So, I have never really tried using PIN protection for unlocking the lockscreen before. I am now using the email app for corporate email forwarding and the server requires either a PIN or a password to unlock the phone. My issue is this: sometimes the phone request a PIN to unlock it, but most of the time it is still a standard swipe screen. And always when I hit the power button to manual lock the phone when I hit the power button again to access the unlock screen it never asks for a PIN. Not very secure. Does anyone else have this problem or is there a reasonable explanation?