A while ago I made this blog post and forgot to post it here. I hope it helps.
I didn’t bother to describe what’s shown in the pictures but I can try to recall and add some notes if you’d have specific questions.
At least it describes that it’s not too hard screwing apart and back together the device. Of course some soldering skills are required.
I think this might not only help with the phones jack socket but also other sockets or pots.
Get back to me with questions here and again. I hope it helps!