TikTok went dark for American users in an unprecedented display of the U.S.-China divide over technology and national security.The app started halting service Saturday night for 170 million users in its most important market shortly before a law took effect requiring it to shed its Chinese ownership or close in the U.

Trump will ‘most likely’ give 90-day reprieve to avoid app going ‘dark’ for 170 million users - TikTok said the Biden administration must give the likes of Google and Apple reassurances that they won’t be punished,