RAR archive of repair material for the Huawei Honor 5X smartphone, 6.90 MB. The name does not list the contents, which could be schematics, a component layout or other service documents, so extract it with WinRAR or 7-Zip and look inside. Phone repair files like these help with tracing the charging and PMIC circuits, locating test points, and finding the components behind a short or a no-power fault. Check that any board revision marked in the documents matches the phone's mainboard.
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 @mobileshematic. 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.