Mobile devices with Android are very popular but still a pain to really manage them in a descent way and keeping the device and the data on it secure. With the new version Android 6 (Marshmallow) which is currently rolled out, Google is securing the devices by default with device encryption. Which is a good thing if you ask me.
If you still have an Android device of an earlier version, you may also want to encrypt the device. A couple of tips if you are using Intune to manage Androids or if you are thinking of using Intune and starting to secure your devices.