Apple is offering to repair at a reduced price iPhone 6 Plus smartphones with display flickering or multitouch issues.

The problem, described in August as “touch disease” by repair guide website iFixit, is characterized by a gray, flickering bar at the top of the display and an unresponsive touchscreen. The issue affects both the iPhone 6 and the iPhone 6 Plus, according to iFixit.

Apple appears to consider it a problem with the way users handled the phone rather than a defect. It said Thursday that the company has determined that the smartphones may exhibit display flickering or Multi-Touch issues “after being dropped multiple times on a hard surface and then incurring further stress on the device.”

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