Millions of TikTok users in the United States are no longer able to watch videos on the social media platform as a federal ban on the immensely popular app takes effect.

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.

Users on the app were saying their goodbyes, some filming themselves frantically scrolling or sharing final secrets with their followers ahead of the possible ban.