TechCrunch reports [techcrunch.com] on a lawsuit being brought against Apple by owners of the iPhone 6 and iPhone 6 Plus who say a design defect causes the touchscreens to become unresponsive. The loss of responsiveness is often preceded by a flickering gray bar appearing across the top of the screen. iFixit [ifixit.org] discusses a few possible sources of the "Touch Disease" problem, with the most popular theory being that the Touch IC chips lose contact with the logic board due to the phone bending.