An iPhone bug lets you crash the interface with just four characters

Macworld

First reported by TechCrunch, a mobile security researcher found that you can crash the iPhone’s interface by typing four characters in the search field.

Just swipe over to the App Library and type “”:: into the search field (that’s two double quotation marks and two colons). The iPhone interface will reset. Further testers have clarified that you need only type the first three characters, and then the fourth character can be anything.

This is sort of a “soft crash” as it were.