Hi. I switched from pure Android phone (Essential PH-1). ZenUI though being quite close to pure stock UI, however has some not so pleasant nuances. I'll name some of them:
1. Bluetooth icon is always shown in status bar, even if no active connection exist. On stock Android the icon appears only when connected. There's no point of showing this icon all the time. It should follow same logic as with Wifi icon.
2. When mobile data is disabled, while wifi os connected, the mobile signal strength icon doesn't change. On stock Android the icon adds a small cross, which indicates disabled mobile data. This is handy, because you can clearly see if your mobile data is on or off regardless of wifi state, because sometimes you don't want the phone to fall back to mobile data when wifi gets disconnected.
3. When using assistant hardware key to cycle thru Mute-Vibrate-Sound, it plays annoying abrupt audio alert on Sound. Can this be disabled?
4. Some UI elements and dialogues are not in compliance with Material Design guidelines.
I think, you must at least work out the first 3 points.
