When a device has touch disease, it becomes unresponsive to touch. For instance, when you go to tap on your favorite app, it will not open. No matter what you do, it will not respond to your touch.
This issue has been brought up to Apple many times, but they are hesitant to admit to the problem. Even after having a class-action lawsuit brought against them, they are not coming forward with a public acknowledgement for the faulty screens.
The touch disease issue is not one that only a couple people have experience. It’s already accounted for as much as 11 percent of Apple store repairs. This is a rate already higher than other types of repairs – yes, even cracked screens.
How to Detect the Problem
Touch disease often starts with a gray bar across the screen. After a short time, users report the screen become unresponsive to touch. Experts believe it may have something to do with the logic board on the device. When the device is taken out of the pocket, dropped, or slightly bent in some other way, the logic board malfunctions.
Contact Apple immediately if you believe you are experiencing “touch disease.” They will fix it or replace depending on whether they are able to return it to original functioning.