Konstantin, a Mastodon researcher, warned that typing "":: into the Settings App's search bar can cause the iPhone Springboard to crash.
Users experimenting with the character sequence experienced their screens going black before resuming at a locked home screen, illustrating the bug's disruptive nature.
This bug is not a security issue but a glitch, highlighting a history of similar crashes caused by specific character sequences in previous years.
The phenomenon of crash-inducing character strings isn't new; prior examples show that symbols, characters from different languages, and emojis can lead to app failures.
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