Open your device settings
Go to Apps or Applications
Select Default apps or Manage default apps
Tap Browser app or Default browser app
Choose the browser you want to set as default
If needed, open your current browser and change its default browser setting from its own settings menu
On Windows, go to Settings > Apps > Default apps > Web browser
On Mac, go to System Settings > Desktop & Dock > Default web browser
On iPhone, go to Settings > the browser app > Default Browser App
On Android, go to Settings > Apps > Default apps > Browser app
Restart the device if the change does not take effect immediately