Block diagram for the Xiaomi Poco M3 smartphone, supplied as a 539 KB PDF. It is an overview rather than a full schematic, showing how the main processor, power management, memory, charging, display, camera and radio sections connect. Phone technicians use such a diagram to understand which subsystem feeds which, narrow down the area involved in a fault, and plan further measurements. For component-level detail and test point locations, it is best used alongside full schematics or a layout for the same 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_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.