This mapping isn't correct. Hangouts does all of the above - video chats, voice chats, text with emojis, pictures and videos. Hangouts is also integrated with

This mapping isn't correct. Hangouts does all of the above - video chats, voice chats, text with emojis, pictures and videos. Hangouts is also integrated with Google Voice and GMail. So when someone calls my GV phone number, it rings on my cell phone and in any open GMail tab (but not in the GMail app). I get an SMS, it pops up as a hangouts message too. It is a mess, but trying to kill Hangouts is insane, it's deeply integrated and it's extremely convenient to use.