China's mobile operators have made 5G services available to consumers as the country seeks to become a global technology leader.
State-owned carriers China Mobile, China Unicom and China Telecom unveiled their 5G data plans on Thursday.
It comes when Beijing and Washington have been embroiled in a power struggle over trade and technology.
5G is the fifth generation of mobile internet connection. It promises much faster downloading and uploading of data, wider coverage and more stable connections.
The Chinese carriers had originally planned for the launch next year, but accelerated the rollout.
The super-fast service is now available to consumers in 50 Chinese cities, including Beijing and Shanghai, with monthly plan rates ranging from 128 yuan ($ 18; £ 14) to 599 yuan, according to state media Xinhua.
More than 130,000 5G base stations will be activated by the end of the year to support the 5G network, the government said in the statement.  This would make it one of the world's largest 5G distributions, it said.
- Finally, 5G is here – but so what?
- What the Huawei struggle tells us about the US and China
China and the US have been fighting for leadership in the tech sector in recent months, with Chinese tech giant Huawei at the center of their power struggle.
Huawei has provided the largest amount of network equipment for China's 5G rollout and has been in talks with various other countries to help with their 5G network.
However, the United States has blacklisted the company, claiming that it poses a national security risk and has lobbied allies to remove Huawei from their 5G network.
Huawei denies this, and many in China see US actions as part of their efforts to curb the growth of the world's second-largest economy.