But on Sunday, TikTok has returned for some users in the US “in agreement” with its service providers, the company said. A pop-up displayed within the app thanks users for their patience and says its restoration comes “as a result of President Trump’s efforts.”

"TikTok and ByteDance Ltd. apps are no longer available in the United States, and visitors to the United States might have limited access to features," Apple said.

The company said in a statement that TikTok was coming back online in the U.S. after President-elect Donald Trump provided assurances to the company’s service providers.

The app’s availability in the U.S. has been thrown into jeopardy over data privacy and national security concerns.

Trump announced the decision in a post on his Truth Social account on Sunday as millions of TikTok users in the U.S. awoke to discover they could no longer access the TikTok app or platform.

Some users saw the social media app come back online on Sunday, following a shutdown when a federal law went into effect requiring a sale or ban.

Trump announced the decision in a post on his Truth Social account as millions of TikTok users in the U.S. awoke to discover they could no longer access the TikTok app or platform. Google and Apple removed the app from their digital stores to comply with a federal law that required them to do so if TikTok parent company ByteDance didn't sell its U.