원문 게시자: Guy ,
The problem is that you may have dropped your mobile device multiple times. I've dropped mine and I am pretty sure the buttons were just moved arround, causing the phone to malfunction. An easy but not always working way is to reboot your phone. Simply hold the power button and the home button to reboot. If this does not work, try asking a apple employee to conpletely dismantle your phone and tebuold it. Or you can just upgrade your phone.