Schematic package for the model code A107F, delivered as an 8.59 MB zip whose name states nothing beyond that code. The archive likely contains circuit diagrams and possibly component placement pages for the phone mainboard. Technicians rely on these to follow the power management IC outputs, charging path, display and camera connector signals while diagnosing no-power, no-charge or no-image faults. Extract the files and check that they match the hardware revision on the board in front of you.
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 @phoneSchematics. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.