I keep setting up a PIN to unlock my screen. It works a few times, maybe 3 or 4, then stops. My phone reverts to merely having to swipe the screen to unlock it. I will then again setup a pin to unlock the screen, it will work a few times and then the phone reverts to no PIN required for screen unlock.

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    Is it rooted? Stock ROM? – Aaron Gillion Feb 27 '16 at 23:49

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