MHL (Mobile High Definition Link) technology allows mobile devices with the appropriate interface to display content on High Definition TVs and displays. The Lindy MHL to HDMI Active Adapter allows you to show audio and video up to 1080p recorded or stored on a mobile device such as a smartphone or digital camera on a HDTV. The additional USB Micro B port also allows you to charge and power your device while viewing your content, playing games, streaming video or surfing the internet.
A list of MHL compatible mobile devices can be foundhere.