I use my phone at work everyday to listen to music. Today while working the cord to my headphones got stuck quite hard, and somehow managed to damage the headphone jack in my Lumia 920. The cord must have damaged something inside the jack, because I can only hear on one ear now, except for if i manage to pull the cord in exactly the right spot, while keeping pressure on the cord in the right direction. I'm certain that the headphones are not broken, as i tried connecting another pair to the phone with the same problem. Is this something i could be able to fix myself? If the jack got loose inside or something, could i open up the phone and try to pinch it or something to make it work? Or can i buy a replacement 3.5mm jack?