This one may look like it's suitable for business people looking for devices with higher security. The successor to the original Blackphone surely has superior specs although it is a little bit more expensive than the Iphone 6s for comparison. Android devices running Android 5.x should have the same level of security and especially for Iphone 6 series today although the price is obviously the downside due to how superior those devices are and especially for the ones made by Samsung which may cost like a price of a standard computer. The Blackphone 2 OS is obviously the same OS as the first Blackphone is although I don't know what exact version the OS is but again, I still know that it is based on Cyanogenmod. And of course, the Blackphone 2 can be suitable for mobile device management. To keep both enterprise and personal stuffs separate and private, there should be something that is akin to VMWare's Android virtualization program where you can open up the Android VM containing the enterprise stuffs although it may look like either a remote desktop kind of a technology or maybe a local VM technology given to the employees but even then, it's a recommendation that the enterprise data should be stored in the organization when possible unless you need to work on it from home after work.
The last thing to say that Google had just made an announcement for Android 6.0 release that will take place in early October as if it may look like a good time if done correctly like what IOS9 is.