Samsung SM-G531H smartphone schematic, supplied as a 4.85 MB PDF. Only the model code appears in the name, so the board revision is not indicated. A technician uses such diagrams to follow battery and charging paths, PMIC outputs, display and camera connections, and to find where a shorted capacitor or failed line sits on the circuit. Any PDF reader will open it. Before relying on part designators, confirm the PCB revision on the handset matches, because layouts can change between production versions.
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 @Schematic_ir20. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.