Samsung's 5th-generation Android-based Galaxy smartphone was released April 11, 2014. Improvements to the phone include a fingerprint scanner, updated camera, larger display, and water resistance. It is available in four different colors; black, blue, white, and copper.
Need to check the obvious first; is the volume turned up? are any silence or "do not disturb" features activated? If not, the problem would likely be either software or the speaker itself. Is there any physical damage, or liquid damage?