The speaker on your device may be broken. If this is a headphone problem, you may have dust in your headphone jack or the head phone jack may need to be replaced.
+
If this is a headphone problem, you may have dust in your headphone jack or the head phone jack may need to be replaced. If the device is not on mute and the volume is turned up yet the sound is still not working properly, you may have to replace the speaker.
The speaker on your device may be broken. If this is a headphone problem, you may have dust in your headphone jack or the head phone jack may need to be replaced.