So called Touch Disease may be a problem for iPhone 6 Plus


iFixit is tracking an issue with the previous generation iPhone's screens. The issue, which they dub Touch Disease, affects the iPhone 6/6 Plus. The problem may be primarily with the larger iPhone 6 Plus.

Essentially the top of the screen goes dead with no display and an unresponsive touch screen. The issue appears to go further than a bad screen and have something to do with the logic board or embedded chips.

iFitxit:

After fixing hundreds of broken iPhone 6 and 6 Pluses, many pros have developed theories about what causes Touch Disease in these two specific models. One microsoldering pro I spoke to speculated that the U2402 Meson chip--one of the two Touch IC chips on the board--has a manufacturing defect. But the most popular theory I heard is that Touch Disease is the unanticipated, long-term consequence of a structural design flaw: Bendgate.

Back when the iPhone 6 and 6 Plus were first released, some owners discovered that the large, wide phones had a nasty habit of molding themselves to the shape of your rump if left too long in a back pocket. The phenomenon, known as Bendgate, was ostensibly put to bed when Apple apparently strengthened weak points in the rear case of the iPhone 6s.