When you want, you can long press the home button on an Android phone to bring up Google Assistant. Or if you're using Android 10 you can pull in from one of the lower corners. But if you don't use Google Assistant that often, you can change the app that opens with these gestures and get much more use out of it.
To test this, make sure you have Mozilla Firefox installed and then open in the phone's Settings app and use the search box at the top of the screen to find "Standard apps" (usually found in the "Apps" or "Apps & messages "). From the "Default apps" screen, select "Assist app", then "Assist app" again on the next page and select "Firefox" from the list.
Now press long on the home button or sweep in from one of the corners of the screen. Instead of Google Assistant, Firefox opens – in a new tab, with the address bar selected, and the keyboard open ready for you to enter an address.
The same method works with Samsung Internet, DuckDuckGo and various Firefox derivatives, such as as preview and focus. A huge omission is Google Chrome, but it's probably because Google wants people to use Google Assistant instead.
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