A 1.46 MB schematic PDF named only J7 Pro, with no model code, brand or board revision in the name; J7 Pro is a Samsung Galaxy model name. Such diagrams are used to follow power rails, find components on a shorted line, and check connector pinouts while measuring with a multimeter. Any PDF reader opens it. Because several regional model codes exist under this name, compare the board markings and layout with your phone before relying on part values or test points.
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 @uzb4422. 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)