Follow the instructions to train your phone to respond to your voice.You may also want to toggle on Unlock with Voice Match if you’d like to be able to use “OK, Google” even when your phone is locked. Tap on Voice > Voice Match, and turn on Access with Voice Match.Alternatively, you can go to Settings > Google > Search. Open your App Drawer and open the Google app, then tap the More (hamburger menu) in the corner, and go to Settings.

You’ll find more info detailed on the Android Developers blog. Oh and one more thing: Google Play Services 5.0 is also rolling out (which some suspect the hotword detection may be dependent on) and adds a crazy amount of new features including Android Wear support, new Play Games features, app indexing API, closed caption support for Chromecast, new Wallet features like split tender, and more. What’s more is the 3.5.14 update also introduces the new ability for the app to “learn” your voice for better recognition, a feature recently removed from Search but making a return as “ Google Audio History.” For those with Motorola devices, unfortunately it looks like the new system-wide hotword detection wont work on the Motorola Moto X, Motorola Moto G, or Motorola Moto E. It appears this is a new feature rolling out on a per-account basis, done on the server side of things. If you don’t see it immediately, don’t fret. You’ll first need to jump into your Google Settings and select Google Settings > Search & Now > Voice > “Ok Google” Detection and check “From any screen” to enable Hotword Detection from any app (even the lockscreen). Not enabled by default, we gave you the spiel earlier today.

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