Schematic for the Samsung SM-G531H smartphone, a Galaxy Grand Prime variant, in a 4.85 MB PDF. The name mentions no board revision or page range, so verify the model code on the phone label first. Technicians use such diagrams to trace charging and PMIC supply rails, find components near the USB port and battery connector, and follow signal lines for display, touch, audio or SIM faults. Any PDF viewer opens it, and searching for net names or part designators helps reach the right section of the circuit quickly.
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 @mobileshematic. 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.