Most of the time audio playback issues arise from the files format not being supported, however it can be due to several other factors, let us help you discover the issue and solution.
Note: Some Settings, Menus, or Icons may differ from that of your device depending on your software version and wireless service provider.
Ensure the audio files format is supported (see table below). If your file format is not supporter, look for an audio converter and turn it into a supported format.
Ensure your volume is turned up or that your phone is not on mute.
If using a headset, or speakers, ensure they work with another input.
Try a different headset in case the headset jack may be damaged.
If using a bluetooth connection, remove and repair.
If you are not able to transfer / download the audio file on your phone, ensure you have available memory space.
If you are streaming the audio file, ensure you have sufficient data.
If your music is on your SD card, Remove and reinsert the SD card if it still doesn't work, back up your information, format the SD card, reload the files and try again or try a different SD card.
Power the turn the phone off and power it back up.
Clear the cache on Music app.
Try using a different music app.
Android Supported formats:
DRM protected AAC (.m4p)
Feature Phone / Basic Phone Supported formats: