A serious iOS bug has been discovered by Zach Straley and can brick your iPhone. This bug is activating when you set iPhone's date at 1/1/1970!
Bug affects iPhones with CPU A7, A8, A8X, A9 and A9X. Although this is not something the average user does, many people tried it and as result, their phone bricked. When this happens, phone is stuck in the screen with Apple's logo.
The only solution is to remove the battery, so your phone resets its settings and you can watch a tutorial below.