Schematic diagram set for the Samsung SM-A310F smartphone, supplied as a 1.31 MB PDF. It is useful for tracing power rails from the PMIC, following charging and USB lines, checking display and camera connector pinouts and finding which components sit on a shorted line. Pages are searchable in most PDF viewers, so net names and part designators can be located quickly. Check that the board revision printed on the PCB corresponds to the variant in the drawings, as Samsung sometimes revises layouts within one model.
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_mobiles. 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.