What happens on your smartphone once a US law banning the social media app TikTok takes effect on Sunday? It will depend on the actions of TikTok parent ByteDance, President Joe Biden, President-elect Donald Trump,

TikTok has announced that it will cease operations in the U.S. on Sunday, unless the Biden administration provides assurances to tech giants.

The United States Supreme Court on Friday ruled against TikTok's bid to avoid a ban that could shut the app down in just two days and impact millions of users who rely on the platform for entertainment,

The U.S. Supreme Court ruled against TikTok on Friday in its challenge to a federal law that would have required the popular short-video app to be sold by its Chinese parent company ByteDance or banned in the United States on Jan.

Parents in Maryland said a school board’s refusal to notify them and to excuse their children from discussions of the storybooks violated the First Amendment.

The decision came a week after the justices heard a First Amendment challenge to a law aimed at the wildly popular short-form video platform used by 170 million Americans that the government fears could be influenced by China.

Justices reject the Chinese app’s First Amendment challenge to a federal law against “foreign adversary” control.

"Unless the Biden Administration immediately provides a definitive statement to satisfy the most critical service providers assuring non-enforcement, unfortunately TikTok will be forced to go dark on January 19," the company said. The White House declined to comment.

The outgoing head of the Federal Communications Commission said a massive Chinese-linked cyber-espionage operation against U.S. telecoms firms known as "Salt Typhoon" is a "clarion call" to address significant telecommunications security issues.

Experts have indicated that common workarounds, such as VPNs, may not be effective due to the app's ability to detect user locations through geolocation data.

TikTok’s future hangs on a Supreme Court battle taking place on Friday. The social media giant and its parent company, ByteDance, face off against the US government in a hearing to decide whether the Chinese company can maintain control of the popular US app.

This potential ban is being challenged by TikTok on First Amendment grounds, with the company referring to it as an "unprecedented censorship" for the over 170 million Americans who use the app. The Supreme Court's decision could have significant repercussions for stocks such as Meta (NASDAQ: META) and Oracle (NYSE: ORCL ), among others.