To mirror your Android device to a Vizio TV without WiFi, you can use an HDMI cable and an MHL adapter, provided that your Android device supports MHL output.
Here are the steps to follow: Check if your Android device is compatible with MHL output. You can do this by checking your device's manual or searching online.
Purchase an MHL adapter that is compatible with your Android device. Connect one end of the HDMI cable to the MHL adapter, and the other end to an available HDMI port on your Vizio TV. Connect the MHL adapter to your Android device.
Switch your Vizio TV to the HDMI input that you connected the MHL adapter to. Your Android device's screen should now be mirrored on your Vizio TV. No WiFi is required when using an MHL adapter to mirror the screen of your Android handset to your Vizio TV. To mirror your device's screen, you might need to buy a separate adapter or use a different technique because not all Android devices enable MHL output.