Listening and replying to messages on IOS and Android works differently.
On an Iphone, just say hey Siri, or tap and hold the home button.
Then just say read my messages.
Once Siri is done recording you'll have the option to reply to the message or you can say, read the next one to keep going.
The same steps work for email, just say email instead of messages.
On an Android phone say okay Google or head over to the Google now screen and tap the microphone button Then say show me my last messages.
From there your phone will show you your last five messages and ask you if you want to hear them read out loud.
After each message is read you'll have the option to reply, repeat, or move on to the next one.
That's just one way Google now in theory can be useful.
But there are a lot more tips Available on C/net How To.
In San Francisco, I'm Sharon Profis, cnet.com for CBS News.