The only reason I mentioned Exchange, is because they can control the status of the passcode, however it seems that you didn't have that. So let me make sure I understand it correctly. You go to Settings, General, Passcode Lock. The Simple passcode switch is on, but passcode is off. You go to the top of the page and tap on Turn Passcode On. When you do that, does it allow you to enter a simple passcode, or is that when the Simple switch turns off? Does it require a Strong passcode to be entered then, or does it just go back to the Passcode Lock page?
Yes, it allows to enter a simple passcode, but when I set it and get back the passcode settings page simple passcode goes to off state again and next time when I want to unlock my phone it asks my 4 digits with fully keyboard instead of numeric.
So it means that I can not switch on simple passcode but strong even if I stand on my head too...
I've already tried it on another phone (our compan phone) and it works flawlessly as it should, but mine... makes me crazy.
Thanks for your reply in advance!