TikTok has pledged to "go dark" in the United States on Sunday, threatening access for 170 million app users without 11th-hour guarantees from the government, as President-elect Donald Trump says he is considering a reprieve -- after he takes office.

After months of legal tussles, the US Supreme Court on Friday upheld a law that would ban the popular video-sharing platform in the name of national security, unless its Chinese owners reach a deal to sell it to non-Chinese buyers by Sunday.

Only months after overwhelmingly backing the law, lawmakers and officials were now fretting about the ban, with all eyes on whether Trump can swoop in and find a way to save the app.

From teenage dancers to grandmothers sharing cooking tips, TikTok has been embraced for its ability to transform ordinary users into global celebrities when a video goes viral.

It also has a fan in Trump, who has credited the app with connecting him to younger voters, contributing to his election victory in November.

After discussing TikTok with Chinese President Xi Jinping on Friday, Trump told NBC News on Saturday that he could activate a 90-day reprieve from the ban after he reclaims........

© International Business Times