The app had more than 170 million monthly users in the U.S. The black-out is the result of a law forcing the service offline unless it sheds its ties to ByteDance, its China-based parent company.

After hearing arguments on Friday morning, the U.S. Supreme Court decided to uphold the law, meaning that TikTok will be banned effective if the parent company ByteDance does not sell the company by Sunday.

The Supreme Court has unanimously upheld the federal law banning TikTok beginning Sunday unless it’s sold by its China-based parent company.

TikTok, ByteDance and several users of the app sued to halt the ban, arguing it would suppress free speech for the millions of Americans who use the platform.

The U.S. Supreme Court officially upheld the law to ban the TikTok social media app on Friday.

Experts have said the app will not disappear from existing users’ phones once the law takes effect Sunday, but TikTok said it would shut down the platform in the United States by the deadline.

With the ban upheld by the Supreme Court and the Biden administration leaving, TikTok CEO Shou Zi Chew is banking on Trump to save the app in the US.

Shou Zi Chew thanked the incoming president for efforts to "find a solution that keeps TikTok available in the United States."

TikTok CEO Shou Chew on Friday thanked President-elect Donald Trump for supporting the company's efforts to remain available to U.S. users. In a video posted to TikTok, his first public statement since the Supreme Court upheld a law banning the app just hours earlier, Chew praised Trump's recent support.

Droves of self-described "TikTok refugees" migrated over to other Chinese apps, specifically Lemon8 and RedNote.