To hear the message tone when you get a message, the message tone needs to be turned on.
Solution: Select message tone
1. Find "Notifications"
Slide your finger upwards on the screen.
Slide your finger upwards on the screen.
Press Samsung.
Press Messages.
Press the menu icon.
Press Settings.
Press Notifications.
Press the indicator next to "Show notifications" to turn on the function.
Press New messages ‹SIM›.
Press Sound.
Press the different message tones to hear them.
Once you've found a message tone you like, press the Return key.
Press the Home key to return to the home screen.