Trends are available on the >x< for iOS app, the >x< for Android app, and x.com.
On >x<'s mobile apps, you can find Trends listed under the Trends section of the Explore tab when signed in to x.com on a desktop or laptop computer, Trends are listed in many places, including the Home timeline, Notifications, search results, and profile pages.
>x< Trends FAQ
Trending topics show popular posts and conversations on >x<. Learn how trends are determined, how to customize what you see, and how to post about trending topics.