Hi, did you manage to fix yours? I fixed mine by pulling the gold conductor inside the headphone jack slot (it looks like it bent with such force pushing the jack) with a curved pin.. turn your phone upside down and
back casing LCD* facing you.. look inside the headphone jack slot with a flash light, right side in my case, you will notice the gold conductor not in place. Here i'll show you a diagram made by me. Sorry for the awful drawing.
Take a look at the awful drawing, you see the red line, that should be the place of the bent gold conductor. I inserted a sewing thread, shaped it like "U" and gently pull the gold conductor up, i used also a curved pin to help the string.. after that it slightly in position now, i took a paper clip and flatten the tip so it will not slip if i push the conductor in place. if you are satisfy with the placement of the conductor, you can now try to insert jack gently. Profit. Sorry for my bad english. Enjoy.
Edit: I meant LCD facing you and not the back.