Kapion LAB have uploaded 2 videos showing respectively how to assemble and disassemble the Lumia 950 XL.
The 16 and 14 minute videos give a very interesting look at the large number of components that make up our flagship phone, and shows for example exactly how massive the 20 megapixel camera sensor is (above). It also reveals that the NFC antenna is built into the back cover of the phone, meaning replacement backs need to be somewhat more advanced than simple slabs of plastic.
See the videos below:
Note that while the video is very instructive we are not suggesting readers breach their warranty by messing with their handsets- looking at how fiddly the components are we suggest that should be left up to the professionals.