To begin, make sure your Android device and Roku are connected to the same wifi network. This is crucial for the screen mirroring process to work smoothly. Next, go to your Android device's settings and look for the screen mirroring or cast option.
On your Roku, go to settings and select system, then screen mirroring. Choose the option to enable screen mirroring, and your Roku will start searching for available devices to connect to. Select your Android device from the list, and you'll be all set!