Preface to state that blackberry 10 and Microsoft Windows phones were much better than iOS and Android for almost everything except getting devs to build apps on their platforms.
I like the idea of Android. I want there to be an open ecosystem and different types of devices that can look similar or look different.
It’s a real pain in the ass to manage Android. There was admin mode, now there’s enterprise mode. Also there’s Knox, with various options and licensing that overlap with your mdm. Oh and gmail enterprise is the email app but you need to include chrome, unless you’re using Knox but oh yeah never mind that was deprecated you’ll be using gmail. Also the dual-profile thing isn’t very seamless. Also depending on the phone vendor, model, and OS version the UI will be different. Good luck teaching anyone the changes or talking them through screens.
It’s so bad that Microsoft developed Outlook for Android and app-level management to largely ignore the nonsense that was managing android devices.
Over on iOS, the UI has largely remained the same since release. MDM isn’t great but it’s gotten better. It’s a breeze to manage compared to iOS. Apps are pretty consistent in design.
Windows phones never really got around to MDM, but blackberry phones were always easy to manage.
IOS is simple better for enterprise and most non-technical users that need a smartphone and have no interest in customizing it.