See if a hard reset/restore does the trick. If not, you might have to drop by the Genius Bar and get it replaced if you're under the 1-year warranty or with AppleCare since it's a hardware issue last time I checked.
See if a hard reset/restore does the trick. If not, you might have to drop by the Genius Bar and get it replaced if you're under the 1-year warranty or with AppleCare since it's a hardware issue last time I checked.