SE V640(i) unlock problem

[prider]

Tried it, nothing happens...I'm guessing it's because I have some problems with the phone slot(where the cable comes in)...headphones are a problem because they work fine only in one position and when I listen to music with headphones I have to keep the phone still so the cable doesn't move in the slot...also, when I connect it through the cable to the PC I have to push a little harder and if I move the phone while connected it usually disconnects :(. But still, I tried for n*n times, nothing happens, I'm guessing it should work at least once...and after I connect it, after I remove the cable, the "unconnect device windows sound" is heard.
The only time I do not have problems while connecting something in the phone slot is when I recharge...I can move it, pull it, the phone keeps charging...i'm guessing it's because the metal pins from the connector differ.