Nahum looking at the teardown I do not think that your sim card slot is replaceable. It looks like it is a solid part of the logic board [guide|3641|page=3] my best advise would be to disassemble it and see if you can get the pins straightened out if bend and to see if you can get the mechanism fixed.Of course do NOT do it if your phone is under any kind of warranty. Could be a case for Nokia carepoint. Just my 2 cents....Good Luck