Why isn’t my left earphone working?

Also look here:

If your headphones don't work with your iPhone, iPad, or iPod touch - Apple Support

niamhfromstockton wrote:

I tried all of my Apple headphones and it’s always the left one that doesn’t work so I plufged them into another device and it worked fine so what’s wrong with my iPhone?

Try going to Settings>General>Accessibility>Hearing. Make sure the Left-Right balance slider is in the middle.

I thing that your headphone jack isn't working for left channel.

Could be the connector. Could be the song. Have you tried that song on another device to make sure it was mastered in stereo and not just one channel?

just a way to rule issues in or out. If the song plays in stereo on another device, and with those apple headphones, then it’s maybe a setting on the ipod or the plug on the ipod that’s wrong, becuase you’ve rules out the headphones as having the issue and ruled out the song as having the issue

I used to have this problem with my iPod Touch 2g but the iPod fixed it on it’s own🤔🤔🤔🤔