A:Answer It's the Google Assistant that allows you to use your only your voice to text and call. I use it everytime I call my mom - once I have the assistant's attention (by touching my Pixel buds or saying "hey Google"), I just say "call Momma" and it does! There are many other features that can be accessed by the Google Assistant, I don't use them all, but I do utilize the morning routine where I say "good morning" once I get the assistant's attention. That routine includes it turning up the volume, telling me the current temperature, forecast for the day, events on my calendar, turning off my humidifier, and playing the news from 3 sources I have chosen. I imagine there are several routines that once created could be very beneficial to you.