With Google Assistant pre-installed on any Android phone (and Siri on iPhones), you should think you already have all tools at your disposal when you want to yell at your phone to control your audio playback. However, Spotify seems to think that it needs its own solution. App reverse-engineer Jane Manchun Wong managed to activate a hidden settings panel in the music app that will let you enable a "Hey Spotify" feature you can use while the app is open and on your screen.

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