Ever since the iPhone 4 launched in an orgiastic explosion of fanboy love and press insanity, we’ve been hearing things about ‘the antenna problem’ – an issue in which holding the phone in a particular way may or may not cause the phone’s signal to drop, and may or not be the reason for a kitten being mistreated on the other side of the world. Less reported, however, is an issue with the phone’s proximity sensor, which detects when you hold that beautiful glass display up to your sweaty, greasy ear so that it can shut it off, thereby preventing your ear from doing things your finger would never dream of….