In order to use the Screen mirroring function, a mobile device used to deliver the contents and a device (Bravia® LCD TV) used to play back the contents must be set up.
・Xperia™*1 that supports screen mirroring
・Bravia® LCD TV that supports screen mirroring
*1 Compliant to the Wi-Fi CERTIFIED Miracast™ standard but connections with all devices is not guaranteed.
For details, see here