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KT is South Korea's largest fixed-line telecom operator, with around 11.5 million fixed-line broadband customers and 9.4 million IPTV customers, and is the second-largest wireless operator with 26 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.

Tencent holds a prominent position in China's internet sector, with a diverse portfolio of products and services used daily by a significant portion of the population. The company is the world's largest video game publisher and owns Honor of Kings, a top-grossing mobile game globally. Tencent also operates WeChat, China's largest social media super app. WeChat is deeply integrated into the daily lives of Chinese people for communication, entertainment, shopping, and more. Beyond its offerings, Tencent is a significant player in global venture capital and investment. The company holds substantial stakes in leading companies including PDD, Kuaishou, and Epic Games.

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. In total, TIM claims it can offer fixed broadband service to about 16 million locations.

Deutsche Telekom merged its T-Mobile USA unit with prepaid specialist MetroPCS in 2013, and that firm merged with Sprint in 2020, creating the second-largest wireless carrier in the US. T-Mobile now serves 80 million postpaid and 25 million prepaid phone customers, equal to around 30% of the US retail wireless market. The firm entered the fixed-wireless broadband market aggressively in 2021 and now serves 7 million residential and business customers. In addition, T-Mobile provides wholesale services to resellers.