As the retina iPad mini is getting in to more hands, there have been limited reports of the device’s display suffering from image retention.
Image retention, or ghosting, is an issue that certain LCDs can have. It is usually associated with newer panels, such as the one in the retina iPad mini, though it has also been seen on the first-generation retina MacBook Pro and the third-generation iPad.
Marco Arment was among the first to report the issue, and he put together a web page to test the problem. Since image retention isn’t specifically covered by the warranty, it is likely to be hard to get the device replaced — you could, however, exchange it for another color or capacity.
Luckily, the issue seems limited to a very small number of devices, with most people reporting on Twitter and in forums that their devices do not exhibit this behavior.