I've been using Spotify on my iPhone and I've noticed that some Spotify playlists have a big green button that says either "Shuffle Play" which shuffles all the songs int he playlist or "Play" which plays the playlist from start to finish.
My question is: how do I shuffle playlists that say "Play" on them? There doesn't seem to be a button or an option and doesn't seem to be any consistency on what playlists are automatically shuffled and which are not. (I've seen one Spotify-made playlist that says "Shuffle Play" and another Spotify-made playlist that has "Play" on it). I've attached screenshots to show what I'm seeing on the "Play" playlist.