Check if your Fire TV can screen mirror. To check, hold down the Home button on the Fire TV remote. If you see a Mirroring icon, your device is compatible. Connect your Fire TV and the device you want to mirror to the same Wi-Fi network.
Why doesn't My Fire TV have screen mirroring?
If the option “connect to a wireless display” is not present, then you may have to do a Windows 10 update or make sure that Fire TV stick's screen mirroring feature is enabled. The advantage of using a desktop for screen mirroring is that you can use the TV as an additional monitor without using any physical cables.
Which Fire TV has mirroring?
The screen mirroring feature allows the users to mirror the screen of any compatible device onto their television. To use the new screen mirroring feature on the Amazon Fire TV Stick 4K (Review), users will have to press and hold the Home button on the Alexa Voice Remote, and then select the mirroring option.