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How to use OK Google when the screen is off

use OK Google when the screen is off

Sure, keeping Google Assistant on all the time is not exactly great for your privacy and security. It puts you at constant risk of someone else unlocking your phone just by imitating your voice. They just have to say “OK, Google” when the screen is off and, voila, they have full access to your device.

But being able to activate Google Assistant at any time is so convenient. People are so used to communicating with their phones while their hands are busy that they don’t mind any security risks. And even though turning on the screen is a small extra step, it’s still an extra step.

How to use Google Assistant when the screen is off

So, unlocking your phone with the screen off should be as easy as saying “OK Google”, right? Wrong! It’s much more complicated than that. At least for some people. Because not all phones are created equal, and not all phones are supposed to allow you to unlock them with your voice.

If you’re lucky enough to own a device that natively supports voice unlock, the configuration process is as simple as it gets. You just need to enable the option to unlock your screen with Voice Match, and that’s it. But if your phone doesn’t support this feature, you can’t use Google Assistant with the screen off in the “right way”.

But which phones support this by default? Well, that’s hard to tell. Google’s own Pixel devices should have this feature, as well as some older Nexus phones, but I also managed to get it working on my Pocophone F1 without any shenanigans. You can also find various reports on the forums saying which phone supports it and which doesn’t. And Google not releasing the official statement also doesn’t help.

So, the only way to know if your phone supports OK Google when the screen is off is by checking the assistant settings. If you find the Unlock with Voice Match option in the settings, your phone supports this feature. If not, I’m sorry, but you’ll have to settle for other options.

Enable “Unlock with Voice Match”

For all you lucky ones who own a device that supports unlocking with Voice match, setting up this feature is straightforward. Here’s what you need to do:

  1. Go to Settings.
  2. Go to Google > Search, Assistant & Voice > Voice.
  3. Tap Voice Match.
  4. Enable the Unlock with Voice Match option.

use OK Google when the screen is off

That’s it. Now Google Assistant will listen all the time, even if the screen is off, and you’ll be able to unlock your phone with a simple voice command.

But if you don’t see this option, there’s no ‘real’ way around it. So, if you want to use Google Assistant when the screen is off, try some alternatives (if we can call them that) below. But keep in mind, these are far less convenient.

For unsupported devices, you can still select Lock screen in Assistant settings and choose to show lock screen results.

Android Auto

If you want to use Google Assistant with the screen off, there’s one unusual, less convenient solution that works. Android Auto allows you to use Assistant everywhere; it just needs to be running in the background all the time.

If you don’t have Android Auto pre-installed on your device, head over to the Play Store, and install it. Just set it up by allowing a few permissions and agreeing to a few terms, and you’re good to go.

As Android Auto is integrated with Google Assistant, and you shouldn’t be using your phone while driving, it allows you to interact with your device even when the screen is off. So, as long as you keep Android Auto running in the background, you’re covered.

The fact that Google Assistant is running through Android Auto doesn’t limit it one bit. You can still use all the commands and ask everything, not just for information about your “trip”.

The drawbacks are obvious here. First, the battery will drain faster with Android Auto running in the background. Then, Android Auto and Maps notifications will take a huge chunk of the notification drawer. And finally, you won’t be able to use Google Maps to the fullest.

use OK Google when the screen is off

You can tweak all this to some degree, to make Android Auto in the background as imperceptible as possible.

Although you can’t eliminate the battery drain, you can at least reduce it by optimizing Android Auto. Here’s how to do that:

  1. Go to Settings.
  2. Tap Apps & Notifications > Advanced > Special app access.
  3. Tap Battery optimization.use OK Google when the screen is off
  4. Find Android Auto, tap it, and choose Optimize.

Now that the battery usage is (to some degree) optimized, let’s declutter the notifications clutter. Pull down the notification drawer, and you’ll notice that Android Auto occupies more than half of the screen. Tap and hold each notification and choose Minimize. This will significantly reduce the space used by Android Auto notifications. They’ll still be there, but at least they won’t be as distracting.

use OK Google when the screen is off

In Google Maps, Google Assistant will constantly run in car mode. You won’t be able to get walking routes, commute info, and other stuff. So, if you’re, for example, on a vacation, exploring a foreign city on foot, I recommend turning off Android Auto.

Use OK Google when the screen is off on Bluetooth headphones

All wired and wireless Bluetooth headphones/earbuds support Google Assistant these days. This means you can use your Bluetooth earbuds to wake up Google Assistant at any time. While it’s not as convenient as speaking directly to your phone, it’s still better to take it out of your pocket every time you need to check the weather forecast.

In case your phone doesn’t support your earbuds’ hotkey out of the box, you need to allow it to interact with Google Assistant when the screen is off. Here’s how to do that:

  1. Go to Settings.
  2. Go to Google > Search, Assistant & Voice.
  3. Tap Voice.use OK Google when the screen is off
  4. Enable Allow Bluetooth requests with device locked in Google Assistant Settings.

You’re not supposed to do this anymore

After all of this, you may ask why Google and OEMs aren’t in general happy about this feature. Well, the reason you’re not allowed to use your voice for unlocking your phone is strictly security related. As I said above, voice unlock is probably the weakest security measure you can have on your phone, because it’s very gullible.

Anyone can try to imitate your voice. While the phone won’t unlock 9 times out of 10, it could be the 10th time. Despite all the efforts and recent big improvements, the voice-recognition technology is simply not advanced enough to distinguish your voice from others with 100% accuracy.

Because of that, Google decided to limit this feature for your own sake. And that makes sense, especially in the age when everybody is concerned about their privacy and online security. They went even a step further and now you can only trigger the Assistant and see personal results (if you choose to) but unlocking the device with the voice match is not an option anymore.

Users might still object. And I’m with them. Android is Android because of the freedom it provides. People should be able to do what they want, even if it means sacrificing a little privacy. After all, no one is completely safe on the internet today. So, why don’t give them a choice?

Editor’s note: This article was originally published in May 2019. We made sure to revamp it for freshness and accuracy.

Picture of Ivan Jenic

Ivan Jenic

Editor-in-chief at Mobile Internist. @ivan_jenic I founded Mobile Internist to help people understand technology better. And maybe solve some annoying problems. That's about it, cheers!
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