Repair archive for the Apple iPhone 5C, compressed as RAR and about 3.4 MB. Nothing beyond the model is stated, so the document type inside must be checked after extraction. Archives like this usually provide logic board schematics or a component layout, allowing a technician to follow charging and backlight circuits, find test points and identify the part responsible for a short. Since the 5C shares heritage with the iPhone 5, confirm the files are specific to the 5C board before using values or locations.
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 @cyberlanelectonik. 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.