Archive for the Apple iPhone X, 6.44 MB in RAR format, with no board number or document type stated. Files of this sort normally include schematic PDFs or boardview layouts of the stacked logic board. Technicians use them to follow rails, find test points and isolate shorts on either layer of the sandwich board. Check whether the documents correspond to your model variant, since Apple boards differ between regional versions and modem suppliers.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematicslaptop. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)