Will Apple replace a phone if they break it?


Oct 11, 2010
Livingston, Ca
I took my 3GS to Apple this morning to see if they could fix the sim card slot because it's not reading the sim and they placed my brothers sim card in it to try and fix it but with no warranty they said I would have to by one for 149 because they can't repair it. I left the store with out taking the sim card out of the phone then we realized the sim was still in the 3GS so we tried to pop open the sim slot and it won't open.
Idk If it's broken but it was sliding out perfectly fine before I took it to Apple.
Will they replace or repair it for free ?I've already made an appointment with them tomorrow.