Gotta love when Apple derps and I find a bug that hasn't been fixed since iOS 7.0. Small and harmless, but it IS a bug nether-the-less. A link to the video I made to show the problem occurring. Here are instructions on how to recreate it. See if it works for your iOS devices and let me know! I have an iPhone 5 running iOS 7.0.4. 1) Press sleep/wake button to view the lock screen. 2) Slide the camera pane upwards towards the top 1/4th of the screen. 3) Keeping your finger on the top 1/4th mark, hold down the home button to activate siri. 4) When siri has been activated, release both fingers and hold down the sleep/wake button until the power down screen is shown. 5) Press the home button. This should bring the camera application into view. 6) Press the cancel button on the power down screen. 7) Press the home button. You should now exit the camera application and be back in the lock screen. 8) Try entering your passcode and logging in as normal. The device can still be asleep and the bug will still work in this state. 9) When the phone is unlocked, the iPhone should stall at the home screen and flash white and restart.