My iPhone 4 home button is becoming unreliable. Sometime it works okay, sometimes it works after I press it about 4 or 5 times, sometimes it only works if I press and hold for a second or so. Today was the first day when I couldn't get out of an app. Had to shut down and restart the whole thing. I may not be able to hold off till mid-September for an iPhone 6. I'm assuming it's a physical problem with the button. Anybody heard of a miraculous fix?