What OS rel. your Android fleet is running ?

We always try to stay on the latest versions available for the devices but also need to ensure all apps are running which also includes the MDM as very often Google is restricting access even for the MDM app (even device is enrolled as fully managed - I really don't understand that! BYOD or COPE could make sense but not for COBO).

So we have mainly A12 and A13. But as we are currently looking foward to exchange devices it will switch to A13/14 i think, but A14 is yet untested as there can be very model specific issues we want to test on relevant models.