If you tapped Hands-free mode, you’ll instead slide the Hands-free mode switch right.
Incoming call - Reads aloud the name and number of a contact who is calling you. Messages - Reads aloud the name of a contact who is messaging you. Alarm - Reads aloud the subject of an alarm when it goes off. Schedule - Reads aloud a scheduled item’s subject when it applies.
If you haven’t yet set up S Voice, first do so by opening the S Voice app from the App Drawer and following the on-screen instructions.
If your Samsung Galaxy isn’t a Verizon phone, this process won’t work.
If Message+ opens to a conversation, first tap the “Back” button in the top-left corner of the screen.
You can also slide on Auto-Reply, which will automatically reply to incoming calls or messages with a standard text that says something like “I’m driving right now. "