I traded my phone with someone and they gave me an iphone and started having problems with callers hearing me so i took it to Genius and they swapped it out. I noticed the cord well the part that plugs into the iphone looks different than my other ones and it fits but not as easy as other cords I'm used to. Could this have damaged the phone? I hope not because I used it by accident to plug the new one in because they all look the same. 