Block diagram in PDF form for the Samsung Galaxy A01 Core, model SM-A013F. It gives a top-level overview of how the main subsystems on the phone board connect, such as the processor, memory, power management, charging, display and RF sections. A technician uses a block diagram like this to understand signal and power flow before tracing a fault, deciding which section to probe first. It is not a full component-level schematic, so pair it with a detailed diagram or boardview when locating parts. Any PDF reader opens it.
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_mobile5. 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.