79 votesAdminMicrosoft (Admin, Microsoft) responded
The app respects a user’s mobile device policy with regards to simple PIN, complex PIN and encryption. Can you provide more details about your mobile device policy?
An error occurred while saving the commentAnonymous commented
I have a rooted device with cyanogenmod Rom. If you go to settings - >security - >device Administrator you can unchecked OWA from the list and then you only requires to have 4 digits pass to open the app.