After adding two videos to VLC and one to the stock Videos app, my phone lost the Fingerprint ID, then began to lag on the Lock Screen. After hitting the Home Button, it has taken up to 30 seconds for anything to appear on the screen. At that point, I can only slide to unlock but have to wait another 20 seconds after inputting my Passcode to get into the phone. After that, everything functions as before. I deleted the videos in question, deleted a bunch more, cleared everything out of Safari, closed all apps, and reset the phone (Home+Lock Buttons). Temporarily, the lag time issues go away now until about three apps are simultaneously running -- at which time I have to repeat the above steps. However, no matter what, I have not regained the Fingerprint ID and cannot add a single fingerprint. In Apple's forums, there has been talk of software corruption happening when Fingerprint ID is lost. Note: only jailbroken apps installed are: BigBoss Icon Set, Cydia Installer, Cydia Substrate, Cydia Translations, evasi0n 7.x Untether, f.lux, ProTube, RushPlayer+, Substrate Safe Mode, 3G Unrestrictor 5 Any ideas on a fix? Is there a jailbroken diagnostic app to use to fix the bug?