First the Crashsafari bug, and now this – the Apple iPhone isn't having a very good time when it comes to keeping its defences up against bugs and glitches. A newly-uncovered issue is perhaps the most frustrating yet, and one that your wind-up mates can most easily exploit – with a simple clock change, your iPhone can be made useless.
The bug, being discussed on Reddit, sees iPhones become bricked if simply restarted once the clock has been set back to January 1st 1970. While Apple has yet to respond to the problem, it seems that the devices register a negative time value that the phone can't rectify by itself.
In fact, it's not only an iPhone problem – any Apple device running the 64-bit iOS 8 and iOS 9 software off an Apple A7, A8, A8X, A9 or A9X processor are vulnerable. That takes in everything from the the iPhone 6S, 6S Plus, iPhone 6 and iPhone 5S, through to the iPad Air, iPad Mini 2 and iPad Pro.
The devices can go into Recovery Mode, meaning it's not an irreversible problem, but will require a trip to an Apple store for any chance to fix it. Check out the bug in action in the clip below. [9to5Mac]