Hi All My iPhone 4 has a strange problem. (Ok, to be precise, my girlfriend's iPhone has a strange problem and since I'm the nerd with the skirt in the relationship, I have to do the research!) When she makes calls on the phone, she can't hear anything. This happens regardless of using ear phone, normal mode or loud speaker mode. However, the sound does come through, when she presses the corners of the phone. This tells me that there is some loose connection somewhere. Funny thing is, the sound on all the other apps works i.e. Skype, music, video etc. Before anyone recommend me to take it back to iStore, she got the phone from the States and we live in South Africa. iStore doesn't cover the warranty and "geniuses" here are too afraid to open it up. I am willing order spare parts and replace them myself but I have no idea which parts to order. Can anyone tell me which part of the phone might be defective and need replacing? Has anyone got similar issue? None of the results I found on the net has not been helpful thus far. Thanks is advance.