How can I stop voice talk on messages

It's possible that it is on hands free mode that will be in your settings .most likely to be under device section. Scroll down it should there. And if you have it on then you can turn it off or if you have it on then do this .Hold the volume button on the phone the slider bar will pop up on screen keep holding look there you will see a icon like gear let go volume push the icon you can operate all sounds of the phone media, notification s, ringtone,,phone hope this helps.