Circuit schematic for the Xiaomi Mi 5, a phone known internally as gemini, supplied in a ZIP archive of 967 KB. Repair shops use these sheets to trace power rails, check what feeds a charging or display circuit, locate filter capacitors and test points and work out which part is shorting a line to ground. The content is normally a PDF that opens in a standard reader. Match the board revision silkscreened on the PCB to the drawing before trusting resistor values or reference designators.
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 @esquematicosparatodos. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.