I don't know about the 925 but Nokia Lumia 1020 is easily the best phone available to the public.

shocking that you declare the 1020 the best phone available to the public
First and foremost: there's no branching of users. Whether you're a power user, a 90-year-old granny, a toddler or a Brooklyn hipster, you get the same UX.
Secondly: the most used functions should be always accessible, period. When a user picks up a phone with a specific task in mind, his path to complete that task should be as optimized as possible. That's why iOS has a quick access dock as well as most Android phones.
If you look at the live tiles, there are useless animations, complete disregard of visual cues and the focal points are all over the place. Why is the Red Bull app colored, thus stealing my attention, while the more important phone and message icons are not? Why is the Xbox Live tile green by default, making it the only one to stand out?
Thanks to these things, the UI is crowded and it's difficult to form a visual hierarchy of what I'm seeing.
Fourthly: no folders. Only an alphabetical app list.