The country's three state-run telecommunications operators launched next-generation wireless technology services on Friday.
5G commercial services are now available in 50 cities, including Beijing, Shanghai, Guangzhou and Shenzhen, according to Chinese state news agency Xinhua. In Shanghai, nearly 1
"The scale of its network and the price of its 5G services will have a central impact throughout the supply chain," Bernstein analyst Chris Lane said in a research note earlier this week.
China has more mobile internet users than any other country, with around 850 million people using their smartphones to surf the internet , according to Xinhua.
Analysts at Jefferies predict that China will have 110 million 5G users – about 7% of the country's population – by 2020. South Korea launched its 5G network in April, and about 3% of the country's internet users subscribe to it, according to Jefferies.
Huawei, the world's largest manufacturer of telecommunications equipment and a leading smartphone brand, plays a major role in China's 5G network rollout.
Huawei has been under pressure from an American campaign against its business. Washington has urged countries to ban Huawei equipment from their 5G network, claiming Beijing could use it to spy. Huawei rejects that some of the products pose a security risk.
Despite the pressure, Huawei has found customers for its 5G products. The company said in an earnings report earlier this month that it had signed 60 commercial 5G contracts with carriers around the world, beating out its opponents Ericsson and Nokia.
More Chinese smartphone manufacturers have already started selling 5G devices in China.
But Huawei is in a pole position to dominate the market, "given the dense operating conditions of 5G network distribution and control over key components," according to Nicole Peng, an analyst at Canalys research firm.
Peng said in a research note Wednesday that local rivals including Oppo, Vivo and Xiaomi will "find it very difficult to make an impact."
CNN's Yong Xiong contributed to this story.