PDF of 2.50 MB titled in Spanish as assorted jumpers, a collection of jumper and bypass solutions rather than a single device schematic. No brand or model is named. Jumper sheets show where to bridge a broken trace or damaged pad, for example on charging, display, microphone or button lines, and are common references in phone repair. Use them with care: verify on the board schematic that the points really carry the same signal, and solder fine wire neatly to avoid creating new shorts.
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 .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.