RAR archive labelled A525F, matching Samsung naming for the Galaxy A52 (SM-A525F), though the name gives no brand or content type. At 12.9 MB it may hold a schematic, boardview or both; open it to confirm. Such documents let a technician trace the PMIC and charging rails, locate test points and connectors, and find components around a short. Check that the model and board revision on the phone match the documents, and use a recent archive tool such as 7-Zip or WinRAR to extract it.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.