As the leading telecommunications services provider in Mainland China, the Group provides full communications services in all 31 provinces, autonomous regions and directly-administered municipalities throughout Mainland China and in Hong Kong Special Administrative Region, and boasts a world-class telecommunications operator with the world's largest network and customer base, a leading position in profitability and market value ranking.

Its businesses primarily consist of mobile voice and data business, wireline broadband and other information and communications services.

As of 31 December 2018, the Group had a total of 459,152 employees, and a total connection of 1.633 billion, with its annual revenue totalling RMB736.8 billion.