Honestly Windows Phone 7,7.5 and 8 were fantastic OS. Windows 10 Mobile however… felt bland. Now I’m saying this as someone who owned a lot of Lumia devices (710,830,920,930,1520 and 2520) I feel like Microsoft listened too much to feedback when people said that it was “Alien and Strange” as an OS. I loved it’s Live Tile system, it’s People Hub, it’s monochrome black background with “poping” bright colors as tiles (honestly like the Orange on black background). It was minimal but also had a lot of snippets of information and photos that appear on the home screen.
I owned a Xiaomi Mi Mix for almost a year now. While it’s a nice phone, it just doesn’t feel as great as a Windows Phone.