Samsung has the Bixby button, pixels have the Google Assistant squeeze gesture. It's nice to have a hardware button just for your assistant, so you do not have to say "Ok Google" or press a screen key. If your phone does not have such a link, you can remap an existing hardware button to trigger the Google Assistant.
There are many benefits to using a dedicated Google Assist button. For example, if you have many Google devices nearby, you can trigger the right device by pressing the hardware button. Maybe you just hate saying "Ok Google" and want an alternative way to trigger the wizard outside of your current methods.
: Download Button Mapper
The best app to get one of your buttons to open the Google Assistant is Button Mapper. It was created by one of our favorite developers, flar2, AKA Aaron Segaert. The app is constantly updated and should therefore be compatible with most Android devices.
Step 2: Enable the accessibility service.
Start the Mapper App button and swipe left to pass the first two screens. If you want to "get started!" Tap "Open Settings" on the screen, then select Button Mapper on the following page. From there, activate the toggle switch next to "Use service" and tap "Allow" when prompted and return to the app. With this accessibility service, the app can change what actions your hardware keys take.
In the main Map Buttonper window, select a hardware key that you want to use to start Google Assistant. All available buttons on your device should be listed under the heading buttons . Then, at the top of the next screen, turn on the switch next to "Customize."