A:Answer As of 2015, Samsung have stopped implementing MHL in their flagship Galaxy smartphones and tablets.
The Galaxy S6, S6 edge, S6 edge plus, Note 5, A3, A5, A7 and A8 do not have MHL capabilities.
In order to share your screen contents to a TV or other monitor, you will need to use a wireless connection.
This can be done through Miracast or with the Google Chromecast.