Why are our mini-computers called smartphones?

[AFTT47]

Like..to talk to people?  With your voice?  Doesn't it have text? 

I can't talk shit tho.  My wife handed me an iphone last week..first phone I've had since I was a teen.  She didn't ask, just handed it to me.  Here's your phone, this is your number, call me.

I hate texting.  My wife was texting with my son and I'm like "Why don't you just fucking CALL HIM?!"

I draw a blank on that as well. People on both ends are using a device capable of voice communication and they're using a far less-efficient way to communicate instead. I don't get it.