YouTube is starting to test out its queueing system on iOS and Android. The feature has been available on the web for years now, and shows in the YouTube apps under certain circumstances — users who control their Chromecast with their phones might recognize it, as will those who use the YouTube Music apps — but now YouTube Premium users who opt-in to the test will be able to add videos to a stack that acts like an impermanent playlist.
After you turn on the feature (which we’ll cover how to do in just a second), you’ll have access to a new “Play last in queue” button in the three vertical dot menu that appears on video thumbnails. Tapping it will add the video to the bottom of your queue — or will create a new queue if you’re currently…