A message reading "Sorry, TikTok isn't available right now" is displayed from the TikTok app on a cell phone screen Saturday, Jan. 18, 2025, in Nashville, Tenn. (AP Photo/George Walker IV)

A TikTok app is shown on a phone in San Francisco, Friday, Jan. 17, 2025. (AP Photo/Jeff Chiu)

The logo for TikTok is displayed on a mobile phone, Friday, Jan. 17, 2025, in Denver. (AP Photo/David Zalubowski)

This screenshot from a cell phone displays a message from the TikTok app reading "Sorry, TikTok isn't available right now" on Saturday, Jan. 18, 2025, in San Bruno, Calif. (AP Photo/Stephanie Mullen)

FILE - President Donald Trump talks to reporters while in flight from Billings, Mont., to Fargo, N.D., Sept. 7, 2018. (AP Photo/Susan Walsh, File)

A message reading "Sorry, TikTok isn't available right now" is displayed from the TikTok app on a cell phone screen on Saturday, Jan. 18, 2025, in Los Angeles. (AP Photo/Andy Bao)

A TikTok logo is shown on a phone in San Francisco, Friday, Jan. 17, 2025. (AP Photo/Jeff Chiu)

A TikTok app is shown on a phone in San Francisco, Friday, Jan. 17, 2025. (AP Photo/Jeff Chiu)