iPhone asking for new passcode
I have a iPhone 6 running on the iOS 9.3.1 and i just got a popup notification telling me i had 60 minutes to change my passcode. I have never seen this before on any iPhone that I've owned. Is this normal? Why is it all of a sudden asking me this? It stopped asking after i turned the passcode off and back on.
iPhone 6, iOS 9.3.1