Samsung SM-G960F schematic, the Galaxy S9 according to the file name, stored as a 7.28 MB PDF. The name carries no revision number, so confirm the main board version before trusting reference designators. A technician uses it to follow PMIC outputs, the battery and charging circuit, display and camera flex connector pins, and audio and RF paths when chasing no-boot, no-charge or missing-signal faults. It opens in any standard PDF viewer, where searching for part names or nets helps locate the right sheet 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 @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.