What is RCS and what makes it better than SMS?

SMS has been with us for over a quarter of a century and it wont go away anytime soon. But its really showing its age and many have moved to instant messaging WhatsApp, Viber, WeChat, Line, KakaoTalk for the convenient features these apps offer over plain SMS.

Recently Google has started (with the help of carriers) to push RCS Rich Communication Services. If we had to describe it in three words they would be iMessage for Android.