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Meta-owned Facebook and Twitter have been blocked in China since 2009, as part of a government crackdown against activists following deadly riots in Xinjiang province. China’s restriction of foreign media platforms and censorship of non-governmental material has been dubbed the Great Firewall of China. Meta’s messaging platform Whatsapp and its photo- and video-sharing app Instagram are also blocked. 18 Jan 2022
https://time.com/6139988/countries-where-twitter-facebook-tiktok-banned/
Twitter, Snapchat and TikTok, Messenger, Telegram, and Line, are also blocked.
Zoom is partially blocked.
LinkedIn is not available in China
The complete list:

https://www.saporedicina.com/english/list-of-blocked-websites-in-china/
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‘Abusing state power’: China lashes out at US over TikTok bans
Associated PressWed 1 Mar 2023 00.37 GMT
Beijing – which itself blocks access to Facebook, Twitter and many others – hits out at ban on Chinese-owned software on US government devices
US government bans on Chinese-owned video sharing app TikTok reveal Washington’s own insecurities and are an abuse of state power, a Chinese foreign ministry spokesperson has said.
China, though, has itself long blocked a large list of foreign social media platforms and messaging apps, including YouTube, Twitter, Facebook and Instagram.
The US government “has been overstretching the concept of national security and abusing state power to suppress other countries’ companies”, Mao Ning said at a daily briefing on Tuesday. “How unsure of itself can the US, the world’s top superpower, be to fear a young person’s favourite app to such a degree?”
The White House is giving all federal agencies, in guidance issued Monday, 30 days to wipe TikTok off all government devices. The White House already did not allow TikTok on its devices.
TikTok is used by two-thirds of American teenagers, but there is concern in Washington that China could use its legal and regulatory powers to obtain private user data or to try to push misinformation or narratives favouring China.
Congress and more than half of US states have so-far banned TikTok from government-issued mobile devices.
Some have also moved to apply the ban to any app or website owned by ByteDance, the private Chinese company that owns TikTok and moved its headquarters to Singapore in 2020.
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The app will be removed from Canadian government issued phones on Tuesday.
The European Union’s executive branch said last week it has temporarily banned TikTok from phones used by employees as a cybersecurity measure.
TikTok has questioned the bans, saying it has not been given an opportunity to answer questions and governments were cutting themselves off from a platform loved by millions.
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