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SK Telecom is South Korea's largest wireless telecom operator, with 32 million mobile customers. The firm also owns SK Broadband (formerly Hanaro Telecom), which has 7.2 million broadband customers and 9.5 million pay TV customers (6.7 million IPTV and 2.8 million Cable TV). While the firm also purchased stakes in businesses in security and semiconductor memory production as well as developing e-commerce and internet platform businesses, these were all spun off into the separate, SK Square business in November 2021. The company was formed after SK Group purchased KT’s mobile business in 1994.

KT is South Korea's largest fixed-line telecom operator, with around 11.5 million fixed-line broadband customers and 9.5 million IPTV customers, and is the second-largest wireless operator with 28 million subscribers. Additionally, it has a number of nontelecom businesses, including real estate, payment processing, artificial intelligence, and IDC/cloud services, many of which are the focus of its growth strategy. The company was formed from the previously government-owned, monopoly telecom business and was listed in 1998. After selling its mobile business in 1994 (forming its mobile competitor, SK Telecom) KT created its own mobile operator in 1997.

TIM, which is 67%-owned by Telecom Italia, is the third largest wireless carrier in Brazil, with 62 million subscribers, equal to about 24% of the market. The firm also owns 49% of I-Systems, an infrastructure partnership that is expanding its network footprint across Brazil. I-Systems can provide broadband service to about 9 million locations, equal to 10%-15% of the country. TIM leases capacity on the venture's network to serve retail broadband customers under the UltraFibra brand. TIM also resells fiber network access from other providers, including Oi’s former infrastructure business V.tal.

Orange operates fixed-line and wireless businesses in France, where it is the market leader ahead of Iliad, Bouygues, and SFR, thanks to its incumbent position. It also has telecom businesses in Spain (through MasOrange), Poland, Belgium, Luxembourg, and Central Europe (Romania, Slovakia, and Moldova). Around 20% of revenue comes from emerging African markets, where it mainly operates wireless networks, and 20% comes from the enterprise segment, which serves companies with more than 50 employees in France and internationally.