Electrical schematic, named in Portuguese as esquema elétrico, for the Samsung Galaxy J4 Plus, model J415F, packed in an 8.64 MB RAR archive. After extraction the diagrams help trace battery and PMIC rails, charging and USB lines, and display connector signals when diagnosing no-power or no-image faults. Schematic pages are normally searchable by component designator. Make sure the phone really is an SM-J415F variant, because the J4 Plus and the standard J4 use different boards and are easily confused.
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 @esquemaseletricos. 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.