequency LTE bands; 12 and 5.[21] Through an agreement with King Street Wireless,[22] U.S. Cellular has access to the lower 700 MHz A, B, and C blocks across most of its markets. Spectrum bandwidth includes, 5*5, or 10*10 MHz on band 12 700 MHz 5*5 MHz on band 5 850 MHz 5*5, or 10*10 MHz on band 4 AWS 1. U.S. Cellular also has 5Mhz or 10Mhz of spectrum on Band 66 (AWS-3) in some markets.

The company began VoLTE trials during 2016, launched its first market with VoLTE during the first quarter of 2017.[23]

In December 2019, the FCC found U.S. Cellular shared misinformation about its 4G LTE coverage, exaggerating performance by as much as 38% and only managing to reach the federally mandated minimum speeds 45% of the time.[24]

5G network

In June 2019, U.S. Cellular successfully bid for high frequency spectrum in the Federal Communications Commission’s (FCC) Millimeter Wave Spectrum Auctions and purchased licenses covering 98 percent of its subscribers for $256.0 million or 1.7 cents per MHz pop. This laid the foundation for October 2019, when U.S. Cellular officially announced plans to launch its 5G service. The company launched its first phone with support, the Samsung Galaxy S20, as well as coverage maps for its first commercial 5G network in both urban and rural parts of Iowa and Wisconsin in February 2020.[25]

Roaming agreements

UScellular currently has roaming agreements with AT&T Mobility and Verizon Wireless. This allows customers to roam on AT&T with LTE or 5G speeds and Verizon Wireless with LTE only for no extra charges.

Previously, T-Mobile U.S. was used for LTE and 5G, but that previous agreement wound down in December 2022. UScellular also used Verizon for 1X and 3G roaming before the wind-down of Verizon's CDMA network in the same month.[26]

Radio frequency summary

The following is a list of known LTE and 5G NR frequency bands which UScellular employed in the United States: