Maybe the headphones port does work, but the volume level is very low. Try turning up the volume and test if you can hear anything through the headphones.
If the volume is already turned up, but the speakers doesn't produce sound, check out the other solutions.
Sometimes, this is the only thing you need to do in order to make the device recognize the headphones.
Maybe the headphones port of your device is clogged with dust. In order to clean it, you will need a cotton bud (cotton swab) and rubbing (isopropyl) alcohol. Put a small quantity of isopropyl alcohol on the bud and gently insert it in the headphones port. If the swab gets dirty (once you take it out), repeat this process until the cotton bud is fully clean.
Wait a few minutes before plugging in headphones, so that the alcohol inside the headphones port evaporates.
Your device won't recognize the headphones if they aren't properly connected. Make sure to push them to the end of the headphones port, but in a gentle way.
Note: If you use a protective case, remove it temporarily, because it might be the one preventing your headphones from being attached to the device firmly.
If this problem is caused by an app you installed on your device, all you need to do is to uninstall it.
See the don't know how to uninstall a program / an application guide to learn how to uninstall apps.
Maybe the headphone issue you experience is part of the latest operating system update. In order to resolve the issue, you need to apply the update. You should be notified once an update for your device is available, however, this is not always the case.
See the don't know how to update my device's operating system guide to learn how to check for updates, manually.
If you don’t receive the email in the next 2 minutes please check your junk folder, and add [email protected] to your safe sender list.