RAR archive of 1.24 MB identified only by J120H, the code that corresponds to the Samsung Galaxy J1 2016 model SM-J120H. The name does not reveal contents, which may be a schematic, layout or service images for the phone board. Material of this kind helps a technician follow charging and power circuits, find test points and identify parts while repairing no-power or no-charge faults. Extract the archive to see exactly what it contains and confirm the model variant matches the handset.
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 @c_f_s. 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.