Schematic archive for the model code A145F, a small 606 KB zip whose name carries only that identifier. Diagrams like these let a repairer trace the battery connector, charging IC, PMIC outputs and display lines when a phone shows no power, no charging or a blank screen. The modest size suggests a limited set of pages, so check after extracting whether full schematics or only selected sections are included, and confirm the board version matches your unit.
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.
Built-in OS tools7-Zip