Why isn't my LG G3 headphone jack working?

A

AC Question

I had got my LG G3 sometime near the end of 2014, and in P.E. class while I was listening to music, the phone stops recognizing the headphones and starts playing music through the speaker. I thought the headphones were broken, but I tested them on several other phones from my classmates and they worked fine. Only when I plugged headphones into my phone was when nothing would happen. I don't get an icon on my phone, no small beep to know they're connected, nothing. It's been a while since and I can't find anyone who knows the problem.
 

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