A bug in iOS has meant many people have ended up with a ‘bricked’ phone after falling for an online prank, offering a retro iOS Easter egg.
Setting an iOS device clock to midnight on 01/01/1970 ends up in a divide by zero error – resulting in an un bootable device.
It’s believe to be caused by the fact the time is stored on the device in GMT, then an offset applied of seconds since 1970, depending on your location. As the above essentially sets the devices clock to zero thus causing the error.
There’s no “Easter egg” of a retro apple symbol in the OS. So don’t risk trying to find it, unless you’re short of paper weights.
EDIT: A video has since been published on YouTube explaining how to fix your phone should you have fallen for this “trick”