If your game does not have sounds or music, first check from the Settings menu if the sounds are enabled.
If you are certain the Settings are correct, stop the game running from the background and restart it. This refreshes the game and cancels out any interference you may have had from phone calls, voice messaging or other reasons.
_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-
The Walking Dead: No Man’s Land GUIDE