Duarte, the Android UI guy (laugh)
Sorry Mr. Duarte, I'm totally unimpressed with the work you have done in the past years.
Recently changed from Lumia 920 Windows Phone to LG G4 Android phone.
Although the LG hardware is great, the Android OS is absolutely miserable. I'm not talking about the underlying OS, but talking about the UI. It's a confusing UI. When you hear a notification sound, you have to dig to find out what app the notification came from.
Double-layer homescreen (one with all apps, one with selected app).
Windows 10 has been designed 'together' with the user. MS clearly listened and learned from what the user wants. Has implemented features not based on their cool factor, but on their usability factor.