The so-called "touch disease" causes the screens on some iPhone 6 Plus units to become unresponsive. In some instances, users will see a series of grey bars appear near the top of the screen as well, as Motherboard explains. '
The problem is said to be caused by the same internal engineering flaw that caused some iPhone 6 Plus phones to bend. As such, the issue can't be fixed by simply buying a new iPhone 6 Plus or replacing its screen.
Apple says on its website that it has "determined that some iPhone 6 Plus devices may exhibit flickering or Multi-Touch issues after being dropped multiple times on a hard surface and then incurring further stress on the device."
Those who have an affected iPhone 6 Plus that is in otherwise working condition with its screen intact are eligible for the repair program. iPhone 6 Plus owners who have already paid for a service repair through Apple or one of its authorized service partners will receive a reimbursement that evens out with the new $149 price.