For the past 2 days I have noticed something weird with my iPhone 4s camera. Whenever I want to take a picture, I see these red pulsating vertical bars running across the screen. When I actually take a snap, the resultant picture will have these bars running across it. Sometimes these bars will disappear after a few seconds and then I can take pictures normally. On other occasions they persist and I can't take pictures without those pesky bars. I have tried powering off and then on again but to no avail. It happens to the ios5's default camera app and other 3rd party camera apps as well. What should I do?