It’s not magic, the screen and the body was nokia design, that got reused from the N9 developments, the actual phone board, were the cpu memory etc goes was a Compal design… It was the way Nokia found to make something really fast.
It is all WP foult, Nokia never developed boards around the Qualcom (nokia and Qualcom are historical enemies) platform, so it could not quickly refurbish an existing nokia developed board to WP, so it had to use something made by Compal….

If there is one thing Nokia should get it right and better than Microsoft is phone calls.

So the numbers are absolutely surprising, Apparently Nokia as a better OS for a smartphone battery than WP.

Nokia refurbished a Compal BOARD design, Into the N9 form factor..

COMPAL did the board and assemblage into the N9 chassis provided by nokia giiii this is Common knowledge. If you search in to Compal offerings you will find the Lumia 800 basic board..

The industrial design is Nokia’s. The innards of both are hardware modules designed by Compal based on agreed technical specifications supplied by Nokia and Microsoft. Apple is very similar, the only difference being they provide the actual design to the manufacturer rather than subcontracting it.

That’s the only difference.

And it’s the latter that’s the case. Both the N9 and 800 were designed by Anton Falghren’s design team at Nokia.

You’re confusing using a hardware module – which is what Compal provide, using the components specified to them, in exactly the same way Foxconn manufacture the iPhone’s hardware module – with design.