The 1970 iPhone Bug was a bug similar to Fontal in iOS 8.x and 9.x that prevents your iPhone from turning on after restarting, as it will constantly reboot. This issue does not appear in iOS 7 or earlier, and only affects iPhone 5S and higher (it does not affect iPhone SE or higher, as it comes with iOS 9.3 pre-installed) and iPad Air/Mini 2 (64-bit devices). However it is not considered malware, but a bug. This can destroy and completely brick your iPhone and make it useless, or even worse.