WindowsMania.pl seems to have laid their hands on a number of service manuals for Nokiaâ€™s Windows Phone 8 range, and have detailed schematics for the Nokia Lumia 620, 820 and 920.

The information includes part numbers and details of exactly how they all fit together, and confirms information such as that the Nokia Lumia 920 and 820 have gyroscopes, while the NL 620 has not.

If that sounds like your kind of thing, see the collection at WindowsMania.pl here.