Schematic for the Xiaomi Poco X2 smartphone, supplied as a single 1011 KB PDF. Phone diagrams like this show the PMIC outputs, battery and charging path, display and camera connectors, and the signal lines between the SoC and peripherals. Technicians use them to check where a short to ground originates, measure voltages on test points, and identify the connector pinouts. Pair it with a boardview where available for physical component locations, and confirm that your unit matches the model before following designators.
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 @mischematic. 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.