Source: Was in Shenzhen within the past month. Normal customs/border control practices. Nobody asked for personal devices. Only surveillance that was obvious was biometric checkpoint at customs, and some sort of face scan (?) at the subway queue.
Source: Was in Shenzhen within the past month. Normal customs/border control practices. Nobody asked for personal devices. Only surveillance that was obvious was biometric checkpoint at customs, and some sort of face scan (?) at the subway queue.
That being said, foreigners accessing the normal WWW is really not a major concern if you think about it.
1. get a multiple entry visa
2. say you're going to shanghai or whatever on the application
3. go to Xinjiang on your second visit
That doesn't mean there's no reason to ever visit, just that there aren't very many more reasons than for e.g. visiting the neighboring Kazakhstan. Most people crossing the border and getting subjected to the surveillance are probably ethnic Kazakhs living on either side, visiting relatives on the other.