You just assume it's stolen? I'm having the same issue...with a phone that I purchased for my son who apparently and unknowingly set up this option and has no idea what the pin is. He's been using the phone for 5-6 months and this is first time it's asked for pin to start Android and it's not the same as lock screen pin! So....there is just one example of how this could happen without stealing a phone, and there are easily dozens more. So, you yourself must be a dumb thief to instantly presume that anybody with this problem are dumb thieves....
Besides... Are you the cellular devise police or what? Who gives where or how someone gets a devise? Quit being an nerd and just answer her questions if you can.... And if you can't do it politely or professionally, leave it alone.
