A law that prohibits mobile app stores and internet hosting services from distributing the video-sharing platform to U.S. users takes effect on Sunday.

The White House said on Friday that Tiktok should remain available to Americans but the timing of the Supreme Court ruling on a law banning the app means it must fall to the Trump administration.

U.S. officials have long feared that the widely popular short-form video app could be used as a vehicle for espionage.

A lawyer for TikTok content creators on Friday urged the White House and the Justice Department to clarify to Apple and Google that they can continue to offer the TikTok short-video app in app stores on Sunday when a legal ban is set to take effect.

The incoming president said he will “most likely” give TikTok a 90-day extension called for in a law upheld by the Supreme Court yesterday to see it sold or banned by a deadline tomorrow. In a phone interview with Meet the Press moderator Kristen Welker of NBC News,

TikTok said it will be forced to go dark on January 19, the day the ban is set to take effect, without more assurances it won't be enforced.

White House Press Secretary Karine Jean-Pierre called TikTok’s threat to “go dark” tomorrow a “stunt,” and said there is no reason that TikTok or any other companies should take any actions under the ban before the Trump administration is sworn in Monday morning,

Trump spoke to NBC News' Kristen Welker in an exclusive phone interview Saturday, discussing his plans on what to do about the popular social media app.

U.S. President-elect Donald Trump said on Saturday he would "most likely" give TikTok a 90-day reprieve from a potential ban after he takes office on Monday, as the app with 170 million American users buzzed with nervous anticipation ahead of a shutdown set for Sunday.

TikTok released a statement hours before a U.S. ban goes into effect, notifying users services will be "temporarily" unavailable.

Donald Trump has arrived in Washington to celebrate with family, supporters and political allies ahead of his second inauguration.