Chosen Solution
So since last month my headphone jack has been a real pain in the ass! Sometimes it works sometimes it doesn’t and sometimes only one headphone works and it’s really frustrating trying to get it to work! So what I try to do when it doesn’t work is restarting my phone which sometimes work but most of the time it doesn’t! I’m great full for any help!
Does it plug in fully? It’s probably dirty and needs to be cleaned. Otherwise you will need to change the charger port dock connector assembly. You can get the part from here: iPhone 5c Lightning Connector and Headphone Jack Guide to replacing the part: iPhone 5c Lightning Connector Assembly Replacement
