The Ministry of Industry and Information Technology (MIIT) has pledged fresh measures to fight offensive content transmitted by mobile phones and websites.

China Mobile, China Telecom and China Unicom, the country's three mobile carriers, have been required to examine the quality of their business partners, Thursday's China Daily reported Thursday.

The MIIT also asked the Internet service providers to supervise the content of websites and close irregular websites.

Operators of pornographic websites had been evading supervision from authorities through technical tactics including frequently switching domain names and IP addresses, the paper quoted a report on PC World's online edition as saying.

The authorities will introduce a blacklist and the design of content-filtering technology to help network operators stem obscene content from reappearing.

The measures aimed to protect the healthy growth of the next generation and clean the social environment, the MIIT said in statement.