Left apple earphone not working
I’ve only had my new iPhone 7 for about 3 months and yesterdya my left earphone stopped working, I’ve turend my phone off and on and it’s still not working can I take my ohone back to Optus and get a new pair
Possibility that your headphones are damaged are high. Try using another headphone and see if it works fine. If it works fine, get yourself a new pair of headphones. If it doesn't work well even with another headphone, possibly there is a problem with the headphone jack. Take your phone to the nearest Apple Store to get it fixed.