These steps will work to completely disable Google Assistant on most new Android systems (released in 2021 or later). Just follow the instructions below:

1. Open Settings from your application list.
   
   
2. From the list of available settings, select Apps & notifications. You’ll be redirected to a new page right away.
   
   
3. Tap on Assistant. You’ll find most of the settings related to Google Assistant here.
   
   
4. Scroll down and tap on the Say “Hey Google” option. The Google Assistant will default show up every time you say this phrase.
   
   
5. Make sure that the Google Assistant toggle is turned off. If it’s turned on, the toggle will be blue, and you’ll see various settings on this page. Just tap on the toggle once to disable it.
   
   

If you haven’t updated your Android system in a long time, you can use these instructions to disable Google Assistant:

1. Find the Settings application on your device. Most Android phones will require you to swipe up and select Settings from the list of installed apps.
2. Once in the Settings app, scroll down until you see Google in the list. Go ahead and tap on it once.
3. You’ll see a list of Google-related settings on your screen. Tap on Account services.
4. In the Account services menu, tap on Search, Assistant & Voice.
5. Select Google Assistant.
6. On the next page, switch to the Assistant tab.
7. Scroll all the way to the bottom of the page, and then tap on your device from the Assistant devices section. This will often be listed as simply “Phone” or “Tablet“, depending on your device.
8. If the toggle on the top of the page is turned on (showing up blue), tap on it once to turn off Google Assistant. That’s all!

This method will completely disable both the trigger words for your Google Assistant (such as “Hey Google”) and pressing the Assistant button in the middle of your home screen.

If you’re using an iOS device, you can disable Google Assistant by following these steps:

1. Open the Settings app on your iPhone or iPad.
2. Scroll down and tap on Google Assistant.
3. Turn off the Microphone toggle. This will disable the listening features of Google Assistant.